Early and late systolic murmurs also occur and should be distinguished from ejection murmurs 在收缩早期或晚期也会出现杂音,应与喷射音相区别。
2.
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(通常伴有收缩中期喀喇音)或主动脉瓣缩缝时听到。