The following graph is a depiction of the Starling curve showing the relationship between
cardiac output and ventricular end diastolic volume in a patient with congestive heart failure. If this patient is treated with a positive inotropic agent, the Starling curve would do which of the following?
下图是充血性心力衰竭患者心排血量与心室舒张末期容积之间关系的Starling 曲线。如果这个病人用正性肌力药治疗,Starling 曲线会是以下哪一个?
(A) Flatten out 变平
(B) Shift down and left 向下向左平移
(C) Shift down and right 向下向右平移
(D) Shift right only只向右平移
(E) Shift up and left向上向左平移
(F) Shift up and right向上向右平移
答案解析:
正性肌力剂会增加心脏的收缩力,导致在任何给定的舒张末期容量下,每搏量和心排血量都增加。因此曲线会向上向左平移。
正确答案:E
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