cardiac second output

例句：

1. 1. The heart's second output is crucial for maintaining bloodpressure.
   心脏的第二输出量对于维持血压至关重要。
2. 2. The doctor monitored the patient'scardiac second output during the surgery.
   医生在手术期间监测了患者的心脏第二输出量。
3. 3.The researcher found that the cardiac secondoutput was significantly reduced in patients with heartfailure.
   研究者发现，患有心脏病的患者心脏第二输出量显著减少。