我院曾遇４例术前血钾正常，择期手术围手术期发生恶性室性心律失常的病人，最后均证实与低血钾有关。报道如下，并结合文献复习讨论其机理及有关临床问题。１临床资料４例均为接受择期手术病人，临床情况见表１。表１临床资料例序姓别年龄（岁）手术名称心律失常发生时间... Our hospital had 4 cases of preoperative serum potassium normal, perioperative elective surgery in patients with malignant ventricular arrhythmia, the last confirmed with hypokalemia. Reported below, combined with literature review to discuss the mechanism and related clinical problems. 1 clinical data 4 patients were undergoing elective surgery patients, the clinical situation in Table 1. Table 1 clinical data example name surname age (years) surgery name arrhythmia occurred time ...