一、现在常用的强心药 强心药(Cardiotonic Agents)指加强心肌收缩性的药物。很多药物具有加强心肌收缩力的作用,但由于正性肌力作用(正性变力作用)的选择性不高、作用微弱,或药物代谢动力学方面的问题而不适于应用。到本世纪七十年代为止,只有洋地黄类、儿茶酚胺类、嘌呤类和胰高血糖素具有不同程度的临床实用的地位。 二、强心药所应具备的作用谱 心力衰竭(心功能不全)时,外周的 First, now commonly used cardiac drugs cardiac drugs (Cardiotonic Agents) refers to enhance myocardial contractility drugs. Many drugs have the effect of enhancing myocardial contractility but are not suitable for use due to the low selectivity, weak action, or pharmacokinetic aspects of the inotropic (positive inotropic) effect. Until the seventies of this century, only digitalis, catecholamines, purines and glucagon have varying degrees of clinical utility. Second, the role of cardiac Drugs should have Spectrum heart failure (cardiac insufficiency), peripheral