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: Medicine
Kussmaul's sign is seen in all except 
Select and explain. 
A. Constrictive Pericarditis, B. Restrictive Cardiomyopathy, C. Tricuspid stenosis, D. Cardiac tamponade
D: Cardiac tamponade
Answer: D: Cardiac tamponade 
Explanation: Kussmaul's sign is absent in Cardiac tamponade.