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Gaylor MR, Hager DN, Tyson K. Where the Postanesthesia Care Unit and Intensive Care Unit Meet. Crit Care Clin 2024; 40:523-532. [PMID: 38796225 DOI: 10.1016/j.ccc.2024.03.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2024]
Abstract
The intensive care unit (ICU) was born from the postanesthesia care unit (PACU). In today's hospital systems, there remains a lot of overlap in the care missions of each location. The patient populations share many similarities and many of the same care, technology, and care protocols apply to patients in both units. As shown by the COVID-19 pandemic, there is immense value in maintaining protocols, processes, and staffing models for the safe care of ICU patients in the PACU when ICU demands exceed capacity.
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Affiliation(s)
- Mary Rose Gaylor
- Division of Critical Care Medicine, Department of Anesthesia and Critical Care Medicine, Johns Hopkins University, 1800 Orleans Street, Baltimore, Maryland 21287, USA
| | - David N Hager
- Division of Pulmonary and Critical Care Medicine, Department of Medicine, Johns Hopkins University, 1800 Orleans Street, Zayed Tower, Suite 9121, Baltimore, MD 21287, USA
| | - Kathleen Tyson
- Division of Critical Care Medicine Department of Anesthesia and Critical Care Medicine, 600 North Wolfe Street, Meyer Building, Suite 295, Baltimore, MD 21287, USA.
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2
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Peyton PJ, Leslie K. The safety of nitrous oxide: glass half-full or half-empty? Br J Anaesth 2024:S0007-0912(24)00265-4. [PMID: 38816332 DOI: 10.1016/j.bja.2024.04.047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 06/01/2024] Open
Abstract
A systematic review of clinical trials confirms that including nitrous oxide in the gas mixture for general anaesthesia has minor short-term benefits and does not impact most patient safety outcomes. However, no risk-benefit analysis of nitrous oxide should ignore its known environmental effects. If continued nitrous oxide use is supported, strategies to minimise and monitor the contribution of medical nitrous oxide to global warming are vital.
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Affiliation(s)
- Philip J Peyton
- Department of Critical Care, Melbourne Medical School, University of Melbourne, Melbourne, VIC, Australia; Department of Anaesthesia, Austin Health, Melbourne, VIC, Australia.
| | - Kate Leslie
- Department of Critical Care, Melbourne Medical School, University of Melbourne, Melbourne, VIC, Australia; Department of Anaesthesia and Pain Management, Royal Melbourne Hospital, Melbourne, VIC, Australia; Central Clinical School, Faculty of Medicine, Nursing and Health Sciences, Monash University, Melbourne, VIC, Australia
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3
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Friess JO, Stiffler S, Mikasi J, Erdoes G, Nagler M, Gräni C, Weiss S, Fischer K, Guensch DP. Perioperative hyperoxia- impact on myocardial biomarkers, strain and outcome in high-risk patients undergoing non-cardiac surgery: Protocol for a prospective randomized controlled trial. Contemp Clin Trials 2024; 140:107512. [PMID: 38537904 DOI: 10.1016/j.cct.2024.107512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2023] [Revised: 02/21/2024] [Accepted: 03/24/2024] [Indexed: 04/05/2024]
Abstract
BACKGROUND Supplemental oxygen is used during every general anesthesia. However, for the maintenance phase of a general anesthesia, in most cases the longest part of anesthesia, only scarce evidence of dosing supplemental oxygen exists. Oxygen is a well-known coronary vasoconstrictor and thus may contribute to cardiovascular complications especially in vulnerable high-risk patients with coronary artery disease undergoing major non-cardiac surgery. Myocardial biomarkers are early indicators of myocardial injury. Oxygen supply demand mismatches due to coronary artery disease aggravated by hyperoxia might be displayed by changes from the biomarker's baseline-values. This study is designed to detect changes in myocardial biomarkers levels associated with perioperative hyperoxia. METHODS This prospective randomized controlled interventional trial investigates the impact of maintaining perioperative high oxygen supplementation in high-risk patients undergoing non-cardiac vascular surgery on cardiac biomarkers, myocardial strain and outcome in 110 patients. Patients are allocated to be supplemented with either 0.3 (normal) or 0.8 (high) fraction of inspired oxygen (FiO2) perioperatively. Included is a short crossover phase during which transesophageal echocardiography is used to evaluate myocardial function at FiO2 0.3 and 0.8 by strain analysis in each patient. Patients will be followed up for complications at 30 days and 1 year. CONCLUSION The trial is designed to evaluate perioperative changes from baseline myocardial biomarkers associated with perioperative FiO2. Furthermore, exploration and correlation of changes in biomarkers, acute early changes in myocardial function and clinical outcomes induced by different FiO2 may be possible.
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Affiliation(s)
- Jan O Friess
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
| | - Sandra Stiffler
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Jan Mikasi
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Gabor Erdoes
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Michael Nagler
- Institute of Clinical Chemistry, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Christoph Gräni
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Salome Weiss
- Department of Vascular Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Kady Fischer
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Dominik P Guensch
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
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4
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Dai N, Gu J, Luo Y, Tao Y, Chou Y, He Y, Qin H, Chen T, Fu X, Chen M, Xing Z. Impact of hyperoxia on the gut during critical illnesses. Crit Care 2024; 28:66. [PMID: 38429791 PMCID: PMC10905909 DOI: 10.1186/s13054-024-04848-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 02/22/2024] [Indexed: 03/03/2024] Open
Abstract
Molecular oxygen is typically delivered to patients via oxygen inhalation or extracorporeal membrane oxygenation (ECMO), potentially resulting in systemic hyperoxia from liberal oxygen inhalation or localized hyperoxia in the lower body from peripheral venoarterial (VA) ECMO. Consequently, this exposes the gastrointestinal tract to excessive oxygen levels. Hyperoxia can trigger organ damage due to the overproduction of reactive oxygen species and is associated with increased mortality. The gut and gut microbiome play pivotal roles in critical illnesses and even small variations in oxygen levels can have a dramatic influence on the physiology and ecology of gut microbes. Here, we reviewed the emerging preclinical evidence which highlights how excessive inhaled oxygen can provoke diffuse villous damage, barrier dysfunction in the gut, and gut dysbiosis. The hallmark of this dysbiosis includes the expansion of oxygen-tolerant pathogens (e.g., Enterobacteriaceae) and the depletion of beneficial oxygen-intolerant microbes (e.g., Muribaculaceae). Furthermore, we discussed potential impact of oxygen on the gut in various underlying critical illnesses involving inspiratory oxygen and peripheral VA-ECMO. Currently, the available findings in this area are somewhat controversial, and a consensus has not yet to be reached. It appears that targeting near-physiological oxygenation levels may offer a means to avoid hyperoxia-induced gut injury and hypoxia-induced mesenteric ischemia. However, the optimal oxygenation target may vary depending on special clinical conditions, including acute hypoxia in adults and neonates, as well as particular patients undergoing gastrointestinal surgery or VA-ECMO support. Last, we outlined the current challenges and the need for future studies in this area. Insights into this vital ongoing research can assist clinicians in optimizing oxygenation for critically ill patients.
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Affiliation(s)
- Ninan Dai
- Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Juan Gu
- Department of Pharmacy, Affiliated Hospital of Zunyi Medical University, Zunyi, China
- Department of Clinical Sciences, Malmö, Section for Surgery, Lund University, 214 28, Malmö, Sweden
| | - Yanhong Luo
- First Clinical College, Zunyi Medical University, Zunyi, China
| | - Yuanfa Tao
- Department of Pancreatic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yuehting Chou
- Department of Cardiopulmonary Bypass, Wuhan Asian Heart Hospital, Wuhan, China
| | - Ying He
- Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Han Qin
- Department of Respiratory and Critical Care Medicine, Kweichow Moutai Hospital, Guizhou Province, Zunyi, China
| | - Tao Chen
- Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China
| | - Xiaoyun Fu
- Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China.
| | - Miao Chen
- Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China.
| | - Zhouxiong Xing
- Department of Critical Care Medicine, Affiliated Hospital of Zunyi Medical University, Zunyi, China.
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5
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Kochupurackal JC, Bhattacharjee S, Baidya DK, Panwar R, Prakash K, Rewari V, Maitra S. Postoperative pulmonary complications with high versus standard FiO 2 in adult patients undergoing major abdominal surgery: A noninferiority trial. Surgery 2024; 175:536-542. [PMID: 38016902 DOI: 10.1016/j.surg.2023.10.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 10/16/2023] [Accepted: 10/25/2023] [Indexed: 11/30/2023]
Abstract
BACKGROUND Despite the possible clinical benefit of high intraoperative oxygen therapy on surgical site infection, the effect on postoperative respiratory function is debatable. However, it remains yet to be elucidated whether hyperoxia due to a high fraction of inspired oxygen used in conjunction with lung protective ventilation can lead to increased incidence of postoperative pulmonary complications. METHODS In this noninferiority randomized trial, an intraoperative high fraction of inspired oxygen of 0.8 (group H) was compared to a standard fraction of inspired oxygen of 0.3 to 0.4 (group S) in adult patients undergoing major elective or emergency surgery. A lung protective ventilation strategy was employed in all patients, including volume control ventilation with a tidal volume of 6 to 8 mL/kg of predicted body weight, respiratory rate of 12 beats per minute, and positive end-expiratory pressure of 5 to 8 cm H2O. Postoperative pulmonary complications were assessed on postoperative days 3 and 5 by the Melbourne group scale. RESULTS In this trial, n = 226 patients were randomized; among them, 130 patients underwent routine surgery, and 96 patients underwent emergency surgery. The median (interquartile range) of the patients was 48 (35-58) years, and 47.3% were female. Melbourne group scale scores at postoperative day 3 (median [interquartile range] 2 [1-4] in group S vs 2 [1-3] in group H; the difference in median [95% confidence interval] 0 [0, -1]; P = .13) and day 5 (median [interquartile range] 1 (0-3) in group S vs 1 [0-3] in group H; the difference in median [95% confidence interval] 0 [0, 0.5]; P = .34) were statistically similar in both the groups and the upper margin was within the predefined margin of 1. Incidence of surgical site infection (P = .46), postoperative hospital stay (P = .29), and days alive without antibiotic therapy at postoperative day 28 (P = .95) were similar in both groups. CONCLUSION High intraoperative fiO2 was noninferior to standard fiO2 in postoperative pulmonary complications in adult patients undergoing major surgery.
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Affiliation(s)
- Jose Cyriac Kochupurackal
- Department of Anaesthesiology, Pain Medicine, and Critical Care, All India Institute of Medical Sciences, New Delhi, India
| | - Sulagna Bhattacharjee
- Department of Anaesthesiology, Pain Medicine, and Critical Care, All India Institute of Medical Sciences, New Delhi, India
| | - Dalim K Baidya
- Department of Anaesthesiology, Pain Medicine, and Critical Care, All India Institute of Medical Sciences, New Delhi, India
| | - Rajesh Panwar
- Department of GI Surgery and Liver Transplantation, All India Institute of Medical Sciences, New Delhi, India
| | - Kelika Prakash
- Department of Anaesthesiology, Pain Medicine, and Critical Care, All India Institute of Medical Sciences, New Delhi, India
| | - Vimi Rewari
- Department of Anaesthesiology, Pain Medicine, and Critical Care, All India Institute of Medical Sciences, New Delhi, India
| | - Souvik Maitra
- Department of Anaesthesiology, Pain Medicine, and Critical Care, All India Institute of Medical Sciences, New Delhi, India.
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6
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Ridgeon E, Shadwell R, Wilkinson A, Odor PM. Mismatch of populations between randomised controlled trials of perioperative interventions in major abdominal surgery and current clinical practice. Perioper Med (Lond) 2023; 12:60. [PMID: 37974283 PMCID: PMC10655289 DOI: 10.1186/s13741-023-00344-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 10/14/2023] [Indexed: 11/19/2023] Open
Abstract
BACKGROUND Demographics of patients undergoing major abdominal surgery are changing. External validity of relevant RCTs may be limited by participants not resembling patients encountered in clinical practice. We aimed to characterise differences in age, weight, BMI, and ASA grade between participants in perioperative trials in major abdominal surgery and patients in a reference real-world clinical practice sample. The secondary aim was to investigate whether time since trial publication was associated with increasing mismatch between these groups. METHODS MEDLINE and Embase were searched for multicentre RCTs from inception to September 2022. Studies of perioperative interventions in adults were included. Studies that limited enrolment based on age, weight, BMI, or ASA status were excluded. We compared trial cohort age, weight, BMI, and ASA distribution to those of patients undergoing major abdominal surgery at our tertiary referral hospital during September 2021 to September 2022. We used a local, single-institution reference sample to reflect the reality of clinical practice (i.e. patients treated by a clinician in their own hospital, rather than averaged nationally). Mismatch was defined using comparison of summary characteristics and ad hoc criteria based on differences relevant to predicted mortality risk after surgery. RESULTS One-hundred and six trials (44,499 participants) were compared to a reference cohort of 2792 clinical practice patients. Trials were published a median (IQR [range]) 13.4 (5-20 [0-35]) years ago. A total of 94.3% of trials were mismatched on at least one characteristic (age, weight, BMI, ASA). Recruitment of ASA 3 + participants in trials increased over time, and recruitment of ASA 1 participants decreased over time (Spearman's Rho 0.58 and - 0.44, respectively). CONCLUSIONS Patients encountered in our current local clinical practice are significantly different from those in our defined set of perioperative RCTs. Older trials recruit more low-risk than high-risk participants-trials may thus 'expire' over time. These trials may not be generalisable to current patients undergoing major abdominal surgery, and meta-analyses or guidelines incorporating these trials may therefore be similarly non-applicable. Comparison to local, rather than national cohorts, is important for meaningful on-the-ground evidence-based decision-making.
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Affiliation(s)
- Elliott Ridgeon
- Department of Anaesthetics and Perioperative Medicine, Wexham Park Hospital, Slough, UK.
- Department of Anaesthetics and Perioperative Medicine, University College London Hospitals, London, UK.
- Perioperative Medicine MSc, University College London, London, UK.
| | - Rory Shadwell
- Department of Critical Care, University College London Hospitals, London, UK
| | - Alice Wilkinson
- Department of Anaesthetics, University College London Hospitals, London, UK
| | - Peter M Odor
- Department of Anaesthetics and Perioperative Medicine, University College London Hospitals, London, UK
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7
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Piccioni F, Spagnesi L, Pelosi P, Bignami E, Guarnieri M, Fumagalli L, Polati E, Schweiger V, Comi D, D'Andrea R, DI Marco P, Spadaro S, Antonelli S, Sollazzi L, Mirabella L, Schiavoni M, Laici C, Marelli JA, Fabiani F, Ball L, Roasio A, Servillo G, Franchi M, Murino P, Irone M, Parrini V, DE Cosmo G, Cornara G, Ruberto F, Pasta G, Ferrari L, Greco M, Cecconi M, Della Rocca G. Postoperative pulmonary complications and mortality after major abdominal surgery. An observational multicenter prospective study. Minerva Anestesiol 2023; 89:964-976. [PMID: 37671537 DOI: 10.23736/s0375-9393.23.17382-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
BACKGROUND Postoperative pulmonary complications (PPCs) significantly contribute to postoperative morbidity and mortality. We conducted a study to determine the incidence of PPCs after major elective abdominal surgery and their association with early and 1-year mortality in patient without pre-existing respiratory disease. METHODS We conducted a multicenter observational prospective clinical study in 40 Italian centers. 1542 patients undergoing elective major abdominal surgery were recruited in a time period of 14 days and clinically managed according to local protocol. The primary outcome was to determine the incidence of PPCs. Further, we aimed to identify independent predictors for PPCs and examine the association between PPCs and mortality. RESULTS PPCs occurred in 12.6% (95% CI 11.1-14.4%) of patients with significant differences among general (18.3%, 95% CI 15.7-21.0%), gynecological (3.7%, 95% CI 2.1-6.0%) and urological surgery (9.0%, 95% CI 6.0-12.8%). PPCs development was associated with known pre- and intraoperative risk factors. Patients who developed PPCs had longer length of hospital stay, higher risk of 30-days hospital readmission, and increased in-hospital and one-year mortality (OR 3.078, 95% CI 1.825-5.191; P<0.001). CONCLUSIONS The incidence of PPCs in patients without pre-existing respiratory disease undergoing elective abdominal surgery is high and associated with worse clinical outcome at one year after surgery. General surgery is associated with higher incidence of PPCs and mortality compared to gynecological and urological surgery.
