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
Most commonly utilized Intercostal Space for Pericardiocentesis is: 
Select and explain. 
A. Left 5th Intercostal Space, B. Left 6th Intercostal Space, C. Right 5th Intercostal Space, D. Right 6th Intercostal Space
A: Left 5th Intercostal Space
Answer: A: Left 5th Intercostal Space 
Explanation: Answer is A (Left 5th Intercostal Space) Left Fifth Intercostal Space is the most commonly utilized space fir Parasternal Pericardiocentesis `There are various sites for aspiration but the two commonest sites used are the sub-xiphoid and the left fifth intercostal space. The sub-xiphoid approach is the much preferred route, as one can aspirate fluid even in the case of small effusions. This route is extra-pleural and avoids the coronary, pericardial, and internal mammary aeries.