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Habibi AF, Ashraf A, Ghanavi Z, Shakiba M, Nemati S, Aghsaghloo V. Positive End-Expiratory Pressure in Rhinoplasty Surgery; Risks and Benefits. Indian J Otolaryngol Head Neck Surg 2023; 75:2823-2828. [PMID: 37974774 PMCID: PMC10645805 DOI: 10.1007/s12070-023-03854-7] [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: 02/06/2023] [Accepted: 05/02/2023] [Indexed: 11/19/2023] Open
Abstract
Aims The aim of this study is to evaluate the effect of Positive End Expiratory Pressure (PEEP) on surgical field bleeding and its respiratory and hemodynamic consequences in rhinoplasty surgeries. Materials and methods This single-blind clinical trial performed in Amir Al-Momenin university Hospital in 2018. Seventy cases of rhinoplasty surgery patients Enrolled and were randomized into two groups; intervention (PEEP = 5) and comparison group (PEEP = 0). Surgical field bleeding and arterial oxygen saturation pulmonary dynamics and hemodynamic parameters were evaluated during operation and in post anesthesia care unit. Data were analyzed by SPSS software using descriptive and analytical statistics. Results PEEP applying had no negative effect on surgical bleeding as well as surgeon satisfaction, heart rate and blood pressure were similar in two groups. Pulmonary dynamics and oxygenation were stable and within normal values in all cases. The mean peak airway pressure was 17.87 ± 2.24 in the PEEP group and 16.08 ± 3.37 in the ZEEP group (P = 0.029). Conclusion applying low level PEEP during anesthesia improved recovery oxygen saturation but had no negative effects on the patient`s hemodynamics, and did not aggravate bleeding and visual clarity. Supplementary Information The online version contains supplementary material available at 10.1007/s12070-023-03854-7.
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Affiliation(s)
- Ali Faghih Habibi
- Otorhinolaryngology Research Center, Department of Otolaryngology and Head and Neck Surgery, School of Medicine, Amiralmomenin Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - Ali Ashraf
- Clinical Research Development Unit of Poursina Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - Zahra Ghanavi
- Department of Neurosurgery, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Shakiba
- Department of Biostatics & Epidemiology, School of Health, Guilan University of Medical Sciences, Rasht, Iran
| | - Shadman Nemati
- Otorhinolaryngology Research Center, Department of Otolaryngology and Head and Neck Surgery, School of Medicine, Amiralmomenin Hospital, Guilan University of Medical Sciences, Rasht, Iran
| | - Vahid Aghsaghloo
- Otorhinolaryngology Research Center, Department of Otolaryngology and Head and Neck Surgery, School of Medicine, Amiralmomenin Hospital, Guilan University of Medical Sciences, Rasht, Iran
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Nakamura M, Okamura Y, Sugiura T, Ashida R, Ohgi K, Yamada M, Otsuka S, Nakayama G, Kodera Y, Uesaka K. Impact of obstructive ventilatory impairment on intraoperative bleeding during laparoscopic hepatectomy. Langenbecks Arch Surg 2023; 408:122. [PMID: 36933022 DOI: 10.1007/s00423-023-02853-0] [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: 05/08/2022] [Accepted: 02/26/2023] [Indexed: 03/19/2023]
Abstract
PURPOSE An animal model of laparoscopic hepatectomy showed that bleeding from the hepatic vein is influenced by airway pressure. However, there are little research reports on how airway pressure leads to risks in clinical practice. The main objective of this study was to investigate the impact of preoperative forced expiratory volume % in 1 s (FEV1.0%) on intraoperative blood loss in laparoscopic hepatectomy. METHODS All patients who underwent pure laparoscopic or open hepatectomy from April 2011 to July 2020 were classified into two groups by preoperative spirometry: those with obstructive ventilatory impairment (obstructive group; FEV1.0% < 70%) and those with normal respiratory function (ormal group; FEV1.0% ≥ 70%). Massive blood loss was defined as 400 mL for laparoscopic hepatectomy. RESULTS In total, 247 and 445 patients underwent pure laparoscopic and open hepatectomy, respectively. Regarding laparoscopic hepatectomy group, blood loss was significantly greater in the obstructive group (122 vs. 100 mL, P = 0.042). Multivariate analysis revealed that high IWATE criteria which classify the surgical difficulty of laparoscopic hepatectomy (≥ 7, odds ratio (OR): 4.50, P = 0.004) and low preoperative FEV1.0% (< 70%, OR: 2.28, P = 0.043) were independent risk factors for blood loss during laparoscopic hepatectomy. In contrast, FEV1.0% did not affect the blood loss (522 vs. 605 mL, P = 0.113) during open hepatectomy. CONCLUSION Obstructive ventilatory impairment (low FEV1.0%) may affect the amount of bleeding during laparoscopic hepatectomy.
