What Researchers Did
Researchers analyzed whether serum lactate and carboxyhemoglobin levels at emergency department presentation could predict which CO-poisoned patients would require HBOT, using data from 292 patients.
What They Found
Higher initial lactate levels were strongly predictive of HBOT requirement, while carboxyhemoglobin alone was a weaker predictor. A combined lactate and carboxyhemoglobin model improved triage accuracy compared to either marker alone.
What This Means for Canadian Patients
Canadian emergency departments receive CO poisoning patients particularly in winter months. Better biomarker-based triage tools could help physicians rapidly identify which patients need urgent transfer to a hyperbaric facility.
Canadian Relevance
Covers an OHIP-covered indication: carbon monoxide poisoning. Ontario emergency physicians can apply these triage findings when determining HBOT eligibility for CO-poisoned patients.
Study Limitations
Retrospective single-centre data and variation in CO poisoning severity limit external validity of the predictive model.