This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.V.S, Subject name: Medicine
[{'content': 'Long and peaked a waves are seen in all except- \nSelect and explain. \nA. Tricuspid atresia, B. Ebsteins anomaly, C. Hyperkelamia, D. Right atrial enlargement', 'role': 'user'}, {'content': 'Answer: C \nExplanation: ECG : left axis detion in tricuspid atresia The common ECG findings in Ebstein anomaly include tall and broad P waves, prolonged PR interval, right bundle branch block pattern, fragmented QRS complex, and tachyarrhythmias due to accessory pathways usually present around the malformed TV. ECG Criteria of Right Atrial Enlargement Right atrial enlargement produces a peaked P wave (P pulmonale) with amplitude: > 2.5 mm in the inferior leads (II, III and AVF) > 1.5 mm in V1 and V2 Ref Harrison 20th edition pg 1476', 'role': 'assistant'}]