三种体表心电图指标对判断急性下壁心肌梗死时心肌梗死相关动脉的意义Significance of three electrocardiographic indexes in predicting the myocardial infarct-related artery in inferior wall of acute myocardial infarction
程秀琴,马涵英,周玉杰,宋劼
摘要(Abstract):
目的 探讨急性下壁心肌梗死时三种体表心电图指标对判断心肌梗死相关动脉的意义。方法 对 12 0例急性下壁心肌梗死患者的三种体表心电图指标和冠状动脉造影资料进行对比分析。结果 (1)心肌梗死相关动脉为右冠状动脉共 98例 (81 7% ) ,左回旋支 2 2例 (18 3 % )。 (2 )Ⅰ导联ST段有压低提示右冠状动脉闭塞的敏感性为 77 6 % ,特异性为 90 9% ,Ⅰ导联ST段无压低提示左回旋支闭塞的特异性为 77 6 % ,敏感性为 90 9% ,故Ⅰ导联有无ST段压低可作为判断下壁心肌梗死相关动脉的一个指标。 (3)aVL导联S/R≥ 1/ 3对于预测RCA为下壁心肌梗死相关血管的敏感性为93 9% ,特异性为 6 3 6 %。 (4)右冠状动脉无论是近段、中段和远段的病变 ,ST段抬高幅度Ⅲ≥Ⅱ导联的病例数与非Ⅲ≥Ⅱ导联的病例数存在显著差异 ,而左冠状动脉回旋支组无显著差异。结论 导联ST段压低、aVL导联QRS波群以及Ⅲ和Ⅱ导联ST段抬高幅度的不同变化对判断下壁心肌梗死相关血管有重要的预测意义。
关键词(KeyWords): 心电图;下壁心肌梗死;冠状动脉造影
基金项目(Foundation):
作者(Author): 程秀琴,马涵英,周玉杰,宋劼
参考文献(References):
- 1HerzL ,AssaliA ,AdlerY ,etal.Newelectrocardiographiccriteriafordetectingtherightorleftcircumflexarteryastheculpritcoronaryarteryininferiorwallacutemyocardialinfarction.AmJCardiol,1997,80:1343.
- 2HasdaiD ,BirnbaumY ,HerzI ,etal.STsegmentdepressioninlaterallimbleadininferiorwallacutemyocardialinfarction.Implicationregardingtheculpritarteryandthesiteofobstruction.EurHeartJ ,1995,16:1549.
- 3BirnbaumY ,HaleSI,KlonerRA ,etal.ChangesintheRwaveamplitude:eletrocardiographicdifferentiationbetweenepisodesofreocclusionandreperfusionassociatedwithSTsegmentelevation.JEletrocardiol,1997,30:211.
- 4ZimetaumPJ ,KrishnanS ,GoldA ,etal.UsefulnessofST segmentelevationinleadⅢexceedingthatofleadⅡforidentifyingthelocationofthetotallyoccludedcoronaryarteryininferiorwallmyocardialinfarction.AmJCardiol,1998,81:918919.