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Affiliation(s)
- Masanori Nakamura
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Sunto-Nagaizumi, Shizuoka, 4118777, Japan
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yukiyasu Okamura
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Sunto-Nagaizumi, Shizuoka, 4118777, Japan.
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan.
- Division of Digestive Surgery, Department of Surgery, Nihon University School of Medicine, Tokyo, Japan.
| | - Teiichi Sugiura
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Sunto-Nagaizumi, Shizuoka, 4118777, Japan
| | - Ryo Ashida
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Sunto-Nagaizumi, Shizuoka, 4118777, Japan
| | - Katsuhisa Ohgi
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Sunto-Nagaizumi, Shizuoka, 4118777, Japan
| | - Mihoko Yamada
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Sunto-Nagaizumi, Shizuoka, 4118777, Japan
| | - Shimpei Otsuka
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Sunto-Nagaizumi, Shizuoka, 4118777, Japan
| | - Goro Nakayama
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuhiro Kodera
- Department of Gastroenterological Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Katsuhiko Uesaka
- Division of Hepato-Biliary-Pancreatic Surgery, Shizuoka Cancer Center, 1007 Shimonagakubo, Sunto-Nagaizumi, Shizuoka, 4118777, Japan
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Wang Z, Wang B, Xia W, Wang P, Liang G, Mei JD, Zhang YG, Yan K. Recruitment manoeuvres during mechanical ventilation with sequential high-flow nasal oxygen after extubation to prevent postoperative pulmonary complications in patients undergone thoracic surgery: a protocol, prospective randomised controlled trial. BMJ Open 2022; 12:e056438. [PMID: 36307156 PMCID: PMC9621193 DOI: 10.1136/bmjopen-2021-056438] [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] [Indexed: 12/16/2022] Open
Abstract
INTRODUCTION The incidence of postoperative pulmonary complications (PPCs) following thoracic surgery is high, which increases the mortality rate, prolongs the length of hospital stay and increases medical costs. Some studies have confirmed that preoperative risk assessment, intraoperative anaesthesia methods and intraoperative mechanical ventilation strategies, including recruitment manoeuvres (RMs), can reduce the incidence of PPCs. Despite these improved strategies, the incidence of PPCs remains high. However, mechanical ventilation strategies have not been studied in the postoperative period. METHODS AND ANALYSIS We assume that RM during mechanical ventilation with sequential high-flow nasal oxygen therapy (HFNO) after extubation can maintain the opening of the postoperative alveoli and ultimately reduce the incidence of PPCs after thoracic surgery. We will include thoracic surgery patients and divide them into the RM with sequential HFNO group and the control group. They will be given RMs and sequential HFNO or be given conventional treatment. The sample size is 654 adult patients (327 per group) undergone thoracic surgery and presenting to the intensive care unit. ETHICS AND DISSEMINATION This study was approved by the Biomedical Research Ethics Committee of West China Hospital of Sichuan University (REC2019-730). It is expected that this study will lead to a randomised controlled trial. We assume that the findings will provide more evidence about PPCs and improve the management of patients undergone thoracic surgery. TRIAL REGISTRATION NUMBER ChiCTR2100046356.
