Differences in the T lope in males and females with angina pectoris

In cases with angina pectoris, the location and configuration of the T loop in a male group and a female group were compared. In the male group, the types of abnormal T loop were mainly an anterior displacement type (the AD type) and an abnormal shape type (the AS type). On the contrary, a posterior displacement type (the PD type) was found in most cases in the female group. The movement of the T loop after exercise test or exacerbation was also different in the two groups. In the male group, an anterior displacement or increase of W/L of the T loop was observed, but in the female group, the T loop was dislocated more to the left and posteriorly. The reason for these differences in the T loop in both groups is discussed.