心包叩击音
心包叩击音(pericardial knock)是指在第二心音后约0.09~0.12s出现的响亮、短促的中频额外心音,在胸骨左缘容易闻及。是心包积液或心包增厚阻碍心室舒张,致使心室舒张过程骤然终止,导致室壁振动而产生的声音。
参考文献
- 陈文彬; 潘祥林. . 北京: 人民卫生出版社. 2008. ISBN 978-7-117-09501-3.
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