This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: NEET Jan 2020, Subject name: Medicine
[{'content': 'Water-hammer pulse is seen in? \nSelect and explain. \nA. Mitral stenosis, B. Aoic regurgitation, C. Aoic stenosis, D. Pulmonary stenosis', 'role': 'user'}, {'content': "Answer: B \nExplanation: Corrigan's pulse /Water hammer pulse/Collapsing pulse | According to Frank Starling law, as end diastolic volume of LV increases, the force of contraction of LV increases. Seen on arm elevation above level of head. Collapsing pulse/Watson's water hammer pulse: Pulse is a bounding, forceful pulse with a rapid upstroke and descent. It is seen in the following situations: Physiological Fever Pregnancy Cardiac lesions Aoic regurgitation Patent ductus aeriosus Systolic hypeension Bradycardia Aoopulmonary window Aneurysm of sinus of Valsalva High-output states Anemia Cor pulmonale Cirrhosis of liver Beriberi Thyrotoxicosis Aeriovenous fistula Paget's disease Other causes Chronic alcoholism", 'role': 'assistant'}]