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Affiliation(s)
- Zhen Wang
- Department of Respiratory Care, Sichuan University West China Hospital, Chengdu, Sichuan, China
| | - Bo Wang
- Department of Critical Care Medicine, Sichuan University West China Hospital, Chengdu, Sichuan, China
| | - Wenxi Xia
- Department of Respiratory Care, Sichuan University West China Hospital, Chengdu, Sichuan, China
| | - Peng Wang
- Department of Respiratory Care, Sichuan University, Chengdu, Sichuan, China
| | - Guopeng Liang
- Department of Critical Care Medicine, Sichuan University West China Hospital, Chengdu, Sichuan, China
- Sichuan Provincial Clinical Research Center for Emergency and Critical Care Medicine, Sichuan University West China Hospital, Chengdu, Sichuan, China
| | - Jian Dong Mei
- Department of Thoracic Surgery, Sichuan University, Chengdu, Sichuan, China
| | - Yong-Gang Zhang
- Department of Periodical Press and National Clinical Research Center for Geriatrics, West China Hospital, Chengdu, Sichuan, China
| | - Kang Yan
- Department of Critical Care Medicine, Sichuan University West China Medical Center, Chengdu, Sichuan, China
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Høyer S, Mose FH, Ekeløf P, Jensen JB, Bech JN. Hemodynamic, renal and hormonal effects of lung protective ventilation during robot-assisted radical prostatectomy, analysis of secondary outcomes from a randomized controlled trial. BMC Anesthesiol 2021; 21:200. [PMID: 34348666 PMCID: PMC8340542 DOI: 10.1186/s12871-021-01401-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2021] [Accepted: 06/17/2021] [Indexed: 11/30/2022] Open
Abstract
Background Lung protective ventilation with low tidal volume (TV) and increased positive end-expiratory pressure (PEEP) can have unfavorable effects on the cardiovascular system. We aimed to investigate whether lung protective ventilation has adverse impact on hemodynamic, renal and hormonal variables. Methods In this randomized, single-blinded, placebo-controlled study, 24 patients scheduled for robot-assisted radical prostatectomy were included. Patients were equally randomized to receive either ventilation with a TV of 6 ml/IBW and PEEP of 10 cm H2O (LTV-h.PEEP) or ventilation with a TV of 10 ml/IBW and PEEP of 4 cm H2O (HTV-l.PEEP). Before, during and after surgery, hemodynamic variables were measured, and blood and urine samples were collected. Blood samples were analyzed for plasma concentrations of electrolytes and vasoactive hormones. Urine samples were analyzed for excretions of electrolytes and markers of nephrotoxicity. Results Comparable variables were found among the two groups, except for significantly higher postoperative levels of plasma brain natriuretic peptide (p = 0.033), albumin excretion (p = 0.012) and excretion of epithelial sodium channel (p = 0.045) in the LTV-h.PEEP ventilation group compared to the HTV-l.PEEP ventilation group. In the combined cohort, we found a significant decrease in creatinine clearance (112.0 [83.4;126.7] ml/min at baseline vs. 45.1 [25.4;84.3] ml/min during surgery) and a significant increase in plasma concentrations of renin, angiotensin II, and aldosterone. Conclusion Lung protective ventilation was associated with minor adverse hemodynamic and renal effects postoperatively. All patients showed a substantial but transient reduction in renal function accompanied by activation of the renin-angiotensin-aldosterone system. Trial registration ClinicalTrials, NCT02551341. Registered 13 September 2015. Supplementary Information The online version contains supplementary material available at 10.1186/s12871-021-01401-x.
