Wolff Parkinson White Syndrome

The given ECG clearly depicts the Delta wave at the start of QRS complex. It is characteristic of WPW syndrome. Wolff-Parkinson-White (WPW) syndrome is a congenital condition involving the presence of an abnormal accessory electrical conduction pathway called the Bundle of Kent between the atria & ventricles.
ECG Feature:
• P-R interval <120 ms • Slurred initial upstroke of QRS complex referred to as the Delta wave.

WPW pattern Type A – Positive delta waves in all precordial leads, with small or absent S waves • WPW pattern.

Type B – In A delta wave is negative, with prominent S waves, in right precordial leads •

The QRS complex as a whole is slightly widened •

Discordant ST segment and T wave changes

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