Late systolic murmurs begin in midsystole and extend to or through S2. They may be heard in mitral valve prolapse( frequently accompanied by midsystolic clicks) or coarctation of the aorta. 收缩期晚期杂音始于收缩期中期,延至或贯穿S2。可在二尖瓣脱垂(常伴有收缩中期喀喇音)主动脉瓣缩缝时听到。
coarctation
[ noun ]
tight or narrow compression
<noun.event>
(biology) a narrowing or constriction of a vessel or canal; especially a congenital narrowing of the aorta
<noun.attribute>
Coarctation \Co`arc*ta"tion\, n. [L. coarctatio.] 1. Confinement to a narrow space. [Obs.] --Bacon.
2. Pressure; that which presses. [Obs.] --Ray.
3. (Med.) A stricture or narrowing, as of a canal, cavity, or orifice.