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患者男性,58岁,1987年11月10日突然发生心悸,到某医院就诊。心电图呈室上速(SVT)。经压迫眼球、颈动脉窦及静注西地兰等处理,SVT 持续不止,于15日转本院。体检无异常发现。曾于1981年11月及1987年7月两次描记心电图均呈 A 型预激征图形。入院次日进行食道心房调搏。基础图呈窦性心律,A 型预激征伴完全性右束支传导阻滞(CRBBB)。采用程控心房期前制激法,S_1S_2间期从500ms 开始,每次递减
Male patient, 58 years old, November 10, 1987 sudden heart palpitations, to a hospital. The electrocardiogram showed SVT. After the oppression of the eye, carotid sinus and intravenous cedilan and other treatment, SVT continued more than the transfer to the hospital on the 15th. No abnormal physical examination found. Had in November 1981 and July 1987 two tracing ECG showed a type A pre-ignition pattern. Admission the next day esophageal atrial pacing. Basic graph showed sinus rhythm, type A preexcitation with complete right bundle branch block (CRBBB). The program-controlled atrial pre-stress method was used. The S_1S_2 interval started from 500ms and decremented each time