DIMOND E G, BENCHIMOL A
Calif Med. 1961 Mar;94(3):139-46.
In phonocardiography the second heart sound is important in appraisal of congenital heart disease and pulmonary hypertension because it reflects the duration of right ventricular systoles. The systolic murmur in patients with intracardiac shunt decreases as pulmonary hypertension develops, and may eventually disappear completely as the pulmonary pressure reaches systemic level. Reference tracings in phonocardiography are useful for showing the interrelationship of the various cardiac sounds and murmurs.
在心音图检查中,第二心音对于评估先天性心脏病和肺动脉高压很重要,因为它反映右心室收缩期的时长。心内分流患者的收缩期杂音会随着肺动脉高压的发展而减弱,当肺动脉压力达到体循环水平时,该杂音最终可能完全消失。心音图检查中的参考描记图有助于显示各种心音和杂音之间的相互关系。