Abstract:Objective To observe the ECG changes of patients with congenital heart disease(CHD) after thoracotomy and investigate the reasons. Methods One hundred cases were selected from postthoracotomy CHD patients who had been admitted in our hospital from December 2013 to December 2014. Before the operation, no abnormal ECG change was observed besides atrioventricular hypertrophy. The ECG changes one week and three months after thoracotomy were observed and comparatively analyzed. Results ECG changes one week and three months after the operation were mainly right bundle branch block and STsegment elevation with acute injury changes. If the frequency of the two kinds of ECG changes one week and three months after thoracotomy was compared separately, the difference was both statistically significant. The post-operation ECG changes were related to surgical procedures, operative sites, cardiac reperfusion, etc. Conclusion In the re-examination of post-thoracotomy CHD patients, ECG is a good non-invasive adjuvant diagnostic method.