Introduction: Hyperbaric oxygenation (HBO) is a clinical method of treatment with oxygen at increased ambient pressure within a chamber. HBO therapy is a non-invasive procedure and has been used for decades in a number of diseases, but is characterized by some features and specific potential sources of risk in addition to the usual risks associated with medical procedures.
Aim: The aim of the present study is to investigate and discuss the main risks and safety aspects associated with hyperbaric oxygen therapy.
Materials and Methods: A review and analysis of publications available in PubMed, Medline, ScienceDirect databases, scientific literature, regulations and guidelines of various organizations were conducted.
Results: Ensuring safety and risk management in hyperbaric medicine are considered in several aspects: patient safety, safety of staff, technical safety in relation to medical equipment. The main hazards and possible complications related to the hyperbaric environment and the breathing mixtures are presented. The analysis of the literature data shows that the most common complications of HBO are ear pain or discomfort due to the problems with middle ear pressure equalization, as well as manifestations of claustrophobia and anxiety in some patients, with variable frequency of reported cases in different studies. More severe and serious complications associated with oxygen toxicity and decompression sickness are rare.
Conclusion: Risk assessment and preventive measures, appropriate training of staff and patients, and compliance with work and safety rules can reduce or eliminate HBO therapy-related complications and incidents.
American Society of Mechanical Engineers. Safety Standard for PVHO-1. ASME, New York, 2007.
AS/NZS 4774.2:2019 Work in Compressed Air and Hyperbaric Facilities, Part 2: Hyperbaric Oxygen Facilities. Available at: https://www.standards.org.au
Banham ND. Oxygen toxicity seizures: 20 years' experience from a single hyperbaric unit. Diving Hyperb Med. 2011 Dec;41(4):202-10.
Bessereau J, Tabah A, Genotelle N, Français A, Coulange M, Annane D. Middle-ear barotrauma after hyperbaric oxygen therapy. Undersea Hyperb Med. 2010 Jul-Aug;37(4):203-8.
Camporesi EM. Side effects of hyperbaric oxygen therapy. Undersea Hyperb Med. 2014 May-Jun;41(3):253-7.
COST B14 Action WG Safety. A European Code of Good Practice in Hyperbaric Oxygen Therapy. European Science Foundation, Mannheim, Germany; May 2004.
Costa DA, Ganilha JS, Barata PC, Guerreiro FG. Seizure frequency in more than 180,000 treatment sessions with hyperbaric oxygen therapy - a single centre 20-year analysis. Diving Hyperb Med. 2019 Sep 30;49(3):167-174.
Edinguele WFOP, Barberon B, Poussard J, Thomas E, Reynier JC, Coulange M. Middle-ear barotrauma after hyperbaric oxygen therapy: a five-year retrospective analysis on 2,610 patients. Undersea Hyperb Med. 2020 Second-Quarter;47(2):217-228.
EN 14931:2006 Pressure vessel for human occupancy (PVHO) – Multi-place pressure chamber systems for hyperbaric therapy – Performance, safety requirements and testing. CEN, Brussels, Belgium.
EN 16081:2011+A1:2013 Hyperbaric chambers-Specific requirements for fire extinguishing systems. CEN.
Heyboer M 3rd, Sharma D, Santiago W, McCulloch N. Hyperbaric Oxygen Therapy: Side Effects Defined and Quantified. Adv Wound Care (New Rochelle). 2017 Jun 1;6(6):210-224.
Heyboer M 3rd, Wojcik SM, Grant WD, Chambers P, Jennings S, Adcock P. Middle ear barotrauma in hyperbaric oxygen therapy. Undersea Hyperb Med. 2014 Sep-Oct;41(5):393-7.
Jain KK. Textbook of Hyperbaric Medicine, 6th edition. Springer. 2017
Mathieu D. (Editor). Handbook on Hyperbaric Medicine. Springer Netherlands, 2006:691-765
Mathieu D, Marroni A, Kot J. Tenth European Consensus Conference on Hyperbaric Medicine: recommendations for accepted and non-accepted clinical indications and practice of hyperbaric oxygen treatment. Diving Hyperb Med. 2017 Mar;47(1):24-32.
Moon RE, Camporesi EM. Clinical Care in Extreme Environments: At High and Low Pressure and in Space. In: Miller´s anaesthesia, Miller RD. ed. Churchill Livingsstone, 2010;2485-2515
Moon R. (Editor). UHMS Hyperbaric Oxygen Therapy Indications 14th edition. North Palm Beach, FL: Best Publishing Company; 2019
Nasole E, Zanon V, Marcolin P, Bosco G. Middle ear barotrauma during hyperbaric oxygen therapy; a review of occurrences in 5,962 patients. Undersea Hyperb Med. 2019 Mar-Apr-May;46(2):101-106.
NFPA 99. Health Care Facilities Code. Chapter 14 Hyperbaric facilities. National Fire Protection Association, MA, USA. 2012
Ng AWA, Muller R, Orton J. Incidence of middle ear barotrauma in staged versus linear chamber compression during hyperbaric oxygen therapy: a double blinded, randomized controlled trial. Undersea Hyperb Med. 2017 Mar-Apr;44(2):101-107.
Plafki C, Peters P, Almeling M, Welslau W, Busch R. Complications and side effects of hyperbaric oxygen therapy. Aviat Space Environ Med. 2000 Feb;71(2):119-24.
Pougnet R, Pougnet L, Lucas D, Henckes A, Loddé B, Dewitte JD. Health effects of hyperbaric exposure on chamber attendants: a literature review. Int Marit Health. 2018;69(1):58-62.