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男,12岁。因发作性晕厥6年就诊。晕厥均发生在玩耍或看电视时,先述心里难受、头晕,继之晕厥,约1min后苏醒。曾诊断为(疒颓)痫,长期服苯妥英钠,发作明显减少。近一年,常频发心慌、胸闷,家族中无类似病人及耳聋者。体查、脉搏70次,血压100/70,听力好,心、肺、腹及神经系统未见异常。蹲立运动后心率90次/min。心电图示:频发室性早搏,呈二联律,140次/min。阿托品1.5mg静注后心率90次/min,无异位心律。24小
Male, 12 years old. Due to episodes of syncope 6 years treatment. Syncope occurred in the play or watch TV, the first heart uncomfortable, dizziness, followed by syncope, wake up after about 1min. Had diagnosed as (decadent decadent) epilepsy, long-term service phenytoin sodium, seizures significantly reduced. The past year, often frequent palpitation, chest tightness, no similar family members and deaf. Physical examination, pulse 70 times, blood pressure 100/70, good hearing, heart, lung, abdomen and nervous system without exception. After squatting exercise heart rate 90 times / min. ECG shows: Frequent ventricular premature beats, was two law, 140 beats / min. Atropine 1.5mg after intravenous injection of heart rate 90 beats / min, no ectopic rhythm. 24 small