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房性奔马律(第四心音)的临床意义尚有争论。本文探讨在有负荷时出现的房性奔马律是否较静止时存在者更与左室功能的异常有关。作者使用了握拳试验(前臂持续的等长收缩)使左室有一急性的主要是压力的负荷,观察第四心音的存在或出现。
The clinical significance of room gallop (fourth heart sound) is still controversial. This article explores whether the presence of atrial arrhythmia during stress is more associated with abnormal left ventricular function than when resting. The authors used a fist test (sustained isometric contraction of the forearm) to have an acute, mainly stressful load on the left ventricle and to observe the presence or presence of the fourth heart sound.