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临床资料及心内电生理检查患者男性,50岁。因反复发作性头晕、黑矇二个月,于1990年5月14日入院。体检、超声心动图、X线胸片无异常发现。ECG示:窦性心律过缓,偶见房性早搏。阿托品试验(1mg)最快心率70次/分。Holter最慢心率46次/分,最快心率110次/分,房早7850次/24小时。活动平板(-)。临床诊断:窦房结功能低下,频发房性早搏,心电生理检查,窦房结恢复时间1330ms,窦房传导时闻75ms,文氏点170次/分,2∶1房室阻滞点200次/分。希氏束导管近端记录A-H85ms,H15ms,H-V40ms;远端记录到右束支图形(见附图IE_1),其距V波20ms,提示窦房结、房室结功能正常。高位右心房(HRA)程序刺激(见图1E_3),当S_1S_1500ms,S_1S_2370ms
Clinical data and electrophysiology in patients with male patients, 50 years old. Due to recurrent dizziness, darkness two months, was admitted to hospital on May 14, 1990. Physical examination, echocardiography, X-ray no abnormal findings. ECG showed: sinus rhythm bradycardia, occasionally atrial premature beats. Atropine test (1mg) the fastest heart rate 70 beats / min. Holter’s slow heart rate 46 beats / min, the fastest heart rate 110 beats / min, room 7878 times / 24 hours. Activity plate (-). Clinical diagnosis: sinus node dysfunction, frequent atrial premature beats, electrophysiological examination, sinus node recovery time 1330ms, sinoatrial conduction when heard 75ms, Wen’s point 170 beats / min, 2: 1 atrioventricular block point 200 beats / min. His bundle tube recorded A-H85ms, H15ms, and H-V40ms at the proximal end of the bundle; the right bundle branch pattern was recorded at the distal end (see the attached image IE_1), which was 20ms away from the V wave, suggesting sinus node and atrioventricular node function. High right atrium (HRA) program to stimulate (see Figure 1E_3), when S_1S_1500ms, S_1S_2370ms