Preexcitation Syndrome

Preexcitation syndrome (Wolff-Parkinson-White) is an accessory atrioventricular pathway that bypasses the AV node, causing early ventricular activation (delta wave, short PR). It may cause AVRT (SVT) and, in AF, rapid ventricular response (risk of VF). Treatment: asymptomatic - risk stratification; symptomatic - catheter ablation of accessory pathway (curative); acute SVT - AV-nodal blockers; in AF with WPW - avoid AV-nodal blockers, use procainamide/cardioversion.

Common Symptoms

Palpitations/SVT; delta wave/short PR on ECG; risk of rapid AF/VF

Causes and Pathogenesis

Congenital accessory AV pathway bypasses the AV node, causing preexcitation and reentrant tachycardia.

Treatment

Ablation for symptomatic; acute SVT - AV blockers; AF with WPW - avoid AV blockers, procainamide/cardioversion

Preventive Measures

Risk stratify; ablation is curative; avoid AV blockers in preexcited AF.

Department to Visit

It is recommended to visit the Cardiology/EP department; an appointment can be booked on this platform before the visit.

Warm reminder: The above information is for health science reference only and cannot replace professional medical diagnosis. If you have related symptoms, please seek medical attention at a regular hospital promptly.