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患者女性,58岁。心动过缓伴有头晕、目眩等症状十余年,为查明原因于1989年5月29日入院。心电图示Ⅱ°窦房阻滞,心率约45/min,电生理检测示A-H间期80ms,H-V间期45ms,经股静脉插入双极导管电极行高位右房调搏,开始用比原基础窦性心率快20/min的频率调搏1min,当调搏频率达到140/min,最长SNRT为3600ms,接着用Narula连续刺激法测定SACT间期为220ms。临床诊断:病窦综合征。置入VVI型起搏器。上述症状好转出院。2年后上述症状突然明显加重一周而再次住
Patient female, 58 years old. Bradycardia accompanied by dizziness, dizziness and other symptoms more than ten years, to identify the cause in May 29, 1989 admission. Electrocardiogram showed sinoatrial block Ⅱ ° heart rate, heart rate about 45 / min, electrophysiological examination showed AH interval 80ms, HV interval 45ms, the femoral vein bipolar catheterization of high right atrial pacing, began to use the original sinus Sex heart rate fast 20 / min pacing 1min, when the pacing frequency reaches 140 / min, the longest SNRT 3600ms, followed by Narula continuous stimulation SACT interval was 220ms. Clinical diagnosis: sick sinus syndrome. Into the VVI pacemaker. The symptoms improved discharged. Two years later, the symptoms suddenly increased significantly one week and live again