| 单词 | Sounds,Cardiac |
| 释义 | Sounds,Cardiac《英文msh词典》Sounds,Cardiac [入口词] Sounds,Cardiac [主题词] Heart Sounds [英文释义] The sounds heard over the cardiac region produced by the functioning of the heart. There are four distinct sounds: the first occurs at the beginning of SYSTOLE and is heard as a lubb sound; the second is produced by the closing of the AORTIC VALVE and PULMONARY VALVE and is heard as a dupp sound; the third is produced by vibrations of the ventricular walls when suddenly distended by the rush of blood from the HEART ATRIA; and the fourth is produced by atrial contraction and ventricular filling. |
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