晚期癌症病人常合并胸、腹水，引起电解质紊乱，特别是低血钾对心脏的损害，引起严重的心律失常。本文通过对20例晚期癌症病人的生化检验及心电图记录、观察，发现血钾过低时，室性早搏落于U波处与室性心动过速有关。1临资料1．1一般资料本组晚期癌症病人20例，男性门例，女性9 Patients with advanced cancer often have complications of chest and ascites, causing electrolyte disturbances, especially hypokalemia causing damage to the heart and causing severe arrhythmias. This article through the 20 cases of advanced cancer patients biochemical examination and ECG recording and observation, found that when the serum potassium is too low, the ventricular premature beat falls on the U wave and ventricular tachycardia related. 1 Pro-data 1.1 General Information 20 cases of advanced cancer patients in this group, male case, female 9