预激综合症的重要问题是并发快速性心律失常,临床上常见的是并发阵发性室上性心动过速,而并发房颤继而发展成室颤较少见,最近我们遇到1例,现报告于下。患者,男,37岁,农民。因阵发性心动过速2年,本次发作2天于87年6月27日入院。患者自述2年前无明显诱因突然发作心动过速,发作时胸闷、气促,持续3分钟自行缓解,以后间歇发作过2次,本次为第4次发作,持续2天余未能缓解,曾到当地卫生院诊治,心悸气促症状无改善,并感头昏、乏力、上腹部胀痛不适而转来我院。体验:T36.7℃、P64、R20、BP11.999/7.999Pa发育营养良好,神清,精神尚好,呼吸平,无紫绀,肺(一),心无音杂,心律绝对不齐,心音强弱快慢不等,心率124次/分,脉搏短促,肝剑下3指,右肋下2指,质中边钝,有压痛,肝颈静脉返流征(+),下肢无水肿。实验室检查:Hb120g/L、RBC4.25×10~12/L、WBC9.5×10~9/L,N60％、L40％、血钾3.6mmol/L、血钠124mmol/L、血 Wolff-Parkinson’s syndrome is an important issue is complicated by tachyarrhythmia, clinically common is paroxysmal supraventricular tachycardia, paroxysmal atrial fibrillation and then developed into ventricular fibrillation is rare, we recently encountered 1 case, The report is now under. Patient, male, 37 years old, farmer. Due to paroxysmal tachycardia 2 years, 2 days this episode in June 27, 1987 admission. Patient readme 2 years ago, no obvious incentive for sudden onset of tachycardia, chest tightness, shortness of breath, self-sustained 3 minutes to ease, after intermittent episodes 2 times, this is the fourth attack, sustained 2 days I failed to alleviate, Had to the local hospital for treatment, heart palpitations no improvement in symptoms of shortness of breath, and feeling dizzy, fatigue, abdominal pain and discomfort but transferred to our hospital. Experience: T36.7 ℃, P64, R20, BP11.999 / 7.999Pa development of good nutrition, clear spirit, the spirit is good, breathing flat, no cyanosis, lung (a), heart sound miscellaneous, Weak slow and slow, heart rate 124 beats / min, pulse short, 3 fingers under the liver and sword, 2 fingers under the right rib, the quality of the side of the blunt, tenderness, liver jugular reflux sign (+), lower extremity without edema. Laboratory tests: Hb120g / L, RBC4.25 × 10-12 / L, WBC9.5 × 10-9 / L, N60%, L40%, serum potassium 3.6mmol / L, serum sodium 124mmol / L, blood