What Researchers Did
Researchers presented the case of a 69-year-old man who experienced a syncopal episode due to carbon monoxide poisoning.
What They Found
Upon admission, the patient's carboxyhemoglobin level was 10.5%, and his electrocardiogram showed a QTc interval of 622 msec. After treatment with hyperbaric oxygen, his QTc improved to 490 msec and carboxyhemoglobin decreased to 1.8% within 15 hours. This suggests a direct link between acute carbon monoxide poisoning and QTc prolongation, with resolution observed after hyperbaric oxygen therapy.
Canadian Relevance
This study was not conducted by Canadian authors or in Canada. However, carbon monoxide poisoning is a Health Canada-recognised indication for hyperbaric oxygen therapy.
Study Limitations
As a single case report, the findings of this study cannot be broadly applied to all patients with carbon monoxide poisoning.