What Researchers Did
This case report describes a 23-year-old pregnant woman who experienced severe unintentional carbon monoxide poisoning in her first trimester.
What They Found
The patient, at 11 weeks' gestation, was found unresponsive with an initial carboxyhemoglobin concentration of 47.1% after her vehicle's exhaust pipe was blocked by snow. She received emergent hyperbaric oxygen therapy and later delivered a full-term infant who was noted to have a persistently small head circumference.
Canadian Relevance
This study is a case report from outside Canada and does not have direct Canadian relevance.
Study Limitations
As a single case report, the findings cannot be generalized to the broader population of pregnant women exposed to carbon monoxide.