This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Circulation: Arterial Pressure Regulation - Role of Kidney, Subject name: Physiology
Swan Ganz Catheter is used to measure - 
Select and explain. 
A. Mean arterial 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. is 'd' i.e., Pulmonary capillary wedge pressure o Swan Ganz catheter (pulmonary artery catheter) allows direct and simultaneous measurement of -i) Pulmonary capillary wedge pressure <left atrial pressure).ii) Right atrial pressure.iii) Right ventricular pressure.iv) Pulmonary' artery pressure.