This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Heart, Circulation, and Blood, Subject name: Physiology
Pressure volume loop is shifted to left side in 
Select and explain. 
A. Aortic regurgitation, B. Mitral regurgitation, C. Aortic stenosis, D. Congestive cardiac failure
C: Aortic stenosis
Answer: C: Aortic stenosis 
Explanation: Ans. (c) Aortic stenosis(Ref: Ganong, 25th ed/p.540)In aortic stenosis,PV loop is shifted to left sideVentricular systolic pressure increases to overcome the stenosisThere is increase in End systolic volumeStroke volume decreases