目的　探讨贲门癌切除术后心律失常的发生及危险因素。　方法　 2 43例贲门癌患者术后 2 4例发生心律失常 ,为心律失常组 ;其余 2 19例为无心律失常组。分析两组间差异 ,监测发生心律失常时的多项指标。　结果　年龄≥ 6 5岁、术前心电图异常、合并心肺疾病、手术时间≥ 4小时的贲门癌患者术后心律失常发生率明显增高。出现心律失常时的血氧饱和度为 0 .93± 0 .0 4。　结论　高龄、术前心肺功能异常、手术时间延长均是贲门癌术后发生心律失常的危险因素。及时纠正缺氧可能减少心律失常的发生。 Objective To investigate the incidence and risk factors of arrhythmia after cardiac resection. Twenty-two of 43 patients with cardia cancer developed arrhythmia after arrhythmia, and the remaining 219 patients without arrhythmia. Analyze the differences between the two groups and monitor multiple indicators of arrhythmias. Results The incidence of postoperative arrhythmia was significantly higher in patients with cardiac cancer ≥6 5 years, preoperative ECG abnormalities, cardiopulmonary diseases complicated with cardiac surgery ≥ 4 hours. Oxygen saturation at arrhythmia was .93 ± 0 .0 4. Conclusion The elderly, preoperative cardiopulmonary dysfunction, surgical time are cardiac arrhythmia risk factors. Timely correction of hypoxia may reduce the incidence of arrhythmia.