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[Surgical treatment of heart rhythm disorders]
Insights
Surgical treatment for refractory tachyarrhythmias, including Wolff-Parkinson-White syndrome and ventricular tachycardia, showed promising results. Five of six patients remained symptom-free post-operation, highlighting the efficacy of tailored surgical interventions.
Area of Science:
- Cardiology
- Cardiac Surgery
- Electrophysiology
Background:
- Refractory tachyarrhythmias pose significant clinical challenges.
- Wolff-Parkinson-White syndrome and post-myocardial infarction ventricular tachycardias are critical conditions.
- Accurate preoperative diagnosis is crucial for effective treatment.
Purpose of the Study:
- To evaluate the efficacy of surgical interventions for refractory tachyarrhythmias.
- To correlate electrophysiologic study findings with intraoperative mapping.
- To identify patient subgroups that benefit most from surgical management.
Main Methods:
- Cardiac surgery was performed on six patients with refractory tachyarrhythmias.
- Preoperative electrophysiologic studies were conducted.
- Intraoperative epicardial mapping and pace-mapping were utilized for guidance.
Main Results:
- Five out of six patients experienced complete symptom resolution post-surgery.
- A 4-16 month symptom-free follow-up was observed in successful cases.
- One patient with discordant preoperative and intraoperative findings experienced recurrence.
Conclusions:
- Surgical treatment is effective for preexcitation with life-threatening arrhythmias.
- Refractory ventricular tachycardias in coronary artery disease patients can be managed surgically.
- Preexcitation in patients undergoing cardiac surgery for other reasons warrants consideration for surgical intervention.
Abstract:
Six patients underwent cardiac surgery for refractory tachyarrhythmias. Four had Wolff-Parkinson-White syndrome and 2 ventricular tachycardias after myocardial infarction. The results of preoperative electrophysiologic studies corresponded in 5 cases to intraoperative findings of epicardial and pace-mapping. These patients were free of symptoms for the 4-16 months' follow-up. In one patient with divergent results, tachycardia and preexcitation returned two months postoperatively. In the light of the foregoing the authors suggest surgical treatment for 1. preexcitation with life-threatening arrhythmias, 2. refractory ventricular tachycardias with coronary artery disease and 3. preexcitation in patients undergoing open heart surgery for other reasons.