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Affiliation(s)
- Sidse Høyer
- University Clinic in Nephrology and Hypertension, Gødstrup Hospital and Aarhus University, 7400 Herning, Denmark.
| | - Frank H Mose
- University Clinic in Nephrology and Hypertension, Gødstrup Hospital and Aarhus University, 7400 Herning, Denmark
| | - Peter Ekeløf
- Department of Anesthesiology, Gødstrup Hospital, 7400 Herning, Denmark
| | - Jørgen B Jensen
- Department of Urology, Gødstrup Hospital, 7400 Herning, Denmark.,Department of Clinical Medicine, Aarhus University, 8200 Aarhus N, Denmark
| | - Jesper N Bech
- University Clinic in Nephrology and Hypertension, Gødstrup Hospital and Aarhus University, 7400 Herning, Denmark
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Gao X, Xiong Y, Huang J, Zhang N, Li J, Zheng S, Lu K, Ma D, Yang B, Ning J. The Effect of Mechanical Ventilation With Low Tidal Volume on Blood Loss During Laparoscopic Liver Resection: A Randomized Controlled Trial. Anesth Analg 2021; 132:1033-1041. [PMID: 33060490 DOI: 10.1213/ane.0000000000005242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND Control of bleeding during laparoscopic liver resection (LLR) is important for patient safety. It remains unknown what the effects of mechanical ventilation with varying tidal volumes on bleeding during LLR. Thus, this study aims to investigate whether mechanical ventilation with low tidal volume (LTV) reduces surgical bleeding during LLR. METHODS In this prospective, randomized, and controlled clinical study, 82 patients who underwent scheduled LLR were enrolled and randomly received either mechanical ventilation with LTV group (6-8 mL/kg) along with recruitment maneuver (once/30 min) without positive end-expiratory pressure (PEEP) or conventional tidal volume (CTV; 10-12 mL/kg) during parenchymal resection. The estimated volume of blood loss during parenchymal resection and the incidence of postoperative respiratory complications were compared between 2 groups. RESULT The estimated volume of blood loss (median [interquartile range {IQR}]) was decreased in the LTV group compared to the CTV group (301 [148, 402] vs 394 [244, 672] mL, P = .009); blood loss per cm2 of transected surface of liver (5.5 [4.1, 7.7] vs 12.2 [9.8, 14.4] mL/cm2, P < .001) and the risk of clinically significant estimated blood loss (>800 mL) were reduced in the LTV group compared to the CTV group (0/40 vs 8/40, P = .003). Blood transfusion was decreased in the LTV group compared to the CTV group (5% vs 20% of patients, P = .043). No patient in the LTV group but 2 patients in the CTV group were switched from LLR to open hepatectomy. Airway plateau pressure was lower in the LTV group compared to the CTV group (mean ± standard deviation [SD]) (12.7 ± 2.4 vs 17.5 ± 3.5 cm H2O, P = .002). CONCLUSIONS Mechanical ventilation with LTV may reduce bleeding during laparoscopic liver surgery.
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Affiliation(s)
- Xian Gao
- From the Department of Anesthesiology
| | - Ya Xiong
- From the Department of Anesthesiology
| | | | | | - Jianwei Li
- Department of Hepatology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Shuguo Zheng
- Department of Hepatology, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Kaizhi Lu
- From the Department of Anesthesiology
| | - Daqing Ma
- Division of Anaesthetics, Pain Medicine and Intensive Care, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, Chelsea and Westminster Hospital, London, United Kingdom
| | - Bin Yang
- Department of Anesthesiology, Chongqing University Cancer Hospital, Chongqing, China
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Halawa NM, Elshafie MA, Fernandez JG, Metwally AAR, Yassen KA. Respiratory and Hemodynamic Effects of Prophylactic Alveolar Recruitment During Liver Transplant: A Randomized Controlled Trial. EXP CLIN TRANSPLANT 2021; 19:462-472. [PMID: 33736584 DOI: 10.6002/ect.2020.0412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVES Prolonged surgical retraction may cause atelectasis. We aimed to recruit collapsed alveoli, stepwise, monitored by lung dynamic compliance and observe effects on arterial oxygenation and systemic and graft hemodynamics. Secondarily, we observed alveolar recruitment effects on postoperative mechanical ventilation, international normalized ratio, and pulmonary complications. MATERIALS AND METHODS For 58 recipients (1 excluded), randomized with optimal positive end-expiratory pressure (n = 28) versus control (fixed