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Affiliation(s)
- Federico Piccioni
- Anesthesia Unit1, Department of Anesthesia and Intensive Care, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy -
| | - Lorenzo Spagnesi
- Section of Anesthesia and Intensive Care Medicine Clinic, Azienda Sanitaria Universitaria Friuli Centrale, Udine, Italy
| | - Paolo Pelosi
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy
- Anesthesia and Critical Care, IRCCS San Martino University Hospital, Genoa, Italy
| | - Elena Bignami
- Anesthesiology, Critical Care and Pain Medicine Division, Department of Medicine and Surgery, University of Parma, Parma, Italy
| | - Marcello Guarnieri
- Department of Anesthesia and Intensive Care, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - Luca Fumagalli
- Department of Critical and Supportive Therapy, Fondazione IRCCS Istituto Nazionale Tumori, Milan, Italy
| | - Enrico Polati
- Department of Surgery, Dentistry, Pediatrics and Gynecology, Section of Anesthesia, Intensive Care and Pain Therapy, University of Verona, Verona, Italy
| | - Vittorio Schweiger
- Department of Surgery, Dentistry, Pediatrics and Gynecology, Section of Anesthesia, Intensive Care and Pain Therapy, University of Verona, Verona, Italy
| | - Daniela Comi
- Anesthesia and Intensive Care Unit, ASST Papa Giovanni XXIII, Bergamo, Italy
| | - Rocco D'Andrea
- Department of Anesthesia, Intensive Care and Emergency, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Pierangelo DI Marco
- Department of Clinical, Anesthesiological, and Cardiovascular Sciences, Sapienza University, Rome, Italy
| | - Savino Spadaro
- Anesthesia and Intensive Care Unit, Department of Translational Medicine, Ferrara University Hospital, University of Ferrara, Ferrara, Italy
| | - Serena Antonelli
- Unit of Anesthesia, Intensive Care and Pain Management, Department of Medicine, Campus Bio-Medico Foundation of Rome, Rome, Italy
| | - Liliana Sollazzi
- Department of Emergency Medicine, Anesthesiology, and Resuscitation, IRCCS A. Gemelli University Polyclinic Foundation, Rome, Italy
- IRCCS Roma, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Lucia Mirabella
- Intensive Care Unit, Department of Medical and Surgical Science, University of Foggia, Foggia, Italy
| | - Marina Schiavoni
- Anesthesia and Intensive Care Unit1, Giovanni XXIII Polyclinic Hospital, Bari, Italy
| | - Cristiana Laici
- Postoperative and Abdominal Organ Transplant Intensive Care Unit, IRCCS Azienda Ospedaliero-Universitaria di Bologna, Bologna, Italy
| | - Jlenia A Marelli
- Unit of Anesthesia and Resuscitation2, Department of Emergency Medicine, Anesthesia, and Resuscitation, Azienda Socio Sanitaria Territoriale Lariana, Como, Italy
| | - Fabio Fabiani
- Anesthesia and Intensive Care Medicine, Centro di Riferimento Oncologico di Aviano IRCCS, Aviano, Pordenone, Italy
| | - Lorenzo Ball
- Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy
- Anesthesia and Critical Care, IRCCS San Martino University Hospital, Genoa, Italy
| | - Agostino Roasio
- Anesthesia and Intensive Care Unit, Cardinal Massaia Hospital, Asti, Italy
| | - Giuseppe Servillo
- Department of Neurosciences, Reproductive and Odontostomatological Sciences, University of Naples Federico II, Naples, Italy
| | - Matteo Franchi
- Anesthesia and Intensive Care Unit, Azienda Usl Toscana Nordovest, Versilia Hospital, Camaiore, Lucca, Italy
| | - Patrizia Murino
- Anesthesia Unit, Critical Area Department, Azienda Ospedaliera Specialistica dei Colli, Monaldi Hospital, Naples, Italy
| | - Marco Irone
- Unit of Anesthesia and Resuscitation, San Bortolo Hospital, Vicenza, Italy
| | - Vieri Parrini
- Anesthesia and Intensive Care Unit, del Mugello Hospital, USL Toscana Centro, Florence, Italy
| | - Germano DE Cosmo
- Anesthesia and Intensive Care Institute, Sacred Heart Catholic University, Rome, Italy
| | - Giuseppe Cornara
- Anesthesia and Intensive Care Unit, ASO S. Croce e Carle, Cuneo, Italy
| | - Franco Ruberto
- "Paride Stefanini" Department of General and Specialist Surgery, Umberto I Polyclinic Hospital, Sapienza University, Rome, Italy
| | - Gilda Pasta
- Division of Anesthesia, Pain Medicine and Supportive Care, Istituto Nazionale dei Tumori IRCCS Fondazione Pascale, Naples, Italy
| | - Lorenzo Ferrari
- Anesthesia and Intensive Care Unit, Azienda USL - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Massimiliano Greco
- Anesthesia Unit1, Department of Anesthesia and Intensive Care, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
| | - Maurizio Cecconi
- Anesthesia Unit1, Department of Anesthesia and Intensive Care, IRCCS Humanitas Research Hospital, Rozzano, Milan, Italy
- Department of Biomedical Sciences, Humanitas University, Milan, Italy
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8
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de Jonge SW, Hulskes RH, Zokaei Nikoo M, Weenink RP, Meyhoff CS, Leslie K, Myles P, Forbes A, Greif R, Akca O, Kurz A, Sessler DI, Martin J, Dijkgraaf MG, Pryor K, Belda FJ, Ferrando C, Gurman GM, Scifres CM, McKenna DS, Chan MT, Thibon P, Mellin-Olsen J, Allegranzi B, Boermeester M, Hollmann MW. Benefits and harms of perioperative high fraction inspired oxygen for surgical site infection prevention: a protocol for a systematic review and meta-analysis of individual patient data of randomised controlled trials. BMJ Open 2023; 13:e067243. [PMID: 37899157 PMCID: PMC10619062 DOI: 10.1136/bmjopen-2022-067243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Accepted: 07/27/2023] [Indexed: 10/31/2023] Open
Abstract
INTRODUCTION The use of high fraction of inspired oxygen (FiO2) intraoperatively for the prevention of surgical site infection (SSI) remains controversial. Promising results of early randomised controlled trials (RCT) have been replicated with varying success and subsequent meta-analysis are equivocal. Recent advancements in perioperative care, including the increased use of laparoscopic surgery and pneumoperitoneum and shifts in fluid and temperature management, can affect peripheral oxygen delivery and may explain the inconsistency in reproducibility. However, the published data provides insufficient detail on the participant level to test these hypotheses. The purpose of this individual participant data meta-analysis is to assess the described benefits and harms of intraoperative high FiO2compared with regular (0.21-0.40) FiO2 and its potential effect modifiers. METHODS AND ANALYSIS Two reviewers will search medical databases and online trial registries, including MEDLINE, Embase, CENTRAL, CINAHL, ClinicalTrials.gov and WHO regional databases, for randomised and quasi-RCT comparing the effect of intraoperative high FiO2 (0.60-1.00) to regular FiO2 (0.21-0.40) on SSI within 90 days after surgery in adult patients. Secondary outcome will be all-cause mortality within the longest available follow-up. Investigators of the identified trials will be invited to collaborate. Data will be analysed with the one-step approach using the generalised linear mixed model framework and the statistical model appropriate for the type of outcome being analysed (logistic and cox regression, respectively), with a random treatment effect term to account for the clustering of patients within studies. The bias will be assessed using the Cochrane risk-of-bias tool for randomised trials V.2 and the certainty of evidence using Grading of Recommendations, Assessment, Development and Evaluation methodology. Prespecified subgroup analyses include use of mechanical ventilation, nitrous oxide, preoperative antibiotic prophylaxis, temperature (<35°C), fluid supplementation (<15 mL/kg/hour) and procedure duration (>2.5 hour). ETHICS AND DISSEMINATION Ethics approval is not required. Investigators will deidentify individual participant data before it is shared. The results will be submitted to a peer-review journal. PROSPERO REGISTRATION NUMBER CRD42018090261.
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Affiliation(s)
- Stijn W de Jonge
- Department of Surgery, Amsterdam UMC location University of Amsterdam, Amsterdam, The Netherlands
- Department of Anaesthesiology, Amsterdam UMC location University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, The Netherlands
| | - Rick H Hulskes
- Department of Surgery, Amsterdam UMC location University of Amsterdam, Amsterdam, The Netherlands
- Department of Anaesthesiology, Amsterdam UMC location University of Amsterdam, Amsterdam, The Netherlands
| | | | - Robert P Weenink
- Department of Anaesthesiology, Amsterdam UMC location University of Amsterdam, Amsterdam, The Netherlands
| | - Christian S Meyhoff
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - Kate Leslie
- Department of Critical Care, Melbourne Medical School, University of Melbourne, Melbourne, Victoria, Australia
| | - Paul Myles
- Department of Anaesthesiology and Perioperative Medicine, Alfred Hospital, Monash University, Melbourne, Victoria, Australia
| | - Andrew Forbes
- Department of Epidemiology and Preventive Medicine, Monash University, Melbourne, Victoria, Australia
| | - Robert Greif
- Department of Anaesthesiology and Pain Medicine, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Ozan Akca
- Department of Anaesthesiology and Critical Care Medicine, Johns Hopkins University, Baltimore, Maryland, USA
| | - Andrea Kurz
- Department of Outcomes Research, Cleveland Clinic, Cleveland, Ohio, USA
- Department of General Anaesthesiology, Cleveland Clinic, Cleveland, Ohio, USA
| | - Daniel I Sessler
- Department of Outcomes Research, Cleveland Clinic, Cleveland, Ohio, USA
- Department of General Anaesthesiology, Cleveland Clinic, Cleveland, Ohio, USA
| | - Janet Martin
- Department of Anaesthesiology and Perioperative Medicine, and Department of Epidemiology and Biostatistics, University of Western Ontario, London, Ontario, Canada
| | - Marcel Gw Dijkgraaf
- Epidemiology and Data Science, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Public Health, Methodology, Amsterdam UMC location University of Amsterdam, Amsterdam, The Netherlands
| | - Kane Pryor
- Department of Anaesthesiology, Weil Medical College of Cornell University, New York City, New York, USA
| | - F Javier Belda
- Department of Surgery, Hospital Clinico Universitario de Valencia, Valencia, Valenciana, Spain
- Department of Anaesthesia and Critical Care, Hospital Clinico Universitario de Valencia, Valencia, Spain
| | - Carlos Ferrando
- Department of Anaesthesiology and Critical Care, Hospital Clínic de Barcelona, Barcelona, Spain
- CIBER de Enfermedades Respiratorias, Instituto de Salud Carlos III, Madrid, Spain
| | - Gabriel M Gurman
- Department of Anaesthesiology and Critical Care Medicine, Ben-Gurion University of the Negev, Be'er Sheva, Israel
| | - Christina M Scifres
- Department of Obstetrics and Gynaecology, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - David S McKenna
- Department of Obstetrics and Gynaecology, Wright State University and Miami Valley Hospital, Dayton, Ohio, USA
| | - Matthew Tv Chan
- Department of Anaesthesia and Intensive Care, The Chinese University of Hong Kong, Hong Kong, China
| | - Pascal Thibon
- Centre d'appui pour la Prévention des Infections Associées aux Soins, CPias Normandie, Centre Hospitalo-Universitaire, Caen, Normandy, France
| | | | | | - Marja Boermeester
- Department of Surgery, Amsterdam UMC location University of Amsterdam, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism, Amsterdam, The Netherlands
| | - Markus W Hollmann
- Department of Anaesthesiology, Amsterdam UMC location University of Amsterdam, Amsterdam, The Netherlands
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9
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Frei DR, Beasley R, Campbell D, Forbes A, Leslie K, Mackle D, Martin C, Merry A, Moore MR, Myles PS, Ruawai-Hamilton L, Short TG, Young PJ. A vanguard randomised feasibility trial comparing three regimens of peri-operative oxygen therapy on recovery after major surgery. Anaesthesia 2023; 78:1272-1284. [PMID: 37531294 DOI: 10.1111/anae.16103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/02/2023] [Indexed: 08/04/2023]
Abstract
International recommendations encourage liberal administration of oxygen to patients having surgery under general anaesthesia, ostensibly to reduce surgical site infection. However, the optimal oxygen regimen to minimise postoperative complications and enhance recovery from surgery remains uncertain. The hospital operating theatre randomised oxygen (HOT-ROX) trial is a multicentre, patient- and assessor-blinded, parallel-group, randomised clinical trial designed to assess the effect of a restricted, standard care, or liberal peri-operative oxygen therapy regimen on days alive and at home after surgery in adults undergoing prolonged non-cardiac surgery under general anaesthesia. Here, we report the findings of the internal vanguard feasibility phase of the trial undertaken in four large metropolitan hospitals in Australia and New Zealand that included the first 210 patients of a planned overall 2640 trial sample, with eight pre-specified endpoints evaluating protocol implementation and safety. We screened a total of 956 participants between 1 September 2019 and 26 January 2021, with data from 210 participants included in the analysis. Median (IQR [range]) time-weighted average intra-operative Fi O2 was 0.30 (0.26-0.35 [0.20-0.59]) and 0.47 (0.44-0.51 [0.37-0.68]) for restricted and standard care, respectively (mean difference (95%CI) 0.17 (0.14-0.20), p < 0.001). Median time-weighted average intra-operative Fi O2 was 0.83 (0.80-0.85 [0.70-0.91]) for liberal oxygen therapy (mean difference (95%CI) compared with standard care 0.36 (0.33-0.39), p < 0.001). All feasibility endpoints were met. There were no significant patient adverse events. These data support the feasibility of proceeding with the HOT-ROX trial without major protocol modifications.
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Affiliation(s)
- D R Frei
- Department of Anaesthesia and Pain Management, Wellington Hospital, Wellington, New Zealand
- Medical Research Institute of New Zealand, Wellington, New Zealand
| | - R Beasley
- Medical Research Institute of New Zealand, Wellington, New Zealand
| | - D Campbell
- Department of Anaesthesiology, University of Auckland, Auckland, New Zealand
- Department of Anaesthesia and Peri-operative Medicine, Auckland City Hospital, Auckland, New Zealand
| | - A Forbes
- Biostatistics Unit, Division of Research Methodology, School of Public Health and Preventive Medicine, Faculty of Medicine, Nursing, and Health Sciences, Monash University, Melbourne, VIC, Australia
| | - K Leslie
- Department of Anaesthesia and Pain Management, Royal Melbourne Hospital, Melbourne, VIC, Australia
- Department of Critical Care, Melbourne Medical School, University of Melbourne, Melbourne, VIC, Australia
| | - D Mackle
- Medical Research Institute of New Zealand, Wellington, New Zealand
| | - C Martin
- Biostatistics Unit, Division of Research Methodology, School of Public Health and Preventive Medicine, Faculty of Medicine, Nursing, and Health Sciences, Monash University, Melbourne, VIC, Australia
| | - A Merry
- Department of Anaesthesiology, University of Auckland, Auckland, New Zealand
| | - M R Moore
- Department of Anaesthesiology, University of Auckland, Auckland, New Zealand
| | - P S Myles
- Department of Anaesthesiology and Peri-operative Medicine, Alfred Hospital, Melbourne, VIC, Australia
- Department of Anaesthesiology and Peri-operative Medicine, Central Clinical School, Faculty of Medicine, Nursing, and Health Sciences, Monash University, Melbourne, VIC, Australia
| | - L Ruawai-Hamilton
- Department of Anaesthesia and Pain Management, Wellington Hospital, Wellington, New Zealand
| | - T G Short
- Department of Anaesthesia and Peri-operative Medicine, Auckland City Hospital, Auckland, New Zealand
- Department of Anaesthesiology, University of Auckland, Auckland, New Zealand
| | - P J Young
- Department of Anaesthesiology, University of Auckland, Auckland, New Zealand
- Department of Intensive Care, Wellington Regional Hospital, Wellington, New Zealand
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10
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Kuh JH, Jung WS, Lim L, Yoo HK, Ju JW, Lee HJ, Kim WH. The effect of high perioperative inspiratory oxygen fraction for abdominal surgery on surgical site infection: a systematic review and meta-analysis. Sci Rep 2023; 13:15599. [PMID: 37730856 PMCID: PMC10511429 DOI: 10.1038/s41598-023-41300-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Accepted: 08/24/2023] [Indexed: 09/22/2023] Open
Abstract
Guidelines from the World Health Organization strongly recommend the use of a high fraction of inspired oxygen (FiO2) in adult patients undergoing general anesthesia to reduce surgical site infection (SSI). However, previous meta-analyses reported inconsistent results. We aimed to address this controversy by focusing specifically on abdominal surgery with relatively high risk of SSI. Medline, EMBASE, and Cochrane CENTRAL databases were searched. Randomized trials of abdominal surgery comparing high to low perioperative FiO2 were included, given that the incidence of SSI was reported as an outcome. Meta-analyses of risk ratios (RR) were performed using a fixed effects model. Subgroup analysis and meta-regression were employed to explore sources of heterogeneity. We included 27 trials involving 15977 patients. The use of high FiO2 significantly reduced the incidence of SSI (n = 27, risk ratio (RR): 0.87; 95% confidence interval (CI): 0.79, 0.95; I2 = 49%, Z = 3.05). Trial sequential analysis (TSA) revealed that z-curve crossed the trial sequential boundary and data are sufficient. This finding held true for the subgroup of emergency operations (n = 2, RR: 0.54; 95% CI: 0.35, 0.84; I2 = 0%, Z = 2.75), procedures using air as carrier gas (n = 9, RR: 0.79; 95% CI: 0.69, 0.91; I2 = 60%, Z = 3.26), and when a high level of FiO2 was maintained for a postoperative 6 h or more (n = 9, RR: 0.68; 95% CI: 0.56, 0.83; I2 = 46%, Z = 3.83). Meta-regression revealed no significant interaction between SSI with any covariates including age, sex, body-mass index, diabetes mellitus, duration of surgery, and smoking. Quality of evidence was assessed to be moderate to very low. Our pooled analysis revealed that the application of high FiO2 reduced the incidence of SSI after abdominal operations. Although TSA demonstrated sufficient data and cumulative analysis crossed the TSA boundary, our results should be interpreted cautiously given the low quality of evidence.Registration: https://www.crd.york.ac.uk/prospero (CRD42022369212) on October 2022.
