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早在1952年Cabrera等人就试图根据心脏血流动力学状态研究左室增大的心电图表现.舒张期超负荷导致左室增大的心电图特征为:(1)V_6导联R波电压增高往往比收缩期超负荷者更明显,(2)V_6导联有明显的初始Q波,(3)V_6导ST段轻度凹面向上抬高,及(4)V_6导联T波呈对称性直立.本文进一步探讨不同病因引起左室舒张期超负荷的心电图特征.
As early as 1957, Cabrera et al attempted to study the electrocardiographic findings of left ventricular enlargement based on the hemodynamic status of the heart. The ECG characteristics of diastolic overload leading to left ventricular enlargement were as follows: (1) (2) V_6 lead with significant initial Q wave, (3) V_6 lead to slightly concave ST-segment upward elevation, and (4) V_6 lead T wave was symmetrical upright. This article further explores the different causes of left ventricular diastolic overload ECG characteristics.