Reduction in contractility, the extent of ventricularcontraction and hence the amount of blood pumped from the ventricle when it contracts.
收缩力减弱，心室收缩程度减低，心室收缩时的泵血量减少。
2
Objective To study the relations between left ventricular band and cardiac murmur or premature ventricularcontraction and echocardiographic features.
目的研究左心室条束的二维超声心动图特征和左心室条束与心脏杂音及室性早搏的关系。
3
Objective To compare therapeutic effects of acupuncture and western medicine on silent heart failure (SHF) and investigate their effects on left ventricularcontraction function.