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Published on: July 29, 2011
[Risk of ventricular fibrillation in patients with Wolff-Parkinson White syndrome]
M Bootsma1, E E van der Wall, M J Schalij
1Leids Universitair Medisch Centrum, afd. Cardiologie, Postbus 9600, 2300 RC Leiden. m.bootsma@lumc.nl
Abstract:
A 16-year-old boy suddenly fell off his stool, a 26-year-old man had persistent palpitations and a 29-year-old man was reanimated without an incriminating anamnesis. The diagnosis 'Wolff-Parkinson-White(WPW)-syndrome' was made in all three cases. The boy died as a result of postanoxic neurological injury; in the two men, further cardiac rhythm disturbances were prevented by interrupting the accessory atrioventricular connection via radiofrequency catheter ablation. In ECG databases, a WPW-pattern is encountered in 1-3 of 1000 electrocardiograms. Atrial fibrillation with 1:1 conduction via the accessory pathway, leading to ventricular fibrillation, is the most common cause of sudden death in WPW-patients. In some cases, atrial fibrillation with a rapid ventricular response is the first sign of the syndrome. The risk of sudden death in these patients is estimated to be 0.0-0.6% per patient per year and cannot be predicted easily. Curative treatment is possible in the form of radiofrequency catheter ablation.
Insights
Wolff-Parkinson-White (WPW) syndrome can lead to sudden cardiac death, especially with atrial fibrillation. Radiofrequency catheter ablation offers a curative treatment for this heart rhythm disorder.
Area of Science:
- Cardiology
- Electrophysiology
Background:
- Wolff-Parkinson-White (WPW) syndrome affects 1-3 per 1000 individuals.
- It involves an accessory atrioventricular connection, predisposing to cardiac arrhythmias.
Observation:
- Three cases are presented: a 16-year-old boy with sudden collapse and death, and two men (26 and 29 years old) experiencing palpitations and requiring resuscitation.
- All three were diagnosed with WPW syndrome.
Findings:
- Sudden death in WPW patients is often caused by atrial fibrillation with 1:1 conduction through the accessory pathway, leading to ventricular fibrillation.
- Radiofrequency catheter ablation successfully treated the two adult patients by interrupting the accessory pathway, preventing further arrhythmias.
Implications:
- WPW syndrome poses a significant risk of sudden cardiac death, estimated at 0.0-0.6% per patient per year.
- Atrial fibrillation with rapid ventricular response can be the initial presentation of WPW syndrome.
- Radiofrequency catheter ablation provides a curative treatment option for WPW syndrome, significantly reducing mortality risk.
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