Lee C H, Xiao H B, Gibson D G
Cardiac Department, Royal Brompton and National Heart Hospital, London, UK.
Cardiology. 1990;77(5):340-5. doi: 10.1159/000174623.
We describe a previously unrecognised cause of an added diastolic heart sound. The patient had first-degree heart block and diastolic tricuspid regurgitation, leading to presystolic closure of the tricuspid valve and the production of a loud diastolic sound. Unlike previously described mechanisms for diastolic sounds, this sound was generated by the sudden acceleration of retrograde AV flow in late diastole.
我们描述了一种先前未被认识到的舒张期心音增强的原因。该患者患有一度房室传导阻滞和舒张期三尖瓣反流，导致三尖瓣在收缩前期关闭，并产生响亮的舒张期声音。与先前描述的舒张期声音机制不同，这种声音是由舒张期末期逆行房室血流的突然加速产生的。
