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Slingo JM, Slingo ME. The science of climate change and the effect of anaesthetic gas emissions: a reply. Anaesthesia 2024; 79:553-555. [PMID: 38426249 DOI: 10.1111/anae.16268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/05/2024] [Indexed: 03/02/2024]
Affiliation(s)
| | - M E Slingo
- University Hospital Southampton, Southampton, UK
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2
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Grant A. The science of climate change and the effect of anaesthetic gas emissions. Anaesthesia 2024; 79:552-553. [PMID: 38426250 DOI: 10.1111/anae.16253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/26/2024] [Indexed: 03/02/2024]
Affiliation(s)
- A Grant
- Royal Infirmary of Edinburgh, Edinburgh, UK
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3
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de Heer IJ, Raab HAC, Krul S, Karaöz-Bulut G, Stolker RJ, Weber F. Electroencephalographic density spectral array monitoring during propofol/sevoflurane coadministration in children, an exploratory observational study. Anaesth Crit Care Pain Med 2024; 43:101342. [PMID: 38142866 DOI: 10.1016/j.accpm.2023.101342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 12/13/2023] [Accepted: 12/16/2023] [Indexed: 12/26/2023]
Abstract
INTRODUCTION Propofol and sevoflurane have a long history in pediatric anesthesia. Combining both drugs at low dose levels offers new opportunities. However, monitoring the hypnotic effects of this drug combination in children is challenging, because the currently available processed EEG-based systems are insufficiently validated in young children and the co-administration of anesthetics. This study investigated electroencephalographic density spectral array monitoring during propofol/sevoflurane coadministration with fixed sevoflurane- and variable propofol dosages. PATIENTS AND METHODS We analyzed the density spectral array pattern recorded during propofol/sevoflurane anesthesia in pediatric patients from birth to 11 years of age. Data from 78 patients were suitable for analysis. The primary outcome parameter of this study was the correlation between variable propofol dosages and the expression of the four electroencephalogram frequency bands β, α, θ, and δ. The main secondary outcome parameters were the intra-operative total EEG power and the prevalence of burst suppression. RESULTS In patients above the age of 1 year, a dose-dependent correlation between the propofol dosage and the relative percentage of β (-12.2%, p < 0.001) and δ (5.1%, p < 0.001) was found. There was an age-dependent trend toward increasing mean EEG power, with the most significant increase in the first year of life. In 14.1% of our patients, at least one episode of burst suppression occurred. CONCLUSION DSA-guided augmentation of propofol anesthesia with sevoflurane provides sufficient depth of anesthesia at doses usually considered sub-anesthetic in children, leading to less anesthetic drug exposure for the individual child.
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Affiliation(s)
- Iris J de Heer
- Department of Pediatric Anesthesiology, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, The Netherlands.
| | - Hannah A C Raab
- Department of Pediatric Anesthesiology, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Stephan Krul
- Department of Pediatric Anesthesiology, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Gulhan Karaöz-Bulut
- Department of Pediatric Anesthesiology, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Robert-Jan Stolker
- Department of Pediatric Anesthesiology, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, The Netherlands
| | - Frank Weber
- Department of Pediatric Anesthesiology, Sophia Children's Hospital, Erasmus University Medical Centre, Rotterdam, The Netherlands
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Kaufmann T, Slingerland RJ, Edens MA, Olthof CG. Glucose measurements with accu check inform II versus hexokinase plasma method during surgery under general anesthesia, an observational cohort study. J Clin Monit Comput 2024; 38:479-485. [PMID: 37688674 DOI: 10.1007/s10877-023-01072-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Accepted: 08/25/2023] [Indexed: 09/11/2023]
Abstract
PURPOSE Limited research exists on translation of in-vitro glucose measurement interfering compounds to the in-vivo situation. We investigated whether Point-of-Care glucose measurements by Accu Chek Inform II (ACI II) were accurate to monitor glucose concentrations during surgery with general anesthesia by comparing with the reference laboratory hexokinase plasma glucose test. METHOD Patients undergoing surgery with general anesthesia were included. Anesthesia was maintained with either Sevoflurane or Total intravenous anesthesia (TIVA). Prior to and after induction, blood glucose was measured with ACI II and the hexokinase test. Bland-Altman analysis was performed to assess method agreement. Subgroup analyses on glucose measurement differences per type of maintenance anesthesia were performed. RESULTS Thirty-nine patients were included, and 78 measurements were performed. All paired measurements had clinically acceptable agreement with a percentage error of 10.0% (95% CI 8.0 to 11.9). The mean difference (95% limits of agreement) between ACI II and hexokinase for all measurements was 0.0 mmol/L (-0.7 to 0.7 mmol/L). Before induction (n = 39), mean difference was -0.1 mmol/L (-0.6 to 0.4 mmol/L), and after induction (n = 39), mean difference was 0.1 mmol/L (-0.8 to 0.9 mmol/L). Further investigation showed the difference varied per test for patients receiving Sevoflurane compared to patients receiving TIVA (-0.2 ± 0.4 mmol/L vs. 0.4 ± 0.3 mmol/L, p < 0.001). Before and after induction, the difference between ACI II and hexokinase measurements increased for patients receiving Sevoflurane compared to patients receiving TIVA (0.4 ± 0.4 mmol/L vs. -0.4 ± 0.3 mmol/L, p < 0.001). CONCLUSION The agreement between glucose measurements using ACI II and the reference laboratory hexokinase test was clinically acceptable with a percentage error of 10.0% (95% CI 8.0 to 11.9). The use of TIVA may negatively affect the measurement performance of the ACI II.
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Affiliation(s)
- Thomas Kaufmann
- Department of Anesthesiology, Isala, Zwolle, The Netherlands
- Department of Anesthesiology, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | | | - Mireille A Edens
- Department of Innovation and Science, Isala, Zwolle, the Netherlands
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Joyce L, Wenninger A, Kreuzer M, García PS, Schneider G, Fenzl T. Electroencephalographic monitoring of anesthesia during surgical procedures in mice using a modified clinical monitoring system. J Clin Monit Comput 2024; 38:373-384. [PMID: 37462861 PMCID: PMC10995005 DOI: 10.1007/s10877-023-01052-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Accepted: 06/20/2023] [Indexed: 04/06/2024]
Abstract
Monitoring brain activity and associated physiology during the administration of general anesthesia (GA) in mice is pivotal to guarantee postanesthetic health. Clinically, electroencephalogram (EEG) monitoring is a well-established method to guide GA. There are no established methods available for monitoring EEG in mice (Mus musculus) during surgery. In this study, a minimally invasive rodent intraoperative EEG monitoring system was implemented using subdermal needle electrodes and a modified EEG-based commercial patient monitor. EEG recordings were acquired at three different isoflurane concentrations revealing that surgical concentrations of isoflurane anesthesia predominantly contained burst suppression patterns in mice. EEG suppression ratios and suppression durations showed strong positive correlations with the isoflurane concentrations. The electroencephalographic indices provided by the monitor did not support online monitoring of the anesthetic status. The online available suppression duration in the raw EEG signals during isoflurane anesthesia is a straight forward and reliable marker to assure safe, adequate and reproducible anesthesia protocols.
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Affiliation(s)
- Leesa Joyce
- Department of Anesthesiology & Intensive Care, School of Medicine, Technical University of Munich, Munich, Germany
| | - Alissa Wenninger
- Department of Anesthesiology & Intensive Care, School of Medicine, Technical University of Munich, Munich, Germany
| | - Matthias Kreuzer
- Department of Anesthesiology & Intensive Care, School of Medicine, Technical University of Munich, Munich, Germany
| | - Paul S García
- Department of Anesthesiology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Gerhard Schneider
- Department of Anesthesiology & Intensive Care, School of Medicine, Technical University of Munich, Munich, Germany
| | - Thomas Fenzl
- Department of Anesthesiology & Intensive Care, School of Medicine, Technical University of Munich, Munich, Germany.
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6
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Cao SJ, Wang DX. Delirium in older patients given propofol or sevoflurane anaesthesia for major cancer surgery. Response to Br J Anaesth 2023; 131: e185-6. Br J Anaesth 2024; 132:801. [PMID: 38238198 DOI: 10.1016/j.bja.2023.12.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/15/2023] [Accepted: 12/18/2023] [Indexed: 03/05/2024] Open
Affiliation(s)
- Shuang-Jie Cao
- Department of Anesthesiology, Peking University First Hospital, Beijing, China
| | - Dong-Xin Wang
- Department of Anesthesiology, Peking University First Hospital, Beijing, China; Outcomes Research Consortium, Cleveland, OH, USA.
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7
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Huang Y, Liao H, Li L, Xu J, Jiang P, Guo Y, Liu K. Minimal alveolar concentration of sevoflurane in combination with remimazolam in adults during laryngeal mask insertion: an up-down sequential allocation study. BMC Anesthesiol 2024; 24:94. [PMID: 38454342 PMCID: PMC10921704 DOI: 10.1186/s12871-024-02468-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2023] [Accepted: 02/24/2024] [Indexed: 03/09/2024] Open
Abstract
BACKGROUND Remimazolam is a novel ultrashort-acting intravenous benzodiazepine sedative-hypnotic. The combination of remimazolam and sevoflurane does not increase respiratory sensitivity, produce bronchospasm, or cause other adverse conditions. We aimed to observe the effects of different remimazolam doses on the minimum alveolar concentration (MAC) of sevoflurane at end-expiration during laryngeal mask insertion and evaluate the effect of sex on the efficacy of the combination of remimazolam on the suppression of laryngeal mask insertion in adult patients. METHODS We included 240 patients undergoing laparoscopic surgery under general anesthesia with elective placement of a laryngeal mask (120 males and 120 females). The patients were randomly divided into four groups according to sex: a control group (randomization for female patients, RF0; randomization for male patients, RM0) and three remimazolam groups (RF1, RM1 / RM2, RF2 / RM3, RF3), with 30 patients in each group. Induction was established by vital capacity rapid inhalation induction (VCRII), using 8% sevoflurane and 100% oxygen (6 L/min) in all patients. The (RF1, RM1), (RM2, RF2), and (RM3, RF3) groups were continuously injected with remimazolam at doses of 1, 1.5, and 2.0 mg/kg/h, respectively, while the (RM0, RF0) group was injected with an equal volume of normal saline. The end-expiratory concentration of sevoflurane was adjusted to a preset value after the patient's eyelash reflex disappeared. After the end-expiratory concentration of sevoflurane was kept stable for at least 15 min, the laryngeal mask was placed, and the patient's physical response to the mask placement was observed immediately and within 30 s of placement. The MAC of sevoflurane was measured using the up-and-down sequential method of Dixon. RESULTS The calculated MAC of end-expiratory sevoflurane during laryngeal mask insertion in adult females was (2.94 ± 0.18)%, (2.69 ± 0.16)%, (2.32 ± 0.16)% and (1.83 ± 0.15)% in groups RF0, RF1, RF2 and RF3; (2.98 ± 0.18)%, (2.80 ± 0.19)%, (2.54 ± 0.15)% and (2.15 ± 0.15)% in male groups RM0, RM1, RM2 and RM3, respectively. The MAC values were significantly lower in the (RF1-RF3, RM1-RM3) group when compared to the (RF0, RM0) group. There was no significant difference between (RF0, RF1) and (RM0, RM1), but the MAC value of the RF2-RF3 group was significantly lower than that of the RM2-RM3 group. CONCLUSIONS Remimazolam can effectively reduce end-expiratory sevoflurane MAC values during laryngeal mask placement in adults. When remimazolam was measured above 1.5 mg/kg/h, the effect of inhibiting laryngeal mask implantation in female patients was stronger than that in male patients. Remimazolam at a dose of 1-2 mg/kg/h combined with sevoflurane induction can be safely and effectively used in these patients.
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Affiliation(s)
- Yan Huang
- Department of Anesthesiology, The Second Clinical Medical College, North Sichuan Medical College, Nanchong Central Hospital, Nanchong, China
| | - HongYu Liao
- Department of Anesthesiology, The Second Clinical Medical College, North Sichuan Medical College, Nanchong Central Hospital, Nanchong, China
| | - LinJi Li
- Department of Anesthesiology, The Second Clinical Medical College, North Sichuan Medical College, Nanchong Central Hospital, Nanchong, China
| | - Juan Xu
- Department of Anesthesiology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
| | - PingPing Jiang
- Department of Anesthesiology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
| | - YanXia Guo
- Department of Anesthesiology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
| | - KunPeng Liu
- Department of Anesthesiology, Peking University International Hospital, Beijing, China.
