This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pericardial Disease, Subject name: Medicine
[{'content': 'Hypotension with muffled sounds and congested neck veins is seen in? \nSelect and explain. \nA. Cardiac tamponade, B. Pericardial effusion, C. Constrictive pericarditis, D. Acute congestive heart failure', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. (a) Cardiac TamponadeRef.: Harrison 18th edition, chapter 238Becks triad is a collection of three medical signs associated with acute cardiac tamponade, an emergency condition wherein fluid accumulates around the heart and impairs its ability to pump blood. The signs are:* Low arterial blood pressure* Distended neck veins* Distant, muffled heart sounds.Constrictive pericarditis can present with hypotension and congested neck veins but muffled heart sounds are not present.', 'role': 'assistant'}]