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患者男性,65岁,近2年来发作性心动过速3次,最长1次持续3h,发作时自测心率190~+次/min,无心电图记录。体检及X 线胸片未见异常。于1986年11月7日作食道心房调搏检查。调搏前心电图为窦性心律,A 型预激征。检查过程中电刺激诱发室上速共7次,其中2次为短阵快速脉冲诱发,5次为 S_1S_2扫描诱发。心动过速频率为180次/min,第1个 PR0.24s,QRS 形态正常。PⅠ、Ⅱ、Ⅲ负向,P_(aVR)正向。PR/RP>1,RP135ms,P_E-P_(V_1) 35ms,符
Male patient, 65 years old, in the past 2 years, the onset of tachycardia 3 times, a maximum of 1 sustained 3h, onset of heart rate 190 ~ + times / min, no ECG records. Physical examination and X-ray showed no abnormalities. November 7, 1986 for esophageal atrial pacing examination. ECG before pacing sinus rhythm, A pre-excitation. In the process of examination, the supraventricular tachycardia induced by electrical stimulation was totally 7 times, of which 2 were induced by bursts and 5 were induced by S 1 S 2 scans. Tachycardia frequency of 180 beats / min, the first PR0.24s, QRS morphology is normal. PⅠ, Ⅱ, Ⅲ negative, P_ (aVR) positive. PR / RP> 1, RP135ms, P_E-P_ (V_1) 35ms, sign