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Bernat M, Boyer A, Roche M, Richard C, Bouvet L, Remacle A, Antonini F, Poirier M, Pastene B, Hammad E, Fond G, Bruder N, Leone M, Zieleskiewicz L. Reducing the carbon footprint of general anaesthesia: a comparison of total intravenous anaesthesia vs. a mixed anaesthetic strategy in 47,157 adult patients. Anaesthesia 2024; 79:309-317. [PMID: 38205529 DOI: 10.1111/anae.16221] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/14/2023] [Indexed: 01/12/2024]
Abstract
Global warming is a major public health concern. Volatile anaesthetics are greenhouse gases that increase the carbon footprint of healthcare. Modelling studies indicate that total intravenous anaesthesia is less carbon intensive than volatile anaesthesia, with equivalent quality of care. In this observational study, we aimed to apply the findings of previous modelling studies to compare the carbon footprint per general anaesthetic of an exclusive TIVA strategy vs. a mixed TIVA-volatile strategy. This comparative retrospective study was conducted over 2 years in two French hospitals, one using total intravenous anaesthesia only and one using a mixed strategy including both intravenous and inhalation anaesthetic techniques. Based on pharmacy procurement records, the quantity of anaesthetic sedative drugs was converted to carbon dioxide equivalents. The primary outcome was the difference in carbon footprint of hypnotic drugs per intervention between the two strategies. From 1 January 2021 to 31 December 2022, 25,137 patients received general anaesthesia in the hospital using the total intravenous anaesthesia strategy and 22,020 in the hospital using the mixed strategy. The carbon dioxide equivalent footprint of hypnotic drugs per intervention in the hospital using the total intravenous anaesthesia strategy was 20 times lower than in the hospital using the mixed strategy (emissions of 2.42 kg vs. 48.85 kg carbon dioxide equivalent per intervention, respectively). The total intravenous anaesthesia strategy significantly reduces the carbon footprint of hypnotic drugs in general anaesthesia in adult patients compared with a mixed strategy. Further research is warranted to assess the risk-benefit ratio of the widespread adoption of total intravenous anaesthesia.
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Affiliation(s)
- M Bernat
- Department of Anaesthesia and Intensive Care Medicine, Hôpital de la Conception, Assistance Publique des Hôpitaux de Marseille, Aix Marseille University, Marseille, France
| | - A Boyer
- Department of Anaesthesia and Intensive Care Medicine, Hôpital de la Conception, Assistance Publique des Hôpitaux de Marseille, Aix Marseille University, Marseille, France
| | - M Roche
- Pharmacy Department, Service Central des Opérations Pharmaceutiques, Hôpital de la Conception, Assistance Publique des Hôpitaux de Marseille, Aix Marseille University, Marseille, France
| | - C Richard
- Department of Anaesthesia and Intensive Care Medicine, Hôpital de la Conception, Assistance Publique des Hôpitaux de Marseille, Aix Marseille University, Marseille, France
| | - L Bouvet
- Department of Anesthesia and Critical Care, Hôpital Femme Mère Enfant, Hospices Civils de Lyon, Lyon, France
| | - A Remacle
- Departement of Medical Information, Hôpital Nord, Marseille, France
| | - F Antonini
- Department of Anaesthesia and Intensive Care Medicine, Hôpital de la Conception, Assistance Publique des Hôpitaux de Marseille, Aix Marseille University, Marseille, France
| | - M Poirier
- Department of Anaesthesia and Intensive Care Medicine, Hôpital de la Conception, Assistance Publique des Hôpitaux de Marseille, Aix Marseille University, Marseille, France
| | - B Pastene
- Department of Anaesthesia and Intensive Care Medicine, Hôpital de la Conception, Assistance Publique des Hôpitaux de Marseille, Aix Marseille University, Marseille, France
| | - E Hammad
- Department of Anaesthesia and Intensive Care Medicine, Hôpital de la Conception, Assistance Publique des Hôpitaux de Marseille, Aix Marseille University, Marseille, France
| | - G Fond
- CEReSS-Health Service Research and Quality of Life Center, Aix-Marseille University, Marseille, France
| | - N Bruder
- Department of Anaesthesia and Intensive Care Medicine, Hôpital de la Conception, Assistance Publique des Hôpitaux de Marseille, Aix Marseille University, Marseille, France
| | - M Leone
- Department of Anaesthesia and Intensive Care Medicine, Hôpital de la Conception, Assistance Publique des Hôpitaux de Marseille, Aix Marseille University, Marseille, France
| | - L Zieleskiewicz
- Department of Anaesthesia and Intensive Care Medicine, Hôpital de la Conception, Assistance Publique des Hôpitaux de Marseille, Aix Marseille University, Marseille, France
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Park EJ, Bae J, Kim J, Yoon JU, Do W, Yoon JP, Shon HS, Kang Y, Kim HY, Cho AR. Reducing the carbon footprint of operating rooms through education on the effects of inhalation anesthetics on global warming: A retrospective study. Medicine (Baltimore) 2024; 103:e37256. [PMID: 38428851 PMCID: PMC10906648 DOI: 10.1097/md.0000000000037256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Accepted: 01/23/2024] [Indexed: 03/03/2024] Open
Abstract
Environmental concerns, especially global warming, have prompted efforts to reduce greenhouse gas emissions. Healthcare systems, including anesthesia practices, contribute to these emissions. Inhalation anesthetics have a significant environmental impact, with desflurane being the most concerning because of its high global warming potential. This study aimed to educate anesthesiologists on the environmental impact of inhalation anesthetics and assess changes in awareness and practice patterns, specifically reducing desflurane use. This study included data from patients who underwent surgery under general anesthesia 1 month before and after education on the effects of inhalation anesthetics on global warming. The primary endpoint was a change in inhalational anesthetic use. Secondary endpoints included changes in carbon dioxide equivalent (CO2e) emissions, driving equivalent, and medical costs. After the education, desflurane use decreased by 50%, whereas sevoflurane use increased by 50%. This shift resulted in a reduction in the overall amount of inhalational anesthetics used. The total CO2e and driving-equivalent values decreased significantly. The cost per anesthesia case decreased, albeit to a lesser extent than expected. Education on the environmental impact of inhalation anesthetics has successfully altered anesthesiologists' practice patterns, leading to reduced desflurane usage. This change has resulted in decreased CO2e emissions and has had a positive effect on mitigating global warming. However, further research is required to assess the long-term impact of such education and the variability in practice patterns across different institutions.
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Affiliation(s)
- Eun Ji Park
- Department of Anesthesia and Pain Medicine, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Jaesang Bae
- Department of Anesthesia and Pain Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
| | - Jisu Kim
- Department of Anesthesia and Pain Medicine, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Ji-Uk Yoon
- Department of Anesthesia and Pain Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Wangseok Do
- Department of Anesthesia and Pain Medicine, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Jung-Pil Yoon
- Department of Anesthesia and Pain Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Hong-Sik Shon
- Department of Anesthesia and Pain Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Yerin Kang
- Department of Anesthesia and Pain Medicine, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
| | - Hee Young Kim
- Department of Anesthesia and Pain Medicine, Pusan National University Yangsan Hospital, Yangsan, Republic of Korea
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea
| | - Ah-Reum Cho
- Department of Anesthesia and Pain Medicine, Medical Research Institute, Pusan National University Hospital, Busan, Republic of Korea
- Department of Anesthesia and Pain Medicine, School of Medicine, Pusan National University, Yangsan, Republic of Korea
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Abstract
All sectors of society must reduce their carbon footprint to mitigate climate change, and the healthcare community is no exception. This narrative review focuses on the environmental concerns associated with the emissions of volatile anaesthetic agents, some of which are potent greenhouse gases. This review provides an understanding of the global warming potential metric, as well as the concepts of atmospheric lifetime and radiative efficiency. The state of knowledge of the environmental impact and possible climate forcing of emitted volatile anaesthetic agents are reviewed. Additionally, the review discusses how climate metrics can guide mitigation strategies to reduce emissions and suggests present and future options for mitigating the climate impact.
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Affiliation(s)
- O J Nielsen
- Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
| | - M P Sulbaek Andersen
- Copenhagen Center for Atmospheric Research, Department of Chemistry, University of Copenhagen, Copenhagen, Denmark
- Department of Chemistry and Biochemistry, California State University Northridge, Northridge, CA, USA
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11
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Abstract
The dedication of the international anaesthetic community to reducing the environmental impact of healthcare is important and to be celebrated. When this is underpinned by robust science, it has the potential to make a real difference. However, volatile anaesthetic agents have been widely promoted in the medical literature as damaging to the climate, leading to a drive to remove them from clinical practice. This is based on notional 'CO2 -equivalent' values created using the simple emission metric known as the global warming potential. Here, we assert that when proper consideration is given to the science of climate change, volatile anaesthetic gas emissions cannot be simply equated to real carbon dioxide emissions, and that their climate impact is vanishingly small. This paper gives anaesthetists a framework to make informed choices founded on climate science and calls for attention to be refocused on the urgent need to reduce the real carbon dioxide emissions associated with healthcare.
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Affiliation(s)
| | - M E Slingo
- Department of Anaesthesia, University Hospital Southampton, Southampton, UK
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12
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Halbwax M, Nindiwe Malata LL, Aschenborn OH, Lewis-Smith R, Lehmann D. First field use of isoflurane and an anaesthetic workstation to maintain anaesthesia of wild giant pangolins (Smutsia gigantea). Vet Anaesth Analg 2024; 51:190-192. [PMID: 38331672 DOI: 10.1016/j.vaa.2023.12.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 12/12/2023] [Accepted: 12/13/2023] [Indexed: 02/10/2024]
Affiliation(s)
- Michel Halbwax
- Agence Nationale des Parcs Nationaux, Libreville, Gabon.
| | | | - Ortwin Hk Aschenborn
- Department of Evolutionary Ecology, Leibniz Institute for Zoo and Wildlife Research, Berlin, Germany
| | - Ruth Lewis-Smith
- Scottish Universities Environmental Research Centre, University of Glasgow, Glasgow, UK
| | - David Lehmann
- Agence Nationale des Parcs Nationaux, Libreville, Gabon; Department of Biological and Environmental Sciences, University of Stirling, Stirling, UK
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13
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Kuo ETJ, Kuo C, Lin CL. Inhaled anesthesia associated with reduced mortality in patients with stage III breast cancer: A population-based study. PLoS One 2024; 19:e0289519. [PMID: 38427628 PMCID: PMC10906904 DOI: 10.1371/journal.pone.0289519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2023] [Accepted: 01/10/2024] [Indexed: 03/03/2024] Open
Abstract
BACKGROUND Patients diagnosed with stage III breast cancer often undergo surgery, radiation therapy, and chemotherapy as part of their treatment. The choice of anesthesia technique during surgery has been a subject of interest due to its potential association with immune changes and prognosis. In this study, we aimed to compare the mortality rates between stage III breast cancer patients undergoing surgery with propofol-based intravenous general anesthesia and those receiving inhaled anesthetics. METHODS Using data from Taiwan's National Health Insurance Research Database and Taiwan Cancer Registry, we identified a cohort of 10,896 stage III breast cancer patients. Among them, 1,506 received propofol-based intravenous anesthetic maintenance, while 9,390 received inhaled anesthetic maintenance. To ensure comparability between the two groups, we performed propensity-score matching. RESULTS Our findings revealed a significantly lower mortality rate in patients who received inhaled anesthetics compared to those who received propofol-based intravenous anesthesia. Sensitivity analysis further confirmed the robustness of our results. CONCLUSIONS This study suggests that inhaled anesthesia technique is associated with a lower mortality rate in clinical stage III breast cancer. Further research is needed to validate and expand upon these results.
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Affiliation(s)
- Emily Tzu-Jung Kuo
- Department of Anesthesiology, China Medical University Hospital, Taichung, Taiwan (R.O.C.)
- School of Medicine, Duke University, Durham, NC, United States of America
| | - Chin Kuo
- College of Artificial Intelligence, National Yang-Ming Chiao Tung University, Tainan, Taiwan (R.O.C.)
- School of Medicine, Duke University, Durham, NC, United States of America
| | - Cheng-Li Lin
- College of Medicine, China Medical University, Taichung, Taiwan (R.O.C.)