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Affiliation(s)
- Jae Hee Kuh
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Republic of Korea
| | - Woo-Seok Jung
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Republic of Korea
| | - Leerang Lim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Republic of Korea
| | - Hae Kyung Yoo
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Republic of Korea
| | - Jae-Woo Ju
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Republic of Korea
| | - Ho-Jin Lee
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Republic of Korea
| | - Won Ho Kim
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-Ro, Jongno-Gu, Seoul, 03080, Republic of Korea.
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11
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Klitgaard TL, Schjørring OL, Nielsen FM, Meyhoff CS, Perner A, Wetterslev J, Rasmussen BS, Barbateskovic M. Higher versus lower fractions of inspired oxygen or targets of arterial oxygenation for adults admitted to the intensive care unit. Cochrane Database Syst Rev 2023; 9:CD012631. [PMID: 37700687 PMCID: PMC10498149 DOI: 10.1002/14651858.cd012631.pub3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
BACKGROUND This is an updated review concerning 'Higher versus lower fractions of inspired oxygen or targets of arterial oxygenation for adults admitted to the intensive care unit'. Supplementary oxygen is provided to most patients in intensive care units (ICUs) to prevent global and organ hypoxia (inadequate oxygen levels). Oxygen has been administered liberally, resulting in high proportions of patients with hyperoxemia (exposure of tissues to abnormally high concentrations of oxygen). This has been associated with increased mortality and morbidity in some settings, but not in others. Thus far, only limited data have been available to inform clinical practice guidelines, and the optimum oxygenation target for ICU patients is uncertain. Because of the publication of new trial evidence, we have updated this review. OBJECTIVES To update the assessment of benefits and harms of higher versus lower fractions of inspired oxygen (FiO2) or targets of arterial oxygenation for adults admitted to the ICU. SEARCH METHODS We searched the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, Embase, Science Citation Index Expanded, BIOSIS Previews, and LILACS. We searched for ongoing or unpublished trials in clinical trial registers and scanned the reference lists and citations of included trials. Literature searches for this updated review were conducted in November 2022. SELECTION CRITERIA We included randomised controlled trials (RCTs) that compared higher versus lower FiO2 or targets of arterial oxygenation (partial pressure of oxygen (PaO2), peripheral or arterial oxygen saturation (SpO2 or SaO2)) for adults admitted to the ICU. We included trials irrespective of publication type, publication status, and language. We excluded trials randomising participants to hypoxaemia (FiO2 below 0.21, SaO2/SpO2 below 80%, or PaO2 below 6 kPa) or to hyperbaric oxygen, and cross-over trials and quasi-randomised trials. DATA COLLECTION AND ANALYSIS Four review authors independently, and in pairs, screened the references identified in the literature searches and extracted the data. Our primary outcomes were all-cause mortality, the proportion of participants with one or more serious adverse events (SAEs), and quality of life. We analysed all outcomes at maximum follow-up. Only three trials reported the proportion of participants with one or more SAEs as a composite outcome. However, most trials reported on events categorised as SAEs according to the International Conference on Harmonisation Good Clinical Practice (ICH-GCP) criteria. We, therefore, conducted two analyses of the effect of higher versus lower oxygenation strategies using 1) the single SAE with the highest reported proportion in each trial, and 2) the cumulated proportion of participants with an SAE in each trial. Two trials reported on quality of life. Secondary outcomes were lung injury, myocardial infarction, stroke, and sepsis. No trial reported on lung injury as a composite outcome, but four trials reported on the occurrence of acute respiratory distress syndrome (ARDS) and five on pneumonia. We, therefore, conducted two analyses of the effect of higher versus lower oxygenation strategies using 1) the single lung injury event with the highest reported proportion in each trial, and 2) the cumulated proportion of participants with ARDS or pneumonia in each trial. We assessed the risk of systematic errors by evaluating the risk of bias in the included trials using the Risk of Bias 2 tool. We used the GRADEpro tool to assess the overall certainty of the evidence. We also evaluated the risk of publication bias for outcomes reported by 10b or more trials. MAIN RESULTS We included 19 RCTs (10,385 participants), of which 17 reported relevant outcomes for this review (10,248 participants). For all-cause mortality, 10 trials were judged to be at overall low risk of bias, and six at overall high risk of bias. For the reported SAEs, 10 trials were judged to be at overall low risk of bias, and seven at overall high risk of bias. Two trials reported on quality of life, of which one was judged to be at overall low risk of bias and one at high risk of bias for this outcome. Meta-analysis of all trials, regardless of risk of bias, indicated no significant difference from higher or lower oxygenation strategies at maximum follow-up with regard to mortality (risk ratio (RR) 1.01, 95% confidence interval (C)I 0.96 to 1.06; I2 = 14%; 16 trials; 9408 participants; very low-certainty evidence); occurrence of SAEs: the highest proportion of any specific SAE in each trial RR 1.01 (95% CI 0.96 to 1.06; I2 = 36%; 9466 participants; 17 trials; very low-certainty evidence), or quality of life (mean difference (MD) 0.5 points in participants assigned to higher oxygenation strategies (95% CI -2.75 to 1.75; I2 = 34%, 1649 participants; 2 trials; very low-certainty evidence)). Meta-analysis of the cumulated number of SAEs suggested benefit of a lower oxygenation strategy (RR 1.04 (95% CI 1.02 to 1.07; I2 = 74%; 9489 participants; 17 trials; very low certainty evidence)). However, trial sequential analyses, with correction for sparse data and repetitive testing, could reject a relative risk increase or reduction of 10% for mortality and the highest proportion of SAEs, and 20% for both the cumulated number of SAEs and quality of life. Given the very low-certainty of evidence, it is necessary to interpret these findings with caution. Meta-analysis of all trials indicated no statistically significant evidence of a difference between higher or lower oxygenation strategies on the occurrence of lung injuries at maximum follow-up (the highest reported proportion of lung injury RR 1.08, 95% CI 0.85 to 1.38; I2 = 0%; 2048 participants; 8 trials; very low-certainty evidence). Meta-analysis of all trials indicated harm from higher oxygenation strategies as compared with lower on the occurrence of sepsis at maximum follow-up (RR 1.85, 95% CI 1.17 to 2.93; I2 = 0%; 752 participants; 3 trials; very low-certainty evidence). Meta-analysis indicated no differences regarding the occurrences of myocardial infarction or stroke. AUTHORS' CONCLUSIONS In adult ICU patients, it is still not possible to draw clear conclusions about the effects of higher versus lower oxygenation strategies on all-cause mortality, SAEs, quality of life, lung injuries, myocardial infarction, stroke, and sepsis at maximum follow-up. This is due to low or very low-certainty evidence.
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Affiliation(s)
- Thomas L Klitgaard
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Centre for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Olav L Schjørring
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Centre for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Frederik M Nielsen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Centre for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Christian S Meyhoff
- Department of Anaesthesia and Intensive Care, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Anders Perner
- Centre for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
- Department of Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Jørn Wetterslev
- Centre for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
- Private Office, Hellerup, Denmark
| | - Bodil S Rasmussen
- Department of Anaesthesia and Intensive Care, Aalborg University Hospital, Aalborg, Denmark
- Department of Clinical Medicine, Aalborg University, Aalborg, Denmark
- Centre for Research in Intensive Care, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Marija Barbateskovic
- Copenhagen Trial Unit, Centre for Clinical Intervention Research, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
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12
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Nam K, Nam JS, Kim HB, Chung J, Hwang IE, Ju JW, Bae J, Lee S, Cho YJ, Shim JK, Kwak YL, Chin JH, Choi IC, Lee EH, Jeon Y. Effects of intraoperative inspired oxygen fraction (FiO 2 0.3 vs 0.8) on patients undergoing off-pump coronary artery bypass grafting: the CARROT multicenter, cluster-randomized trial. Crit Care 2023; 27:286. [PMID: 37443130 PMCID: PMC10339585 DOI: 10.1186/s13054-023-04558-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 06/29/2023] [Indexed: 07/15/2023] Open
Abstract
BACKGROUND To maintain adequate oxygenation is of utmost importance in intraoperative care. However, clinical evidence supporting specific oxygen levels in distinct surgical settings is lacking. This study aimed to compare the effects of 30% and 80% oxygen in off-pump coronary artery bypass grafting (OPCAB). METHODS This multicenter trial was conducted in three tertiary hospitals from August 2019 to August 2021. Patients undergoing OPCAB were cluster-randomized to receive either 30% or 80% oxygen intraoperatively, based on the month when the surgery was performed. The primary endpoint was the length of hospital stay. Intraoperative hemodynamic data were also compared. RESULTS A total of 414 patients were cluster-randomized. Length of hospital stay was not different in the 30% oxygen group compared to the 80% oxygen group (median, 7.0 days vs 7.0 days; the sub-distribution hazard ratio, 0.98; 95% confidence interval [CI] 0.83-1.16; P = 0.808). The incidence of postoperative acute kidney injury was significantly higher in the 30% oxygen group than in the 80% oxygen group (30.7% vs 19.4%; odds ratio, 1.94; 95% CI 1.18-3.17; P = 0.036). Intraoperative time-weighted average mixed venous oxygen saturation was significantly higher in the 80% oxygen group (74% vs 64%; P < 0.001). The 80% oxygen group also had a significantly greater intraoperative time-weighted average cerebral regional oxygen saturation than the 30% oxygen group (56% vs 52%; P = 0.002). CONCLUSIONS In patients undergoing OPCAB, intraoperative administration of 80% oxygen did not decrease the length of hospital stay, compared to 30% oxygen, but may reduce postoperative acute kidney injury. Moreover, compared to 30% oxygen, intraoperative use of 80% oxygen improved oxygen delivery in patients undergoing OPCAB. Trial registration ClinicalTrials.gov (NCT03945565; April 8, 2019).
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Affiliation(s)
- Karam Nam
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea
| | - Jae-Sik Nam
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Hye-Bin Kim
- Department of Anesthesiology and Pain Medicine, Severance Hospital, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
- Department of Anesthesiology and Pain Medicine, Korea University Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Jaeyeon Chung
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea
- Medical Service Corps of the First Logistics Support Command, Wonju, Gangwon State, Republic of Korea
| | - In Eob Hwang
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea
| | - Jae-Woo Ju
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea
| | - Jinyoung Bae
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea
- Department of Anesthesiology and Pain Medicine, Ajou University Medical Center, Ajou University School of Medicine, Suwon, Gyeonggi Province, Republic of Korea
| | - Seohee Lee
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea
| | - Youn Joung Cho
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea
| | - Jae-Kwang Shim
- Department of Anesthesiology and Pain Medicine, Severance Hospital, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Young-Lan Kwak
- Department of Anesthesiology and Pain Medicine, Severance Hospital, Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Ji-Hyun Chin
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - In-Cheol Choi
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea
| | - Eun-Ho Lee
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul, 05505, Republic of Korea.
- Hana Anesthesia Clinic, Seoul, Republic of Korea.
| | - Yunseok Jeon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, 101 Daehak-ro, Jongno-gu, Seoul, 03080, Republic of Korea.
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13
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Qin H, Zhuang W, Liu X, Wu J, Li S, Wang Y, Liu X, Chen C, Zhang H. Targeting CXCR1 alleviates hyperoxia-induced lung injury through promoting glutamine metabolism. Cell Rep 2023; 42:112745. [PMID: 37405911 DOI: 10.1016/j.celrep.2023.112745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2022] [Revised: 04/22/2023] [Accepted: 06/19/2023] [Indexed: 07/07/2023] Open
Abstract
Although increasing evidence suggests potential iatrogenic injury from supplemental oxygen therapy, significant exposure to hyperoxia in critically ill patients is inevitable. This study shows that hyperoxia causes lung injury in a time- and dose-dependent manner. In addition, prolonged inspiration of oxygen at concentrations higher than 80% is found to cause redox imbalance and impair alveolar microvascular structure. Knockout of C-X-C motif chemokine receptor 1 (Cxcr1) inhibits the release of reactive oxygen species (ROS) from neutrophils and synergistically enhances the ability of endothelial cells to eliminate ROS. We also combine transcriptome, proteome, and metabolome analysis and find that CXCR1 knockdown promotes glutamine metabolism and leads to reduced glutathione by upregulating the expression of malic enzyme 1. This preclinical evidence suggests that a conservative oxygen strategy should be recommended and indicates that targeting CXCR1 has the potential to restore redox homeostasis by reducing oxygen toxicity when inspiratory hyperoxia treatment is necessary.
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Affiliation(s)
- Hao Qin
- Thoracic Surgery Laboratory, Xuzhou Medical University, Xuzhou, Jiangsu 221006, China; Department of Thoracic Surgery, Affiliated Hospital of Xuzhou Medical University, 99 West Huaihai Road, Xuzhou 221006, Jiangsu, China
| | - Wei Zhuang
- Shanghai Key Laboratory of Signaling and Disease Research, School of Life Sciences and Technology, Tongji University, Shanghai 200092, China
| | - Xiucheng Liu
- Thoracic Surgery Laboratory, Xuzhou Medical University, Xuzhou, Jiangsu 221006, China; Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Junqi Wu
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China; Shanghai Engineering Research Center of Lung Transplantation, Shanghai 200433, China
| | - Shenghui Li
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Yang Wang
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China
| | - Xiangming Liu
- Thoracic Surgery Laboratory, Xuzhou Medical University, Xuzhou, Jiangsu 221006, China; Department of Thoracic Surgery, Affiliated Hospital of Xuzhou Medical University, 99 West Huaihai Road, Xuzhou 221006, Jiangsu, China
| | - Chang Chen
- Department of Thoracic Surgery, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, China; Shanghai Engineering Research Center of Lung Transplantation, Shanghai 200433, China
| | - Hao Zhang
- Thoracic Surgery Laboratory, Xuzhou Medical University, Xuzhou, Jiangsu 221006, China; Department of Thoracic Surgery, Affiliated Hospital of Xuzhou Medical University, 99 West Huaihai Road, Xuzhou 221006, Jiangsu, China.
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14
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Skrifvars MB, Meyhoff CS. Optimal oxygen targets in patients undergoing general anesthesia for major non-cardiac surgery-How to handle the conflict between observational and randomized trials? Acta Anaesthesiol Scand 2023; 67:686-687. [PMID: 36973884 DOI: 10.1111/aas.14243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 03/21/2023] [Indexed: 03/29/2023]
Affiliation(s)
- Markus B Skrifvars
- Department of Emergency Care and Services, Helsinki University Hospital and University of Helsinki, Helsinki, Finland
| | - Christian S Meyhoff
- Department of Anaesthesia and Intensive Care, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
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15
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Brat K, Chovanec Z, Mitas L, Sramek V, Olson LJ, Cundrle I. Hyperoxemia post thoracic surgery - Does it matter? Heliyon 2023; 9:e17606. [PMID: 37416669 PMCID: PMC10320252 DOI: 10.1016/j.heliyon.2023.e17606] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 06/19/2023] [Accepted: 06/22/2023] [Indexed: 07/08/2023] Open
Abstract
Introduction Post-operative oxygen therapy is used to prevent hypoxemia and surgical site infection. However, with improvements of anesthesia techniques, post-operative hypoxemia incidence is declining and the benefits of oxygen on surgical site infection have been questioned. Moreover, hyperoxemia might have adverse effects on the pulmonary and cardiovascular systems. We hypothesized hyperoxemia post thoracic surgery is associated with post-operative pulmonary and cardiovascular complications. Methods Consecutive lung resection patients were included in this post-hoc analysis. Post-operative pulmonary and cardiovascular complications were prospectively assessed during the first 30 post-operative days, or hospital stay. Arterial blood gases were analyzed at 1, 6 and 12 h after surgery. Hyperoxemia was defined as arterial partial pressure of oxygen (PaO2)>100 mmHg. Patients with hyperoxemia duration in at least two adjacent time points were considered as hyperoxemic. Student t-test, Mann-Whitney U test and two-tailed Fisher exact test were used for group comparison. P values < 0.05 were considered statistically significant. Results Three hundred sixty-three consecutive patients were included in this post-hoc analysis. Two hundred five patients (57%), were considered hyperoxemic and included in the hyperoxemia group. Patients in the hyperoxemia group had significantly higher PaO2 at 1, 6 and 12 h after surgery (p < 0.05). Otherwise, there was no significant difference in age, sex, comorbidities, pulmonary function tests parameters, lung surgery procedure, incidence of post-operative pulmonary and cardiovascular complications, intensive care unit and hospital length of stay and 30-day mortality. Conclusion Hyperoxemia after lung resection surgery is common and not associated with post-operative complications or 30-day mortality.
