Victor M F, Mintz G S, Kotler M N, Parry W R, Wilson A R
Arch Intern Med. 1981 Feb;141(2):255-7.
A midsystolic click occurred in a patient with a type 1 dissecting aneurysm. The mechanism of production of the systolic click may be related to rapid deceleration of blood against the intimal flap. Combined phonocardiography and echocardiography (using a new second right intercostal space approach) proved to be helpful in differentiating this sound from an aortic and pulmonary ejection click. In addition, other causes of midsystolic clicks, such as mitral and tricuspid valve prolapse, were excluded.
一名患有1型夹层动脉瘤的患者出现了收缩中期喀喇音。收缩期喀喇音的产生机制可能与血液冲击内膜瓣时的快速减速有关。联合心音图和超声心动图（采用新的右第二肋间间隙方法）被证明有助于将这种声音与主动脉和肺动脉喷射性喀喇音区分开来。此外，还排除了收缩中期喀喇音的其他原因，如二尖瓣和三尖瓣脱垂。