positive end-expiratory pressure, 5 cm H₂O; n = 29), alveolar recruitment was initiated (pressure-controlled ventilation guided by lung dynamic compliance) to identify optimal conditions. Ventilation shifted to volume-control mode with 0.4 fraction of inspired oxygen, 6 mL/kg tidal volume, and 1:2 inspiratory-to-expiratory ratio. Alveolar recruitment was repeated postretraction and at intensive care unit admission. Primary endpoints were changes in lung dynamic compliance, arterial oxygenation, and hemodynamics (cardiac output, invasive arterial and central venous pressures, graft portal and hepatic vein flows). Secondary endpoints were mechanical ventilation period and postoperative international normalized ratio, aspartate/alanine aminotransferases, lactate, and pulmonary complications. RESULTS Alveolar recruitment increased positive end-expiratory pressure, lung dynamic compliance, and arterial oxygenation (P < .01) and central venous pressure (P = .004), without effects on corrected flow time (P = .7). Cardiac output and invasive arterial pressure were stable with (P = .11) and without alveolar recruitment (P = .1), as were portal (P = .27) and hepatic vein flow (P = .30). Alveolar recruitment reduced postoperative pulmonary complications (n = 0/28 vs 8/29; P = .001), without reduction in postoperative mechanical ventilation period (P = .08). International normalization ratio, aspartate/alanine aminotransferases, and lactate were not different from control (P > .05). CONCLUSIONS Stepwise alveolar recruitment identified the optimal positive end-expiratory pressure to improve lung mechanics and oxygenation with minimal hemodynamic changes, without liver graft congestion/dysfunction, and was associated with significant reduction in postoperative pulmonary complications.
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Affiliation(s)
- Naglaa Moustafa Halawa
- From the Anesthesia Department, National Liver Institute, Menoufia University, Sheeben Elkom City, Egypt
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Jo YY, Lee KC, Chang YJ, Jung WS, Park J, Kwak HJ. Effects of an Alveolar Recruitment Maneuver During Lung Protective Ventilation on Postoperative Pulmonary Complications in Elderly Patients Undergoing Laparoscopy. Clin Interv Aging 2020; 15:1461-1469. [PMID: 32921992 PMCID: PMC7457882 DOI: 10.2147/cia.s264987] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Accepted: 08/07/2020] [Indexed: 10/26/2022] Open
Abstract
Purpose Controversy remains over whether alveolar recruitment maneuvers (ARMs) can reduce postoperative pulmonary complications. We hypothesized that performing an ARM in addition to lung protective ventilation (LPV) could improve intraoperative arterial oxygenation and postoperative pulmonary complications (PPCs) in elderly patients undergoing laparoscopy in the Trendelenburg position. Patients and Methods Sixty-two patients (aged 65-85) scheduled for laparoscopic low anterior resection were randomized to receive LPV only (LPV group, n = 32) or LPV with an ARM (ARM group, n = 30). LPV was set to a tidal volume of 6 mL/kg with a positive end expiratory pressure (PEEP) of 5 cmH2O. The ARM was performed by serially increasing the PEEP to 10 cmH2O for 3 breaths, 15 cmH2O for 3 breaths, then 20 cmH2O for 10 breaths, both immediately before and after abdominal insufflation. The primary end-point was the frequency of PPCs such as desaturation (SpO2 <90%), atelectasis, and pneumonia. Secondary end-points were changes in intraoperative respiratory and gas exchange parameters and hemodynamic variables. Results One patient in the LPV group experienced desaturation on the first postoperative day. The frequency of chest X-ray abnormalities such as atelectasis or pleural effusion was comparable between groups (6 (19%) and 5 (17%) patients, respectively, P = 0.676). Changes in other respiratory, gas exchange and hemodynamic parameters over time were not significantly different between the groups. However, vasopressor requirements during surgery were higher in the ARM than the LPV group (9 (30%) and 2 (6%) patients, respectively, P = 0.014). Conclusion This study suggests that performing an ARM during LPV may not improve postoperative respiratory outcomes and intraoperative oxygenation compared to LPV alone in geriatric patients undergoing laparoscopy in the Trendelenburg position. In addition, since the ARM could cause a significant deterioration in hemodynamic parameters, applying ARM to elderly patients should be carefully considered.
