What Researchers Did
Researchers conducted a selective literature search in PubMed and Cochrane databases, along with reviewing existing international guidelines and expert recommendations, to summarize the diagnosis and treatment of carbon monoxide poisoning.
What They Found
They found that initiating 100% oxygen breathing as early as possible is the most important treatment for carbon monoxide poisoning. Hyperbaric oxygen therapy (HBOT) should be critically considered and initiated within six hours for patients with neurologic deficits, unconsciousness, cardiac ischemia, pregnancy, or very high carboxyhemoglobin concentrations, although there is currently no general recommendation for HBOT due to heterogeneous evidence.
What This Means for Canadian Patients
Canadian patients suspected of carbon monoxide poisoning should receive 100% oxygen breathing as quickly as possible. Healthcare providers should consider hyperbaric oxygen therapy for severe cases within six hours, weighing the patient's specific symptoms and the current evidence.
Canadian Relevance
This study has no direct Canadian connection.
Study Limitations
A limitation is the heterogeneous state of evidence for hyperbaric oxygen therapy, which prevents a general recommendation for its use.