不同压缩狭窄程度症状性心肌桥病人临床基线资料差异及对定量血流分数的影响

Objective To analyze the differences in clinical baseline data of symptomatic myocardial bridge patients with different degrees of compression stenosis and their impact on quantitative blood flow fraction. Methods 200 patients with left anterior descending myocardial bridge confirmed by coronary angiography in our hospital from January 2021 to December 2023 were selected as the study subjects. They were divided into grade 1 group (n=120), grade 2 group (n=28), and grade 3 group (n=52) according to different degrees of stenosis. General information and quantitative blood flow scores were compared among the three groups. Results There was no statistically significant difference in age, gender, and prevalence of hypertension among the three groups (P＞0.05). there was a statistically significant difference in the indicators of muscle bridge associated lesions among the three groups (P＜0.05). There was a statistically significant difference in quantitative blood flow fraction indicators for different degrees of stenosis (P＜0.05). Conclusion Quantitative blood flow fraction evaluation based on coronary angiography has certain clinical significance for symptomatic myocardial bridging. It can provide reliable reference for clinical diagnosis and treatment.