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血管扩张剂已广泛使用于慢性充血性心衰的治疗。较早的研究证实此类药物能迅速改善左心室机能及左心衰的症状。如肼苯达嗪已广泛使用于左心哀,而长期治疗其血液动力学作用是持久的,无耐药性发生。Fitchetl等比较了快速静注及长期口服胼苯达嗪治疗左心衰的效果,其中有数名高血压心衰及重度二尖瓣回流伴左心衰病人,静注
Vasodilators have been widely used in the treatment of chronic congestive heart failure. Earlier studies confirmed that such drugs can rapidly improve left ventricular function and left heart failure symptoms. Hydralazine, for example, has been widely used in left heart sadness, and long-term treatment of its hemodynamic role is durable, non-drug-resistant. Fitchetl et al compared rapid intravenous and long-term oral administration of pyrethrazine in the treatment of left heart failure, including several hypertensive heart failure and severe mitral regurgitation with left heart failure, intravenous