system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Kussmaul's sign is not seen in: September 2010
assistant
The correct answer is  Ans. D: Cardiac tamponade Possible causes of Kussmaul's sign include: Constrictive pericarditis Restrictive cardiomyopathy Pericardial effusion Right ventricular infarction Right hea failure Cardiac tumours Tricuspid stenosis With Cardiac tamponade, KS is absent (lack of inspiratory decline in jugular venous pressure), yet jugular veins are distended and typically show a prominent x descent and an absent y descent as opposed to patients with constrictive pericarditis).