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: Surgery
What is the treatment for Cardiac tamponade - 
Select and explain. 
A. Immediate anticoagulation, B. Emergency subxiphoid percutaneous drainage, C. Transesophageal pericardiocentesis, D. Stabilize and observe
B: Emergency subxiphoid percutaneous drainage
Answer: B: Emergency subxiphoid percutaneous drainage 
Explanation: Answer- B. Emergency subxiphoid percutaneous drainageEmergency subxiphoid percutaneous drainage -This is a life-saving bedside procedure. The subxiphoid approach is erapleural; hence, it is the safest for blind pericardiocentesis. A 16- or l8-gauge needle is inseed at an angle of 3O-45 degree to the skin, near the left xiphocostal angle, aiming towards the left shoulder. When performed emergently, this procedure is associated with a repoed moality rate of approximately 4% and a complication rate of l7%.