Operations for Wolff-Parkinson-White syndrome

Area of Science:

• Cardiology
• Cardiac Surgery
• Electrophysiology

Background:

• Symptomatic tachycardia, often associated with Wolff-Parkinson-White syndrome, necessitates effective treatment strategies.
• Atrioventricular accessory pathways are a common cause of preexcitation and tachycardia.
• Surgical intervention offers a potential curative solution for these conditions.

Purpose of the Study:

• To evaluate the efficacy and safety of surgical division of atrioventricular accessory pathways.
• To assess the success rates and recurrence of preexcitation after the procedure.
• To determine the perioperative risks and long-term outcomes in patients undergoing this surgery.

Main Methods:

• Retrospective analysis of 46 patients undergoing surgical division of 55 atrioventricular accessory pathways.
• Utilized a modified endocardial approach with bipolar hand-held electrode and simultaneous multisite mapping.
• Follow-up evaluation of patient outcomes, including recurrence of preexcitation and atrial fibrillation.

Main Results:

• High overall patient success rate of 93%, with 91-93% of accessory pathways successfully divided.
• Perioperative morbidity was 17%, with no early or late deaths.
• Five recurrences of preexcitation were observed, with two requiring reoperation; one late recurrence of atrial fibrillation.

Conclusions:

• Surgical division of atrioventricular accessory pathways is a highly successful treatment for symptomatic tachycardia and Wolff-Parkinson-White syndrome.
• The procedure demonstrates a low operative risk and favorable long-term outcomes.
• Careful patient selection and surgical technique are crucial for optimal results, especially in complex cases.