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Affiliation(s)
- Kristian Brat
- Department of Respiratory Diseases, University Hospital Brno, Czech Republic
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Zdenek Chovanec
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
- First Department of Surgery, St. Anne's University Hospital, Brno, Czech Republic
| | - Ladislav Mitas
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
- Department of Surgery, University Hospital Brno, Czech Republic
| | - Vladimir Sramek
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
- Department of Anesthesiology and Intensive Care, St. Anne's University Hospital Brno, Brno, Czech Republic
| | - Lyle J. Olson
- Department of Cardiovascular Diseases, Mayo Clinic, Rochester, MN, USA
| | - Ivan Cundrle
- Faculty of Medicine, Masaryk University, Brno, Czech Republic
- International Clinical Research Center, St. Anne's University Hospital Brno, Brno, Czech Republic
- Department of Anesthesiology and Intensive Care, St. Anne's University Hospital Brno, Brno, Czech Republic
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Reiterer C, Fleischmann E, Kabon B, Taschner A, Kurz A, Adamowitsch N, von Sonnenburg MF, Fraunschiel M, Graf A. Hemodynamic effects of intraoperative 30% versus 80% oxygen concentrations: an exploratory analysis. Front Med (Lausanne) 2023; 10:1200223. [PMID: 37324125 PMCID: PMC10265637 DOI: 10.3389/fmed.2023.1200223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 05/05/2023] [Indexed: 06/17/2023] Open
Abstract
Background Supplemental oxygen leads to an increase in peripheral vascular resistance which finally increases systemic blood pressure in healthy subjects and patients with coronary artery disease, heart failure, undergoing heart surgery, and with sepsis. However, it is unknown whether this effect can also be observed in anesthetized patients having surgery. Thus, we evaluated in this exploratory analysis of a randomized controlled trial the effect of 80% versus 30% oxygen on intraoperative blood pressure and heart rate. Methods We present data from a previous study including 258 patients, who were randomized to a perioperative inspiratory FiO2 of 0.8 (128 patients) versus 0.3 (130 patients) for major abdominal surgery. Continuous arterial blood pressure values were recorded every three seconds and were exported from the electronic anesthesia record system. We calculated time-weighted average (TWA) and Average Real Variability (ARV) of mean arterial blood pressure and of heart rate. Results There was no significant difference in TWA of mean arterial pressure between the 80% (80 mmHg [76, 85]) and 30% (81 mmHg [77, 86]) oxygen group (effect estimate -0.16 mmHg, CI -1.83 to 1.51; p = 0.85). There was also no significant difference in TWA of heart rate between the 80 and 30% oxygen group (median TWA of heart rate in the 80% oxygen group: 65 beats.min-1 [58, 72], and in the 30% oxygen group: 64 beats.min-1 [58; 70]; effect estimate: 0.12 beats.min-1, CI -2.55 to 2.8, p = 0.94). Also for ARV values, no significant differences between groups could be detected. Conclusion In contrast to previous results, we did not observe a significant increase in blood pressure or a significant decrease in heart rate in patients, who received 80% oxygen as compared to patients, who received 30% oxygen during surgery and for the first two postoperative hours. Thus, hemodynamic effects of supplemental oxygen might play a negligible role in anesthetized patients. Clinical Trail Registration https://clinicaltrials.gov/ct2/show/NCT03366857?term=vienna&cond=oxygen&draw=2&rank=1.
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Affiliation(s)
- Christian Reiterer
- Department of Anesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
- Outcome Research Consortium, Cleveland, OH, United States
| | - Edith Fleischmann
- Department of Anesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
- Outcome Research Consortium, Cleveland, OH, United States
| | - Barbara Kabon
- Department of Anesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
- Outcome Research Consortium, Cleveland, OH, United States
| | - Alexander Taschner
- Department of Anesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
- Outcome Research Consortium, Cleveland, OH, United States
| | - Andrea Kurz
- Outcome Research Consortium, Cleveland, OH, United States
- Department of General Anesthesiology, Cleveland Clinic, Anesthesia Institute, Cleveland, OH, United States
- Department of General Anesthesiology, Emergency Medicine and Intensive Care Medicine, Medical University of Graz, Graz, Austria
| | - Nikolas Adamowitsch
- Department of Anesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, Vienna, Austria
| | | | - Melanie Fraunschiel
- IT Systems and Communications, Medical University of Vienna, Vienna, Austria
| | - Alexandra Graf
- Center for Medical Data Science, Medical University of Vienna, Vienna, Austria
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17
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Stuby J, Kaserer A, Ott S, Ruetzler K, Rössler J. [Perioperative hyperoxia-More harmful than beneficial?]. DIE ANAESTHESIOLOGIE 2023; 72:342-347. [PMID: 37084143 DOI: 10.1007/s00101-023-01274-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/01/2023] [Indexed: 04/22/2023]
Abstract
BACKGROUND The ideal perioperative oxygen concentration is controversial and study results are inconsistent. OBJECTIVE Current knowledge on the beneficial and adverse effects of perioperative hyperoxia. MATERIAL AND METHODS Narrative review RESULTS: Perioperative hyperoxia is unlikely to increase the incidence of atelectasis, pulmonary or cardiovascular complications or mortality. Few and small potential beneficial effects, such as reduction of surgical wound infections or postoperative nausea and vomiting have been demonstrated. According to the current state of evidence, it is recommended to avoid perioperative hyperoxia and to aim for normoxia instead.
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Affiliation(s)
- Johann Stuby
- Institut für Anästhesiologie, Universitätsspital Zürich, 8091, Zürich, Schweiz.
| | - Alexander Kaserer
- Institut für Anästhesiologie, Universitätsspital Zürich, 8091, Zürich, Schweiz
| | - Sascha Ott
- Klinik für Kardioanästhesiologie und Intensivmedizin, Deutsches Herzzentrum Berlin, 13353, Berlin, Deutschland
- Klinik für Kardioanästhesiologie und Intensivmedizin, Charité Universitätsmedizin Berlin, 13353, Berlin, Deutschland
- DZHK (Deutsches Zentrum für Herz-Kreislauf-Forschung), Standort Berlin, Berlin, Deutschland
| | - Kurt Ruetzler
- Department of Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, USA
- Department of General Anesthesia, Anesthesiology Institute, Cleveland Clinic, Cleveland, USA
| | - Julian Rössler
- Department of Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, USA
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18
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Reydellet L, Le Saux A, Blasco V, Nafati C, Harti-Souab K, Armand R, Lannelongue A, Gregoire E, Hardwigsen J, Albanese J, Chopinet S. Impact of Hyperoxia after Graft Reperfusion on Lactate Level and Outcomes in Adults Undergoing Orthotopic Liver Transplantation. J Clin Med 2023; 12:jcm12082940. [PMID: 37109276 PMCID: PMC10145037 DOI: 10.3390/jcm12082940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2023] [Revised: 04/06/2023] [Accepted: 04/13/2023] [Indexed: 04/29/2023] Open
Abstract
BACKGROUND Hyperoxia is common during liver transplantation (LT), without being supported by any guidelines. Recent studies have shown the potential deleterious effect of hyperoxia in similar models of ischemia-reperfusion. Hyperoxia after graft reperfusion during orthotopic LT could increase lactate levels and worsen patient outcomes. METHODS We conducted a retrospective and monocentric pilot study. All adult patients who underwent LT from 26 July 2013 to 26 December 2017 were considered for inclusion. Patients were classified into two groups according to oxygen levels before graft reperfusion: the hyperoxic group (PaO2 > 200 mmHg) and the nonhyperoxic group (PaO2 < 200 mmHg). The primary endpoint was arterial lactatemia 15 min after graft revascularization. Secondary endpoints included postoperative clinical outcomes and laboratory data. RESULTS A total of 222 liver transplant recipients were included. Arterial lactatemia after graft revascularization was significantly higher in the hyperoxic group (6.03 ± 4 mmol/L) than in the nonhyperoxic group (4.81 ± 2 mmol/L), p < 0.01. The postoperative hepatic cytolysis peak, duration of mechanical ventilation and duration of ileus were significantly increased in the hyperoxic group. CONCLUSIONS In the hyperoxic group, the arterial lactatemia, the hepatic cytolysis peak, the mechanical ventilation and the postoperative ileus were higher than in the nonhyperoxic group, suggesting that hyperoxia worsens short-term outcomes and could lead to increase ischemia-reperfusion injury after liver transplantation. A multicenter prospective study should be performed to confirm these results.
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Affiliation(s)
- Laurent Reydellet
- Department of Anaesthesia and Intensive Care, Hôpital la Timone, 13005 Marseille, France
| | - Audrey Le Saux
- Department of Anaesthesia and Intensive Care, Hôpital la Timone, 13005 Marseille, France
| | - Valery Blasco
- Department of Anaesthesia and Intensive Care, Hôpital la Timone, 13005 Marseille, France
| | - Cyril Nafati
- Department of Anaesthesia and Intensive Care, Hôpital la Timone, 13005 Marseille, France
| | - Karim Harti-Souab
- Department of Anaesthesia and Intensive Care, Hôpital la Timone, 13005 Marseille, France
| | - Romain Armand
- Department of Anaesthesia and Intensive Care, Hôpital la Timone, 13005 Marseille, France
| | - Ariane Lannelongue
- Department of Anaesthesia and Intensive Care, Carémeau Hospital, 30029 Nîmes, France
| | - Emilie Gregoire
- Department of Digestive Surgery and Liver Transplantation, Hôpital la Timone, 13005 Marseille, France
- European Center for Medical Imaging Research CERIMED/LIIE, Aix-Marseille Université, 13385 Marseille, France
| | - Jean Hardwigsen
- Department of Digestive Surgery and Liver Transplantation, Hôpital la Timone, 13005 Marseille, France
- École de Médecine, Faculté des Sciences Médicales et Paramédicales, Aix-Marseille Université, 27 Boulevard Jean Moulin, 13385 Marseille, France
| | - Jacques Albanese
- Department of Anaesthesia and Intensive Care, Hôpital la Timone, 13005 Marseille, France
- École de Médecine, Faculté des Sciences Médicales et Paramédicales, Aix-Marseille Université, 27 Boulevard Jean Moulin, 13385 Marseille, France
| | - Sophie Chopinet
- Department of Digestive Surgery and Liver Transplantation, Hôpital la Timone, 13005 Marseille, France
- European Center for Medical Imaging Research CERIMED/LIIE, Aix-Marseille Université, 13385 Marseille, France
- École de Médecine, Faculté des Sciences Médicales et Paramédicales, Aix-Marseille Université, 27 Boulevard Jean Moulin, 13385 Marseille, France
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19
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Postoperative Pulmonary Complications in the ENIGMA II Trial: A Post Hoc Analysis. Anesthesiology 2023; 138:354-363. [PMID: 36645804 DOI: 10.1097/aln.0000000000004497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
BACKGROUND Nitrous oxide promotes absorption atelectasis in poorly ventilated lung segments at high inspired concentrations. The Evaluation of Nitrous oxide In the Gas Mixture for Anesthesia (ENIGMA) trial found a higher incidence of postoperative pulmonary complications and wound sepsis with nitrous oxide anesthesia in major surgery compared to a fraction of inspired oxygen of 0.8 without nitrous oxide. The larger ENIGMA II trial randomized patients to nitrous oxide or air at a fraction of inspired oxygen of 0.3 but found no effect on wound infection or sepsis. However, postoperative pulmonary complications were not measured. In the current study, post hoc data were collected to determine whether atelectasis and pneumonia incidences were higher with nitrous oxide in patients who were recruited to the Australian cohort of ENIGMA II. METHODS Digital health records of patients who participated in the trial at 10 Australian hospitals were examined blinded to trial treatment allocation. The primary endpoint was the incidence of atelectasis, defined as lung atelectasis or collapse reported on chest radiology. Pneumonia, as a secondary endpoint, required a diagnostic chest radiology report with fever, leukocytosis, or positive sputum culture. Comparison of the nitrous oxide and nitrous oxide-free groups was done according to intention to treat using chi-square tests. RESULTS Data from 2,328 randomized patients were included in the final data set. The two treatment groups were similar in surgical type and duration, risk factors, and perioperative management recorded for ENIGMA II. There was a 19.3% lower incidence of atelectasis with nitrous oxide (171 of 1,169 [14.6%] vs. 210 of 1,159 [18.1%]; odds ratio, 0.77; 95% CI, 0.62 to 0.97; P = 0.023). There was no difference in pneumonia incidence (60 of 1,169 [5.1%] vs. 52 of 1159 [4.5%]; odds ratio, 1.15; 95% CI, 0.77 to 1.72; P = 0.467) or combined pulmonary complications (odds ratio, 0.84; 95% CI, 0.69 to 1.03; P = 0.093). CONCLUSIONS In contrast to the earlier ENIGMA trial, nitrous oxide anesthesia in the ENIGMA II trial was associated with a lower incidence of lung atelectasis, but not pneumonia, after major surgery. EDITOR’S PERSPECTIVE
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20
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Min WK, Jin S, Choi YJ, Won YJ, Lee K, Lim CH. Lung ultrasound score-based assessment of postoperative atelectasis in obese patients according to inspired oxygen concentration: A prospective, randomized-controlled study. Medicine (Baltimore) 2023; 102:e32990. [PMID: 36800571 PMCID: PMC9936007 DOI: 10.1097/md.0000000000032990] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
BACKGROUND According to a recent meta-analysis, in patients with a body mass index (BMI) ≥ 30, a high fraction of inhaled oxygen (FiO2) did not increase postoperative atelectasis. However, a high FiO2 generally increases the risk of postoperative atelectasis. Therefore, this study aimed to evaluate the effect of FiO2 on the development of atelectasis in obese patients using the modified lung ultrasound score (LUSS). METHODS Patients were assigned to 4 groups: BMI ≥ 30: group A (n = 21) and group B (n = 20) and normal BMI: group C (n = 22) and group D (n = 21). Groups A and C were administered 100% O2 during preinduction and emergence and 50% O2 during anesthesia. Groups B and D received 40% O2 for anesthesia. The modified LUSS was assessed before and 20 min after arrival to the postanesthesia care unit (PACU). RESULTS The difference between the modified LUSS preinduction and PACU was significantly higher in group A with a BMI ≥ 30 (P = .006); however, there was an insignificant difference between groups C and D in the normal BMI group (P = .076). CONCLUSION High FiO2 had a greater effect on the development of atelectasis in obese patients than did low FiO2; however, in normal-weight individuals, FiO2 did not have a significant effect on postoperative atelectasis.
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Affiliation(s)
- Won Kee Min
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Gyeonggi- do, Republic of Korea
| | - Sejong Jin
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Gyeonggi- do, Republic of Korea
- Department of Neuroscience, Korea University College of Medicine, Seoul, Republic of Korea
| | - Yoon Ji Choi
- Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, Gyeonggi- do, Republic of Korea
- * Correspondence: Yoon Ji Choi, Department of Anesthesiology and Pain Medicine, Korea University Ansan Hospital, 123, Jeokgeum-ro, Danwon-gu, Ansan-si, Gyeonggi-do 15355, Republic of Korea (e-mail: )
| | - Young Ju Won
- Department of Anesthesiology and Pain Medicine, Guro Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Kaehong Lee
- Department of Anesthesiology and Pain Medicine, Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea
| | - Choon-Hak Lim
- Department of Anesthesiology and Pain Medicine, Anam Hospital, Korea University College of Medicine, Seoul, Republic of Korea
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21
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Figiel W, Niewiński G, Grąt M, Krawczyk M, Stypułkowski J, Lewandowski Z, Krasnodębski M, Patkowski W, Zieniewicz K. Postoperative Supplemental Oxygen in Liver Transplantation (PSOLT) does not reduce the rate of infections: results of a randomized controlled trial. BMC Med 2023; 21:51. [PMID: 36782227 PMCID: PMC9924861 DOI: 10.1186/s12916-023-02741-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2022] [Accepted: 01/18/2023] [Indexed: 02/15/2023] Open
Abstract
BACKGROUND Despite inconsistent evidence, international guidelines underline the importance of perioperative hyperoxygenation in prevention of postoperative infections. Further, data on safety and efficacy of this method in liver transplant setting are lacking. The aim was to evaluate efficacy and safety of postoperative hyperoxygenation in prophylaxis of infections after liver transplantation. METHODS In this randomized controlled trial, patients undergoing liver transplantation were randomly assigned to either 28% or 80% fraction of inspired oxygen (FiO2) for 6 postoperative hours. Infections occurring during 30-day post-transplant period were the primary outcome measure. Secondary outcome measures included 90-day mortality, 90-day severe morbidity, 30-day pulmonary complications, durations of hospital and intensive care unit stay, and 5-day postoperative bilirubin concentration, alanine and aspartate transaminase activity, and international normalized ratio (INR) (clinicatrials.gov NCT02857855). RESULTS A total of 193 patients were included and randomized to 28% (n = 99) and 80% (n = 94) FiO2. With similar patient, operative, and donor characteristics in both groups, infections occurred in 34.0% (32/94) of patients assigned to 80% FiO2 as compared to 23.2% (23/99) of patients assigned to 28% FiO2 (p = 0.112). Patients randomized to 80% FiO2 more frequently developed severe complications (p = 0.035), stayed longer in the intensive care unit (p = 0.033), and had higher bilirubin concentration over first 5 post-transplant days (p = 0.043). No significant differences were found regarding mortality, duration of hospital stay, pulmonary complications, and 5-day aspartate and alanine transaminase activity and INR. CONCLUSIONS Postoperative hyperoxygenation should not be used for prophylaxis of infections after liver transplantation due to the lack of efficacy. TRIAL REGISTRATION ClinicalTrials.gov NCT02857855. Registered 7 July 2016.
