EAJAIC

The Eurasian Journal of Anesthesiology and Intensive Care (EAJAIC) is an independent-unbiased, peer-reviewed, "double-blind", and open-access journal of current national and international issues and reviews for original clinical and experimental research, interesting case reports, differential diagnoses, editorial opinions, letters to the editor, and educational papers in anesthesiology, algology, and intensive care medicine.

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Original Article
Hyperbaric oxygen therapy in emergencies: approaches to mechanical ventilation and anesthesia
Aims: The aim of this study is to evaluate the epidemiology, anesthesia management, mechanical ventilator (MV) modes, sedative agents, drug dosages, and complications in mechanically ventilated patients undergoing hyperbaric oxygen therapy (HBOT).
Methods: This study was conducted retrospectively and observationally in a tertiary care center. Intubated adult and pediatric patients who received anesthesia and sedation under emergency conditions for HBOT between February 10, 2023, and May 15, 2024, were included. Data were obtained from the hospital information system, patient discharge summaries, and anesthesia observation forms. Patients' demographic data, indications, comorbidities, respiratory parameters, intravenous agents and their dosages, MV parameters, and complications were analyzed.
Results: HBOT was applied to 560 patients, of whom 3.75% (21 patients) received anesthesia and sedation. Among these patients, 29.4% (5 patients) were children, and 70.6% (12 patients) were adults, with an age range of 2 to 93 years. The indications included carbon monoxide intoxication (COI) (75%), COI with burns (17.6%), COI with synthetic cannabinoid intoxication (5.9%), and purpura fulminans (5.9%). A total of 44 sessions were conducted, ranging from 1 to 8 sessions per patient. The drugs used included midazolam (35.3%), dexmedetomidine (29.4%), remifentanil (23.5%), propofol, ketamine, and rocuronium bromide (64.7%). The ventilation modes utilized were SIMV-VC, SIMV-PC, PRVC, and PC. MV-patient asynchrony was observed in 88.2% of cases due to increased sedation dose requirements. Complications included bradycardia, nausea and vomiting, hypo/hypertension, self-extubation, desaturation, and session incompletion. The in-hospital mortality rate was 29.4%.
Conclusion: Anesthesia management in a hyperbaric environment requires a multidisciplinary approach due to the unique physical conditions of the procedure. In intubated patients, the increased need for sedation must be met, and asynchrony should be prevented. During HBOT, propofol, ketamine, dexmedetomidine, remifentanil, and midazolam can be safely used in combination to optimize sedation. Anesthesia management should be individualized to prevent complications.


