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患者,27岁,于80年5月15日入院。无何诱因出现心悸,胸闷一月,加剧10天,服用心得宁无效,过去头部有外伤史,无抽搐史。查:心界不大,律不齐,早搏,10～12次/分,心率76次/分,各膜瓣无杂音,血压100/60,肝脾未扪及。化验检查无异常。心电图:窦性心律;频发室性早搏。超声心动图、脑电图、胸片心脏大小均正常。入院后曾服用“慢心律”,800毫克/日,未能控制早搏;逐渐加大剂量至1.2克/日,疗效仍不满意;又静脉推注250毫克后,心律失常得以控制,但出现睡眠中
The patient, 27 years old, was admitted to hospital on May 15, No inducement of any heart palpitations, chest tightness in January, increased 10 days, taking the experience rather ineffective, the past history of head injuries, no history of convulsions. Check: little heart, regularity, premature beat, 10 to 12 beats / min, heart rate 76 beats / min, the membrane flap without noise, blood pressure 100/60, liver and spleen not palpable. Laboratory tests without exception. ECG: sinus rhythm; frequent premature ventricular contractions. Echocardiography, EEG, chest X-ray heart size were normal. Admitted to “slow heartbeat”, 800 mg / day after admission, failed to control premature beat; gradual increase in dose to 1.2 g / day, the effect is still not satisfied; and intravenous injection of 250 mg, arrhythmia can be controlled, in