The absence of ST segment depression in lead aVL predicts left circumflex artery-associated inferior wall acute infarction with positive predictive value of 82.6% and negative predictive value of 86.4%.

• aVL导ST段无明显下移对判断IRA为回旋支 (LCX)的阳性预测值为82 4%25 ,阴性预测值为 86 4%25。