1. Kirby JP, Snyder J, Schuerer DJE, Peters JS, Bochicchio GV. Essentials of hyperbaric oxygen therapy: 2019 review. Mo Med. 2019;116(3):176-179.
2. Sen S, Sen S. Therapeutic effects of hyperbaric oxygen. Med Gas Res. 2021;11(1):30-33. doi:10.4103/2045-9912.310057
3. Hyldegaard O, Hedetoft M. Hyperbaric oxygen therapy. Ugeskr Laeger. 2020;182(44):V06200463.
4. Memar MY, Yekani M, Alizadeh N, Baghi HB. Hyperbaric oxygen therapy: antimicrobial mechanisms and clinical application for infections. Biomed Pharmacother. 2019;109:440-447. doi:10.1016/j.biopha.2018.10.142
5. Millar IL. Hyperbaric intensive care technology and equipment. Diving Hyperb Med. 2015;45(1):50-56.
6. Bessereau J, Aboab J, Hullin T, et al. Safety of hyperbaric oxygen therapy in mechanically ventilated patients. Int Marit Health. 2017;68(1):46-51. doi:10.5603/IMH.2017.0008
7. Frey G, Lampl L, Radermacher P, Bock KH. Hyperbareoxygenation einbetätigungsfeld für den anästhesisten. Anaesthesist. 1998;47(4):269-289. doi:10.1007/s001010050558
8. Sadler C, Arefieva CAL, Duchnick J, Bermudez R, Witucki P, Shishlov K. Hyperbaric medicine simulation education curriculum: CNS toxicity during treatment table 6 and intubated ICU patient with mucous plugging. Undersea Hyperb Med. 2019;46(4):467-481. doi:10.22462/06. 08.2019.9
9. Kot J. Staffing and training issues in critical care hyperbaric medicine. Diving Hyperb Med. 2015;45(1):47-50.
10. El Hawa AAA, Bekeny JC, Phillips NW, Johnson-Arbor K. Hyperbaric oxygen therapy for paediatric patients: an unintended consequence of the COVID-19 pandemic. J Wound Care. 2021;30(Sup9):S24-S28. doi:10. 12968/jowc.2021.30.Sup9.S24
11. Polzik P, Hansen MB, Olsen NV, Grøndal O, Hyldegaard O. Hyperbaric oxygen therapy may overcome nitric oxide blockage during cyanide intoxication. UHM. 2017;44(3):221-234. doi:10.22462/5.6.2017.3
12. Lawson-Smith P, Jansen EC, Hilsted L, Hyldegaard O. Effect of hyperbaric oxygen therapy on whole blood cyanide concentrations in carbon monoxide intoxicated patients from fire accidents. Scand J Trauma Resusc Emerg Med. 2010;18(1):32. doi:10.1186/1757-7241-18-32
13. Jain KK. Anesthesia in the hyperbaric environment. In: Jain KK, editor. Textbook of hyperbaric medicine. Switzerland: Springer International Publishing AG; 2016.
14. Moon R, Bergquist L, Conklin B, Miller J. Monaghan 225 ventilator use under hyperbaric conditions. Chest. 1986;89(6):846-851. doi:10.1378/chest.89.6.846
15. Kramer WG, Welch DW, Fife WP, Chaikin BN, Medlock C, Gross DR. Pharmacokinetics of pentobarbital under hyperbaric and hyperbaric hyperoxic conditions in the dog. Aviat Space Environ Med. 1983;54(11): 1005-1008.
16. Needham CJ, Brindley PG. The role of neuromuscular blocking drugs in early severe acute respiratory distress syndrome. Can J Anesth. 2012; 59(1):105-108. doi:10.1007/s12630-011-9615-2
17. Hamilton-Farrell M, Bhattacharyya A. Barotrauma. Injury. 2004;35(4): 359-370. doi:10.1016/j.injury.2003.08.020
18. Arieli R, Daskalovic Y, Ertracht O, et al. Flow resistance, work of breathing of humidifiers, and endotracheal tubes in the hyperbaric chamber. Am J Emerg Med. 2011;29(7):725-730. doi:10.1016/j.ajem.2010. 02.003
19. Vermeulen-Cranch Dm. Hyperbarıcoxygen. Anaesthesıaın a high pressure chamber. Proc R Soc Med. 1965;58(5):319-324. doi:10.1177/ 003591576505800514
20. Foster JH. Hyperbaric oxygen therapy: contraindications and complications. J Oral Maxillofac Surg. 1992;50(10):1081-1086. doi:10. 1016/0278-2391(92)90495-l
21. Godek D, Freeman AM. Physiology, diving reflex. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2022 [cited 2022 Sep 26]. Available from:https://www.statpearls.com
22. Manning EP. Central nervous system oxygen toxicity and hyperbaric oxygen seizures. Aerosp Med Hum Perform. 2016;87(5):477-486. doi:10. 3357/AMHP.4463.2016
23. Rose JJ, Nouraie M, Gauthier MC, et al. Clinical outcomes and mortality impact of hyperbaric oxygen therapy in patients with carbon monoxide poisoning. Crit Care Med. 2018;46(7):e649-e655. doi:10.1097/CCM. 0000000000003135
Volume 2, Issue 2, 2025
Page : 67-72
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