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Affiliation(s)
- Youn Yi Jo
- Department of Anesthesiology and Pain Medicine, Gachon University College of Medicine, Gil Hospital, Incheon, Republic of Korea
| | - Kyung Cheon Lee
- Department of Anesthesiology and Pain Medicine, Gachon University College of Medicine, Gil Hospital, Incheon, Republic of Korea
| | - Young Jin Chang
- Department of Anesthesiology and Pain Medicine, Gachon University College of Medicine, Gil Hospital, Incheon, Republic of Korea
| | - Wol Seon Jung
- Department of Anesthesiology and Pain Medicine, Gachon University College of Medicine, Gil Hospital, Incheon, Republic of Korea
| | - Jongchul Park
- Department of Anesthesiology and Pain Medicine, Gachon University College of Medicine, Gil Hospital, Incheon, Republic of Korea
| | - Hyun Jeong Kwak
- Department of Anesthesiology and Pain Medicine, Gachon University College of Medicine, Gil Hospital, Incheon, Republic of Korea
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Management of liver failure in general intensive care unit. Anaesth Crit Care Pain Med 2020; 39:143-161. [DOI: 10.1016/j.accpm.2019.06.014] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Accepted: 06/30/2019] [Indexed: 12/11/2022]
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Shah A, Palmer AJR, Klein AA. Strategies to minimize intraoperative blood loss during major surgery. Br J Surg 2020; 107:e26-e38. [DOI: 10.1002/bjs.11393] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Accepted: 09/12/2019] [Indexed: 12/19/2022]
Abstract
Abstract
Background
Reducing operative blood loss improves patient outcomes and reduces healthcare costs. The aim of this article was to review current surgical, anaesthetic and haemostatic intraoperative blood conservation strategies.
Methods
This narrative review was based on a literature search of relevant databases up to 31 July 2019 for publications relevant to reducing blood loss in the surgical patient.
Results
Interventions can begin early in the preoperative phase through identification of patients at high risk of bleeding. Directly acting anticoagulants can be stopped 48 h before most surgery in the presence of normal renal function. Aspirin can be continued for most procedures. Intraoperative cell salvage is recommended when anticipated blood loss is greater than 500 ml and this can be continued after surgery in certain situations. Tranexamic acid is safe, cheap and effective, and routine administration is recommended when anticipated blood loss is high. However, the optimal dose, timing and route of administration remain unclear. The use of topical agents, tourniquet and drains remains at the discretion of the surgeon. Anaesthetic techniques include correct patient positioning, avoidance of hypothermia and regional anaesthesia. Permissive hypotension may be beneficial in selected patients. Promising haemostatic strategies include use of pharmacological agents such as desmopressin, prothrombin complex concentrate and fibrinogen concentrate, and use of viscoelastic haemostatic assays.
Conclusion
Reducing perioperative blood loss requires a multimodal and multidisciplinary approach. Although high-quality evidence exists in certain areas, the overall evidence base for reducing intraoperative blood loss remains limited.
