What Researchers Did
Researchers conducted a network meta-analysis of eight randomized controlled trials involving 1785 patients to compare normobaric oxygen (NBO) with different hyperbaric oxygen (HBO) protocols (one, two, or three sessions) for carbon monoxide poisoning.
What They Found
The analysis showed that HBO therapy was not more effective than NBO for improving outcomes in carbon monoxide poisoning. Specifically, two-session HBO appeared to increase general fatigue compared to NBO, and also led to higher rates of fatigue (risk ratio: 1.29), memory impairment (risk ratio: 1.80), and difficulty concentrating (risk ratio: 1.85) when compared to one-session HBO therapy.
What This Means for Canadian Patients
For Canadian patients experiencing carbon monoxide poisoning, this study suggests that hyperbaric oxygen therapy may not offer superior benefits compared to standard normobaric oxygen. Patients should discuss all available treatment options with their clinicians, especially considering potential side effects like increased fatigue or cognitive issues with multiple HBO sessions.
Canadian Relevance
This study covers carbon monoxide poisoning, which is a Health Canada-recognized indication for hyperbaric oxygen therapy. However, the study itself was not conducted by Canadian authors or institutions.
Study Limitations
The study's findings are based on a specific selection of eight randomized controlled trials, which may have had varying methodologies or limitations.