心力衰竭的基本障碍是心肌收缩力减弱,致使心输出量不能满足肌体代谢和循环的需要。对心衰进行有效治疗的方法是用正性肌力药增强衰竭泵的收缩力,或用周围心管扩张药调节周围循环。使用兴奋心肌收缩力的药物治疗心衰具有很大价值。洋地黄类制剂是治疗心衰的标准疗法,同时是唯一口服有效的正性肌 The basic obstacle to heart failure myocardial contractility weakened, resulting in cardiac output can not meet the needs of the body metabolism and circulation. The effective treatment of heart failure is to use positive inotropic drugs to enhance the contraction force of the depletion pump, or use the peripheral cardio-dilation drugs to regulate the peripheral circulation. The use of drugs that stimulate cardiac contractility in the treatment of heart failure has great value. Digitalis is the standard treatment for heart failure and is the only orally active,