- Management Office for Health Data, China Medical University Hospital, Taichung, Taiwan (R.O.C)
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Dilger AE, Shelley J, Bergmark RW, Slutzman JE. Addressing Climate Health: A Practical Guide to Quantifying and Reducing Health Care-Associated Emissions. Otolaryngol Head Neck Surg 2024; 170:981-986. [PMID: 38044482 DOI: 10.1002/ohn.603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 10/31/2023] [Accepted: 11/11/2023] [Indexed: 12/05/2023]
Abstract
OBJECTIVE The objective was to quantify annual greenhouse gas emissions from a surgical specialty hospital and identify high-yield areas to reduce emissions associated with patient care. STUDY DESIGN Pre-post study, greenhouse gas inventory. SETTING Specialty hospital. METHODS A scope 1 and scope 2 greenhouse gas inventory of the Massachusetts Eye and Ear main campus for calendar years (CY) 2020, 2021, and 2022 was performed by assessing emissions attributable to on-site sources (scope 1) and purchased electricity and steam (scope 2). The associated carbon dioxide equivalent was then calculated using known global warming potentials and emission factors. RESULTS The major contributors to scope 1 and scope 2 emissions at our institution for CY 2020 to 2022 were waste anesthetic gases and purchased steam. These results were reviewed with hospital leadership and a plan was developed to reduce these emissions. Emission monitoring is ongoing to assess the efficacy of these interventions. CONCLUSION Measuring scope 1 and scope 2 emissions at the facility level allows health care facilities to develop institution-specific interventions and compare data across health care organizations. Surgeons can lead on health care system sustainability by collaborating with clinical and nonclinical staff to measure emissions, developing targeted emissions-reduction interventions, and tracking progress with yearly assessments.
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Affiliation(s)
- Amanda E Dilger
- Department of Otolaryngology-Head and Neck Surgery, Harvard Medical School, Boston, Massachusetts, USA
- Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear, Boston, Massachusetts, USA
- Center for Surgery and Public Health, Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Jekaterina Shelley
- Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear, Boston, Massachusetts, USA
| | - Regan W Bergmark
- Department of Otolaryngology-Head and Neck Surgery, Harvard Medical School, Boston, Massachusetts, USA
- Center for Surgery and Public Health, Department of Surgery, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Division of Otolaryngology-Head and Neck Surgery, Brigham and Women's Hospital and Dana Farber Cancer Institute, Boston, Massachusetts, USA
| | - Jonathan E Slutzman
- Center for the Environment and Health, Massachusetts General Hospital, Boston, Massachusetts, USA
- Department of Emergency Medicine, Massachusetts General Hospital, Boston, Massachusetts, USA
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Oliver C, Charlesworth M, Pratt O, Sutton R, Metodiev Y. Anaesthetic subspecialties and sustainable healthcare: a narrative review. Anaesthesia 2024; 79:301-308. [PMID: 38207014 DOI: 10.1111/anae.16169] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/03/2023] [Indexed: 01/13/2024]
Abstract
The principles of environmentally sustainable healthcare as applied to anaesthesia and peri-operative care are well documented. Associated recommendations focus on generic principles that can be applied to all areas of practice. These include reducing the use of inhalational anaesthetic agents and carbon dioxide equivalent emissions of modern peri-operative care. However, four areas of practice have specific patient, surgical and anaesthetic factors that present barriers to the implementation of some of these principles, namely: neuroanaesthesia; obstetric; paediatric; and cardiac anaesthesia. This narrative review describes these factors and synthesises the available evidence to highlight areas of sustainable practice clinicians can address today, as well as posing several unanswered questions for the future. In neuroanaesthesia, improvements can be made by undertaking awake surgery, moving towards more reusables and embracing telemedicine in quaternary services. Obstetric anaesthesia continues to present questions regarding how services can move away from nitrous oxide use or limit its release to the environment. The focus for paediatric anaesthesia is addressing the barriers to total intravenous and regional anaesthesia. For cardiac anaesthesia, a significant emphasis is determining how to focus the substantial resources required on those who will benefit from cardiac interventions, rather than universal implementation. Whilst the landscape of evidence-based sustainable practice is evolving, there remains an urgent need for further original evidence in healthcare sustainability targeting these four clinical areas.
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Affiliation(s)
- C Oliver
- Department of Anaesthesia, University Hospital of Wales, Cardiff, UK
| | - M Charlesworth
- Department of Cardiothoracic Anaesthesia, Critical Care and ECMO, Wythenshawe Hospital, Manchester, UK
| | - O Pratt
- Department of Anaesthesia, Salford Care Organisation, Northern Care Alliance NHS Foundation Trust, Salford, UK
| | - R Sutton
- Department of Anaesthesia, Royal Manchester Children's Hospital, Manchester, UK
| | - Y Metodiev
- Department of Anaesthesia, University Hospital of Wales, Cardiff, UK
- School of Medicine, Cardiff University, Cardiff, UK
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Gandhi J, Barker K, Cross S, Goddard A, Vaghela M, Cooper A. Volatile capture technology in sustainable anaesthetic practice: a narrative review. Anaesthesia 2024; 79:261-269. [PMID: 38205589 DOI: 10.1111/anae.16207] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/01/2023] [Indexed: 01/12/2024]
Abstract
Anaesthetic practice contributes to climate change. Volatile capture technology, typically based on adsorption to a carbon- or silica-based substrate, has the potential to mitigate some of the harmful effects of using halogenated hydrocarbons. Anaesthetists have a professional responsibility to use anaesthetic agents which offer the greatest safety and clinical benefit with the lowest financial cost and environmental impacts. Inhalational anaesthetics should be used at an appropriate concentration with a minimal fresh gas flow via a circle system to minimise unnecessary waste. Once practice efficiencies have been maximised, only then should technical solutions such as volatile capture be employed. In this narrative review, we focus on the available literature relating to volatile capture technology, obtained via a targeted literature search and through contacting manufacturers and researchers. We found six studies focusing on the Blue-Zone Technologies Deltasorb®, SageTech Medical SID and Baxter/ZeoSys CONTRAfluran™ volatile capture systems. Though laboratory analyses of available systems suggest that > 95% in vitro mass transfer is possible for all three systems, the in vivo results for capture efficiency vary from 25% to 73%. Currently, there is no financial incentive for healthcare organisations to capture waste anaesthetic gases, and so the value of volatile capture technology requires quantification. System-level organisations, such as Greener NHS, are best positioned to commission such evaluations and make policy decisions to guide investment. Further research using volatile capture technology in real-world settings is necessary and we highlight some priority research questions to improve our understanding of the utility of this group of technologies.
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Affiliation(s)
- J Gandhi
- Northern School of Anaesthesia, Newcastle, Upon Tyne, UK
| | - K Barker
- Department of Anaesthesia, Raigmore Hospital, Inverness, UK
| | - S Cross
- Department of Anaesthesia, St John's Hospital, Livingston, UK
| | - A Goddard
- Department of Anaesthesia, St John's Hospital, Livingston, UK
| | - M Vaghela
- Department of Anaesthesia, Guy's and St Thomas' NHS Foundation trust, London, UK
| | - A Cooper
- Department of Anaesthesia, Wirral University Teaching Hospital, UK
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Charlesworth M, Laycock H. Driving down the carbon cost of peri-operative care: old controversies, new topics, fresh perspectives and the future. Anaesthesia 2024; 79:223-225. [PMID: 38205582 DOI: 10.1111/anae.16217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/11/2023] [Indexed: 01/12/2024]
Affiliation(s)
- M Charlesworth
- Department of Cardiothoracic Anaesthesia, Critical Care and ECMO, Wythenshawe Hospital, Manchester, UK
| | - H Laycock
- Department of Anaesthesia, Great Ormond Street Hospital, London, UK
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18
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Affiliation(s)
- S R Moonesinghe
- University College London, London, UK
- Departments of Anaesthesia, Perioperative and Critical Care, University College London Hospitals, London, UK
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19
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Liu CC, Chen IW, Liu PH, Wu JY, Liu TH, Huang PY, Yu CH, Fu PH, Hung KC. Efficacy of propofol-based anesthesia against risk of brain swelling during craniotomy: A meta-analysis of randomized controlled studies. J Clin Anesth 2024; 92:111306. [PMID: 37883902 DOI: 10.1016/j.jclinane.2023.111306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 10/10/2023] [Accepted: 10/20/2023] [Indexed: 10/28/2023]
Abstract
STUDY OBJECTIVE This meta-analysis aimed to compare the risk of brain swelling during craniotomy between propofol-based and volatile-based anesthesia. DESIGN Meta-analysis of randomized controlled trials (RCTs). SETTING Operating room. INTERVENTION Propofol-based anesthesia. PATIENTS Adult patients undergoing craniotomy. MEASUREMENTS Databases, including EMBASE, MEDLINE, Google Scholar, and Cochrane Library, were searched from inception to April 2023. The primary outcome was the risk of brain swelling, while the secondary outcomes included the impact of anesthetic regimens on surgical and recovery outcomes, as well as the risk of hemodynamic instability. MAIN RESULTS Our meta-analysis of 17 RCTs showed a significantly lower risk of brain swelling (risk ratio [RR]: 0.85, p = 0.03, I2 = 21%, n = 1976) in patients receiving propofol than in those using volatile agents, without significant differences in surgical time or blood loss between the two groups. Moreover, propofol was associated with a lower intracranial pressure (ICP) (mean difference: -4.06 mmHg, p < 0.00001, I2 = 44%, n = 409) as well as a lower risk of tachycardia (RR = 0.54, p = 0.005, I2 = 0%, n = 822) and postoperative nausea/vomiting (PONV) (RR = 0.59, p = 0.002, I2 = 19%, n = 1382). There were no significant differences in other recovery outcomes (e.g., extubation time), risk of bradycardia, hypertension, or hypotension between the two groups. Subgroup analysis indicated that propofol was not associated with a reduced risk of brain swelling when compared to individual volatile agents. Stratified by craniotomy indications, propofol reduced brain swelling in elective craniotomy, but not in emergency craniotomy (e.g., traumatic brain injury), when compared to volatile anesthetics. CONCLUSIONS By reviewing the available evidence, our results demonstrate the beneficial effects of propofol on the risk of brain swelling, ICP, PONV, and intraoperative tachycardia. In emergency craniotomy for traumatic brain injury and subarachnoid hemorrhage, brain swelling showed no significant difference between propofol and volatile agents. Further large-scale studies are warranted for verification.
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Affiliation(s)
- Chien-Cheng Liu
- Department of Anesthesiology, E-Da Hospital, I-Shou University, Kaohsiung City, Taiwan; Department of Nursing, College of Medicine, I-Shou University, Kaohsiung City, Taiwan; School of Medicine, I-Shou University, Kaohsiung City, Taiwan
| | - I-Wen Chen
- Department of Anesthesiology, Chi Mei Medical Center, Liouying, Tainan City, Taiwan
| | - Ping-Hsin Liu
- Department of Anesthesiology, E-Da Dachang Hospital, I-Shou University, Kaohsiung City, Taiwan
| | - Jheng-Yan Wu
- Department of Nutrition, Chi Mei Medical Center, Tainan City, Taiwan
| | - Ting-Hui Liu
- Department of Psychiatry, Chi Mei Medical Center, Tainan City, Taiwan
| | - Po-Yu Huang
- Department of Internal Medicine, Chi Mei Medical Center, Tainan City, Taiwan
| | - Chia-Hung Yu
- Department of Anesthesiology, Chi Mei Medical Center, Tainan City, Taiwan
| | - Pei-Han Fu
- Department of Anesthesiology, Chi Mei Medical Center, Tainan City, Taiwan
| | - Kuo-Chuan Hung
- Department of Anesthesiology, Chi Mei Medical Center, Tainan City, Taiwan; School of Medicine, College of Medicine, National Sun Yat-sen University, Kaohsiung, Taiwan.
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20
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Dubernet M, Delagnes A, Hadhoum A, Hubert T, Lukowiak O, Moussa M. Using the Anesthetic Gas Filter CONTRAfluran While on Cardiopulmonary Bypass: Preliminary Study of the Feasibility, Security, and Efficiency. J Cardiothorac Vasc Anesth 2024; 38:586-588. [PMID: 38061918 DOI: 10.1053/j.jvca.2023.11.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 11/03/2023] [Indexed: 01/27/2024]
Affiliation(s)
- Martin Dubernet
- Department of Cardiovascular Anaesthesia and Intensive Care, CHU Lille, Lille France.
| | - Alexandre Delagnes
- Department of Cardiovascular Anaesthesia and Intensive Care, CHU Lille, Lille France
| | - Ahmed Hadhoum
- Department of Cardiovascular Anaesthesia and Intensive Care, CHU Lille, Lille France
| | - Thomas Hubert
- Department of Cardiovascular Anaesthesia and Intensive Care, CHU Lille, Lille France
| | - Oliver Lukowiak
- Department of Cardiovascular Anaesthesia and Intensive Care, CHU Lille, Lille France
| | - Mouhamed Moussa
- Department of Cardiovascular Anaesthesia and Intensive Care, CHU Lille, Lille France
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21
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Kagawa T, Kurahashi K, Seki T, Kawasaki Y, Nahara I, Takeda C, Yonekura H, Tanaka S, Kawakami K. The association between intraoperative anesthesia methods used during gastric cancer surgery and long-term mortality: A retrospective observational study using a Japanese claims database. J Anesth 2024; 38:92-97. [PMID: 38102529 DOI: 10.1007/s00540-023-03288-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Accepted: 11/14/2023] [Indexed: 12/17/2023]
Abstract
PURPOSE Various basic and clinical studies have investigated the association between the types of anesthetic agents and prognosis. However, the results have varied among studies and remain controversial. In the present study, we aimed to investigate whether the risk of all-cause mortality differs between inhaled or intravenous anesthetics in patients with gastric cancer undergoing gastrectomy. METHODS Using a Japanese nationwide insurance claims database, we analyzed patients who underwent gastrectomy under general anesthesia for gastric cancer between January 2005 and September 2019. Postoperative outcomes were compared between two groups: those who received inhaled anesthetics (Sevoflurane, Isoflurane, or Desflurane) and those who received intravenous anesthetics (propofol), using a multivariable Cox proportional hazards model. The primary outcome was overall survival. RESULTS Among 2671 eligible patients, 2105 were in the inhaled anesthetic group, and 566 were in the intravenous anesthetic group. The median (interquartile range) age was 58 (51-63) years, and 1979 (74.1%) were men. The median follow-up period was 795 days. We identified 56 (2.7%) and 16 (2.8%) deaths during the follow-up period in the inhaled and intravenous anesthetic use groups, respectively. There was no difference in postoperative overall survival between the two groups (hazard ratio, 0.97; 95% confidence interval, 0.56-1.70; P = 0.93). CONCLUSIONS We found no significant difference in the postoperative risks of overall survival between inhaled and intravenous anesthesia in patients with gastric cancer undergoing gastrectomy.
