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近年来用于临床的非洋地黄类新型强心剂,有儿茶酚胺与非儿茶酚胺两大类,现简介如下。一、儿茶酚胺类(一)多巴胺:为去甲肾上腺素的前体。剂量不同,作用各异。小剂量(2～5μg/kg/min)主要兴奋肾血管、脑血管及冠状动脉的多巴胺受体,引起上述脏器的血管扩张,尤其是肾血管扩张,可有显著的利尿作用;中剂量(6～15μg/kg/min)主要兴奋心肌的β_1受体,增强心肌收缩力,扩张
In recent years for the clinical non-digitalis new cardiac tonic, catecholamines and non-catecholamines are two categories are as follows. First, catecholamines (a) dopamine: norepinephrine precursors. Different doses, different effects. Small doses (2 ~ 5μg / kg / min) mainly excitated the dopamine receptors of renal, cerebrovascular and coronary arteries, causing vasodilatation of the above organs, especially the dilatation of renal vessels, which may have significant diuretic effects. 6 ~ 15μg / kg / min) is mainly excited myocardium β 1 receptor, enhance myocardial contractility, dilatation