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
Swan Ganz Catheter is used to measure: September 2005 
Select and explain. 
A. Mean aerial pressure, B. Cardiac output, C. Blood volume, D. Pulmonary capillary wedge pressure
D: Pulmonary capillary wedge pressure
Answer: D: Pulmonary capillary wedge pressure 
Explanation: Ans. D: Pulmonary capillary wedge pressure Swan Gann Catheter is a long, thin cardiac catheter with a tiny balloon at the tip. It is used to determine left ventricular function by measuring pulmonary capillary wedge pressure.