Alternating Wolff-Parkinson-White (preexcitation) pattern.
An electrocardiogram is presented which shows sinus rhythm with alternating Wolff-Parkinson-White (preexcitation) pattern. The frequency of intermittent preexcitation and mechanisms for its production are discussed.
D000328:Adult; D004562:Electrocardiography; D005260:Female; D006801:Humans; D007744:Obstetric Labor Complications / Q000503:physiopathology; D011247:Pregnancy; D014927:Wolff-Parkinson-White Syndrome / Q000503:physiopathology*