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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.
2 passages
©2013 UpToDate ® Print Email ECG in Wolff-Parkinson-White The 12 lead ECG shows the typical features of Wolff-Parkinson-White; the PR interval is short (*) and the QRS duration prolonged as a result of a delta wave (arrow), indicating ventricular preexcitation. Courtesy of Martin Burke, DO. Normal ECG Normal electrocardiogram showing normal sinus rhythm at a rate of 75 beats/min, a PR interval of 0.14 sec, a QRS interval of 0.10 sec, and a QRS axis of approximately 75°. Courtesy of Ary Goldberger, MD.
©2013 UpToDate ® Print Email ECG in Wolff-Parkinson-White The 12 lead ECG shows the typical features of Wolff-Parkinson-White; the PR interval is short (*) and the QRS duration prolonged as a result of a delta wave (arrow), indicating ventricular preexcitation. Courtesy of Martin Burke, DO. Normal ECG Normal electrocardiogram showing normal sinus rhythm at a rate of 75 beats/min, a PR interval of 0.14 sec, a QRS interval of 0.10 sec, and a QRS axis of approximately 75°. Courtesy of Ary Goldberger, MD. Sinus rhythm radiofrequency ablation of accessory pathway The 12 lead ECG of a patient with Wolff-Parkinson-White who underwent a successful radiofrequency ablation of an accessory pathway shows a normal PR interval (*), no delta wave, and QRS complexes that are normal. Courtesy of Martin Burke, DO.