This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Gorlins formula is used to calculate 
Select and explain. 
A. Area of stenotic aoic valve, B. Amount of daily calorie intake, C. Body mass index, D. Basal metabolic rate
A: Area of stenotic aoic valve
Answer: A: Area of stenotic aoic valve 
Explanation: Answer-A. Area of stenotic aoic valveThe stenotic valve orifice are is derived fromthe pressure gradient and cardiac output with the formula developed by Gorlin and Gorlin, which involves the fundamental hydraulic relationships, linking the a.ea of an orifice to the flow and pressure drop across the orifice.