Carbon monoxide (CO)poisoning is a rare cause of QT prolongation, and is therefore easily missed. The case of a patient with unexplained syncope and QT prologation on the electrocardiogram that turned out to be related to CO poisoning is reported here. In patients with QT prolongation, uncommon causes also should be looked for.

dx.doi.org/10.1136/adc.2006.094193, hdl.handle.net/1765/35556
Archives of Disease in Childhood: an international peer-reviewed journal for health professionals and researchers covering conception to adolescence
Erasmus MC: University Medical Center Rotterdam

Onvlee-Dekker, I.M, de Vries, A.C.H, & ten Harkel, A.D.J. (2007). Carbon monoxide poisoning mimicking long-QT induced syncope. Archives of Disease in Childhood: an international peer-reviewed journal for health professionals and researchers covering conception to adolescence, 92(3), 244–245. doi:10.1136/adc.2006.094193