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Affiliation(s)
- Wojciech Figiel
- Department of General, Transplant and Liver Surgery, Medical University of Warsaw, Banacha 1A, 02-097, Warsaw, Poland
| | - Grzegorz Niewiński
- Department of General, Transplant and Liver Surgery, Medical University of Warsaw, Banacha 1A, 02-097, Warsaw, Poland
| | - Michał Grąt
- Department of General, Transplant and Liver Surgery, Medical University of Warsaw, Banacha 1A, 02-097, Warsaw, Poland.
| | - Marek Krawczyk
- Department of General, Transplant and Liver Surgery, Medical University of Warsaw, Banacha 1A, 02-097, Warsaw, Poland
| | - Jan Stypułkowski
- Department of General, Transplant and Liver Surgery, Medical University of Warsaw, Banacha 1A, 02-097, Warsaw, Poland
| | - Zbigniew Lewandowski
- Department of Epidemiology and Biostatistics, Medical University of Warsaw, Oczki 3, 02-007, Warsaw, Poland
| | - Maciej Krasnodębski
- Department of General, Transplant and Liver Surgery, Medical University of Warsaw, Banacha 1A, 02-097, Warsaw, Poland
| | - Waldemar Patkowski
- Department of General, Transplant and Liver Surgery, Medical University of Warsaw, Banacha 1A, 02-097, Warsaw, Poland
| | - Krzysztof Zieniewicz
- Department of General, Transplant and Liver Surgery, Medical University of Warsaw, Banacha 1A, 02-097, Warsaw, Poland
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22
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El Maleh Y, Fasquel C, Quesnel C, Garnier M. Updated meta-analysis on intraoperative inspired fraction of oxygen and the risk of surgical site infection in adults undergoing general and regional anesthesia. Sci Rep 2023; 13:2465. [PMID: 36774366 PMCID: PMC9922261 DOI: 10.1038/s41598-023-27588-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 01/04/2023] [Indexed: 02/13/2023] Open
Abstract
This updated meta-analysis aims at exploring whether the use of systematic high vs low intraoperative oxygen fraction (FiO2) may decrease the incidence of postoperative surgical site infection during general (GA) or regional anesthesia (RA). PubMed, Cochrane CENTRAL, ClinicalTrials.gov databases were searched from January 1st, 1999 and July, 1st 2022, for randomized and quasi-randomized controlled trials that included patients in a high and low FiO2 groups and reported the incidence of SSI. The meta-analysis was conducted with a DerSimonian and Laird random-effects model. Thirty studies (24 for GA and 6 for RA) totaling 18,055 patients (15,871 for GA and 2184 for RA) were included. We have low-to-moderate-quality evidence that high FiO2 (mainly 80%) was not associated with a reduction of SSI incidence compared to low FiO2 (mainly 30%) in all patients (RR 0.90, 95%CI 0.79-1.03). Moderate inconsistency existed between studies (I2 = 38%). Subgroup analyses showed a moderate protective effect in patients undergoing GA (RR 0.86, 95%CI 0.75-0.99) (low level of evidence), while high FiO2 was not associated with a reduction of SSI in patients undergoing RA (RR 1.17, 95%CI 0.90-1.52) (moderate level of evidence). Sensitivity analyses restricted to patients ventilated without nitrous oxide (n = 20 studies), to patients operated from abdominal surgeries (n = 21 studies), and to patients suffering from deep SSI (n = 13 studies), all showed the absence of any significant effect of high FiO2. As a conclusion there is no compelling evidence that high FiO2 can improve postoperative patient's outcome on its own when good SSI prevention practices are properly applied. Recent well-designed and adequately powered randomized controlled trials add further weight to these results.
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Affiliation(s)
- Yoann El Maleh
- Sorbonne University, GRC29, Assistance Publique-Hôpitaux de Paris (APHP), DMU DREAM, Anesthesiology and Critical Care Medicine Department, Tenon University Hospital, 4 rue de la Chine, 75020, Paris, France
| | - Charlotte Fasquel
- Centre Hospitalier Régional Universitaire de Brest, Service d'Anesthésie-Réanimation et Médecine Périopératoire, 29200, Brest, France
| | - Christophe Quesnel
- Sorbonne University, GRC29, Assistance Publique-Hôpitaux de Paris (APHP), DMU DREAM, Anesthesiology and Critical Care Medicine Department, Tenon University Hospital, 4 rue de la Chine, 75020, Paris, France
| | - Marc Garnier
- Sorbonne University, GRC29, Assistance Publique-Hôpitaux de Paris (APHP), DMU DREAM, Anesthesiology and Critical Care Medicine Department, Tenon University Hospital, 4 rue de la Chine, 75020, Paris, France.
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23
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Effect of Supplemental Oxygen on von Willebrand Factor Activity and Ristocetin Cofactor Activity in Patients at Risk for Cardiovascular Complications Undergoing Moderate-to High-Risk Major Noncardiac Surgery-A Secondary Analysis of a Randomized Trial. J Clin Med 2023; 12:jcm12031222. [PMID: 36769870 PMCID: PMC9918071 DOI: 10.3390/jcm12031222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 01/30/2023] [Accepted: 01/31/2023] [Indexed: 02/05/2023] Open
Abstract
Increased von Willebrand Factor (vWF) activity mediates platelet adhesion and might be a contributor to the development of thrombotic complications after surgery. Although in vitro studies have shown that hyperoxia induces endovascular damage, the effect of perioperative supplemental oxygen as a possible trigger for increased vWF activity has not been investigated yet. We tested our primary hypothesis that the perioperative administration of 80% oxygen concentration increases postoperative vWF activity as compared to 30% oxygen concentration in patients at risk of cardiovascular complications undergoing major noncardiac surgery. A total of 260 patients were randomly assigned to receive 80% versus 30% oxygen throughout surgery and for two hours postoperatively. We assessed vWF activity and Ristocetin cofactor activity in all patients shortly before the induction of anesthesia, within two hours after surgery and on the first and third postoperative day. Patient characteristics were similar in both groups. We found no significant difference in vWF activity in the overall perioperative time course between both randomization groups. We observed significantly increased vWF activity in the overall study population throughout the postoperative time course. Perioperative supplemental oxygen showed no significant effect on postoperative vWF and Ristocetin cofactor activity in cardiac risk patients undergoing major noncardiac surgery. In conclusion, we found no significant influence of supplemental oxygen in patients undergoing major non-cardiac surgery on postoperative vWF activity and Ristocetin cofactor activity.
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24
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Douin DJ, Fernandez-Bustamante A. Adjust Intraoperative Oxygen Therapy for Oxygenation Reasons Only! Anesthesiology 2023; 138:10-12. [PMID: 36520076 PMCID: PMC9805367 DOI: 10.1097/aln.0000000000004440] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- David J Douin
- Department of Anesthesiology, University of Colorado School of Medicine, Aurora, CO
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25
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Baekgaard J, Arleth T, Siersma V, Hinkelbein J, Yücetepe S, Klimek M, van Vledder MG, Van Lieshout EMM, Mikkelsen S, Zwisler ST, Andersen M, Fenger-Eriksen C, Isbye DL, Rasmussen LS, Steinmetz J. Comparing restrictive versus liberal oxygen strategies for trauma patients - the TRAUMOX2 trial: protocol for a randomised clinical trial. BMJ Open 2022; 12:e064047. [PMID: 36344005 PMCID: PMC9644337 DOI: 10.1136/bmjopen-2022-064047] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
INTRODUCTION Supplemental oxygen is commonly used in trauma patients, although it may lead to hyperoxaemia that has been associated with pulmonary complications and increased mortality. The primary objective of this trial, TRAUMOX2, is to compare a restrictive versus liberal oxygen strategy the first 8 hours following trauma. METHODS AND ANALYSIS TRAUMOX2 is an investigator-initiated, international, parallel-grouped, superiority, outcome assessor-blinded and analyst-blinded, randomised, controlled, clinical trial.Adult patients with suspected major trauma are randomised to eight hours of a restrictive or liberal oxygen strategy. The restrictive group receives the lowest dosage of oxygen (>21%) that ensures an SpO2 of 94%. The liberal group receives 12-15 L O2/min or FiO2=0.6-1.0.The primary outcome is a composite of 30-day mortality and/or development of major respiratory complications (pneumonia and/or acute respiratory distress syndrome).With 710 participants in each arm, we will be able to detect a 33% risk reduction with a restrictive oxygen strategy if the incidence of our primary outcome is 15% in the liberal group. ETHICS AND DISSEMINATION TRAUMOX2 is carried out in accordance with the Helsinki II Declaration. It has been approved by the Danish Committee on Health Research Ethics for the Capital Region (H-21018062) and The Danish Medicines Agency, as well as the Dutch Medical Research Ethics Committee Erasmus MS (NL79921.078.21 and MEC-2021-0932). A website (www.traumox2.org) is available for updates and study results will be published in an international peer-reviewed scientific journal. TRIAL REGISTRATION NUMBERS EudraCT 2021-000556-19; NCT05146700.
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Affiliation(s)
- Josefine Baekgaard
- Department of Anaesthesia and Trauma Centre, Centre of Head and Orthopaedics, University of Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Tobias Arleth
- Department of Anaesthesia and Trauma Centre, Centre of Head and Orthopaedics, University of Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Volkert Siersma
- The Research Unit for General Practice and Section of General Practice, Department of Public Health, University of Copenhagen, Copenhagen, Denmark
| | - Jochen Hinkelbein
- Department of Anaesthesiology and Intensive Care Medicine, Faculty of Medicine, University Hospital Cologne, Cologne, Nordrhein-Westfalen, Germany
| | - Sirin Yücetepe
- Department of Anaesthesiology and Intensive Care Medicine, Faculty of Medicine, University Hospital Cologne, Cologne, Nordrhein-Westfalen, Germany
| | - Markus Klimek
- Department of Anaesthesiology, University Medical Centre Rotterdam, Erasmus MC, Rotterdam, Zuid-Holland, Netherlands
| | - Mark G van Vledder
- Trauma Research Unit Department of Surgery, University Medical Centre Rotterdam, Erasmus MC, Rotterdam, Zuid-Holland, Netherlands
| | - Esther M M Van Lieshout
- Trauma Research Unit Department of Surgery, University Medical Centre Rotterdam, Erasmus MC, Rotterdam, Zuid-Holland, Netherlands
| | - Søren Mikkelsen
- The Prehospital Research Unit, University of Southern Denmark, Odense, Syddanmark, Denmark
- Department of Anaesthesiology and Intensive Care, Odense University Hospital, Odense, Syddanmark, Denmark
| | - Stine Thorhauge Zwisler
- The Prehospital Research Unit, University of Southern Denmark, Odense, Syddanmark, Denmark
- Department of Anaesthesiology and Intensive Care, Odense University Hospital, Odense, Syddanmark, Denmark
| | - Mikkel Andersen
- Department of Anaesthesiology, Aarhus University Hospital, Aarhus, Denmark
| | | | - Dan L Isbye
- Department of Anaesthesia and Trauma Centre, Centre of Head and Orthopaedics, University of Copenhagen, Rigshospitalet, Copenhagen, Denmark
- Institute of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Lars S Rasmussen
- Department of Anaesthesia and Trauma Centre, Centre of Head and Orthopaedics, University of Copenhagen, Rigshospitalet, Copenhagen, Denmark
- Institute of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Jacob Steinmetz
- Department of Anaesthesia and Trauma Centre, Centre of Head and Orthopaedics, University of Copenhagen, Rigshospitalet, Copenhagen, Denmark
- Institute of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
- Danish Air Ambulance, Aarhus, Denmark
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Mancardi D, Ottolenghi S, Attanasio U, Tocchetti CG, Paroni R, Pagliaro P, Samaja M. Janus, or the Inevitable Battle Between Too Much and Too Little Oxygen. Antioxid Redox Signal 2022; 37:972-989. [PMID: 35412859 DOI: 10.1089/ars.2021.0232] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Significance: Oxygen levels are key regulators of virtually every living mammalian cell, under both physiological and pathological conditions. Starting from embryonic and fetal development, through the growth, onset, and progression of diseases, oxygen is a subtle, although pivotal, mediator of key processes such as differentiation, proliferation, autophagy, necrosis, and apoptosis. Hypoxia-driven modifications of cellular physiology are investigated in depth or for their clinical and translational relevance, especially in the ischemic scenario. Recent Advances: The mild or severe lack of oxygen is, undoubtedly, related to cell death, although abundant evidence points at oscillating oxygen levels, instead of permanent low pO2, as the most detrimental factor. Different cell types can consume oxygen at different rates and, most interestingly, some cells can shift from low to high consumption according to the metabolic demand. Hence, we can assume that, in the intracellular compartment, oxygen tension varies from low to high levels depending on both supply and consumption. Critical Issues: The positive balance between supply and consumption leads to a pro-oxidative environment, with some cell types facing hypoxia/hyperoxia cycles, whereas some others are under fairly constant oxygen tension. Future Directions: Within this frame, the alterations of oxygen levels (dysoxia) are critical in two paradigmatic organs, the heart and brain, under physiological and pathological conditions and the interactions of oxygen with other physiologically relevant gases, such as nitric oxide, can alternatively contribute to the worsening or protection of ischemic organs. Further, the effects of dysoxia are of pivotal importance for iron metabolism. Antioxid. Redox Signal. 37, 972-989.
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Affiliation(s)
- Daniele Mancardi
- Department of Clinical and Biological Sciences, University of Torino, Turin, Italy
| | - Sara Ottolenghi
- Department of Health Sciences, University of Milano, Milan, Italy
- School of Medicine and Surgery, University of Milano Bicocca, Milan, Italy
| | - Umberto Attanasio
- Cardio-Oncology Unit, Department of Translational Medical Sciences, Federico II University, Naples, Italy
| | - Carlo Gabriele Tocchetti
- Cardio-Oncology Unit, Department of Translational Medical Sciences, Federico II University, Naples, Italy
- Interdepartmental Center for Clinical and Translational Research (CIRCET), Federico II University, Naples, Italy
- Interdepartmental Hypertension Research Center (CIRIAPA), Federico II University, Naples, Italy
- Center for Basic and Clinical Immunology Research (CISI), Federico II University, Naples, Italy
| | - Rita Paroni
- Department of Health Sciences, University of Milano, Milan, Italy
| | - Pasquale Pagliaro
- Department of Clinical and Biological Sciences, University of Torino, Turin, Italy
| | - Michele Samaja
- Department of Health Sciences, University of Milano, Milan, Italy
- MAGI GROUP, San Felice del Benaco, Italy
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Pedersen SS, Holse C, Mathar CE, Chan MTV, Sessler DI, Liu Y, Zhang L, Kurz A, Jacka M, Torborg A, Biyase T, Montes FR, Wang CY, Pettit S, Devereaux PJ, Meyhoff CS. Intraoperative Inspiratory Oxygen Fraction and Myocardial Injury After Noncardiac Surgery: Results From an International Observational Study in Relation to Recent Controlled Trials. Anesth Analg 2022; 135:1021-1030. [PMID: 35417425 DOI: 10.1213/ane.0000000000006042] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Two trials reported that a high inspiratory oxygen fraction (F io2 ) does not promote myocardial infarction or death. Observational studies can provide larger statistical strength, but associations can be due to unobserved confounding. Therefore, we evaluated the association between intraoperative F io2 and cardiovascular complications in a large international cohort study to see if spurious associations were observed. METHODS We included patients from the Vascular events In noncardiac Surgery patIents cOhort evaluatioN (VISION) study, who were ≥45 years of age, scheduled for overnight hospital admission, and had intraoperative F io2 recorded. The primary outcome was myocardial injury after noncardiac surgery (MINS), and secondary outcomes included mortality and pneumonia, all within 30 postoperative days. Data were analyzed with logistic regression, adjusted for many baseline cardiovascular risk factors, and illustrated in relation to findings from 2 recent controlled trials. RESULTS We included 6588 patients with mean age of 62 years of whom 49% had hypertension. The median intraoperative F io2 was 0.46 (5%-95% range, 0.32-0.94). There were 808 patients (12%) with MINS. Each 0.10 increase in median F io2 was associated with a confounder-adjusted increase in odds for MINS: odds ratio (OR), 1.17 (95% confidence interval [CI], 1.12-1.23; P < .0001). MINS occurred in contrast with similar frequencies and no significant difference in controlled trials (2240 patients, 194 events), in which patients were given 80% vs 30% oxygen. Mortality was 2.4% and was not significantly associated with a median F io2 (OR, 1.07; 95% CI, 0.97-1.19 per 0.10 increase; P = .18), and 2.9% of patients had pneumonia (OR, 1.05; 95% CI, 0.95-1.15 per 0.10 increase; P = .34). CONCLUSIONS We observed an association between intraoperative F io2 and risk of myocardial injury within 30 days after noncardiac surgery, which contrasts with recent controlled clinical trials. F io2 was not significantly associated with mortality or pneumonia. Unobserved confounding presumably contributed to the observed association between F io2 and myocardial injury that is not supported by trials.
