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目的 探讨下壁急性心肌梗死 (AMI)左前分支阻滞 (LAHB)与冠脉病变的关系。方法 分析 71例下壁 AMI急性期病人的冠状动脉造影结果 ,比较出现或不出现 LAHB患者间冠脉病变的差异。结果 71例患者中 1 3例 (1 8 3% )在 AMI急性期出现 LAHB,与 58例不伴有 LAHB的患者比较 ,前者左前降支狭窄的发生率及多支冠脉病变的发生率均明显较高 (P<0 0 1 ) ,梗死相关动脉有更严重的残余狭窄 (P<0 0 5)。结论 下壁 AMI急性期出现 LAHB与冠脉病变有关 ,LAHB的出现提示患者有可能存在冠脉左前降支狭窄及多支冠脉病变。
Objective To investigate the relationship between left anterior branch block (LAHB) and coronary lesions in inferior wall acute myocardial infarction (AMI). Methods The results of coronary angiography in 71 patients with acute AMI in the inferior wall were analyzed and the differences of coronary lesions between patients with and without LAHB were compared. Results Thirty-three (18.3%) of the 71 patients had LAHB in the acute phase of AMI. Compared with 58 patients without LAHB, the incidence of left anterior descending coronary artery stenosis and the incidence of multiple coronary artery lesion Was significantly higher (P <0.01), infarct-related artery had more severe residual stenosis (P <0 05). Conclusions LAHB is associated with coronary lesion in acute AMI in the inferior wall. The appearance of LAHB suggests that there may be stenosis of left anterior descending coronary artery and multiple coronary lesions.