Abstract:Objective To investigate the application of 12 lead synchronous ambulatory electrocardiogram (Holter) in myocardial ischemia of myocardial bridge. Methods A total of 124 patients with myocardial bridge myocardial ischemia from January 2015 to June 2019 were selected as study objects.12 lead Holter was performed to record myocardial ischemia and prognosis. Results Among the 124 patients, 57 patients were diagnosed as single vessel disease (single lesion group) and 67 patients were multi vessel disease (multiple lesions group).The detection rate of myocardial ischemia was 85.2%.Compared with single vessel disease group, the detection rate, attack times, total duration and ST segment depression were higher in multi vessel group (P<0.05).The 12 lead Holter results showed that 96 cases of superficial myocardial bridge, 38 were deep myocardial bridge.The length of myocardial bridge was (19.26±3.76) mm, and the degree of myocardial bridge stenosis was (62.57±9.43)%.At the same time, there was significant difference between multiple lesions group and single disease group (P<0.05). Conclusion 12 lead Holter could evaluate myocardial ischemia of myocardial bridge patients directly and accurately, and 12 lead Holter has the characteristics of noninvasive and high safety.