What Researchers Did
Researchers retrospectively reviewed medical records of 47 children under 19 years old treated with hyperbaric oxygen therapy for carbon monoxide poisoning at a referral center between 2008 and 2013.
What They Found
The study included 47 children with a mean age of 8.9 years and a mean carboxyhemoglobin (COHb) level of 14.3%. They found no correlation between symptom severity and COHb levels, but neurologic symptoms were more common in patients with COHb levels over 25%. Additionally, increasing age correlated with higher COHb levels, as did COHb and lactate levels.
What This Means for Canadian Patients
Canadian clinicians treating pediatric carbon monoxide poisoning should be aware that carboxyhemoglobin levels may not directly correlate with symptom severity, especially for neurologic symptoms. This suggests that clinical presentation, rather than just COHb levels, should guide treatment decisions for children exposed to carbon monoxide.
Canadian Relevance
This study was conducted in a regional hyperbaric referral center outside of Canada, therefore it has no direct Canadian connection.
Study Limitations
The retrospective design of this study, relying on existing medical records, may limit the generalizability and completeness of the collected data.