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Affiliation(s)
- Tomoko Kagawa
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
- National Hospital Organization Kinki-Chuo Chest Medical Center, Osaka, Japan
| | - Kiyoyasu Kurahashi
- Department of Anesthesiology and Intensive Care Medicine, School of Medicine, International University of Health and Welfare, Kozunomori 4-3, Narita City, Chiba, 286-8686, Japan.
| | - Tomotsugu Seki
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
- Department of Cardiovascular Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yohei Kawasaki
- Institute for Assistance of Academic and Education, Tokyo, Japan
| | - Isao Nahara
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - Chikashi Takeda
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
- Department of Anesthesia, Kyoto University Hospital, Kyoto, Japan
| | - Hiroshi Yonekura
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
| | - Shiro Tanaka
- Department of Clinical Biostatistics, Graduate School of Medicine, Kyoto University, Kyoto, Japan
| | - Koji Kawakami
- Department of Pharmacoepidemiology, Graduate School of Medicine and Public Health, Kyoto University, Kyoto, Japan
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22
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García-Montoto F, Paz-Martín D, Pestaña D, Soro M, Marcos Vidal JM, Badenes R, Suárez de la Rica A, Bardi T, Pérez-Carbonell A, García C, Cervantes JA, Martínez MP, Guerrero JL, Lorente JV, Veganzones J, Murcia M, Belda FJ. Guidelines for inhaled sedation in the ICU. Rev Esp Anestesiol Reanim (Engl Ed) 2024; 71:90-111. [PMID: 38309642 DOI: 10.1016/j.redare.2024.01.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 07/29/2023] [Indexed: 02/05/2024]
Abstract
INTRODUCTION AND OBJECTIVES Sedation is used in intensive care units (ICU) to improve comfort and tolerance during mechanical ventilation, invasive interventions, and nursing care. In recent years, the use of inhalation anaesthetics for this purpose has increased. Our objective was to obtain and summarise the best evidence on inhaled sedation in adult patients in the ICU, and use this to help physicians choose the most appropriate approach in terms of the impact of sedation on clinical outcomes and the risk-benefit of the chosen strategy. METHODOLOGY Given the overall lack of literature and scientific evidence on various aspects of inhaled sedation in the ICU, we decided to use a Delphi method to achieve consensus among a group of 17 expert panellists. The processes was conducted over a 12-month period between 2022 and 2023, and followed the recommendations of the CREDES guidelines. RESULTS The results of the Delphi survey form the basis of these 39 recommendations - 23 with a strong consensus and 15 with a weak consensus. CONCLUSION The use of inhaled sedation in the ICU is a reliable and appropriate option in a wide variety of clinical scenarios. However, there are numerous aspects of the technique that require further study.
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Affiliation(s)
- F García-Montoto
- UCI de Anestesia, Servicio de Anestesiología y Reanimación, Complejo Hospitalario Universitario de Cáceres, Cáceres, Spain.
| | - D Paz-Martín
- UCI, Departamento de Anestesia y Cuidados Intensivos, Clínica Universidad de Navarra, Pamplona, Navarra, Spain
| | - D Pestaña
- UCI de Anestesia, Servicio de Anestesiología y Reanimación, Hospital Universitario Ramon y Cajal, Madrid, Spain; Universidad de Alcalá de Henares, Alcalá de Henares, Madrid, Spain
| | - M Soro
- UCI, Servicio de Anestesiología y Cuidados Intensivos, Hospital IMED, Valencia, Spain
| | - J M Marcos Vidal
- Unidad de Reanimación, Servicio de Anestesiología y Reanimación, Complejo Asistencial Universitario de León, León, Spain
| | - R Badenes
- Departamento Cirugía, Facultad de Medicina, Universidad de Valencia, Valencia, Spain; UCI de Anestesia, Servicio de Anestesiología, Reanimación y Terapéutica del Dolor, Hospital Clínico Universitario de Valencia, Valencia, Spain; INCLIVA Instituto de Investigación Sanitaria, Valencia, Spain
| | - A Suárez de la Rica
- Unidad de Reanimación, Servicio de Anestesiología y Reanimación, Hospital Universitario de La Princesa, Madrid, Spain
| | - T Bardi
- UCI de Anestesia, Servicio de Anestesiología y Reanimación, Hospital Universitario Ramon y Cajal, Madrid, Spain
| | - A Pérez-Carbonell
- UCI Quirúrgica, Servicio de Anestesiología, UCI Quirúrgica y Unidad del Dolor, Hospital General Universitario de Elche, Elche, Alicante, Spain
| | - C García
- UCI Quirúrgica, Servicio de Anestesiología y Reanimación, Hospital General Universitario Dr. Balmis, Alicante, Spain
| | - J A Cervantes
- Unidad de Reanimación, Servicio de Anestesiología y Reanimación, Hospital Universitario Torrecárdenas, Almería, Spain
| | - M P Martínez
- Unidad de Reanimación, Servicio de Anestesiología y Reanimación, Hospital Clínico Universitario Virgen de la Arrixaca, Murcia, Spain
| | - J L Guerrero
- Unidad de Reanimación, Servicio de Anestesiología y Reanimación, Hospital Universitario Virgen de la Victoria, Málaga, Spain; Universidad de Málaga, Málaga, Spain; Instituto Biomédico de Málaga, Málaga, Spain
| | - J V Lorente
- Unidad de Reanimación, Servicio de Anestesiología y Reanimación, Hospital Juan Ramón Jiménez, Huelva, Spain
| | - J Veganzones
- Unidad de Reanimación, Servicio de Anestesiología y Reanimación, Hospital Universitario La Paz, Madrid, Spain
| | - M Murcia
- UCI, Servicio de Anestesiología y Cuidados Intensivos, Hospital IMED, Valencia, Spain
| | - F J Belda
- Departamento Cirugía, Facultad de Medicina, Universidad de Valencia, Valencia, Spain
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Zanner R, Berger S, Schröder N, Kreuzer M, Schneider G. Separation of responsive and unresponsive patients under clinical conditions: comparison of symbolic transfer entropy and permutation entropy. J Clin Monit Comput 2024; 38:187-196. [PMID: 37436600 PMCID: PMC10879366 DOI: 10.1007/s10877-023-01046-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 06/13/2023] [Indexed: 07/13/2023]
Abstract
Electroencephalogram (EEG)-based monitoring during general anesthesia may help prevent harmful effects of high or low doses of general anesthetics. There is currently no convincing evidence in this regard for the proprietary algorithms of commercially available monitors. The purpose of this study was to investigate whether a more mechanism-based parameter of EEG analysis (symbolic transfer entropy, STE) can separate responsive from unresponsive patients better than a strictly probabilistic parameter (permutation entropy, PE) under clinical conditions. In this prospective single-center study, the EEG of 60 surgical ASA I-III patients was recorded perioperatively. During induction of and emergence from anesthesia, patients were asked to squeeze the investigators' hand every 15s. Time of loss of responsiveness (LoR) during induction and return of responsiveness (RoR) during emergence from anesthesia were registered. PE and STE were calculated at -15s and +30s of LoR and RoR and their ability to separate responsive from unresponsive patients was evaluated using accuracy statistics. 56 patients were included in the final analysis. STE and PE values decreased during anesthesia induction and increased during emergence. Intra-individual consistency was higher during induction than during emergence. Accuracy values during LoR and RoR were 0.71 (0.62-0.79) and 0.60 (0.51-0.69), respectively for STE and 0.74 (0.66-0.82) and 0.62 (0.53-0.71), respectively for PE. For the combination of LoR and RoR, values were 0.65 (0.59-0.71) for STE and 0.68 (0.62-0.74) for PE. The ability to differentiate between the clinical status of (un)responsiveness did not significantly differ between STE and PE at any time. Mechanism-based EEG analysis did not improve differentiation of responsive from unresponsive patients compared to the probabilistic PE.Trial registration: German Clinical Trials Register ID: DRKS00030562, November 4, 2022, retrospectively registered.
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Affiliation(s)
- Robert Zanner
- Department of Anesthesiology, HELIOS University Clinic Wuppertal, Witten/Herdecke University, Heusnerstr. 40, 42283, Wuppertal, Germany
- Department of Anesthesiology and Intensive Care, School of Medicine, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany
| | - Sebastian Berger
- Department of Anesthesiology and Intensive Care, School of Medicine, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany
| | - Natalie Schröder
- Department of Anesthesiology, HELIOS University Clinic Wuppertal, Witten/Herdecke University, Heusnerstr. 40, 42283, Wuppertal, Germany
- Klinikum Fünfseenland, Robert-Koch-Allee 6, 82131, Gauting, Germany
| | - Matthias Kreuzer
- Department of Anesthesiology and Intensive Care, School of Medicine, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany
| | - Gerhard Schneider
- Department of Anesthesiology, HELIOS University Clinic Wuppertal, Witten/Herdecke University, Heusnerstr. 40, 42283, Wuppertal, Germany.
- Department of Anesthesiology and Intensive Care, School of Medicine, Technical University of Munich, Ismaninger Str. 22, 81675, Munich, Germany.
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Kumaria A, Hughes M, Fenner H, Moppett IK, Smith SJ. Total intravenous anaesthesia with propofol and remifentanil is associated with reduction in operative time in surgery for glioblastoma when compared with inhalational anaesthesia with sevoflurane. J Clin Neurosci 2024; 120:191-195. [PMID: 38266592 DOI: 10.1016/j.jocn.2024.01.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2023] [Revised: 01/15/2024] [Accepted: 01/19/2024] [Indexed: 01/26/2024]
Abstract
BACKGROUND Total intravenous anaesthesia (TIVA) is emerging as a preferred neuroanaesthetic agent compared with inhalational anaesthetic (IA) agents. We asked if TIVA with propofol and remifentanil was associated with shorter operative times compared to IA using sevoflurane in brain tumour surgery under GA. METHODS We performed a retrospective analysis of all patients undergoing surgery for glioblastoma (GBM). We assessed choice of GA agent (TIVA or IA) with total time patient was under GA (anaesthetic time), operative time and time taken to recover fully from GA (recovery time). RESULTS Over a two year period 263 patients underwent surgery under GA for their GBM including 188 craniotomy operations, 63 burr hole biopsy procedures and 12 open biopsy procedures. Of these, 79 operations took place under TIVA and 184 operations under IA. TIVA was associated with significantly reduced mean operative time including time taken to wake up in theatre (104 min with TIVA, 129 min with IA; p = 0.02). TIVA was also associated with trends toward shorter mean recovery time (118 min, versus 135 min with IA; p = 0.08) and shorter mean anaesthetic time (163 min, versus 181 min with IA; p = 0.07). There was no difference between TIVA and IA groups as regards duration of inpatient stay, readmission rates, complications or survival. CONCLUSIONS TIVA with propofol and remifentanil may reduce anaesthetic, operative and recovery times in patients undergoing surgery for their GBM. These findings may be attributable to favourable effects on intracranial pressure and cerebral perfusion, as well as rapid recovery from GA. In addition to clinical advantages, there may be financial and logistical benefits.
