变力性

结果表明：右室dp/dtmax和Vpm对变力性因素最敏感，但也受到心脏负荷变化的明显影响，其余右室指标或不敏感或变异很大。

The dp / dt max and Vpm were very sensitive to the inotropic factor , but were greatly influenced by the change of the myocardial load .

变力性一词通常用来描述心肌收缩性的变化。

The term inotropic is commonly used in discussing changes in myocardial contractility .

钙增敏剂的作用机制及其变力性作用

Positive Inotropic Effect of Calcium Sensitizers and Mechanisms

研究背景：临床上处理失代偿的心力衰竭病人，需要应用正性变力性药物改善血流动力学紊乱，但是目前所有变力性药物对心肌的舒张功能均无明显改善作用。

Background : Positive inotropic agents are an efficacious drug in the short-term treatment of patients with severe left ventricular dysfunction and decompensated HF ( heart failure ) .

人体肩关节屈伸肌群等动向心、等动离心、等长收缩肌力的研究变力性一词通常用来描述心肌收缩性的变化。

Research on the Isokinetic Concentric , Eccentric and Isometric Strength of Young Adults Shoulder Flexor and Extensor ; The term inotropic is commonly used in discussing changes in myocardial contractility .

理论上讲，如果激动心肌Na+-Ca2+交换（包括前向和反向）将同时有助于心肌的收缩和舒张，并有可能成为改善心肌变力性的新途径。

Theoretically , an increase in the activity of Na + - Ca2 + exchange , including forward-mode and reverse-mode , may promote the cardiac function of both contraction and relaxation and provides a pathway to affect the cardiac performance .

结论高浓度川芎水煎剂对离体大鼠心脏有负性变力和负性变时作用，并可使CF降低；

CONCLUSION The results indicated that LCH decoction of high concentration has obvious negative inotropic action and can increase CF obviously ;

结论SK对离体大鼠心脏有正性变力及负性变时效应，并可使灌注压降低。

Conclusions The results showed that SK induces positive inotropic and negative chronotropic response accompanying the decrement of PP.

力场的扰动要引起位移场的变化或者说变分。变力性一词通常用来描述心肌收缩性的变化。

Perturbations of the force field will cause changes , or variations , of the displacement field . The term inotropic is commonly used in discussing changes in myocardial contractility .