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多巴胺的β_1选择性强,周围血管作用弱、选择性扩张内脏血管(尤其肾血管),较少增加心肌耗氧理,是较理想的强心及利尿剂。用于治疗晚期慢性心衰病人可显著改善低心输出量症状,防止扩血管药引起血压过度下降及产生明显利尿。强心—改善低心输出量症状心衰晚期,低心输出量多伴有外周阻力高。表现为收缩压减低、脉压窄,乏力、怠倦、汗多、肢体冷、尿少等。在难治性心衰阶段,尤为明显。此
Β - 1 selective dopamine, the role of peripheral blood is weak, selective expansion of visceral blood vessels (especially renal blood vessels), less increase myocardial oxygen consumption, is the ideal strength cardiac and diuretics. For the treatment of patients with advanced chronic heart failure can significantly improve the symptoms of low cardiac output to prevent vasodilators caused excessive drop in blood pressure and significant diuresis. Cardiac - to improve the low cardiac output late heart failure, low cardiac output associated with high peripheral resistance. Symptoms showed reduced systolic blood pressure, pulse pressure narrow, fatigue, fatigue, sweating, limb cold, oliguria and so on. In refractory heart failure stage, especially obvious. this