This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: General anatomy, Subject name: Anatomy
Gaint 'a' waves in JVP occur in all except 
Select and explain. 
A. Junctional rhythm, B. Pulmonary hypeension, C. Tricuspid regurgitation, D. Complete hea block
C: Tricuspid regurgitation
Answer: C: Tricuspid regurgitation 
Explanation: Ref Harrison 19 th ed pg 1485 Tricuspid stenosis is associated with large or gaint 'a'waves. Not tricuspid regurgitation ..