This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Hea failure, Subject name: Medicine
[{'content': 'Blunted y descent is seen with? \nSelect and explain. \nA. Tetralogy of Fallot, B. Tricuspid stenosis, C. Tricuspid regurgitation, D. Tricuspid atresia', 'role': 'user'}, {'content': "Answer: B \nExplanation: Normally 'y' descent seen at diastasis event but if there is any obstruction in valve opening = y descent will be blunted (absent). 2 causes of Blunted 'y' descent: i) C. Tamponade ii) T. Stenosis Option A: TOF= Large 'A' wave in JVP. Option C: Tricuspid Regurgitation= Steep Y descent =Constrictive Pericarditis= Steep x & steep y = Cardiac Tamponade= Steep x & Absent/Blunted y", 'role': 'assistant'}]