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Affiliation(s)
- Sofie S Pedersen
- From the Department of Anaesthesia and Intensive Care, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - Cecilie Holse
- From the Department of Anaesthesia and Intensive Care, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - Clara E Mathar
- From the Department of Anaesthesia and Intensive Care, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
| | - Matthew T V Chan
- Department of Anaesthesia and Intensive Care, Prince of Wales Hospital, Hong Kong Special Administrative Region, China
| | - Daniel I Sessler
- Department of Outcomes Research, Cleveland Clinic, Cleveland, Ohio
| | - Yingzhi Liu
- Departments of Anesthesia and Intensive Care
| | - Lin Zhang
- Medicine and Therapeutics, The Chinese University of Hong Kong, Hong Kong Special Administrative Region, China
| | - Andrea Kurz
- Department of Outcomes Research, Cleveland Clinic, Cleveland, Ohio.,Department of General Anesthesiology, Cleveland Clinic, Cleveland, Ohio
| | - Mike Jacka
- Walter C. Mackenzie Health Sciences Centre, Edmonton, University of Alberta, Canada
| | - Alexandra Torborg
- Discipline of Anaesthesiology and Critical Care, Inkosi Albert Luthuli Central Hospital, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Congella, KwaZulu-Natal, South Africa
| | - Thuli Biyase
- Discipline of Anaesthesiology and Critical Care, Inkosi Albert Luthuli Central Hospital, Nelson R. Mandela School of Medicine, University of KwaZulu-Natal, Congella, KwaZulu-Natal, South Africa
| | | | - Chew Yin Wang
- Department of Anaesthesiology, University of Malaya, Kuala Lumpur, Malaysia
| | - Shirley Pettit
- Population Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - P J Devereaux
- Population Health Research Institute, McMaster University, Hamilton, Ontario, Canada
| | - Christian S Meyhoff
- From the Department of Anaesthesia and Intensive Care, Copenhagen University Hospital - Bispebjerg and Frederiksberg, Copenhagen, Denmark
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28
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Gomes ET, Carbogim FDC, Lins RS, Lins-Filho RLDM, Poveda VDB, Püschel VADA. Effectiveness of supplemental oxygenation to prevent surgical site infections: A systematic review with meta-analysis. Rev Lat Am Enfermagem 2022; 30:e3648. [PMID: 36228236 PMCID: PMC9545934 DOI: 10.1590/1518-8345.6106.3648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/06/2022] [Indexed: 11/07/2022] Open
Abstract
OBJECTIVE to assess the effectiveness of supplemental oxygenation with high FiO2 when compared to conventional FiO2 in the prevention of surgical site infection. METHOD an effectiveness systematic review with meta-analysis conducted in five international databases and portals. The research was guided by the following question: Which is the effectiveness of supplemental oxygenation with high FiO2 (greater than 80%) when compared to conventional FiO2 (from 30% to 35%) in the prevention of surgical site infections in adults? RESULTS fifteen randomized clinical trials were included. Although all the subgroups presented a general effect in favor of the intervention, colorectal surgeries had this relationship evidenced with statistical significance (I2=10%;X2=4.42; p=0.352). CONCLUSION inspired oxygen fractions greater than 80% during the perioperative period in colorectal surgeries have proved to be effective to prevent surgical site infections, reducing their incidence by up to 27% (p=0.006). It is suggested to conduct new studies in groups of patients subjected to surgeries from other specialties, such as cardiac and vascular. PROSPERO registration No.: 178,453.
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Affiliation(s)
- Eduardo Tavares Gomes
- Universidade de São Paulo, Escola de Enfermagem, São Paulo, SP,
Brazil., Universidade Federal de Pernambuco, Hospital das Clínicas, Recife,
PE, Brazil
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29
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Dmytriiev D, Nazarchuk O, Melnychenko M, Levchenko B. Optimization of the target strategy of perioperative infusion therapy based on monitoring data of central hemodynamics in order to prevent complications. Front Med (Lausanne) 2022; 9:935331. [PMID: 36262276 PMCID: PMC9573976 DOI: 10.3389/fmed.2022.935331] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 09/12/2022] [Indexed: 11/13/2022] Open
Abstract
Enhanced Recovery After Surgery (ERAS) protocols are increasingly used in the perioperative period around the world. The concept of goal-directed fluid therapy (GDT) is a key element of the ERAS protocols. Inadequate perioperative infusion therapy can lead to a number of complications, including the development of an infectious process, namely surgical site infections, pneumonia, urinary tract infections. Optimal infusion therapy is difficult to achieve with standard parameters (e.g., heart rate, blood pressure, central venous pressure), so there are various methods of monitoring central hemodynamics - from invasive, minimally invasive to non-invasive. The latter are increasingly used in clinical practice. The current evidence base shows that perioperative management, specifically the use of GDT guided by real-time, continuous hemodynamic monitoring, helps clinicians maintain a patient's optimal fluid balance. The manuscript presents the analytical data, which describe the benefits and basic principles of perioperative targeted infusion therapy based on central hemodynamic parameters to reduce the risk of complications.
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Affiliation(s)
- Dmytro Dmytriiev
- Department of Anesthesiology and Intensive Care, National Pirogov Memorial Medical University, Vinnytsya, Ukraine
| | - Oleksandr Nazarchuk
- Department of Microbiology, National Pirogov Memorial Medical University, Vinnytsya, Ukraine
| | - Mykola Melnychenko
- Department of Anesthesiology and Intensive Care, National Pirogov Memorial Medical University, Vinnytsya, Ukraine
| | - Bohdan Levchenko
- Department of Anesthesiology and Intensive Care, National Pirogov Memorial Medical University, Vinnytsya, Ukraine
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30
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Chadha R, Patel D, Bhangui P, Blasi A, Xia V, Parotto M, Wray C, Findlay J, Spiro M, Raptis DA. Optimal anesthetic conduct regarding immediate and short-term outcomes after liver transplantation - Systematic review of the literature and expert panel recommendations. Clin Transplant 2022; 36:e14613. [PMID: 35147248 DOI: 10.1111/ctr.14613] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Accepted: 02/06/2022] [Indexed: 02/04/2023]
Abstract
BACKGROUND In the era of enhanced recovery after surgery, there is significant discussion regarding the impact of intraoperative anesthetic management on short-term outcomes following liver transplantation (LT), with no clear consensus in the literature. OBJECTIVES To identify whether or not intraoperative anesthetic management affects short-term outcomes after liver transplantation. DATA SOURCES Ovid MEDLINE, Embase, Scopus, Google Scholar, and Cochrane Central. METHODS A systematic review following PRISMA guidelines was undertaken. The systematic review was registered on PROSPERO (CRD42021239758). An international expert panel made recommendations for clinical practice using the GRADE approach. RESULTS After screening, 14 studies were eligible for inclusion in this systematic review. Six were prospective randomized clinical trials, three were prospective nonrandomized clinical trials, and five were retrospective studies. These manuscripts were reviewed to look at five questions regarding anesthetic care and its impact on short term outcomes following liver transplant. After review of the literature, the quality of evidence according to the following outcomes was as follows: intraoperative and postoperative morbidity and mortality (low), early allograft dysfunction (low), and hospital and ICU length of stay (moderate). CONCLUSIONS For optimal short term outcomes after liver transplantation, the panel recommends the use of volatile anesthetics in preference to total intravenous anesthesia (TIVA) (Level of Evidence: Very low; Strength of Recommendation: Weak) and minimum alveolar concentration (MAC) versus bispectral index (BIS) for depth of anesthesia monitoring (Level of Evidence: Very low; Strength of Recommendation: Weak). Regarding ventilation and oxygenation, the panel recommends a restrictive oxygenation strategy targeting a PaO2 of 70-120 mmHg (10-14 kPa), a tidal volume of 6-8 ml/kg ideal body weight (IBW), administration of positive end expiratory pressure (PEEP) tailored to patient intraoperative physiology, and recruitment maneuvers. (Level of evidence: Very low; Strength of Recommendation: Strong). Finally, the panel recommends the routine use of antiemetic prophylaxis. (Level of evidence: low; Strength of Recommendation: Strong).
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Affiliation(s)
- Ryan Chadha
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, USA
| | - Dhupal Patel
- Department of Anesthesia and Intensive Care Medicine, Addenbrooke's Hospital, Cambridge, UK
| | - Pooja Bhangui
- Department of Anesthesiology, Medanta Liver Institute, Gurgaon, India
| | - Annabel Blasi
- Department of Anesthesiology, Hospital Clinic Barcelona, Institut d'Insvestigacio Biomèdica Pi I Suner (IDIBAPS), Spain
| | - Victor Xia
- Department of Anesthesiology, University of California, Los Angeles, USA
| | - Matteo Parotto
- Department of Anesthesiology and Interdepartmental Division of Critical Care Medicine, Toronto General Hospital, University of Toronto, Canada
| | - Christopher Wray
- Department of Anesthesiology, University of California, Los Angeles, USA
| | - James Findlay
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, USA
| | - Michael Spiro
- Department of Anesthesia and Intensive Care Medicine, Royal Free Hospital, London, UK.,Division of Surgery & Interventional Science, University College London, UK
| | - Dimitri Aristotle Raptis
- Clinical Service of HPB Surgery and Liver Transplantation, Royal Free Hospital, London, UK.,Division of Surgery & Interventional Science, University College London, UK
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31
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Edmiston CE, Leaper DJ. Prevention of Orthopedic Prosthetic Infections Using Evidence-Based Surgical Site Infection Care Bundles: A Narrative Review. Surg Infect (Larchmt) 2022; 23:645-655. [PMID: 35925775 DOI: 10.1089/sur.2022.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Background: The number of primary/revision total joint replacements (TJR) are expected to increase substantially with an aging population and increasing prevalence of comorbid conditions. The 30-day re-admission rate, in all orthopedic specialties, is 5.4% (range, 4.8%-6.0%). A recent publication has documented that the surgical site infection (SSI) infection rate associated with revision total knee (rTKR, 15.6%) and revision total hip (rTHR, 8.6%) arthroplasties are four to seven times the rate of the primary procedures (2.1%-2.2%). These orthopedic infections prolong hospital stays, double re-admissions, and increase healthcare costs by a factor of 300%. Methods: A search of PubMed/MEDLINE, EMBASE and the Cochrane Library publications, which reported the infection risk after TKR and THR, was undertaken (January 1, 1995 to December 31, 2021). The search also included documentation of evidence-based practices that lead to improved post-operative outcomes. Results: The evidence-based approach to reducing the risk of SSI was grouped into pre-operative, peri-operative, and post-operative periods. Surgical care bundles have existed within other surgical disciplines for more than 20 years, although their use is relatively new in peri-operative orthopedic surgical care. Pre-admission chlorhexidine gluconate (CHG) showers/cleansing, staphylococcal decolonization, maintenance of normothermia, wound irrigation, antimicrobial suture wound closure, and post-operative wound care has been shown to improve clinical outcome in randomized controlled studies and meta-analyses. Conclusions: Evidence-based infection prevention care bundles have improved clinical outcomes in all surgical disciplines. The significant post-operative morbidity, mortality, and healthcare cost, associated with SSIs after TJR can be reduced by introduction of evidence-based pre-operative, intra-operative, and post-operative interventions.
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Affiliation(s)
- Charles E Edmiston
- Division of Vascular Surgery, Department of Surgery, Medical College of Wisconsin, Milwaukee, Wisconsin USA
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32
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Holst JM, Klitholm MP, Henriksen J, Vallentin MF, Jessen MK, Bolther M, Holmberg MJ, Høybye M, Lind PC, Granfeldt A, Andersen LW. Intraoperative Respiratory and Hemodynamic Strategies for Reducing Nausea, Vomiting, and Pain after Surgery: Systematic Review and Meta-Analysis. Acta Anaesthesiol Scand 2022; 66:1051-1060. [PMID: 35924389 PMCID: PMC9545575 DOI: 10.1111/aas.14127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 07/08/2022] [Accepted: 07/21/2022] [Indexed: 11/29/2022]
Abstract
BACKGROUND Despite improved medical treatment strategies, post-operative pain, nausea, and vomiting remain major challenges. This systematic review investigated the relationship between perioperative respiratory and hemodynamic interventions and postoperative pain, nausea, and vomiting. METHODS PubMed and Embase were searched on March 8, 2021 for randomized clinical trials investigating the effect of perioperative respiratory or hemodynamic interventions in adults undergoing non-cardiac surgery. Investigators reviewed trials for relevance, extracted data, and assessed risk of bias. Meta-analyses were performed when feasible. GRADE was used to assess the certainty in the evidence. RESULTS This review included 65 original trials; of these 48% had pain, nausea and/or vomiting as the primary focus. No reduction of postoperative pain was found in meta-analyses when comparing recruitment maneuvers with no recruitment, high (80%) to low (30%) fraction of oxygen, low (5-7 ml/kg) to high (9-12 ml/kg) tidal volume, or goal-directed hemodynamic therapy to standard care. In the meta-analysis comparing recruitment maneuvers with no recruitment maneuvers, patients undergoing laparoscopic gynecological surgery had less shoulder pain 24 hours postoperatively (mean difference in the numeric rating scale from 0 to 10: -1.1, 95% CI: -1.7, -0.5). In meta-analyses, comparing high to low fraction of inspired oxygen and goal-directed hemodynamic therapy to standard care in patients undergoing abdominal surgery, the risk of postoperative nausea and vomiting was reduced (odds ratio: 0.45, 95% CI: 0.24, 0.87 and 0.48, 95% CI: 0.27, 0.85). The certainty in the evidence was mostly very low to low. The results should be considered exploratory given the lack of pre-specified hypotheses and corresponding risk of Type 1 errors. CONCLUSION There is limited evidence regarding the impact of intraoperative respiratory and hemodynamic interventions on postoperative pain or nausea and vomiting. More definitive trials are needed to guide clinical care within this area. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Johanne M Holst
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark
| | - Maibritt P Klitholm
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark
| | - Jeppe Henriksen
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark
| | - Mikael F Vallentin
- Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.,Prehospital Emergency Medical Services, Central Denmark Region, Aarhus, Denmark
| | - Marie K Jessen
- Research Center for Emergency Medicine, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Maria Bolther
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark
| | - Mathias J Holmberg
- Research Center for Emergency Medicine, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.,Department of Anesthesiology and Intensive Care, Randers Regional Hospital, Randers, Denmark
| | - Maria Høybye
- Research Center for Emergency Medicine, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Peter Carøe Lind
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Asger Granfeldt
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark
| | - Lars W Andersen
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Aarhus, Denmark.,Research Center for Emergency Medicine, Aarhus University Hospital, Aarhus, Denmark.,Department of Clinical Medicine, Aarhus University, Aarhus, Denmark.,Prehospital Emergency Medical Services, Central Denmark Region, Aarhus, Denmark
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33
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Effect of Supplemental Perioperative Oxygen on SSI Among Adults with Lower-Extremity Fractures at Increased Risk for Infection: A Randomized Clinical Trial. J Bone Joint Surg Am 2022; 104:1236-1243. [PMID: 35775284 DOI: 10.2106/jbjs.21.01317] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Supplemental perioperative oxygen is a low-cost intervention theorized to reduce the risk of surgical site infections, but its effect among patients undergoing surgery for a tibial plateau, tibial pilon, or calcaneal fracture is unknown. We aimed to determine the effectiveness of a high fraction of inspired oxygen (FiO 2 , 80%) versus low FiO 2 (30%) in reducing surgical site infections in these patients. METHODS A randomized controlled trial was conducted at 29 U.S. trauma centers. We enrolled 1,231 patients who were 18 to 80 years of age and had a tibial plateau, tibial pilon, or calcaneal fracture and were thought to be at elevated risk for infection based on their injury characteristics. Patients were randomized to receive 80% FiO 2 (treatment group) or 30% FiO 2 (control group) in the operating room and for up to 2 hours in the recovery room. The primary outcome was a composite of either deep surgical site infection (treated with surgery) or superficial surgical site infection (treated with antibiotics alone) within 182 days following definitive fixation. Secondary outcomes included these surgical site infections at 90 and 365 days after surgery. RESULTS The modified intention-to-treat analysis included 1,136 patients with 94% of expected follow-up through 182 days. Surgical site infection occurred in 40 (7.0%) of the patients in the treatment group and 60 (10.7%) of the patients in the control group (relative risk [RR], 0.65; 95% confidence interval [CI], 0.45 to 0.96; risk difference [RD], -3.8%; 95% CI, -7.2% to -0.4%; p = 0.03). The treatment intervention demonstrated a similar effect at 90 days (RR, 0.59; 95% CI, 0.37 to 0.93) and 365 days (RR, 0.62; 95% CI, 0.44 to 0.87). Secondary analyses demonstrated that the effect was driven by a reduction in superficial surgical site infections. CONCLUSIONS Among tibial plateau, pilon, or calcaneal fracture patients at elevated risk for surgical site infection, a high perioperative FiO 2 lowered the risk of surgical site infection. The findings support the use of this intervention, although the benefit appears to mostly be in reduction of superficial infections. LEVEL OF EVIDENCE Therapeutic Level I . See Instructions for Authors for a complete description of levels of evidence.
