Sinus node function and dysfunction.
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.
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