This site is intended for healthcare professionals
Login | Register (NOW FREE)

Medical search

Wolff-Parkinson-White syndrome

FREE subscriptions for doctors and students... click here
You have 3 open access pages.

The Wolff-Parkinson-White syndrome is characterised by:

  • episodes of tachycardia
  • ECG signs of ventricular pre-excitation in between attacks

The phenomenon of ventricular pre-excitation results from abnormal atrio-ventricular conduction along a pathway termed the bundle of Kent. Such aberrant tissue rapidly conducts atrial depolarisations directly to the ventricular myocardium, so bypassing the slower AVN and the bundle of His. Often the QRS complex is normal during tachycardic episodes because the re-entry loop involves anterograde conduction along the AVN-His system and retrograde conduction along the bundle of Kent.

The abnormal wave of ventricular depolarisation results in a delta wave which appears as a slur to the upstroke of the otherwise normal QRS complex. The rapidity of the aberrant conduction pathway causes the PR interval to be shorter than normal.

About 50% of people with the ECG characteristics of WPW syndrome will experience re-entrant supraventricular tachycardias.

Click here for example ECGs and further information

Links:

The information provided herein should not be used for diagnosis or treatment of any medical condition. A licensed medical practitioner should be consulted for diagnosis and treatment of any and all medical conditions. Copyright 2016 Oxbridge Solutions LtdĀ®. Any distribution or duplication of the information contained herein is strictly prohibited. Oxbridge Solutions LtdĀ® receives funding from advertising but maintains editorial independence. GPnotebook stores small data files on your computer called cookies so that we can recognise you and provide you with the best service. If you do not want to receive cookies please do not use GPnotebook.