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Affiliation(s)
- Ashwin Kumaria
- Department of Neurosurgery, Queen's Medical Centre, Nottingham University Hospitals, Nottingham, United Kingdom.
| | - Matthew Hughes
- Department of Neurosurgery, Queen's Medical Centre, Nottingham University Hospitals, Nottingham, United Kingdom
| | - Helen Fenner
- Department of Anaesthesia, Queen's Medical Centre, Nottingham University Hospitals, Nottingham, United Kingdom
| | - Iain K Moppett
- Department of Anaesthesia, Queen's Medical Centre, Nottingham University Hospitals, Nottingham, United Kingdom; School of Medicine, University of Nottingham, United Kingdom
| | - Stuart J Smith
- Department of Neurosurgery, Queen's Medical Centre, Nottingham University Hospitals, Nottingham, United Kingdom; School of Medicine, University of Nottingham, United Kingdom
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Martindale AE, Morris DS, Cromarty T, Fennell-Wells A, Duane B. Environmental impact of low-dose methoxyflurane versus nitrous oxide for analgesia: how green is the 'green whistle'? Emerg Med J 2024; 41:69-75. [PMID: 37770121 DOI: 10.1136/emermed-2022-213042] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Accepted: 09/12/2023] [Indexed: 10/03/2023]
Abstract
BACKGROUND The NHS has the target of reducing its carbon emission by 80% by 2032. Part of its strategy is using pharmaceuticals with a less harmful impact on the environment. Nitrous oxide is currently used widely within the NHS. Nitrous oxide, if released into the atmosphere, has a significant environmental impact. Methoxyflurane, delivered through the Penthrox 'green whistle' device, is a short-acting analgesic and is thought to have a smaller environmental impact compared with nitrous oxide. METHODS Life cycle impact assessment (LCIA) of all products and processes involved in the manufacture and use of Penthrox, using data from the manufacturer, online sources and LCIA inventory Ecoinvent. These data were analysed in OpenLCA. Impact data were compared with existing data on nitrous oxide and morphine sulfate. RESULTS This LCIA found that Penthrox has a climate change effect of 0.84 kg carbon dioxide equivalent (CO2e). Raw materials and the production process contributed to majority of the impact of Penthrox across all categories with raw materials accounting for 34.40% of the total climate change impact. Penthrox has a climate change impact of 117.7 times less CO2e compared with Entonox. 7 mg of 100 mg/100 mL of intravenous morphine sulfate had a climate change effect of 0.01 kg CO2e. CONCLUSIONS This LCIA has shown that the overall 'cradle-to-grave' environmental impact of Penthrox device is better than nitrous oxide when looking specifically at climate change impact. The climate change impact for an equivalent dose of intravenous morphine was even lower. Switching to the use of inhaled methoxyflurane instead of using nitrous oxide in certain clinical situations could help the NHS to reach its carbon emission reduction target.
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Affiliation(s)
| | - Daniel S Morris
- Ophthalmology, University Hospital of Wales, Cardiff, UK
- Wilderness Medical Training, Wilderness Medical Training, Kendal, UK
| | - Thomas Cromarty
- Emergency Medicine, Southampton Children's Hospital, Southampton, UK
| | | | - Brett Duane
- Dental Science, Trinity College Dublin, Dublin, Ireland
- Dental Science, Trinity College Dublin, Dublin, Ireland
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Dubowitz J, Riedel B, Blaas C, Hiller J, Braat S. On the horns of a dilemma: choosing total intravenous anaesthesia or volatile anaesthesia for cancer surgery, an enduring controversy. Br J Anaesth 2024; 132:5-9. [PMID: 37884407 DOI: 10.1016/j.bja.2023.10.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Accepted: 10/01/2023] [Indexed: 10/28/2023] Open
Abstract
Two methods for administering general anaesthesia are widely used: propofol-based total intravenous anaesthesia (propofol-TIVA) and inhalation volatile agent-based anaesthesia. Both modalities, which have been standards of care for several decades, boast a robust safety profile. Nevertheless, the potential differential effects of these anaesthetic techniques on immediate, intermediate, and extended postoperative outcomes remain a subject of inquiry. We discuss a recently published longitudinal analysis stemming from a multicentre randomised controlled trial comparing sevoflurane-based inhalation anaesthesia with propofol-TIVA in older patients with cancer, which showed a reduced incidence of emergence and postoperative delirium, comparable postoperative complication rates within 30 days after surgery, and comparable long-term survival rates. We undertake an assessment of the trial's methodological strengths and limitations, contextualise its results within the broader scientific evidence, and explore avenues for resolving the extant controversies in anaesthetic choice for cancer surgery. We aim to pave the way for the incorporation of precision medicine paradigms into the evolving landscape of perioperative care for patients with cancer.
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Affiliation(s)
- Julia Dubowitz
- Department of Anaesthesia, Perioperative Medicine, and Pain Medicine, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia; Department of Critical Care, University of Melbourne, Melbourne, VIC, Australia; Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia.
| | - Bernhard Riedel
- Department of Anaesthesia, Perioperative Medicine, and Pain Medicine, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia; Department of Critical Care, University of Melbourne, Melbourne, VIC, Australia; Sir Peter MacCallum Department of Oncology, University of Melbourne, Melbourne, VIC, Australia
| | - Celia Blaas
- Department of Anaesthesia, Perioperative Medicine, and Pain Medicine, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Jonathan Hiller
- Department of Anaesthesia, Perioperative Medicine, and Pain Medicine, Peter MacCallum Cancer Centre, Melbourne, VIC, Australia
| | - Sabine Braat
- Centre for Epidemiology and Biostatistics, Melbourne School of Population and Global Health, University of Melbourne, Melbourne, VIC, Australia; MISCH (Methods and Implementation Support for Clinical Health) Research Hub, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, VIC, Australia
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Adi O, Apoo FN, Fong CP, Ahmad AH, Roslan NL, Khan FA, Fathil S. Inhaled anaesthetic gas for severe bronchospasm at the emergency department. Am J Emerg Med 2024; 75:179-180. [PMID: 37487778 DOI: 10.1016/j.ajem.2023.07.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Accepted: 07/19/2023] [Indexed: 07/26/2023] Open
Affiliation(s)
- Osman Adi
- Resuscitation & Emergency Critical Care Unit (RECCU), Trauma & Emergency Department, Hospital Raja Permaisuri Bainun, Ipoh, Perak, Malaysia.
| | - Farah Nuradhwa Apoo
- Resuscitation & Emergency Critical Care Unit (RECCU), Trauma & Emergency Department, Hospital Raja Permaisuri Bainun, Ipoh, Perak, Malaysia
| | - Chan Pei Fong
- Resuscitation & Emergency Critical Care Unit (RECCU), Trauma & Emergency Department, Hospital Raja Permaisuri Bainun, Ipoh, Perak, Malaysia
| | - Azma Haryaty Ahmad
- Resuscitation & Emergency Critical Care Unit (RECCU), Trauma & Emergency Department, Hospital Raja Permaisuri Bainun, Ipoh, Perak, Malaysia
| | - Nurul Liana Roslan
- Resuscitation & Emergency Critical Care Unit (RECCU), Hospital Kuala Lumpur, Malaysia
| | | | - Shahridan Fathil
- Department of Anaesthesia, Gleneagles Hospital Medini Johor, Iskandar Puteri, Johor, Malaysia; Department of anaesthesiology and intensive care, Faculty of Medicine, Universiti Kebangsaan Malaysia, Kuala Lumpur, Malaysia
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Barik AK, Mohanty CR, Gupta A, Radhakrishnan RV, Kumar RK. Re: Inhaled anesthetic gas for severe bronchospasm at the emergency department. Am J Emerg Med 2024; 75:177-178. [PMID: 37487776 DOI: 10.1016/j.ajem.2023.07.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 07/19/2023] [Indexed: 07/26/2023] Open
Affiliation(s)
- Amiya Kumar Barik
- Department of Anesthesia and Intensive Care, Postgraduate Institute of Medical Education and Research, Chandigarh, India
| | - Chitta Ranjan Mohanty
- Department of Trauma and Emergency, All India Institute of Medical Sciences, Bhubaneswar, India.
| | - Anju Gupta
- Department of Anesthesia, Pain Medicine, and Critical Care, All India Institute of Medical Sciences, New Delhi, India
| | | | - Rajani Kant Kumar
- Department of Anesthesia and Intensive Care, Postgraduate Institute of Medical Education and Research, Chandigarh, India
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Aggarwal S, Misquith JCR, Rao ST, Mahanta P. Comparison of three scoring criteria to assess recovery from general anesthesia in the postanesthesia care unit in the indian population. Ann Afr Med 2024; 23:82-86. [PMID: 38358176 PMCID: PMC10922174 DOI: 10.4103/aam.aam_165_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Revised: 11/08/2023] [Accepted: 11/28/2023] [Indexed: 02/16/2024] Open
Abstract
Background Different discharge criteria are available for shifting patients out from postanesthesia care room following surgery. This study was done to compare the three-scoring system namely traditional time-based criteria, Fast track criteria and modified Aldrete score, in Indian population patients who recover after general anesthesia in postanesthesia care unit (PACU). Materials and Methods Three hundred and seventy-five patients scheduled for general anesthesia were included in this study. Induction of anesthesia was done with intravenous (IV) propofol and maintained with sevoflurane inhalation with oxygen and nitrous oxide. Reversal of residual neuromuscular blockade was done with IV neostigmine and glycopyrrolate. Patients were shifted to PACU following tracheal extubation and recovery was assessed using the traditional time-based criteria, fast track criteria, and modified Aldrete score. Results As per modified Aldrete score, mean time of shift out is 19 min with median of 15 min and standard deviation of 21.7 min. As per fast-track score, mean time of shift out is 187 min with median of 30 min and standard deviation of 243.7 min. As per the time-based criteria, mean time of shift out is 222 min with median of 240 min and standard deviation of 136.8 min. While using modified Aldrete score, majority of patients had a shorter stay in PACU and faster time to shift out as compared to fast-track criteria and traditional time-based criteria. Conclusion Modified Aldrete score when compared to fast-track scoring and time-based criteria shows early recovery and reduces the length of stay in PACU.
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Affiliation(s)
- Shagun Aggarwal
- Department of Anaesthesiology, Mahatma Gandhi Medical College and Hospital, Jaipur, Rajasthan, India
| | - Julie C R Misquith
- Department of Anaesthesiology, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, India
| | - Sumesh T. Rao
- Department of Anaesthesiology, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, India
| | - Priyanka Mahanta
- Department of Anaesthesiology, Kasturba Medical College, Mangalore, Manipal Academy of Higher Education, Manipal, India
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Caviglia M, Ucciero A, Di Filippo A, Trotta F, Barone-Adesi F. Use of halogenated anaesthetics in Italy and their associated carbon footprint: a country-wide study. Anaesthesia 2024; 79:96-97. [PMID: 37819583 DOI: 10.1111/anae.16140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/19/2023] [Indexed: 10/13/2023]
Affiliation(s)
- M Caviglia
- Center for Research and Training in Disaster Medicine, Humanitarian Aid and Global Health, Università del Piemonte Orientale, Novara, Italy
| | - A Ucciero
- Hospital Pharmacy AOU Maggiore della Carità, Novara, Italy
| | | | - F Trotta
- Italian Medicines Agency, Rome, Italy
| | - F Barone-Adesi
- Center for Research and Training in Disaster Medicine, Humanitarian Aid and Global Health, Università del Piemonte Orientale, Novara, Italy
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Rao A, Menikefs P. Anesthesiologists should lead nitrous oxide mitigation efforts. Can J Anaesth 2024; 71:152-153. [PMID: 37853280 DOI: 10.1007/s12630-023-02625-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 09/17/2023] [Accepted: 09/19/2023] [Indexed: 10/20/2023] Open
Affiliation(s)
- Anita Rao
- Ontario's Anesthesiologists Environmental Sustainability Working Group, Toronto, ON, Canada.