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Affiliation(s)
- A Shah
- Radcliffe Department of Medicine, University of Oxford, Oxford, UK
- Nuffield Department of Anaesthetics, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - A J R Palmer
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, University of Oxford, Oxford, UK
| | - A A Klein
- Department of Anaesthesia and Intensive Care, Royal Papworth Hospital, Cambridge, UK
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Guay J, Ochroch EA, Kopp S. Intraoperative use of low volume ventilation to decrease postoperative mortality, mechanical ventilation, lengths of stay and lung injury in adults without acute lung injury. Cochrane Database Syst Rev 2018; 7:CD011151. [PMID: 29985541 PMCID: PMC6513630 DOI: 10.1002/14651858.cd011151.pub3] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND Since the 2000s, there has been a trend towards decreasing tidal volumes for positive pressure ventilation during surgery. This an update of a review first published in 2015, trying to determine if lower tidal volumes are beneficial or harmful for patients. OBJECTIVES To assess the benefit of intraoperative use of low tidal volume ventilation (less than 10 mL/kg of predicted body weight) compared with high tidal volumes (10 mL/kg or greater) to decrease postoperative complications in adults without acute lung injury. SEARCH METHODS We searched the Cochrane Central Register of Controlled Trials (CENTRAL 2017, Issue 5), MEDLINE (OvidSP) (from 1946 to 19 May 2017), Embase (OvidSP) (from 1974 to 19 May 2017) and six trial registries. We screened the reference lists of all studies retained and of recent meta-analysis related to the topic during data extraction. We also screened conference proceedings of anaesthesiology societies, published in two major anaesthesiology journals. The search was rerun 3 January 2018. SELECTION CRITERIA We included all parallel randomized controlled trials (RCTs) that evaluated the effect of low tidal volumes (defined as less than 10 mL/kg) on any of our selected outcomes in adults undergoing any type of surgery. We did not retain studies with participants requiring one-lung ventilation. DATA COLLECTION AND ANALYSIS Two authors independently assessed the quality of the retained studies with the Cochrane 'Risk of bias' tool. We analysed data with both fixed-effect (I2 statistic less than 25%) or random-effects (I2 statistic greater than 25%) models based on the degree of heterogeneity. When there was an effect, we calculated a number needed to treat for an additional beneficial outcome (NNTB) using the odds ratio. When there was no effect, we calculated the optimum information size. MAIN RESULTS We included seven new RCTs (536 participants) in the update.In total, we included 19 studies in the review (776 participants in the low tidal volume group and 772 in the high volume group). There are four studies awaiting classification and three are ongoing. All included studies were at some risk of bias. Participants were scheduled for abdominal surgery, heart surgery, pulmonary thromboendarterectomy, spinal surgery and knee surgery. Low tidal volumes used in the studies varied from 6 mL/kg to 8.1 mL/kg while high tidal volumes varied from 10 mL/kg to 12 mL/kg.Based on 12 studies including 1207 participants, the effects of low volume ventilation on 0- to 30-day mortality were uncertain (risk ratio (RR) 0.80, 95% confidence interval (CI) 0.42 to 1.53; I2 = 0%; low-quality evidence). Based on seven studies including 778 participants, lower tidal volumes probably reduced postoperative pneumonia (RR 0.45, 95% CI 0.25 to 0.82; I2 = 0%; moderate-quality evidence; NNTB 24, 95% CI 16 to 160), and it probably reduced the need for non-invasive postoperative ventilatory support based on three studies including 506 participants (RR 0.31, 95% CI 0.15 to 0.64; moderate-quality evidence; NNTB 13, 95% CI 11 to 24). Based on 11 studies including 957 participants, low tidal volumes during surgery probably decreased the need for postoperative invasive ventilatory support (RR 0.33, 95% CI 0.14 to 0.77; I2 = 0%; NNTB 39, 95% CI 30 to 166; moderate-quality evidence). Based on five studies including 898 participants, there may be little or no difference in the intensive care unit length of stay (standardized mean difference (SMD) -0.06, 95% CI -0.22 to 0.10; I2 = 33%; low-quality evidence). Based on 14 studies including 1297 participants, low tidal volumes may have reduced hospital length of stay by about 0.8 days (SMD -0.15, 95% CI -0.29 to 0.00; I2 = 27%; low-quality evidence). Based on five studies including 708 participants, the effects of low volume ventilation on barotrauma (pneumothorax) were uncertain (RR 1.77, 95% CI 0.52 to 5.99; I2 = 0%; very low-quality evidence). AUTHORS' CONCLUSIONS We found moderate-quality evidence that low tidal volumes (defined as less than 10 mL/kg) decreases pneumonia and the need for postoperative ventilatory support (invasive and non-invasive). We found no difference in the risk of barotrauma (pneumothorax), but the number of participants included does not allow us to make definitive statement on this. The four studies in 'Studies awaiting classification' may alter the conclusions of the review once assessed.
