[目的]探讨体表心电图对急性下壁心肌梗死(AIMI)梗死相关动脉(infarct related artery,IRA)的诊断价值。[方法]2005年1月—2011年6月初次确诊为急性下壁心肌梗死的患者432例,包括右冠状动脉闭塞组(RCA组)328例,左冠状动脉闭塞组(LCX组)...[目的]探讨体表心电图对急性下壁心肌梗死(AIMI)梗死相关动脉(infarct related artery,IRA)的诊断价值。[方法]2005年1月—2011年6月初次确诊为急性下壁心肌梗死的患者432例,包括右冠状动脉闭塞组(RCA组)328例,左冠状动脉闭塞组(LCX组)104例。对432例患者的体表心电图各项参数进行分析,并计算各项参数对预测梗死相关动脉的敏感性和特异性。[结果]STⅢ↑>STⅡ↑、STaVL↓≥0.1 mV且SaVL/RaVL>1/3对预测IRA为RCA的敏感性和特异性最高(分别为87.80%,87.80%和92.31%,92.31%);STⅢ↑<STⅡ↑对预测IRA为LCX敏感性和特异性最高(分别为92.31%和87.80%)。[结论]体表心电图可以初步预测急性下壁心肌梗死的梗死相关动脉,对临床治疗方案的决策有一定的指导作用。展开更多
Objectives: The aim of the study was to assess the role of ST segment depression in the limb leads aVR and aVL for the diagnosis of acute posterior wall infarction and the identification of infarct related artery (IRA...Objectives: The aim of the study was to assess the role of ST segment depression in the limb leads aVR and aVL for the diagnosis of acute posterior wall infarction and the identification of infarct related artery (IRA) in patients with acute inferior wall MI. Methods: In 159 patients with I-STEMI, 127 (80%) had RCA occlusion and 32 (20%) had LCX occlusion. In the ECG algorithms, RCA occlusion was indicated by ST depression in lead aVL higher than lead aVR and no ST depression in lead aVL and aVR. LCX occlusion was indicated by ST depression in lead aVR higher than or equal to lead aVL and no ST depression in aVL and aVR. Results: The sensitivity, specificity, positive and negative predictive values of these algorithms were high (98%, 82%, 92% and 95% for RCA occlusion and 83%, 98%, 95% and 92% for LCX occlusion). Conclusion: The ECG algorithms can reliably identify the culprit artery in I-STEMI. ST segment depression in limb leads aVR and aVL with avR ≥ aVL helps to diagnose left circumflex artery as a culprit IRA in an acute inferior wall MI.展开更多
文摘[目的]探讨体表心电图对急性下壁心肌梗死(AIMI)梗死相关动脉(infarct related artery,IRA)的诊断价值。[方法]2005年1月—2011年6月初次确诊为急性下壁心肌梗死的患者432例,包括右冠状动脉闭塞组(RCA组)328例,左冠状动脉闭塞组(LCX组)104例。对432例患者的体表心电图各项参数进行分析,并计算各项参数对预测梗死相关动脉的敏感性和特异性。[结果]STⅢ↑>STⅡ↑、STaVL↓≥0.1 mV且SaVL/RaVL>1/3对预测IRA为RCA的敏感性和特异性最高(分别为87.80%,87.80%和92.31%,92.31%);STⅢ↑<STⅡ↑对预测IRA为LCX敏感性和特异性最高(分别为92.31%和87.80%)。[结论]体表心电图可以初步预测急性下壁心肌梗死的梗死相关动脉,对临床治疗方案的决策有一定的指导作用。
文摘Objectives: The aim of the study was to assess the role of ST segment depression in the limb leads aVR and aVL for the diagnosis of acute posterior wall infarction and the identification of infarct related artery (IRA) in patients with acute inferior wall MI. Methods: In 159 patients with I-STEMI, 127 (80%) had RCA occlusion and 32 (20%) had LCX occlusion. In the ECG algorithms, RCA occlusion was indicated by ST depression in lead aVL higher than lead aVR and no ST depression in lead aVL and aVR. LCX occlusion was indicated by ST depression in lead aVR higher than or equal to lead aVL and no ST depression in aVL and aVR. Results: The sensitivity, specificity, positive and negative predictive values of these algorithms were high (98%, 82%, 92% and 95% for RCA occlusion and 83%, 98%, 95% and 92% for LCX occlusion). Conclusion: The ECG algorithms can reliably identify the culprit artery in I-STEMI. ST segment depression in limb leads aVR and aVL with avR ≥ aVL helps to diagnose left circumflex artery as a culprit IRA in an acute inferior wall MI.