- Trillium Health Partners, Mississauga, ON, Canada.
| | - Peter Menikefs
- Ontario's Anesthesiologists Environmental Sustainability Working Group, Toronto, ON, Canada
- Unity Health, St. Joseph's Health Centre, Toronto, ON, Canada
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Cai Y, Yi Z, Ou H, Dou Y, Huang H, Chen B. Effects of Anesthetics on Cardiac Repolarization in Adults: A Network Meta-Analysis of Randomized Clinical Trials. Heart Surg Forum 2023; 26:E905-E916. [PMID: 38178332 DOI: 10.59958/hsf.6969] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Accepted: 12/19/2023] [Indexed: 01/06/2024]
Abstract
OBJECTIVES Prolongation of cardiac repolarization, especially the heart rate-corrected QT (QTc) interval, is associated with life-threatening dysrhythmias. This study aimed to identify the anesthetic with the lowest risk of prolonging cardiac repolarization and provide guidance for anesthesia management in patients with cardiac diseases or long QT syndrome. METHODS Randomized controlled trials (RCTs) comparing the effects of anesthetics on cardiac repolarization indices were searched for in multiple databases. The primary outcome was QTc; and the secondary outcomes were other repolarization indices. A network meta-analysis was conducted using a frequentist approach and registered with the International Prospective Register of Systematic Reviews (PROSPERO) database (CRD42022304970). RESULTS Thirteen RCTs investigating 953 adults with normal QTc interval and without cardiovascular diseases were included. Direct meta-analyses found that propofol had less influence than sevoflurane (95% confidence interval (CI): 16.10, 33.54) and desflurane (95% CI: 4.85, 35.36), and sevoflurane had less influence than desflurane (95% CI: 6.96, 19.39) on QTc prolongation. Network analysis found that propofol had less influence than sevoflurane (95% CI: 17.78, 29.63), halothane (95% CI: 11.29, 41.24), desflurane (95% CI: 23.79, 39.88), and isoflurane (95% CI: 20.11, 46.10), and sevoflurane had less influence than desflurane (95% CI: 0.43, 15.82) on QTc prolongation. The rank order of cumulative ranking curve analysis was propofol (100%), sevoflurane (63.8%), halothane (49.5%), desflurane (21.1%), and isoflurane (15.6%). The direct meta-analysis found that propofol had less influence than sevoflurane on QT prolongation (95% CI: 23.12, 57.86). Other secondary outcomes showed no conclusive findings. CONCLUSIONS This meta-analysis found that propofol had a minimal effect on QTc prolongation, followed by sevoflurane and desflurane in adults with normal QTc interval and without cardiovascular diseases. Propofol is the best anesthetic for adult patients with long QT syndrome or cardiac diseases, but still needs more robust evidence.
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Affiliation(s)
- Yongheng Cai
- Department of Anesthesia, The Second Affiliated Hospital of Chongqing Medical University, 400000 Chongqing, China.
| | - Zongping Yi
- Department of Anesthesia, The Second Affiliated Hospital of Chongqing Medical University, 400000 Chongqing, China.
| | - Hanwen Ou
- Department of Anesthesia, The Second Affiliated Hospital of Chongqing Medical University, 400000 Chongqing, China.
| | - Yong Dou
- Department of Anesthesia, The Second Affiliated Hospital of Chongqing Medical University, 400000 Chongqing, China.
| | - He Huang
- Department of Anesthesia, The Second Affiliated Hospital of Chongqing Medical University, 400000 Chongqing, China.
| | - Bing Chen
- Department of Anesthesia, The Second Affiliated Hospital of Chongqing Medical University, 400000 Chongqing, China.
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Karaman Y, Cakmak M, Gunturk S, Aydin G, Guvenli Y. Current Anesthetic Management in a 20-Month-Old Pediatric Patient With Intestinal Transplantation Due to Microvillous Inclusion Disease. EXP CLIN TRANSPLANT 2023; 21:992-995. [PMID: 33663362 DOI: 10.6002/ect.2020.0385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Intestinal transplantation is a complex procedure both in terms of anesthesia and surgery. In particular, pediatric anesthesia management during intestinal transplant surgery can become even more complicated. It has been stated that propofol, remifentanil, and sevoflurane reduce patient mortality by reducing the incidence of intestinal ischemiareperfusion injury. Although studies of these agents continue to be conducted in vivo or in vitro, these anesthetics are currently used for specific procedures that have a high risk of incurring ischemia-reperfusion injury. Herein, we present the case of a male child, aged 20 months, who was dependent on total parenteral nutrition and was found to have intestinal failure associated with liver disease type 1. Hematologic tests showed findings of anemia and metabolic acidosis. Propofol was administered for induction of anesthesia. Anesthesia maintenance was achieved using sevoflurane with remifentanil infusion. We ensured safe and adequate vascular access in the patient and performed hematologic and biochemical tests with detailed system controls. Before the procedure, we prepared a leukocyte-poor erythrocyte suspension, leukocyte-poor random or apheresis platelets, and ABO- and Rh-compatible fresh frozen plasma. We monitored for signs of acidosis, hypotension, coagulation disorders, and hyperkalemia during the reperfusion period.We maintained patient normothermia. In this case report on the anesthetic management of a pediatric patient aged 20 months who received a small bowel transplant due to microvillous inclusion disease, we found that the selection of anesthetic agents may affect the prognosis of future surgical procedures.
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Affiliation(s)
- Yucel Karaman
- From the University of Health Sciences, Izmir Tepecik Training and Research Hospital, Department of Anesthesiology and Reanimation, Izmir, Turkey
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Wright KN, Melnyk AI, Emont J, Van Dis J. Sustainability in Obstetrics and Gynecology. Obstet Gynecol 2023; 142:1341-1346. [PMID: 37944151 DOI: 10.1097/aog.0000000000005435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Accepted: 09/14/2023] [Indexed: 11/12/2023]
Abstract
Current practices in the U.S. health care industry drive climate change. This review summarizes the vast research on the negative health effects of the climate crisis on patients as relevant to obstetrics and gynecology. We further propose solutions to decarbonize operating rooms, labor and delivery units, and nurseries and neonatal intensive care units through evidence-based reduction in our single-use supply, energy, and water, as well as anesthetic gases and appropriate waste sorting.
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Affiliation(s)
- Kelly N Wright
- Division of Minimally Invasive Gynecologic Surgery, Department of Obstetrics and Gynecology, Cedars-Sinai Medical Center, Los Angeles, California; the Division of Urogynecology and Pelvic Reconstructive Surgery, Department of Obstetrics, Gynecology, and Reproductive Sciences, Pittsburgh, Pennsylvania; and the Department of Obstetrics and Gynecology, Columbia University Medical Center, and NewYork-Presbyterian Hospital, New York, and the Department of Obstetrics and Gynecology, University of Rochester Medical Center, Rochester, New York
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Ocmen E, Erdost HA, Hanci V. The bibliometric analysis of most cited 100 papers in anesthesia-induced neurotoxicity. Medicine (Baltimore) 2023; 102:e36508. [PMID: 38050226 PMCID: PMC10695551 DOI: 10.1097/md.0000000000036508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 11/16/2023] [Indexed: 12/06/2023] Open
Abstract
Anesthesia-induced neurotoxicity is a major concern for anesthetists for more than 20 years. Many experimental and clinical studies have been conducted on this topic since late 1990s. However, bibliometric analysis of these papers has not been reported. In this study, we aimed to analyze the 100 most cited articles on anesthesia-induced neurotoxicity. It was planned as cross-sectional study. On January 30, 2023, we searched the "Web of Science (WOS)" database for anesthesia-induced neurotoxicity and most cited 100 papers about this topic were obtained. Data such as authors' names, year of publication, name of the journal, type of paper, and citation numbers were analyzed. The most cited 100 papers were read by the investigators, and the anesthetic, animal type in experimental studies, any protective agent and the method for detecting neurotoxicity used in the studies were also noted. There were 75 articles and 22 reviews in the 100 most cited articles. We found that most of the papers in most cited 100 list were published between 2010 to 1024. Most of the papers (11%) were from Harvard University and almost half of the papers (49%) were published in Anesthesiology. A great number of studies were performed in newborns or early childhood (85.5%) and inhalational anesthetics (54.7%) were the most studied anesthetic type. Most of the most cited 100 papers were published in Q1 journals (P = .012) and the continent of the most journals in this list was America (P = .014). The median total and annual citation numbers of funded papers were statistically significantly higher (P < .001 and P < .001 respectively). Anesthesia-induced neurotoxicity is very important, especially for pediatric anesthetists. This study is the first to conduct a bibliometric analysis of the most cited 100 publications on this field. Although there was a gap in the publications about this topic during COVID-19 pandemic, we believe that there will be many more publications on anesthesia-induced neurotoxicity since the mechanism, outcome and possible protection are still unknown.
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Affiliation(s)
- Elvan Ocmen
- Dokuz Eylul University, Department of Anesthesiology and Reanimation, Balçova/Izmir, Turkey
| | - Hale Aksu Erdost
- Dokuz Eylul University, Department of Anesthesiology and Reanimation, Balçova/Izmir, Turkey
| | - Volkan Hanci
- Dokuz Eylul University, Department of Anesthesiology and Reanimation, Balçova/Izmir, Turkey
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Bodnar MJ, Ratuski AS, Weary DM. Mouse isoflurane anesthesia using the drop method. Lab Anim 2023; 57:623-630. [PMID: 37144336 PMCID: PMC10693727 DOI: 10.1177/00236772231169550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Accepted: 03/27/2023] [Indexed: 05/06/2023]
Abstract
Anesthesia with isoflurane prior to carbon dioxide euthanasia is recommended as a refinement, but vaporizer access can be limited. An alternative to vaporizers is the 'drop' method, introducing a fixed volume of isoflurane into the induction chamber. Previous work suggests that isoflurane administered at a concentration of 5% via the drop method is effective but aversive to mice; lower concentrations have not been tested. We assessed mouse behavior and insensibility with induction using the drop method for isoflurane concentrations below 5%. Male Crl:CD-1 (ICR) mice (n = 27) were randomly allocated to one of three isoflurane concentrations: 1.7%, 2.7%, and 3.7%. During induction, measures of insensibility and stress-related behaviors were recorded. All mice reached a surgical plane of anesthesia, and mice exposed to higher concentrations did so more quickly; as concentrations increased from 1.7 to 2.7 and 3.7%, the time to recumbency (Least squares means ± SE: 120.5 s ± 8.1, 97.9 s ± 8.1, and 82.8 s ± 8.1, respectively), loss of righting reflex (149.1 s ± 8.5, 127.7 s ± 8.5, and 100.7 s ± 8.5, respectively), and loss of pedal withdrawal reflex (214.5 s ± 8.3, 172.2 s ± 8.3, and 146.4 s ± 8.3, respectively) all declined. Rearing was the most frequently performed stress-related behavior, and was most pronounced immediately following isoflurane administration for all treatments. Our results indicate that the drop method can be used to effectively anesthetize mice with isoflurane concentrations as low as 1.7%; future work should assess mouse aversion.
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Affiliation(s)
- Maya J Bodnar
- UBC Animal Welfare Program, Faculty of Land and Food Systems, University of British Columbia, Canada
| | - Anna S Ratuski
- UBC Animal Welfare Program, Faculty of Land and Food Systems, University of British Columbia, Canada
| | - Daniel M Weary
- UBC Animal Welfare Program, Faculty of Land and Food Systems, University of British Columbia, Canada
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Yoon S, Jung SY, Kim MS, Yoon D, Cho Y, Jeon Y. Impact of Propofol-based Total Intravenous Anesthesia Versus Inhalation Anesthesia on Long-term Survival After Cancer Surgery in a Nationwide Cohort. Ann Surg 2023; 278:1024-1031. [PMID: 35837948 DOI: 10.1097/sla.0000000000005568] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE To compare the impact of propofol-based total intravenous anesthesia (TIVA) versus inhalational anesthesia (IA) on the overall survival following cancer surgery. BACKGROUND The association between intraoperative anesthetics and patients' long-term outcomes following cancer surgery remains controversial. METHODS This retrospective cohort study used nationwide data from the Korean National Health Insurance Service. Adult patients who underwent cancer resection surgery (breast, gastric, lung, liver, kidney, colorectal, pancreatic, esophageal, and bladder cancer) under general anesthesia between January 2007 and December 2016 were included. Patients were divided into propofol-based TIVA or IA groups according to the type of anesthesia received. A total of 312,985 patients (37,063 in the propofol-based TIVA group and 275,922 patients in the IA group) were eligible for analysis. The primary outcome was the comparison of overall survival following surgery between the groups in each cancer type. We compared the all-cause mortality between the 2 groups, stratified by cancer type using time-dependent Cox regression after propensity score-based inverse probability of treatment weighting. We further examined the comparison of overall survival in a meta-analysis using data from our study and previously published data comparing propofol-based TIVA with IA after cancer surgery. RESULTS The number of deaths in the propofol-based TIVA and IA groups was 5037 (13.6%) and 45,904 (16.6%), respectively; the median (interquartile range) follow-up duration was 1192 (637-2011) days. Multivariable Cox proportional hazards regression analysis revealed no significant association between the type of general anesthesia and overall survival after cancer surgery in the weighted cohort for each cancer type (all P >0.05) and for total population [adjusted hazard ratio (HR): 0.98, 95% confidence interval (CI): 0.93-1.04]. In a meta-analysis, single-center studies showed higher overall survival in the TIVA group than in the IA group (pooled adjusted HR: 0.65, 95% CI: 0.47-0.91, P =0.01), while multicenter studies showed insignificant pooled adjusted HRs (pooled adjusted HR: 1.05, 95% CI: 0.82-1.33, P =0.71). CONCLUSIONS There is no association between the type of general anesthesia used during cancer surgery and postoperative overall, 1-, and 5-year survival.
