inotropic action

例句：

1. 1. The inotropic action of the drug is to increase blood flow.
   这种药物的inotropic作用是增加血流。
2. 2. The researcher found that the inotropic action of the drug was not as effective as expected.
   研究人员发现，这种药物的inotropic作用并没有预期的那样有效。
3. 3. The inotropic action of the drug was tested on a group of patients with heart failure.
   这种药物的inotropic作用在一组患有心脏病的患者身上进行了测试。