Association of sick sinus and Lown-Ganong-Levine syndromes.
A 38-year-old woman presented with syncopal attacks for 27 years. The electrophysiology techniques which enabled the diagnosis of both sinus node dysfunction (sick sinus syndrome) and presence of an atrionodal bypass tract (Lown-Ganong-Levine syndrome) are illustrated.
D000328:Adult; D001146:Arrhythmia, Sinus / Q000150:complications* / Q000175:diagnosis; D004562:Electrocardiography; D005260:Female; D006801:Humans; D013577:Syndrome; D013614:Tachycardia, Paroxysmal / Q000150:complications* / Q000175:diagnosis