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Affiliation(s)
- Susie Yoon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Sun-Young Jung
- College of Pharmacy, Chung-Ang University, Seoul, Republic of Korea
- Department of Global Innovative Drugs, Graduate School of Chung-Ang University, Seoul, Republic of Korea
| | - Myo-Song Kim
- Department of Global Innovative Drugs, Graduate School of Chung-Ang University, Seoul, Republic of Korea
| | - Danbi Yoon
- College of Statistics, Sungkyunkwan University, Seoul, Republic of Korea
| | - Younghae Cho
- College of Statistics, Sungkyunkwan University, Seoul, Republic of Korea
| | - Yunseok Jeon
- Department of Anesthesiology and Pain Medicine, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Republic of Korea
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Jung H, Kim H, Lee SW. Anesthetic management for surgery in a nemaline myopathy patient with difficult airway: A CARE-compliant case report. Medicine (Baltimore) 2023; 102:e36174. [PMID: 37986350 PMCID: PMC10659651 DOI: 10.1097/md.0000000000036174] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Accepted: 10/27/2023] [Indexed: 11/22/2023] Open
Abstract
RATIONALE Nemaline myopathy (NM) is a congenital disease characterized by nonprogressive or slowly progressing muscle weakness and may increase the risk of anesthesia in case of respiratory muscle or cardiac involvement. Care should be taken to prevent respiratory failure after surgery. PATIENT CONCERNS A 35-year-old man with NM, who had difficult airway, restrictive ventilatory pattern, and pulmonary hypertension, required general anesthesia for surgery because of limited mouth opening. DIAGNOSES The patient was diagnosed with NM (ACTA1 mutation) and coronoid hyperplasia. INTERVENTIONS Awake fiberoptic nasal intubation was performed following preparations for analgesia. General anesthesia was maintained using inhalational anesthetics and opioids without using neuromuscular blocking agents. OUTCOMES General anesthesia remained well maintained during surgery, with no movement or spontaneous breathing of the patient and he recovered from anesthesia uneventfully without complications. LESSONS This report highlights the safe performance of anesthesia induction and recovery in a case where anesthesia management is necessary for surgery in a patient of NM at a high risk of anesthesia-related complications.
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Affiliation(s)
- Hoon Jung
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - Hyunjee Kim
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
| | - See Woo Lee
- Department of Anesthesiology and Pain Medicine, School of Medicine, Kyungpook National University, Daegu, Republic of Korea
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Affiliation(s)
| | - Sophia Lentzos
- NIHR Evaluation Trials and Studies Coordinating Centre, UK
| | - Richard Seglenieks
- Department of Anaesthesia, Pain and Perioperative Medicine, Department of Critical Care, Footscray Hospital, University of Melbourne, Australia
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Patterson C, Schmidt R, Goncin U, Walker ME, Hedlin P. A comparison of sevoflurane waste anesthetic gas concentration across three Saskatoon health care facilities. Can J Anaesth 2023; 70:1860-1862. [PMID: 37715045 DOI: 10.1007/s12630-023-02580-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2023] [Revised: 07/04/2023] [Accepted: 07/06/2023] [Indexed: 09/17/2023] Open
Affiliation(s)
- C Patterson
- Department of Anesthesiology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - R Schmidt
- Department of Anesthesiology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - U Goncin
- Department of Anesthesiology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - M E Walker
- Department of Anesthesiology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - P Hedlin
- Department of Anesthesiology, College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada.
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Bakhtawar J, Siraj S, Sulaiman H. Total Intravenous Anaesthesia <em>vs</em>. Inhalational Agents in a Patient with Autoimmune Liver Disease. J Coll Physicians Surg Pak 2023; 33:1333. [PMID: 37926892 DOI: 10.29271/jcpsp.2023.11.1333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 06/13/2023] [Indexed: 11/07/2023]
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Zou X, Zhang X, Qiang T, Hu X, Zhang L. Melatonin attenuates sevoflurane-induced hippocampal damage and cognitive deficits in neonatal mice by suppressing CypD in parvalbumin neurons. Brain Res Bull 2023; 204:110809. [PMID: 37931809 DOI: 10.1016/j.brainresbull.2023.110809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2023] [Revised: 10/27/2023] [Accepted: 11/03/2023] [Indexed: 11/08/2023]
Abstract
BACKGROUND Sevoflurane, a commonly administered inhaled anesthetic, is found to induce synaptic and mitochondrial damage in neonatal mice. Mitochondrial membrane potential (MMP) changes, mediated by Cyclophilin D (CypD), are implicated in mitochondrial function. Melatonin, known for its significant neuroprotective properties, was investigated in this study to elucidate its mechanisms in mitigating the cognitive impairment caused by sevoflurane. METHODS The mice were categorized into several groups, including the control, vehicle, sevoflurane, vehicle plus sevoflurane, and melatonin plus sevoflurane groups. From postnatal day 6 to day 8, the mice were administered inhaled sevoflurane or intraperitoneal melatonin. MMP and reactive oxygen species (ROS) were measured using appropriate detection kits. The protein expression levels of PSD95, Synapsin Ⅰ, and CypD in the hippocampus were analyzed through western blotting in acute and prolonged terms. Immunofluorescence staining was used to assess the co-localizations of PSD95 or CypD in parvalbumin (PV) neurons. Cognitive ability was evaluated through novel object recognition, social interaction experiment, and the Morris water maze. RESULTS The findings revealed that repeated exposure to sevoflurane in neonatal mice resulted in cognitive and synaptic impairment. Furthermore, melatonin administration suppressed the ROS and CypD protein expression, enhanced the MMP in mitochondria and synaptic protein expression in PV neurons, and ameliorated cognitive deficits. CONCLUSION Melatonin alleviated sevoflurane-induced cognitive deficits by suppressing CypD and promoting synaptic development in hippocampal PV neurons. These results provide valuable insights into a promising therapeutic approach for preventing neurotoxic injuries caused by general anesthetics.
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Affiliation(s)
- Xuezhu Zou
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei 230061, Anhui Province, China; Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, China
| | - Xiaoyuan Zhang
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei 230061, Anhui Province, China; Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, China
| | - Tingting Qiang
- Department of Anesthesiology, The First Affiliated Hospital of Anhui Medical University, 218 Jixi Road, Hefei 230061, Anhui Province, China
| | - Xianwen Hu
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei 230061, Anhui Province, China; Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, China.
| | - Li Zhang
- Department of Anesthesiology and Perioperative Medicine, The Second Affiliated Hospital of Anhui Medical University, 678 Furong Road, Hefei 230061, Anhui Province, China; Key Laboratory of Anesthesiology and Perioperative Medicine of Anhui Higher Education Institutes, Anhui Medical University, Hefei, China.
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Reins J, Balling F, Baader C, Böck E, Schöniger W, van Erp R, Eff S, Hafner S. [Nephrogenic diabetes insipidus after inhalation sedation with sevoflurane in a patient with COVID-19-associated acute respiratory distress syndrome]. Anaesthesiologie 2023; 72:799-802. [PMID: 37847389 DOI: 10.1007/s00101-023-01350-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 09/07/2023] [Accepted: 09/19/2023] [Indexed: 10/18/2023]
Affiliation(s)
- Johannes Reins
- Abteilung für Anästhesie und Intensivmedizin, Kreiskliniken Günzburg-Krumbach, Klinik Krumbach, Mindelheimer Str. 69, 86381, Krumbach, Deutschland
| | - Florian Balling
- Abteilung für Anästhesie und Intensivmedizin, Kreiskliniken Günzburg-Krumbach, Klinik Krumbach, Mindelheimer Str. 69, 86381, Krumbach, Deutschland
| | - Christoph Baader
- Abteilung für Anästhesie und Intensivmedizin, Kreiskliniken Günzburg-Krumbach, Klinik Krumbach, Mindelheimer Str. 69, 86381, Krumbach, Deutschland
| | - Elfriede Böck
- Abteilung für Anästhesie und Intensivmedizin, Kreiskliniken Günzburg-Krumbach, Klinik Krumbach, Mindelheimer Str. 69, 86381, Krumbach, Deutschland
| | - Wolfgang Schöniger
- Abteilung für Anästhesie und Intensivmedizin, Kreiskliniken Günzburg-Krumbach, Klinik Krumbach, Mindelheimer Str. 69, 86381, Krumbach, Deutschland
| | - Rene van Erp
- Via Medis Nierenzentrum Neu-Ulm MVZ GmbH, Neu-Ulm, Deutschland
| | - Sebastian Eff
- Abteilung für Anästhesie und Intensivmedizin, Kreiskliniken Günzburg-Krumbach, Klinik Krumbach, Mindelheimer Str. 69, 86381, Krumbach, Deutschland
| | - Sebastian Hafner
- Abteilung für Anästhesie und Intensivmedizin, Kreiskliniken Günzburg-Krumbach, Klinik Krumbach, Mindelheimer Str. 69, 86381, Krumbach, Deutschland.
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Heybati K, Zhou F, Baltazar M, Poudel K, Ochal D, Ellythy L, Deng J, Chelf CJ, Welker C, Ramakrishna H. Appraisal of Postoperative Outcomes of Volatile and Intravenous Anesthetics: A Network Meta-Analysis of Patients Undergoing Cardiac Surgery. J Cardiothorac Vasc Anesth 2023; 37:2215-2222. [PMID: 37573213 DOI: 10.1053/j.jvca.2023.07.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/01/2023] [Revised: 07/11/2023] [Accepted: 07/12/2023] [Indexed: 08/14/2023]
Abstract
OBJECTIVES To determine the relative efficacy of specific regimens used as primary anesthetics, as well as the potential combination of volatile and intravenous anesthetics among patients undergoing cardiac, thoracic, and vascular surgery. DESIGN This frequentist, random-effects network meta-analysis was registered prospectively (CRD42022316328) and conducted according to the PRISMA-NMA framework. Literature searches were conducted up to April 1, 2022 across relevant databases. Risk of bias (RoB) and confidence of evidence were assessed by RoB-2 and CINeMA, respectively. Pooled treatment effects were compared with propofol monotherapy. SETTING Fifty-three randomized controlled trials (N = 8,085) were included, of which 46 trials (N = 6,604) enrolled patients undergoing cardiac surgery. PARTICIPANTS Trials enrolling adults (≥18) undergoing cardiac, thoracic, and vascular surgery, using the same induction regimens, and comparing volatile and/or total intravenous anesthesia for the maintenance of anesthesia. Given that the majority of trials focused on those undergoing cardiac surgery and the heterogeneity, analyses were restricted to this population. MEASUREMENT AND MAIN RESULTS Outcomes of interest included intensive care unit (ICU) length of stay (LOS), myocardial infarction, in-hospital and 30-day mortality, stroke, and delirium. Across 19 trials (N = 1,821; 9 arms; I2 = 64.5%), sevoflurane combined with propofol decreased ICU LOS (mean difference [MD] -18.26 hours; 95% CI -34.78 to -1.73 hours), whereas midazolam with propofol (MD 17.51 hours; 95% CI 2.78-32.25 hours) was associated with a significant increase in ICU LOS, when compared with propofol monotherapy. Among 27 trials (N = 4,080; 10 arms; I2 = 0%), midazolam was associated with significantly greater risk of myocardial infarction versus propofol (risk ratio 1.94; 95% CI 1.01-3.71). There were no significant differences across other outcomes. CONCLUSION In patients undergoing cardiac surgery, sevoflurane with propofol was associated with decreased ICU LOS compared with propofol monotherapy. Midazolam with propofol increased ICU LOS compared with propofol alone. The combined use of intravenous and volatile anesthetics should be explored further. Future trials in thoracic and vascular surgery are warranted.
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Affiliation(s)
- Kiyan Heybati
- Mayo Clinic Alix School of Medicine, Mayo Clinic - Rochester, Rochester, MN
| | - Fangwen Zhou
- Faculty of Health Sciences, McMaster University, Hamilton, ON, Canada
| | | | - Keshav Poudel
- Mayo Clinic Alix School of Medicine, Mayo Clinic - Rochester, Rochester, MN
| | - Domenic Ochal
- Mayo Clinic Alix School of Medicine, Mayo Clinic - Rochester, Rochester, MN
| | - Luqman Ellythy
- Mayo Clinic Alix School of Medicine, Mayo Clinic - Rochester, Rochester, MN
| | - Jiawen Deng
- Temerty Faculty of Medicine, University of Toronto, Toronto, ON, Canada
| | | | - Carson Welker
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic - Rochester, Rochester, MN
| | - Harish Ramakrishna
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic - Rochester, Rochester, MN.
