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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

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contentuptodate· Content· item f32_39_33396

©2013 UpToDate ® Print Email AF in EAVNC The 12 lead ECG during sinus rhythm (panel A) in a patient with enhanced atrioventricular nodal conduction (EAVNC). The ECG shows a normal PR interval and QRS complex without evidence of preexcitation. During atrial fibrillation (AF) (panel B), there is a rapid ventricular response of up to 270 beats/min, a result of EAVNC and a short AV nodal refractory period.