cardiac sounds

• 心音

cardiac sounds的用法和样例：

例句

1. The heart sounds are muffled when the pericardial sac is distended with fluid.
   当心包充满液体时心音减弱。
2. Analyzing the rules of S1 variability and cardiac contractility variability may have practical linical value.It is worth to study further.
   研究和分析第一心音幅值和心肌收缩能力的变异性可能有重要的临床应用价值，值得进一步研究。