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Shiralkar S, Field E, Murphy E, Shelton C. The role of volatile capture technology in desflurane disposal from decommissioned vaporisers. Anaesthesia 2023; 78:1298-1300. [PMID: 37423619 DOI: 10.1111/anae.16044] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2023] [Indexed: 07/11/2023]
Affiliation(s)
- S Shiralkar
- North West School of Anaesthesia, Manchester, UK
| | - E Field
- Cardiff University, Cardiff, UK
| | - E Murphy
- Manchester University NHS Foundation Trust, Manchester, UK
| | - C Shelton
- Lancaster Medical School, Lancaster, UK
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Schnider TW, Minto CF. Variability of predicted propofol concentrations and measured sevoflurane concentrations during general anaesthesia: a single-centre retrospective cohort study. Br J Anaesth 2023; 131:687-693. [PMID: 37541948 DOI: 10.1016/j.bja.2023.06.064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 06/21/2023] [Accepted: 06/22/2023] [Indexed: 08/06/2023] Open
Abstract
BACKGROUND Variability is high in predicted propofol concentrations during clinical anaesthesia titrated by target-controlled infusion (TCI) to maintain a processed EEG parameter (bispectral index [BIS]) within a specified range. We have shown that the potential for improving the pharmacokinetic model is minimal. The drug titration paradox revealed that titration challenges the classical relationship between drug dose and effect in both individuals and the population. We hypothesised that dynamic factors during surgery beyond the static genetic, epigenetic, and other factors such as age, height, and weight affect the necessary dose. We compared the variability of measured end-tidal sevoflurane concentrations with predicted effect-site propofol concentrations when titrated to a BIS range of 40-60, with the hypothesis that the variability in measured sevoflurane concentrations would not be less than the variability in estimated propofol concentrations. METHODS Clinical data from 2280 surgical procedures >1 h in duration were included in the analysis. Anaesthesia with sevoflurane or propofol was based on an institutional protocol. The titration performance for both drugs was assessed by comparing BIS values 30 min after skin incision. The variability of the required concentrations at the same time point was calculated and compared. RESULTS The achieved 30-min post-incision BIS ranges were not significantly different for sevoflurane or propofol TCI (30 [99% CI: 28-33] and 31 [99% CI: 27-36], respectively). The variability of sevoflurane concentrations was not significantly different from measured predicted propofol concentrations during BIS-guided anaesthesia (normalized concentration range of 0.89 [99% CI: 0.78-0.99] and 0.93 [99% CI 0.87-1.02). CONCLUSIONS Improvements in prediction accuracy of pharmacokinetic models beyond that of those already in clinical use are unlikely to reduce variability in target anaesthetic concentrations across patients in clinical practice.
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Affiliation(s)
- Thomas W Schnider
- Department of Anaesthesia, Intensive Care, Emergency and Pain Medicine, Kantonsspital St. Gallen, Switzerland.
| | - Charles F Minto
- Department of Anaesthesia, North Shore Private Hospital, Sydney, NSW, Australia
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Honore PM, Perriens E, Blackman S. Letter to the Editor: ICU- and ventilator-free days with isoflurane or propofol as a primary sedative - A post- hoc analysis of a randomized controlled trial. J Crit Care 2023; 77:154371. [PMID: 37479550 DOI: 10.1016/j.jcrc.2023.154371] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 07/07/2023] [Indexed: 07/23/2023]
Affiliation(s)
- Patrick M Honore
- FCCM, Professor and Head of ICU, CHU UCL Godinne Namur,UCL Louvain Medical Shool, Belgium.
| | - Emily Perriens
- ULB University, Centre Hospitalier Universitaire Brugmann, Brussels, Belgium
| | - Sydney Blackman
- ULB University, Centre Hospitalier Universitaire Brugmann, Brussels, Belgium
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Shanmugam N, Verma R, Sarkar S, Khanna P, Sinha R, Kashyap L, Shende DR, Ray BR, Anand RK, Maitra S, Singh AK, Lomi N. Functional near-infrared spectroscopy guided mapping of frontal cortex, a novel modality for assessing emergence delirium in children: A prospective observational study. Paediatr Anaesth 2023; 33:844-854. [PMID: 37313974 DOI: 10.1111/pan.14708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 05/21/2023] [Accepted: 05/22/2023] [Indexed: 06/15/2023]
Abstract
INTRODUCTION Despite an 18%-30% prevalence, there is no consensus regarding pathogenesis of emergence delirium after anesthesia in children. Functional near-infrared spectroscopy (fNIRS) is an optical neuroimaging modality that relies on blood oxygen level-dependent response, translating to a mean increase in oxyhemoglobin and a decrease in deoxyhemoglobin. We aimed to correlate the emergence delirium in the postoperative period with the changes in the frontal cortex utilizing fNIRS reading primarily and also with blood glucose, serum electrolytes, and preoperative anxiety scores. METHODS A total of 145 ASA I and II children aged 2-5 years, undergoing ocular examination under anesthesia, were recruited by recording the modified Yale Preoperative Anxiety Score after acquiring the Institute Ethics Committee approval and written informed parental consent. Induction and maintenance were done with O2, N2O, and Sevoflurane. The emergence delirium was assessed using the PAED score in the postoperative period. The frontal cortex fNIRS recordings were taken throughout anesthesia. RESULTS A total of 59 children (40.7%) had emergence delirium. The ED+ group had a significant activation left superior frontal cortex (t = 2.26E+00; p = .02) and right middle frontal cortex (t = 2.27E+00; p = .02) during induction, significant depression in the left middle frontal (t = -2.22E+00; p = .02), left superior frontal and bilateral medial (t = -3.01E+00; p = .003), right superior frontal and bilateral medial (t = -2.44E+00; p = .015), bilateral medial and superior (t = -3.03E+00; p = .003), and right middle frontal cortex (t = -2.90E+00; p = .004) during the combined phase of maintenance, and significant activation in cortical activity in the left superior frontal cortex (t = 2.01E+00; p = .0047) during the emergence in comparison with the ED- group. CONCLUSION There is significant difference in the change in oxyhemoglobin concentration during induction, maintenance, and emergence in specific frontal brain regions between children with and without emergence delirium.
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Affiliation(s)
- Nirmal Shanmugam
- Department of Anaesthesiology, Pain Medicine & Critical Care, AIIMS, New Delhi, India
| | - Rohit Verma
- Department of Psychiatry, AIIMS, New Delhi, India
| | - Soumya Sarkar
- Department of Anaesthesiology, AIIMS, Kalyani, India
| | - Puneet Khanna
- Department of Anaesthesiology, Pain Medicine & Critical Care, AIIMS, New Delhi, India
| | - Renu Sinha
- Department of Anaesthesiology, Pain Medicine & Critical Care, AIIMS, New Delhi, India
| | - Lokesh Kashyap
- Department of Anaesthesiology, Pain Medicine & Critical Care, AIIMS, New Delhi, India
| | - Dilip R Shende
- Department of Anaesthesiology, Pain Medicine & Critical Care, AIIMS, New Delhi, India
| | - Bikash Ranjan Ray
- Department of Anaesthesiology, Pain Medicine & Critical Care, AIIMS, New Delhi, India
| | - Rahul Kumar Anand
- Department of Anaesthesiology, Pain Medicine & Critical Care, AIIMS, New Delhi, India
| | - Souvik Maitra
- Department of Anaesthesiology, Pain Medicine & Critical Care, AIIMS, New Delhi, India
| | - Akhil Kant Singh
- Department of Anaesthesiology, Pain Medicine & Critical Care, AIIMS, New Delhi, India
| | - Niewete Lomi
- Department of Ophthalmology, AIIMS, New Delhi, India
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Sagalow ES, Estephan LE, Kumar AT, Hwang M, Krein H, Heffelfinger R. Recovery Benefit With Total Intravenous Anesthesia in Patients Receiving Rhinoplasty. Otolaryngol Head Neck Surg 2023; 169:489-495. [PMID: 36906818 DOI: 10.1002/ohn.319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 02/24/2023] [Indexed: 03/13/2023]
Abstract
OBJECTIVE The aim was to evaluate the difference in recovery when comparing total intravenous anesthesia (TIVA) to inhalational gas anesthesia in patients receiving rhinoplasty. STUDY DESIGN Retrospective review. SETTING Postoperative anesthesia care unit (PACU). METHODS Patients who received a functional or cosmetic rhinoplasty at a single academic institution between April 2017 and November 2020 were included. Inhalational gas anesthesia was in the form of sevoflurane. Phase I recovery time, which was defined as the time it took a patient to reach ≥9/10 on the Aldrete scoring system was recorded, as well as the usage of pain medication in the PACU. The postoperative course and incidence of postoperative nausea and vomiting (PONV) were also collected. RESULTS Two hundred and two patients were identified with 149 (73.76%) who received TIVA and 53 (26.24%) who received sevoflurane. For the patients who received TIVA, the average recovery time was 101.44 minutes (standard deviation [SD]: 34.64) compared to an average recovery time of 121.09 minutes (SD: 50.19) for patients who received sevoflurane leading to a difference of 19.65 minutes (p = 0.002). Patients who received TIVA experienced less PONV (p = 0.001). There were no differences in the postoperative course including surgical or anesthesia complications, postoperative complications, hospital or Emergency Department admissions, or administration of pain medication (p > 0.05 for all). CONCLUSION When utilizing TIVA over inhalational anesthesia, patients undergoing rhinoplasty had significantly increased benefits in terms of reduced phase I recovery times and decreased incidence of PONV. TIVA was demonstrated to be a safe and efficacious method of anesthesia for this patient population.
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Affiliation(s)
- Emily S Sagalow
- Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | - Leonard E Estephan
- Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | - Ayan T Kumar
- Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | - Michelle Hwang
- Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | - Howard Krein
- Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
| | - Ryan Heffelfinger
- Department of Otolaryngology-Head and Neck Surgery, Thomas Jefferson University Hospital, Philadelphia, Pennsylvania, USA
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Santos PS, Gonzaga MS, Araújo MA, Deschk M, de Siqueira CE, Floriano BP, Cancelli CH. Determination of the minimum alveolar concentration of sevoflurane in Holstein steers. Vet Anaesth Analg 2023; 50:415-420. [PMID: 37407361 DOI: 10.1016/j.vaa.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Revised: 06/03/2023] [Accepted: 06/05/2023] [Indexed: 07/07/2023]
Abstract
OBJECTIVE To determine the minimum alveolar concentration (MAC) of sevoflurane in Holstein steers using electric stimulation. STUDY DESIGN Prospective experimental study. ANIMALS A total of 15 Holstein steers aged 7.3 ± 1.2 months and weighing 121 ± 25 kg. METHODS Animals were anesthetized with sevoflurane at 8% in oxygen at 5 L minute-1 via facemask and were intubated with an orotracheal tube of a compatible size. After 15 minutes of stabilization of the initial expired concentration of sevoflurane (Fe'Sevo) at 2.6%, electrical stimulation on the thoracic limb was initiated with a sequence of 2 × 10 ms followed by 2 × 3 second electrical currents of 50 V and 50 Hz, 5 seconds apart. Following each stimulus with a negative response, the Fe'Sevo was decreased by 0.2% and a 15 minute interval was awaited before the next stimulus. The procedure was repeated until the first Fe'Sevo value with a positive motor response was obtained. The Fe'Sevo was then increased by 0.1%, followed by a new stimulus, until a negative response was obtained. The value of MAC was calculated as the arithmetic mean between the lowest Fe'Sevo associated with a negative motor response and the highest Fe'Sevo associated with a positive response. RESULTS The mean MAC for the 15 steers was 2.0 ± 0.3%, which corresponds to 2.1 ± 0.3% at sea level. CONCLUSIONS Based on the proposed methodology, the MAC of sevoflurane for healthy Holstein steers is 2.1 ± 0.3% at sea level. CLINICAL RELEVANCE This Fe'Sevo value can be used to guide depth of anesthesia in steers weighing approximately 120 kg in clinical practice.
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Affiliation(s)
- Paulo Sp Santos
- Department of Animal Clinic, Surgery and Reproduction, Faculty of Veterinary Medicine of Araçatuba, São Paulo State University (UNESP), Araçatuba, SP, Brazil
| | | | - Marcelo A Araújo
- Veterinary Teaching Hospital, Federal University of Mato Grosso do Sul, Campo Grande, MS, Brazil
| | - Mauricio Deschk
- Veterinary Teaching Hospital, Federal University of Juiz de Fora, Juiz de Fora, MG, Brazil
| | - Carlos E de Siqueira
- Department of Animal Clinic, Surgery and Reproduction, Faculty of Veterinary Medicine of Araçatuba, São Paulo State University (UNESP), Araçatuba, SP, Brazil
| | - Beatriz P Floriano
- Department of Small Animal Clinic, Centre of Rural Sciences, Federal University of Santa Maria (UFSM), Santa Maria, RS, Brazil.
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