Snapshot A 10-year-old boy presents to the pediatrician’s office for an electrocardiogram. His family history includes Wolff-Parkinson-White syndrome and sudden cardiac death. His parents are adamant about an electrocardiogram at this visit. Results show a widened QRS, a delta wave, and a shortened PR interval, confirming the diagnosis. Introduction Clinical definition login to view 1 more bullet Epidemiology login to view 2 more bullets Etiology login to view 1 more bullet Pathogenesis login to view 6 more bullets Associated conditions login to view 2 more bullets Prognosis login to view 10 more bullets Presentation Symptoms login to view 7 more bullets Physical exam login to view 1 more bullet Studies Electrocardiogram (ECG) login to view 4 more bullets Making the diagnosis login to view 1 more bullet Differential Bundle branch block login to view 2 more bullets Treatment Management approach login to view 1 more bullet Medical login to view 7 more bullets Non-operative login to view 6 more bullets Complications Sudden cardiac death