WPW EKG after cardioversion of SVT Here is the post-conversion ECG The patient is now in Sinus Rhythm, but what else do you notice? The PR interval is strikingly short! There are tall R waves in V2 + V3, and there are delta waves in multiple leads. This is WPW! - Sam Ghali, M.D. @EM_RESUS #WPW #EKG #ECG #Electrocardiogram #Clinical #Cardiology