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
[{'content': "Wolff-Parkinson-White disease may be associated with which of the congenital hea defect: March 2011 \nSelect and explain. \nA. Tetralogy of Fallot, B. PDA, C. Ebstein's anomaly, D. All of the above", 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. C: Ebstein's anomaly In Ebstein anomaly, Wolff Parkinson White type of conduction abnormality may be seen WPW syndrome: AV bypass tracts that conduct in an antegrade direction produces a typical ECG pattern which includes: - Sho PR interval - Slurred upstroke of the QRS complex (delta wave) Wide QRS complex Procainamide is helpful Radiofrequency ablation is done Associated conditions: HOCM, mitral valve prolapse, ebsteins anomaly, thyrotoxicosis", 'role': 'assistant'}]