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34
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Høybye M, Lind PC, Holmberg MJ, Bolther M, Jessen MK, Vallentin MF, Hansen FB, Holst JM, Magnussen A, Hansen NS, Johannsen CM, Enevoldsen J, Jensen TH, Roessler LL, Klitholm MP, Eggertsen MA, Caap P, Boye C, Dabrowski KM, Vormfenne L, Henriksen J, Karlsson CM, Balleby IR, Rasmussen MS, Paelestik K, Granfeldt A, Andersen LW. Fraction of Inspired Oxygen During General Anesthesia for Non-Cardiac Surgery: Systematic Review and Meta-Analysis. Acta Anaesthesiol Scand 2022; 66:923-933. [PMID: 35675085 PMCID: PMC9543529 DOI: 10.1111/aas.14102] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 05/19/2022] [Accepted: 05/28/2022] [Indexed: 12/02/2022]
Abstract
Background Controversy exists regarding the effects of a high versus a low intraoperative fraction of inspired oxygen (FiO2) in adults undergoing general anesthesia. This systematic review and meta‐analysis investigated the effect of a high versus a low FiO2 on postoperative outcomes. Methods PubMed and Embase were searched on March 22, 2022 for randomized clinical trials investigating the effect of different FiO2 levels in adults undergoing general anesthesia for non‐cardiac surgery. Two investigators independently reviewed studies for relevance, extracted data, and assessed risk of bias. Meta‐analyses were performed for relevant outcomes, and potential effect measure modification was assessed in subgroup analyses and meta‐regression. The evidence certainty was evaluated using GRADE. Results This review included 25 original trials investigating the effect of a high (mostly 80%) versus a low (mostly 30%) FiO2. Risk of bias was intermediate for all trials. A high FiO2 did not result in a significant reduction in surgical site infections (OR: 0.91, 95% CI 0.81–1.02 [p = .10]). No effect was found for all other included outcomes, including mortality (OR = 1.27, 95% CI: 0.90–1.79 [p = .18]) and hospital length of stay (mean difference = 0.03 days, 95% CI −0.25 to 0.30 [p = .84). Results from subgroup analyses and meta‐regression did not identify any clear effect modifiers across outcomes. The certainty of evidence (GRADE) was rated as low for most outcomes. Conclusions In adults undergoing general anesthesia for non‐cardiac surgery, a high FiO2 did not improve outcomes including surgical site infections, length of stay, or mortality. However, the certainty of the evidence was assessed as low.
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Affiliation(s)
- Maria Høybye
- Research Center for Emergency Medicine, Aarhus University Hospital, Denmark.,Department of Clinical Medicine, Aarhus University, Denmark
| | - Peter Carøe Lind
- Department of Surgical Gastroenterology, Aalborg University Hospital, Denmark
| | - Mathias J Holmberg
- Research Center for Emergency Medicine, Aarhus University Hospital, Denmark.,Department of Clinical Medicine, Aarhus University, Denmark.,Department of Cardiology, Viborg Regional Hospital, Viborg, Denmark
| | - Maria Bolther
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Denmark
| | - Marie K Jessen
- Research Center for Emergency Medicine, Aarhus University Hospital, Denmark.,Department of Clinical Medicine, Aarhus University, Denmark
| | - Mikael F Vallentin
- Department of Clinical Medicine, Aarhus University, Denmark.,Prehospital Emergency Medical Services, Central Denmark Region, Aarhus, Denmark
| | | | - Johanne M Holst
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Denmark
| | | | - Niklas S Hansen
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Denmark
| | | | | | - Thomas H Jensen
- Department of Internal Medicine, University Hospital of North Norway, Narvik, Norway
| | - Lara L Roessler
- Department of Emergency Medicine, Department of Clinical Research, University of Southern Denmark, Odense, Denmark
| | - Maibritt P Klitholm
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Denmark
| | | | - Philip Caap
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Denmark
| | - Caroline Boye
- Department of Clinical Medicine, Aarhus University, Denmark
| | - Karol M Dabrowski
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Denmark
| | | | - Jeppe Henriksen
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Denmark
| | - C M Karlsson
- Department of Anesthesiology and Intensive Care, Aalborg University Hospital, Denmark
| | - Ida R Balleby
- National Hospital of the Faroe Islands, Torshavn, Faroe Islands
| | - Marie S Rasmussen
- Department of Anesthesiology and Intensive Care, Aalborg University Hospital, Denmark
| | - Kim Paelestik
- Department of Anesthesiology and Intensive Care, Viborg Regional Hospital, Viborg, Denmark
| | - Asger Granfeldt
- Department of Clinical Medicine, Aarhus University, Denmark.,Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Denmark
| | - Lars W Andersen
- Research Center for Emergency Medicine, Aarhus University Hospital, Denmark.,Department of Clinical Medicine, Aarhus University, Denmark.,Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Denmark.,Prehospital Emergency Medical Services, Central Denmark Region, Aarhus, Denmark
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35
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Early Titration of Oxygen During Mechanical Ventilation Reduces Hyperoxemia in a Pilot, Feasibility, Randomized Control Trial for Automated Titration of Oxygen Levels. Crit Care Explor 2022; 4:e0704. [PMID: 35702350 PMCID: PMC9187203 DOI: 10.1097/cce.0000000000000704] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
Abstract
Timely regulation of oxygen (Fio2) is essential to prevent hyperoxemia or episodic hypoxemia. Exposure to excessive Fio2 is often noted early after onset of mechanical ventilation. In this pilot study, we examined the feasibility, safety, and efficacy of a clinical trial to prioritize Fio2 titration with electronic alerts to respiratory therapists.
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36
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Seyni-Boureima R, Zhang Z, Antoine MMLK, Antoine-Frank CD. A review on the anesthetic management of obese patients undergoing surgery. BMC Anesthesiol 2022; 22:98. [PMID: 35382771 PMCID: PMC8985303 DOI: 10.1186/s12871-022-01579-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Accepted: 01/27/2022] [Indexed: 12/01/2022] Open
Abstract
There has been an observed increase in theprevalence of obesity over the past few decades. The prevalence of anesthesiology related complications is also observed more frequently in obese patients as compared to patients that are not obese. Due to the increased complications that accompany obesity, obese patients are now more often requiring surgical interventions. Therefore, it is important that anesthesiologists be aware of this development and is equipped to manage these patients effectively and appropriately. As a result, this review highlights the effective management of obese patients undergoing surgery focusing on the preoperative, perioperative and postoperative care of these patients.
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Affiliation(s)
- Rimanatou Seyni-Boureima
- Department of Anaesthesiology, Zhongnan Hospital, Wuhan University, East Lake Road, 430071, Wuhan, Hubei, China
| | - Zongze Zhang
- Department of Anaesthesiology, Zhongnan Hospital, Wuhan University, East Lake Road, 430071, Wuhan, Hubei, China.
| | - Malyn M L K Antoine
- Department of Endocrinology, Zhongnan Hospital, Wuhan University, East Lake Road, 430071, Wuhan, Hubei, China
| | - Chrystal D Antoine-Frank
- Department of Anatomical Sciences, St. George's University, True Blue,Grand Anse, West Indies, St. George, Grenada
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Perioperative Supplemental Oxygen and Plasma Catecholamine Concentrations after Major Abdominal Surgery-Secondary Analysis of a Randomized Clinical Trial. J Clin Med 2022; 11:jcm11071767. [PMID: 35407374 PMCID: PMC9000182 DOI: 10.3390/jcm11071767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Revised: 03/15/2022] [Accepted: 03/21/2022] [Indexed: 11/30/2022] Open
Abstract
Perioperative stress is associated with increased sympathetic activity that leads to increases in heart rate and blood pressure, which are associated with the development of perioperative myocardial ischemia. In healthy volunteers, it was shown that the administration of supplemental oxygen attenuated sympathetic nerve activity and subsequently led to lower plasma catecholamine concentrations. We therefore tested the hypothesis that perioperative supplemental oxygen attenuates sympathetic nerve in patients at risk for cardiovascular complications undergoing major abdominal surgery. We randomly assigned 81 patients to receive either 80% or 30% inspired oxygen concentration throughout surgery and the first two postoperative hours. We assessed noradrenaline, adrenaline, and dopamine plasma concentrations before the induction of anesthesia, two hours after surgery and on the third postoperative day. There was no significant difference in postoperative noradrenaline (effect estimated: −41.5 ng·L−1, 95%CI −134.3, 51.2; p = 0.38), adrenaline (effect estimated: 11.2 ng·L−1, 95%CI −7.6, 30.1; p = 0.24), and dopamine (effect estimated: −1.61 ng·L−1, 95%CI −7.2, 3.9; p = 0.57) concentrations between both groups. Based on our results, it seems unlikely that supplemental oxygen influences endogenous catecholamine release in the perioperative setting.
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38
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Outcomes and Predictors of Severe Hyperoxemia in Patients Receiving Mechanical Ventilation: A Single-Center Cohort Study. Ann Am Thorac Soc 2022; 19:1338-1345. [PMID: 35157559 PMCID: PMC9353951 DOI: 10.1513/annalsats.202107-804oc] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
RATIONALE Supplemental oxygen is among the most commonly administered therapies in intensive care units. High supplemental oxygen exposure has been associated with harm in observational human studies and animal models. Yet no consensus exists regarding which dose and duration of high oxygen constitutes harmful hyperoxemia, and little is known regarding the clinical factors that predict potentially injurious exposure. OBJECTIVES To determine the level and duration of arterial oxygen (PaO2) associated with mortality among mechanically ventilated patients, and to identify the clinical factors that predict this exposure. METHODS We performed a retrospective cohort study of patients who received invasive mechanical ventilation at a single academic institution in 2017 and 2018. We used a generalized additive model to visualize the relationship between the measured PaO2 via arterial blood gases (ABGs) and 30-day mortality. We used multivariable logistic regression to identify patient- and hospital-level factors that predict exposure to harmful hyperoxemia. RESULTS We analyzed 2,133 patients with 33,310 ABGs obtained during mechanical ventilation. We identified a U-shaped relationship between PaO2 and mortality, where PaO2 was positively correlated with mortality above a threshold of 200 mmHg. 1,184 patients (55.5%) had at least one PaO2 level above this threshold. If patients spent an entire day exposed to PaO2 > 200 mmHg, they had 2.19 (95% CI 1.33 - 3.60, p = 0.002) greater odds of 30-day mortality in an adjusted analysis. Any exposure to severe hyperoxemia (PaO2 > 200 mmHg), was associated with mortality (OR 1.29, 95% CI 1.04 - 1.59, p = 0.021). The strongest clinical predictor of severe hyperoxemia exposure was the identity of the ICU in which mechanical ventilation was delivered. CONCLUSIONS Exposure to high arterial oxygen concentrations is common among mechanically ventilated patients, and the dose and duration of PaO2 ≥ 200 mmHg is associated with mortality. Severe hyperoxemia is highly variable across ICUs, and is far more common in clinical practice than in recent randomized trials of oxygen targeting strategies. Efforts to minimize this common and injurious exposure level are needed.
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Hyperoxia and Antioxidants for Myocardial Injury in Noncardiac Surgery: A 2 × 2 Factorial, Blinded, Randomized Clinical Trial. Anesthesiology 2022; 136:408-419. [PMID: 35120193 DOI: 10.1097/aln.0000000000004117] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BACKGROUND Hyperoxia and oxidative stress may be associated with increased risk of myocardial injury. The authors hypothesized that a perioperative inspiratory oxygen fraction of 0.80 versus 0.30 would increase the degree of myocardial injury within the first 3 days of surgery, and that an antioxidant intervention would reduce degree of myocardial injury versus placebo. METHODS A 2 × 2 factorial, randomized, blinded, multicenter trial enrolled patients older than 45 yr who had cardiovascular risk factors undergoing major noncardiac surgery. Factorial randomization allocated patients to one of two oxygen interventions from intubation and at 2 h after surgery, as well as antioxidant intervention or matching placebo. Antioxidants were 3 g IV vitamin C and 100 mg/kg N-acetylcysteine. The primary outcome was the degree of myocardial injury assessed by the area under the curve for high-sensitive troponin within the first 3 postoperative days. RESULTS The authors randomized 600 participants from April 2018 to January 2020 and analyzed 576 patients for the primary outcome. Baseline and intraoperative characteristics did not differ between groups. The primary outcome was 35 ng · day/l (19 to 58) in the 80% oxygen group; 35 ng · day/l (17 to 56) in the 30% oxygen group; 35 ng · day/l (19 to 54) in the antioxidants group; and 33 ng · day/l (18 to 57) in the placebo group. The median difference between oxygen groups was 1.5 ng · day/l (95% CI, -2.5 to 5.3; P = 0.202) and -0.5 ng · day/l (95% CI, -4.5 to 3.0; P = 0.228) between antioxidant groups. Mortality at 30 days occurred in 9 of 576 patients (1.6%; odds ratio, 2.01 [95% CI, 0.50 to 8.1]; P = 0.329 for the 80% vs. 30% oxygen groups; and odds ratio, 0.79 [95% CI, 0.214 to 2.99]; P = 0.732 for the antioxidants vs. placebo groups). CONCLUSIONS Perioperative interventions with high inspiratory oxygen fraction and antioxidants did not change the degree of myocardial injury within the first 3 days of surgery. This implies safety with 80% oxygen and no cardiovascular benefits of vitamin C and N-acetylcysteine in major noncardiac surgery. EDITOR’S PERSPECTIVE
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40
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Blaine KP. Recommendations for Mechanical Ventilation During General Anesthesia for Trauma Surgery. CURRENT ANESTHESIOLOGY REPORTS 2022. [DOI: 10.1007/s40140-021-00512-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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41
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Hu QL, Ko CY. Prevention of Perioperative Surgical Site Infection. Perioper Med (Lond) 2022. [DOI: 10.1016/b978-0-323-56724-4.00028-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
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42
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Gomes ET, Carbogim FDC, Lins RS, Lins-Filho RLDM, Poveda VDB, Püschel VADA. Efectividad de la oxigenación suplementaria para prevenir la infección del sitio quirúrgico: revisión sistemática con metaanálisis. Rev Lat Am Enfermagem 2022. [DOI: 10.1590/1518-8345.6106.3647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Resumen Objetivo: evaluar la efectividad de la oxigenación suplementaria con FiO2 elevada en comparación con la FiO2 convencional para prevenir la infección del sitio quirúrgico. Método: revisión sistemática de eficacia con metaanálisis en cinco bases de datos y portales internacionales. La investigación se guio por la pregunta: ¿Qué tan eficaz es la oxigenación suplementaria con FiO2 alta (más del 80%) en comparación con la FiO2 convencional (del 30 al 35%) para prevenir la infección del sitio quirúrgico en adultos? Resultados: se incluyeron quince ensayos clínicos aleatorizados. Aunque todos los subgrupos mostraron un efecto general a favor de la intervención, en las cirugías colorrectales esa relación tenía significancia estadística (I2=10%; X²=4,42; p=0,352). Conclusión: una fracción inspirada de oxígeno superior al 80% durante el perioperatorio en cirugías colorrectales ha demostrado ser eficaz en la prevención de la infección del sitio quirúrgico, reduciendo su incidencia hasta en un 27% (p=0,006). Se sugiere realizar más estudios en grupos de pacientes sometidos a cirugías en otras especialidades, como cardiaca y vascular. Registro PROSPERO: 178453.
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Lagier D, Zeng C, Fernandez-Bustamante A, Melo MFV. Perioperative Pulmonary Atelectasis: Part II. Clinical Implications. Anesthesiology 2022; 136:206-236. [PMID: 34710217 PMCID: PMC9885487 DOI: 10.1097/aln.0000000000004009] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The development of pulmonary atelectasis is common in the surgical patient. Pulmonary atelectasis can cause various degrees of gas exchange and respiratory mechanics impairment during and after surgery. In its most serious presentations, lung collapse could contribute to postoperative respiratory insufficiency, pneumonia, and worse overall clinical outcomes. A specific risk assessment is critical to allow clinicians to optimally choose the anesthetic technique, prepare appropriate monitoring, adapt the perioperative plan, and ensure the patient's safety. Bedside diagnosis and management have benefited from recent imaging advancements such as lung ultrasound and electrical impedance tomography, and monitoring such as esophageal manometry. Therapeutic management includes a broad range of interventions aimed at promoting lung recruitment. During general anesthesia, these strategies have consistently demonstrated their effectiveness in improving intraoperative oxygenation and respiratory compliance. Yet these same intraoperative strategies may fail to affect additional postoperative pulmonary outcomes. Specific attention to the postoperative period may be key for such outcome impact of lung expansion. Interventions such as noninvasive positive pressure ventilatory support may be beneficial in specific patients at high risk for pulmonary atelectasis (e.g., obese) or those with clinical presentations consistent with lung collapse (e.g., postoperative hypoxemia after abdominal and cardiothoracic surgeries). Preoperative interventions may open new opportunities to minimize perioperative lung collapse and prevent pulmonary complications. Knowledge of pathophysiologic mechanisms of atelectasis and their consequences in the healthy and diseased lung should provide the basis for current practice and help to stratify and match the intensity of selected interventions to clinical conditions.
