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目的回顾性分析急性下壁心肌梗死(IAMI)患者右冠状动脉(RCA)不同闭塞节段的心电图(ECG)差异,评估其应用价值,期望发现新的ECG预测标准。方法收集本院6年间符合标准的IAMI患者,对不同RCA闭塞节段的ECG特征进行比较分析。结果 58例患者,男性51例,女性7例,平均年龄65.00±13.61岁。ST_(V1)抬高≥0.5mm对提示RCA近段闭塞有显著的统计学意义(p=0.001)。ST_(V3)压低/ST_(Ⅲ)抬高比率<0.5、ST_(V4R)抬高在RCA近段组的出现率明显高于中远段组(80.95%vs.50.00%,p=0.058、91.67%vs.60.00%,p=0.191),但差异无统计学意义。结论 ST_(V1)抬高与否对判断急性下壁心肌梗死RCA闭塞节段具有良好的预测价值,若能联合STV3抬高/ST_(Ⅲ)压低比率以及ST_(V4R)抬高与否做共同分析,将进一步提高诊断的灵敏度和特异性。
Objective To retrospectively analyze the difference of electrocardiogram (ECG) in different occlusion segments of right coronary artery (RCA) in patients with acute inferior myocardial infarction (IAMI) and to evaluate its value in the hope of finding a new ECG prediction standard. Methods The patients with IAMI who met the criteria of our hospital for 6 years were collected and compared with the ECG characteristics of occlusion segments of different RCA. Results 58 patients, 51 males and 7 females, with an average age of 65.00 ± 13.61 years. The elevation of ST_ (V1) ≥0.5mm was found to have significant statistical significance for the proximal occlusion of RCA (p = 0.001). ST_ (V3) depression / ST_ (Ⅲ) elevation rate <0.5, ST_ (V4R) elevation in the proximal RCA group was significantly higher than in the distal group (80.95% vs.50.00%, p = 0.058,91.67% vs.60.00%, p = 0.191), but the difference was not statistically significant. Conclusions The elevation of ST_ (V1) is a good predictor of RCA occlusion in acute inferior myocardial infarction. If combined with STV3 elevation / ST_ (Ⅲ) depression and ST_ (V4R) elevation or not, Analysis, will further improve the diagnostic sensitivity and specificity.