Role of autonomic regulatory mechanism in sinoatrial conduction and sinus node automaticity in sick sinus syndrome.
D000368:Aged; D001341:Autonomic Nervous System / Q000503:physiopathology*; D002304:Cardiac Pacing, Artificial; D004594:Electrophysiology; D006329:Heart Conduction System / Q000503:physiopathology*; D006339:Heart Rate; D006801:Humans; D008297:Male; D008875:Middle Aged; D012804:Sick Sinus Syndrome / Q000503:physiopathology*; D012849:Sinoatrial Node / Q000503:physiopathology*; D013997:Time Factors