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心电图左心导联中倒置 T 波是表示缺血还是左室肥厚常不能确定。长期以来的印象是,左室肥厚的倒置 T 波比缺血者较不对称,但未证实。本文用超声心动图测定左室肥厚和扩张的程度,用 T 波下降支夹角(a)与上行支夹角(b)的比率( T 波不对称率)来测定 T 波不对称的程度(见图1)。方法:A 组为28例 V_6导联 T 波倒置≥1毫米,
ECG left heart lead inverted T wave is that ischemia or left ventricular hypertrophy often can not be determined. It has long been the impression that inverted T waves of left ventricular hypertrophy are less symmetrical than ischemic but not confirmed. In this paper, the extent of left ventricular hypertrophy and dilatation was measured by echocardiography. The degree of T-wave asymmetry was determined by the ratio of T-wave falling angle (a) to the angle of ascending branch (T-wave asymmetry) see picture 1). Methods: A group of 28 cases of V_6 lead T wave inversion ≥ 1 mm,