title: Sinus node function and dysfunction.
abstract: The wide range of normal sinus node function makes identification of dysfunction difficult. Emphasis is placed upon real time correlation of ECG bradyarrhythmia with typical symptoms. A spectrum of atrial electrical dysfunction is described which includes abnormalities of the sinus and AV nodes as well as failure of escape pacemakers and atrial tachyarrhythmias.
mesh_terms: D000293:Adolescent; D000328:Adult; D001283:Atrioventricular Node / Q000503:physiopathology; D001919:Bradycardia / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology*; D002648:Child; D004562:Electrocardiography; D004594:Electrophysiology; D006325:Heart Atria / Q000503:physiopathology; D006339:Heart Rate / Q000187:drug effects; D006801:Humans; D008297:Male; D012016:Reference Values; D012018:Reflex / Q000502:physiology; D012849:Sinoatrial Node / Q000187:drug effects / Q000502:physiology*; D013610:Tachycardia / Q000175:diagnosis / Q000209:etiology / Q000503:physiopathology; D013997:Time Factors; D014630:Vagus Nerve / Q000502:physiology