Figure: ECG Wolf-Parkinson-White (WPW) sinus rhythm

Introduction

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PR:  128
QRS: 138      Sinus arrhythmia. Rate varies from 48-66/min.
QT:  462      Wolff-Parkinson-White syndrome. Delta waves. Initial forces anterior.
QTc: 458

 Axes

P:    38
QRS:  79
T:    52

Wolf Parkinson White (WPW) syndrome.
Note presence of delta wave with upstroke of R wave.