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Affiliation(s)
- David Lagier
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Congli Zeng
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | | | - Marcos F. Vidal Melo
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
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Singer M, Young PJ, Laffey JG, Asfar P, Taccone FS, Skrifvars MB, Meyhoff CS, Radermacher P. Dangers of hyperoxia. Crit Care 2021; 25:440. [PMID: 34924022 PMCID: PMC8686263 DOI: 10.1186/s13054-021-03815-y] [Citation(s) in RCA: 91] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 11/04/2021] [Indexed: 01/27/2023] Open
Abstract
Oxygen (O2) toxicity remains a concern, particularly to the lung. This is mainly related to excessive production of reactive oxygen species (ROS). Supplemental O2, i.e. inspiratory O2 concentrations (FIO2) > 0.21 may cause hyperoxaemia (i.e. arterial (a) PO2 > 100 mmHg) and, subsequently, hyperoxia (increased tissue O2 concentration), thereby enhancing ROS formation. Here, we review the pathophysiology of O2 toxicity and the potential harms of supplemental O2 in various ICU conditions. The current evidence base suggests that PaO2 > 300 mmHg (40 kPa) should be avoided, but it remains uncertain whether there is an "optimal level" which may vary for given clinical conditions. Since even moderately supra-physiological PaO2 may be associated with deleterious side effects, it seems advisable at present to titrate O2 to maintain PaO2 within the normal range, avoiding both hypoxaemia and excess hyperoxaemia.
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Affiliation(s)
- Mervyn Singer
- Bloomsbury Institute of Intensive Care Medicine, Division of Medicine, University College London, London, UK
| | - Paul J Young
- Medical Research Institute of New Zealand, and Intensive Care Unit, Wellington Hospital, Wellington, Wellington, New Zealand
- Australian and New Zealand Intensive Care Research Centre, Department of Critical Care Medicine, University of Melbourne, Melbourne, VIC, Australia
| | - John G Laffey
- Department of Anaesthesia and Intensive Care Medicine, Galway University Hospitals, and School of Medicine, National University of Ireland, Galway, Ireland
| | - Pierre Asfar
- Département de Médecine Intensive - Réanimation Et Médecine Hyperbare, Centre Hospitalier Universitaire d'Angers, Angers, France
| | - Fabio Silvio Taccone
- Department of Intensive Care, Hôpital Erasme, Université Libre de Bruxelles, Bruxelles, Belgium
| | - Markus B Skrifvars
- Department of Emergency Care and Services, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Christian S Meyhoff
- Department of Anaesthesia and Intensive Care, Bispebjerg and Frederiksberg Hospital, University of Copenhagen, Copenhagen, Denmark
| | - Peter Radermacher
- Institut für Anästhesiologische Pathophysiologie und Verfahrensentwicklung, Universitätsklinikum, Helmholtzstrasse 8-1, 89081, Ulm, Germany.
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45
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Reiterer C, Fleischmann E, Taschner A, Adamowitsch N, von Sonnenburg MF, Graf A, Fraunschiel M, Starlinger P, Goschin J, Kabon B. Perioperative supplemental oxygen and oxidative stress in patients undergoing moderate- to high-risk major abdominal surgery - A subanalysis of randomized clinical trial. J Clin Anesth 2021; 77:110614. [PMID: 34856530 DOI: 10.1016/j.jclinane.2021.110614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2021] [Revised: 10/31/2021] [Accepted: 11/17/2021] [Indexed: 10/19/2022]
Abstract
STUDY OBJECTIVE Oxidative stress plays a pivotal role in the development and aggravation of cardiovascular diseases. The influence of intraoperative inspired oxygen concentrations on oxidative stress is still not entirely known. Therefore, we evaluated in this sub-study if supplemental oxygen affects the oxidation-reduction potential in patients at-risk for cardiovascular complications undergoing moderate- to high-risk major abdominal surgery. DESIGN Sub-study of a prospective parallel-arm double-blinded single-center superiority randomized trial. SETTING Operating room and postoperative recovery area. INTERVENTION Administration of 0.8 FiO2 versus 0.3 FiO2 throughout surgery and for the first two postoperative hours. MEASUREMENTS The primary outcome was the static oxidation-reduction potential (sORP) and the oxidation-reduction potential capacity (cORP) between both groups. The secondary outcome was the trend of sORP and cORP in the overall study population. We assessed sORP and cORP before induction of anesthesia, 2 h after induction of anesthesia, within 2 h after surgery and on the first and third postoperative day. MAIN RESULTS 258 patients were analyzed. 128 patients were randomly assigned to the 80% oxygen group and 130 patients were randomly assigned to the 30% oxygen group. Postoperative sORP values did not differ significantly between the 80% and 30% oxygen group (effect estimate: -1.162 mV,95% CI: -2.584 to 0.260; p = 0.109). On average, we observed a change in sORP of 5.288 mV (95% CI:4.633 to 5.913, p < 0.001) per day. cORP values did not differ significantly between the 80% and 30% oxygen group (effect estimate: -0.015μC, (95%CI: -0.062 to 0.032; p = 0.524). On average, we observed a change in cORP values of -0.170μC (95%CI: -0.194 to -0.147, p < 0.001) per day. CONCLUSION In contrast to previous reports, we could not find any evidence of an association between intraoperative supplemental oxygen and perioperative oxidative stress assessed by sORP and cORP. TRIAL REGISTRATION clinicaltrials.gov: NCT03366857https://clinicaltrials.gov/ct2/show/NCT03366857?term=vienna&cond=oxygen&draw=2&rank=1.
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Affiliation(s)
- Christian Reiterer
- Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, 1090 Vienna, Austria; Outcomes Research Consortium, Cleveland, OH, USA
| | - Edith Fleischmann
- Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, 1090 Vienna, Austria; Outcomes Research Consortium, Cleveland, OH, USA.
| | - Alexander Taschner
- Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, 1090 Vienna, Austria
| | - Nikolas Adamowitsch
- Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, 1090 Vienna, Austria
| | - Markus Falkner von Sonnenburg
- Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, 1090 Vienna, Austria
| | - Alexandra Graf
- Center for Medical Statistics, Informatics and Intelligent Systems, Medical University of Vienna, 1090 Vienna, Austria
| | - Melanie Fraunschiel
- IT Systems and Communications, Medical University of Vienna, 1090 Vienna, Austria
| | - Patrick Starlinger
- Department of Surgery, Medical University of Vienna, 1090 Vienna, Austria
| | - Julius Goschin
- Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, 1090 Vienna, Austria
| | - Barbara Kabon
- Department of Anaesthesia, Intensive Care Medicine and Pain Medicine, Medical University of Vienna, 1090 Vienna, Austria; Outcomes Research Consortium, Cleveland, OH, USA
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46
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Fuglestad MA, Tracey EL, Leinicke JA. Evidence-based Prevention of Surgical Site Infection. Surg Clin North Am 2021; 101:951-966. [PMID: 34774274 DOI: 10.1016/j.suc.2021.05.027] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Surgical site infection (SSI) remains an important complication of surgery. SSI is estimated to affect 2% to 5% of all surgical patients. Local and national efforts have resulted in significant improvements in the incidence of SSI. Familiarity with evidence surrounding high-quality SSI-reduction strategies is desirable. There exists strong evidence for mechanical and oral antibiotic bowel preparation in colorectal surgery, smoking cessation before elective surgery, prophylactic antibiotics, chlorhexidine-based skin antisepsis, and maintenance of normothermia throughout the perioperative period to reduce SSI. Use of other practices should be determined by the operating surgeon and/or local hospital policy.
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Affiliation(s)
- Matthew A Fuglestad
- Department of Surgery, University of Nebraska Medical Center, 983280 Nebraska Medical Center, Omaha, NE 68198-3280, USA
| | - Elisabeth L Tracey
- Department of Surgery, University of Nebraska Medical Center, 983280 Nebraska Medical Center, Omaha, NE 68198-3280, USA
| | - Jennifer A Leinicke
- Department of Surgery, University of Nebraska Medical Center, 983280 Nebraska Medical Center, Omaha, NE 68198-3280, USA.
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Busani S, Sarti M, Serra F, Gelmini R, Venturelli S, Munari E, Girardis M. Revisited Hyperoxia Pathophysiology in the Perioperative Setting: A Narrative Review. Front Med (Lausanne) 2021; 8:689450. [PMID: 34746165 PMCID: PMC8569225 DOI: 10.3389/fmed.2021.689450] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Accepted: 09/22/2021] [Indexed: 01/05/2023] Open
Abstract
The widespread use of high-dose oxygen, to avoid perioperative hypoxemia along with WHO-recommended intraoperative hyperoxia to reduce surgical site infections, is an established clinical practice. However, growing pathophysiological evidence has demonstrated that hyperoxia exerts deleterious effects on many organs, mainly mediated by reactive oxygen species. The purpose of this narrative review was to present the pathophysiology of perioperative hyperoxia on surgical wound healing, on systemic macro and microcirculation, on the lungs, heart, brain, kidneys, gut, coagulation, and infections. We reported here that a high systemic oxygen supply could induce oxidative stress with inflammation, vasoconstriction, impaired microcirculation, activation of hemostasis, acute and chronic lung injury, coronary blood flow disturbances, cerebral ischemia, surgical anastomosis impairment, gut dysbiosis, and altered antibiotics susceptibility. Clinical studies have provided rather conflicting results on the definitions and outcomes of hyperoxic patients, often not speculating on the biological basis of their results, while this review highlighted what happens when supranormal PaO2 values are reached in the surgical setting. Based on the assumptions analyzed in this study, we may suggest that the maintenance of PaO2 within physiological ranges, avoiding unnecessary oxygen administration, may be the basis for good clinical practice.
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Affiliation(s)
- Stefano Busani
- Cattedra e Servizio di Anestesia e Rianimazione, Azienda Universitaria Policlinico di Modena, Modena, Italy
| | - Marco Sarti
- Cattedra e Servizio di Anestesia e Rianimazione, Azienda Universitaria Policlinico di Modena, Modena, Italy
| | - Francesco Serra
- Chirurgia Generale d'Urgenza e Oncologica, Azienda Universitaria Policlinico di Modena, Modena, Italy
| | - Roberta Gelmini
- Chirurgia Generale d'Urgenza e Oncologica, Azienda Universitaria Policlinico di Modena, Modena, Italy
| | - Sophie Venturelli
- Cattedra e Servizio di Anestesia e Rianimazione, Azienda Universitaria Policlinico di Modena, Modena, Italy
| | - Elena Munari
- Chirurgia Generale d'Urgenza e Oncologica, Azienda Universitaria Policlinico di Modena, Modena, Italy
| | - Massimo Girardis
- Cattedra e Servizio di Anestesia e Rianimazione, Azienda Universitaria Policlinico di Modena, Modena, Italy
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48
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Leisy PJ, Barnes RD, Weavind LM. Are Surgical Site Infections an Anesthesiologist's Problem? Adv Anesth 2021; 39:1-15. [PMID: 34715969 DOI: 10.1016/j.aan.2021.07.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Philip J Leisy
- Department of Anesthesiology, Vanderbilt University Medical Center, 1211 21st Avenue South, 422 MAB, Nashville, TN 37212, USA.
| | - Robert D Barnes
- Department of Anesthesiology, Vanderbilt University Medical Center, 1211 21st Avenue South, 422 MAB, Nashville, TN 37212, USA
| | - Liza M Weavind
- Department of Anesthesiology, Vanderbilt University Medical Center, 1211 21st Avenue South, 422 MAB, Nashville, TN 37212, USA
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49
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Lim CH, Han JY, Cha SH, Kim YH, Yoo KY, Kim HJ. Effects of high versus low inspiratory oxygen fraction on postoperative clinical outcomes in patients undergoing surgery under general anesthesia: A systematic review and meta-analysis of randomized controlled trials. J Clin Anesth 2021; 75:110461. [PMID: 34521067 DOI: 10.1016/j.jclinane.2021.110461] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 07/07/2021] [Accepted: 07/11/2021] [Indexed: 02/07/2023]
Abstract
OBJECTIVES To determine whether high perioperative inspired oxygen fraction (FiO2) compared with low FiO2 has more deleterious postoperative clinical outcomes in patients undergoing non-thoracic surgery under general anesthesia. DESIGN Meta-analysis of randomized controlled trials. SETTING Operating room, postoperative recovery room and surgical ward. PATIENTS Surgical patients under general anesthesia. INTERVENTION High perioperative FiO2 (≥0.8) vs. low FiO2 (≤0.5). MEASUREMENTS The primary outcome was mortality within 30 days. Secondary outcomes were pulmonary outcomes (atelectasis, pneumonia, respiratory failure, postoperative pulmonary complications [PPCs], and postoperative oxygen parameters), intensive care unit (ICU) admissions, and length of hospital stay. A subgroup analysis was performed to explore the treatment effect by body mass index (BMI). MAIN RESULTS Twenty-six trials with a total 4991 patients were studied. The mortality in the high FiO2 group did not differ from that in the low FiO2 group (risk ratio [RR] 0.91, 95% confidence interval [CI] 0.42-1.97, P = 0.810). Nor were there any significant differences between the groups in such outcomes as pneumonia (RR 1.19, 95% CI 0.74-1.92, P = 0.470), respiratory failure (RR 1.29, 95% CI 0.82-2.04, P = 0.270), PPCs (RR 1.05, 95% CI 0.69-1.59, P = 0.830), ICU admission (RR 0.94, 95% CI 0.55-1.60, P = 0.810), and length of hospital stay (mean difference [MD] 0.27 d, 95% CI -0.28-0.81, P = 0.340). The high FiO2 was associated with postoperative atelectasis more often (risk ratio 1.27, 95% CI 1.00-1.62, P = 0.050), and lower postoperative arterial partial oxygen pressure (MD -5.03 mmHg, 95% CI -7.90- -2.16, P < 0.001). In subgroup analysis of BMI >30 kg/m2, these parameters were similarly affected between the groups. CONCLUSIONS The use of high FiO2 compared to low FiO2 did not affect the short-term mortality, although it may increase the incidence of atelectasis in adult, non-thoracic patients undergoing surgical procedures. Nor were there any significant differences in other secondary outcomes.
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Affiliation(s)
- Choon-Hak Lim
- Department of Anesthesiology and Pain Medicine, College of Medicine, Korea University, Seoul, South Korea
| | - Ju-Young Han
- College of Medicine, Korea University, Seoul, South Korea
| | - Seung-Ha Cha
- Department of Radiology, Korea University Anam Hospital, Korea University Medical Center, Seoul, South Korea
| | - Yun-Hee Kim
- Department of Anesthesiology and Pain Medicine, Hanyang University Hanmaeum Changwon Hospital, Changwon, South Korea
| | - Kyung-Yeon Yoo
- Department of Anesthesiology and Pain Medicine, Chonnam National University Medical School, Gwangju, South Korea
| | - Hyun-Jung Kim
- Department of Preventive Medicine, College of Medicine, Korea University, Seoul, South Korea.
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Fischer K, Ranjan R, Friess JO, Erdoes G, Mikasi J, Baumann R, Schoenhoff FS, Carrel TP, Brugger N, Eberle B, Guensch DP. Study design for a randomized crossover study investigating myocardial strain analysis in patients with coronary artery disease at hyperoxia and normoxemia prior to coronary artery bypass graft surgery (StrECHO-O 2). Contemp Clin Trials 2021; 110:106567. [PMID: 34517140 DOI: 10.1016/j.cct.2021.106567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Revised: 09/05/2021] [Accepted: 09/08/2021] [Indexed: 11/19/2022]
Abstract
BACKGROUND Supplemental oxygen (O2) is used routinely during anesthesia. In the treatment of acute myocardial infarction, it has been established that hyperoxia is to be avoided, whereas information on benefit and risk of hyperoxia in patients with stable coronary artery disease (CAD) remain scarce, especially in the setting of general anesthesia. This study will compare the immediate effects of normoxemia and hyperoxia on cardiac function, with a primary focus on changes in peak longitudinal left-ventricular strain, in anesthetized stable chronic CAD patients using peri-operative transesophageal echocardiography (TEE). METHODS A single-center randomized cross-over clinical trial will be conducted, enrolling 106 patients undergoing elective coronary artery bypass graft surgery. After the induction of anesthesia and prior to the start of surgery, cardiac function will be assessed by 2D and 3D TEE. Images will be acquired at two different oxygen states for each patient in randomized order. The fraction of inspired oxygen (FIO2) will be titrated to a normoxemic state (oxygen saturation of 95-98%) and adjusted to a hyperoxic state (FIO2 = 0.8). TEE images will be analyzed in a blinded manner for standard cardiac function and strain parameters. CONCLUSION By using myocardial strain assessed by TEE, early and subtle signs of biventricular systolic and diastolic dysfunction can be promptly measured intraoperatively prior to the onset of severe signs of ischemia. The results may help anesthesiologists to better understand the effects of FIO2 on cardiac function and potentially tailor oxygen therapy to patients with CAD undergoing general anesthesia.
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Affiliation(s)
- Kady Fischer
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Rajevan Ranjan
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Jan-Oliver Friess
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Gabor Erdoes
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Jan Mikasi
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Rico Baumann
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Florian S Schoenhoff
- Department of Cardiovascular Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Thierry P Carrel
- Department of Cardiovascular Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Nicolas Brugger
- Department of Cardiology, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Balthasar Eberle
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Dominik P Guensch
- Department of Anaesthesiology and Pain Medicine, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland.
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