Carbon monoxide-induced atrial fibrillation resolved with hyperbaric oxygen.

Carbon monoxide (CO) exposure is a prevalent cause of poisoning worldwide. The cardiac effects of CO poisoning are well described and can manifest as angina, myocardial ischemia or infarction, cardiogenic shock, and/or life-threatening arrhythmias. Atrial fibrillation has been associated with severe CO poisoning; however, few cases have described atrial fibrillation in acute CO poisoning with regard to hyperbaric oxygen (HBO2) therapy. Herein, we describe a case of severe CO poisoning that caused atrial fibrillation with successful conversion to sinus rhythm following HBO2 therapy and discuss implications for further research.