What Researchers Did
Doctors reported a patient in a coma from carbon monoxide poisoning who had unusual ECG changes that turned out to signal a stroke in the brain, and was successfully treated with HBOT.
What They Found
The patient had been exposed to CO for 24 hours before arriving at hospital in a coma. ECG showed an abnormal cerebral T-wave pattern, and MRI confirmed a cerebral infarction (stroke) caused by CO poisoning. After treatment with medications and HBOT, the patient made a full recovery.
What This Means for Canadian Patients
For Canadians who survive carbon monoxide poisoning, a risk in winter from faulty furnaces, generators, or fires, this case highlights that brain damage can occur even when cardiac symptoms seem to dominate. HBOT is the primary treatment for serious CO poisoning. The unusual ECG findings described here may help Canadian emergency doctors detect brain injury earlier in CO patients.
Canadian Relevance
Carbon monoxide poisoning is an OHIP-covered indication for HBOT in Ontario.
Study Limitations
This is a single case report and cannot establish how often cerebral T-wave changes predict stroke in CO poisoning patients.