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新近的研究证明,血管扩张药可用于急性或慢性左心衰竭病人。通过降低体循环血管阻力,引起左室内舒张末期容量和收缩末期容量的减少,并增进心搏量和心排血量。左室功能倉不正常,体循环血管阻力的降低和心搏出量上升就愈大,由体循环血管阻力下降引起的动脉压下降就愈小。大多数血管扩张药通过一种外周静脉的容量增加,也产生不同程度的静脉郁血。外周静脉之郁血导致左室舒张末期容
Recent studies have shown that vasodilators can be used in patients with acute or chronic left heart failure. By reducing systemic vascular resistance, causing a decrease in left ventricular end-diastolic volume and end-systolic volume, and increasing stroke volume and cardiac output. Left ventricular function compartment is not normal, systemic vascular resistance decreased and increased cardiac output is greater, decreased systemic vascular resistance caused by decreased arterial pressure is smaller. Most vasodilators increase the volume of a peripheral vein and also produce varying degrees of venous bleed. The peripheral venous blood lead to left ventricular end-diastolic volume