患者女性,100岁。自1988年7月始出现短暂意识丧失,发作时脉搏30～40次/min,不齐,几秒钟即缓解。1989年7月15日突然意织丧失、四肢抽搐,脉搏停5s,其后有类似发作,24小时心电监测:Ⅱ度Ⅱ型窦房阻滞伴高度房室传导阻滞,RR间期最长6s,其间有效个P波不能下传至心室(见附图A),心率29～65 Patient female, 100 years old. Since July 1988 there was a brief loss of consciousness, attack pulse 30 to 40 times / min, missing, a few seconds to ease. July 15, 1989 a sudden loss of intestine, convulsions of the limbs, the pulse stopped 5s, followed by a similar attack, 24-hour ECG monitoring: Ⅱ degree Ⅱ type of sinoatrial block with a high degree of atrioventricular block, RR interval Long 6s, during which an effective P wave can not be downloaded to the ventricle (see Figure A), heart rate 29 ~ 65