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
Left atrial filling pressure closely approximates? 
Select and explain. 
A. Pulmonary capillary wedge pressure, B. Central venous pressure, C. Intrapleural pressure, D. Intracranial pressure
A: Pulmonary capillary wedge pressure
Answer: A: Pulmonary capillary wedge pressure 
Explanation: Answer is A (Pulmonary Capillary Pressure) Pulmonary Capillary Wedge Pressure (PCWP) Closely approximates Left Atrial (LA)Pressure