This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
Wide pulse pressure is seen in- 
Select and explain. 
A. Aoic regurgitation, B. PDA, C. MR, D. AS
A: Aoic regurgitation
Answer: A: Aoic regurgitation 
Explanation: The aerial pulse pressure is widened as a result of both systolic hypeension and a lowering of the diastolic pressure. The measurement of aerial diastolic pressure with a sphygmomanometer may be complicated by the fact that systolic sounds are frequently heard with the cuff completely deflated. As the disease progresses and the LV end-diastolic pressure rises, the aerial diastolic pressure may actually rise as well, because the aoic diastolic pressure cannot fall below the LV end-diastolic pressure. For the same reason, acute severe AR may also be accompanied by only a slight widening of the pulse pressure. Such patients are invariably tachycardic as the hea rate increases in an attempt to preserve the CO ( Harrison&;s principle of internal medicine,18th edition,pg no.1944 )