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Affiliation(s)
- Joanne Guay
- University of SherbrookeDepartment of Anesthesiology, Faculty of MedicineSherbrookeQuebecCanada
- University of Quebec in Abitibi‐TemiscamingueTeaching and Research Unit, Health SciencesRouyn‐NorandaQCCanada
- Faculty of Medicine, Laval UniversityDepartment of Anesthesiology and Critical CareQuebec CityQCCanada
| | - Edward A Ochroch
- University of PennsylvaniaDepartment of Anesthesiology3400 Spruce StreetPhiladelphiaPAUSA19104
| | - Sandra Kopp
- Mayo Clinic College of MedicineDepartment of Anesthesiology and Perioperative Medicine200 1st St SWRochesterMNUSA55901
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Bernard D, Brandely A, Scatton O, Schoeffler P, Futier E, Lescot T, Beaussier M. Positive end-expiratory pressure does not decrease cardiac output during laparoscopic liver surgery: A prospective observational evaluation. HPB (Oxford) 2017; 19:36-41. [PMID: 27889250 DOI: 10.1016/j.hpb.2016.10.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/19/2016] [Revised: 09/25/2016] [Accepted: 10/19/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND Positive end-expiratory pressure (PEEP) has beneficial pulmonary effects but may worsen the hemodynamic repercussions induced by pneumoperitoneum (PNP) in patients undergoing laparoscopic liver resection. However, by increasing intraluminal vena cava (VC) pressures, PEEP may prevent PNP-induced VC collapse. The aim of this study was to test the validity of this hypothesis. METHODS After IRB approval and written informed consent, 20 patients were evaluated prospectively. Measurements were performed before and after the application of 10 cmH2O PEEP on patients without PNP (Control group) and during a 12 cmH20 PNP. Results are provided as means [95%CI]. Comparison used paired-sample t test. RESULTS PEEP induced a decrease in CI in Control subgroup (2.3 [2.0-2.6] and 2.1 [1.8-2.4] l min-1 m-2 before and after PEEP. P < 0.05). In contrast, PEEP on a pre-established PNP did not significantly modify cardiac index (CI). Transmural pressure on the abdominal vena cava decreased with PNP but was partly reversed by the addition of PEEP. CONCLUSION The application of PEEP on a pre-established PNP during laparoscopic liver resection in normovolemic patients did not decrease CI. Analysis of transmural VC pressure variations confirms that the addition of PEEP may prevent the vena caval collapse induced by PNP.
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Affiliation(s)
- Denis Bernard
- Department of Anesthesiology and Critical Care Medicine, St-Antoine University Hospital, Paris, France
| | - Antoine Brandely
- Department of Anesthesiology and Critical Care Medicine, St-Antoine University Hospital, Paris, France
| | - Olivier Scatton
- Department of Hepatobiliary Surgery and Liver Transplantation, St-Antoine University Hospital, Paris, France
| | - Pierre Schoeffler
- Department of Anesthesiology and Critical Care Medicine, Estaing Hospital, University Teaching Hospital of Clermont-Ferrand, Clermont-Ferrand, France
| | - Emmanuel Futier
- Department of Anesthesiology and Critical Care Medicine, Estaing Hospital, University Teaching Hospital of Clermont-Ferrand, Clermont-Ferrand, France
| | - Thomas Lescot
- Department of Anesthesiology and Critical Care Medicine, St-Antoine University Hospital, Paris, France
| | - Marc Beaussier
- Department of Anesthesiology and Critical Care Medicine, St-Antoine University Hospital, Paris, France.
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