As a medical professional with expertise in cardiology, I can provide you with an explanation of the Wolff-Parkinson-White (WPW) Syndrome and its characteristic ECG findings. Wolff-Parkinson-White (WPW) Syndrome is a pre-excitation syndrome that occurs due to the presence of an accessory pathway, or bundle of Kent, which bypasses the normal electrical conduction system of the heart. This can lead to a potentially serious arrhythmia known as paroxysmal supraventricular tachycardia (PSVT). On an ECG, the key findings in WPW Syndrome include: 1. Delta wave: This is a slurred, initial upstroke of the QRS complex that represents the early activation of the ventricles by the accessory pathway. The Delta wave is the most characteristic feature of WPW Syndrome on ECG. 2. Short PR interval: The PR interval is the time from the start of the P wave to the start of the QRS complex. In WPW Syndrome, this interval is often less than 0.12 seconds because the impulse reaches the ventricles early via the accessory pathway. 3. Wide QRS complex: The QRS complex may be wide due to the abnormal ventricular activation. 4. **Paroxysmal supraventricular tachycardia (PSVT)**: During an episode of tachycardia, the ECG will show a rapid heart rate, typically over 150 beats per minute, with a regular rhythm. It's important to note that not all individuals with WPW Syndrome will have the Delta wave visible on their ECG at all times. It may be intermittently present or not visible during a normal sinus rhythm but become apparent during an episode of tachycardia. read more >>

Wolff-Parkinson-White is characterized by the presence of an ��accessory pathway�� or a ��bypass tract.�� ... The typical ECG finding of WPW is a short PR interval and a ��delta wave.�� A delta wave is slurring of the upstroke of the QRS complex.read more >>