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患者女性,38岁。因阵发性心悸、胸闷、头晕10余年于1991年5月28日就诊。体检:Bp14.6/10.6kPa(110/80mmHg),心界不大,心率63次/分,律齐,未闻及病理性杂音。X线、超声心动图及心电图检查无异常。为明确原因行食管心房程序电刺激检查:S_1S_1为700ms,S_1S_2从650ms开始以10ms为步长递减反扫,当S_1S_2为530ms时,S_2R为230ms,而S_1S_2缩短为520ms时,S_2R跳跃延长至310ms,S_2R间差为80ms,提示房室结双径路传导。下行为分级递增起搏,S_1S_1为520ms,S-R间期逐搏延长至P波后QRS波脱漏,且呈周期性变化。值得注意的
Patient female, 38 years old. Due to paroxysmal palpitations, chest tightness, dizziness more than 10 years in May 28, 1991 treatment. Physical examination: Bp14.6 / 10.6kPa (110 / 80mmHg), heart is not, heart rate 63 beats / min, law Qi, no smell and pathological murmur. X-ray, echocardiography and ECG without abnormalities. For the reason of esophageal atrial electrical stimulation, S_1S_1 was 700ms, S_1S_2 decreased gradually from 650ms to 10ms, and S_2R was 230ms when S_1S_2 was 530ms, and 310ms when S_1S_2 was shortened to 520ms. , S_2R interval of 80ms, suggesting atrioventricular node dual pathway conduction. The next step was to increase the pace of pacing, S_1S_1 was 520ms, S-R interval strokes extended to P wave QRS wave leakage, and showed periodic changes. worth taking note of