Outcome of concomitant left atrial ablation during valvular heart surgery: an African perspective

Dambuza Nyamande, Risenga F. Chauke, Siphosenkosi M. Mazibuko, Shere P. Ramoroko

Research output: Contribution to journalArticlepeer-review

Abstract

OBJECTIVES: The aim of this study was to determine the success rates of left atrial radiofrequency cardiac ablation for atrial fibrillation during heart valve surgery. METHODS: This was a three-year retrospective study of 53 patients who had valve surgery and cardio-ablation. Immediate and long-term overall outcomes were analysed at three, six, nine, 12 and 24 months. The results were tested for significance by comparing to a chance outcome (50:50 probability) using the Z-test for the normal approximation of the binomial distribution. RESULTS: A total of 56.9% of patients converted immediately to sinus rhythm, with that number increasing over time. Pre-operative poor ejection fraction was the only predictor of low success rates following ablation. Long-term rhythm was determined by the patient's rhythm between three and six months. CONCLUSIONS: Concomitant left atrial ablation during valve surgery is effective in treating atrial fibrillation. Routine use of anti-arrhythmic medication after surgical ablation is not recommended.

Original languageEnglish
Pages (from-to)60-64
Number of pages5
JournalCardiovascular Journal of Africa
Volume33
Issue number2
DOIs
Publication statusPublished - 1 Mar 2022

Keywords

  • atrial fibrillation
  • cardio‐ablation

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