<prompt> Hypotension with muffled sounds and congested neck veins is seen in?Cardiac tamponadePericardial effusionConstrictive pericarditisAcute congestive heart failure  <response>: 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. 