Now in addition to systolic heart failure, you've also got diastolic heart failure, which is where the heart's squeezing hard enough but not filling quite enough.

除收缩性心衰外，还有舒张性心力衰竭，指的是心脏收缩功能正常，但是在舒张期充盈受损。

This can happen in two ways, either the heart's ventricles can't pump blood hard enough during systole, called systolic heart failure, or not enough blood fills the ventricles during diastole, called diastolic heart failure.

这可能以两种方式发生：一种是心室在心脏收缩期不能足够有力地泵出血液，即收缩性心力衰竭；另一种是在心脏舒张期心室充盈不足，即舒张性心力衰竭。

However because calcium is also involved in cardiac myocyte contraction, these agents also reduce contractility of the heart and should not be used in case of systolic heart failures.

然而，因为钙通道也参与了心肌收缩，所以这些药物也会减弱心脏的收缩力，因此收缩性心力衰竭患者不应该使用该类药物。

A normal ejection fraction is around 50-70%, between 40-50% would be borderline, and anything about 40% or less would indicate systolic heart failure because the heart is only squeezing out a little blood each beat.

正常的射血分数大约是在50-70％间，40-50％会是底线，任何低于40%的射血分数指示收缩性心力衰竭，也就是说在心脏在每次搏动中只输出了少量血液。