<prompt> Kussmauls sign is not seen in: September 2010Right Ventricular infarctionConstrictive pericarditisRestrictive cardiomyopathyCardiac tamponade  <response>: Ans. D: Cardiac tamponade Possible causes of Kussmauls 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. 