Bioimpacts. 2011;1(3): 171-177.
doi: 10.5681/bi.2011.023
PMID: 23678423
PMCID: PMC3648962
Scopus ID: 84863629838
  Abstract View: 2333
  PDF Download: 1434

Original Research

Radiofrequency Ablation for Treatment of Atrial Fibrillation

Nasser Safaei 1, Hossein Montazerghaem 2, Rasoul Azarfarin 3, Azin Alizadehasl 3, Hossein Alikhah 4*

1 Department of Cardiothoracic Surgery, Shahid Madani Hospital, Tabriz University of Medical Sciences, Tabriz, Iran
2 Department of Cardiac Surgery, Hormozgan University of Medical Sciences, Bandar Abbas, Iran
3 Cardiovascular Research Center, Tabriz University of Medical Sciences, Tabriz, Iran
4 Continuing Medical Education (CME) Center, Tabriz University of Medical Sciences, Tabriz, Iran


Introduction: Atrial Fibrillation (AF) is the most common cardiac arrhythmia which represents a major public health problem. The main purpose of this research is to evaluate the Radiofrequency (RF) ablation effects in the patients with chronic AF scheduled for cardiac surgery because of different heart diseases. Methods: The descriptive and prospective study was conducted on 60 patients with AF scheduled for surgery along with RF ablation. The data were collected by questionnaire and included: patients' age, sex, NYHA class, operation type, past medical history, type and cause of valvular heart disease, preoperative ECG (electrocardiogram), duration of surgery, clamping time, cardiopulmonary bypass, and RF ablation time. RF ablation was followed by the main operation. The follow up examination, ECG, and echocardiography were performed 3 and 6 months after operation. Results: The mean age of patients was 48±10 years (18-71 years). Forty one patients had permanent AF and 19 had the persistent AF. The left ventricular ejection fraction was 48.27±9.75 percent before operation, and reached to 56.27±7.87 percent after the surgery (P<0.001). The mean NYHA class before the surgery was 2.83±0.68 which decreased to 1.34±0.46 6 months after the surgery with RF ablation (P<0.001). One patient (1.6%) died after surgery. Complete relief and freedom from AF recurrence was observed in 70% of patients in the mean follow up in 7 months after the surgery. The sinus rhythm with efficient atrial contraction was established in 100% of discharged patients. Conclusion: RF ablation is an effective procedure to cure atrial fibrillation in patients undergoing cardiac surgeries.
Keywords: Radiofrequency ablation, Atrial fibrillation, Arrhythmia, Sinus rhythm
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Submitted: 22 Jul 2011
Revision: 28 Jul 2011
Accepted: 15 Aug 2011
ePublished: 30 Sep 2011
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