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目的:探讨急性下壁心肌梗死(下壁AMI)时心电图胸前导联ST段压低的意义。方法:对61例下壁AMI患者(甲组37例,伴胸前导联ST段压低;乙组24例,不伴胸前导联ST段压低)的心电图及发病3个月内选择性冠状动脉造影结果对照分析。结果:①选择性冠状动脉造影显示冠状动脉病变(狭窄≥70%)支数在2组间的分布差异无统计学意义(P>0.05);②2组心功能表现差异有统计学意义(P<0.05)。结论:下壁AMI时心电图胸前导联ST段的压低与心功能不全有关,而与冠状动脉病变支数关系不大。
Objective: To investigate the significance of ST segment depression in the anterior chest lead of ECG in acute inferior myocardial infarction (inferior wall AMI). Methods: The electrocardiogram of 61 patients with AMI in the inferior wall (37 cases in group A with ST-segment depression in thoracic aorta, 24 cases in group B without ST-segment depression in thoracic aorta) and selective coronal Comparison of arterial angiography results. Results ① The distribution of coronary artery lesions (stenosis≥70%) showed no significant difference between the two groups (P> 0.05); ② The difference of cardiac function between the two groups was statistically significant (P < 0.05). Conclusion: The ST-segment depression of chest lead in inferior wall AMI is related to cardiac insufficiency, but not to the number of coronary lesions.