title: Intraoperative saline-irrigated radiofrequency modified Maze procedure for atrial fibrillation.
abstract: BACKGROUND
  This study was conducted to evaluate the effectiveness of the saline-irrigated radiofrequency modified Maze operation for treatment of chronic atrial fibrillation, and to compare the results of the left and biatrial procedures.
  
  
  METHODS
  During a period of 11 months, 62 patients with chronic atrial fibrillation who were having concomitant cardiac surgery underwent the procedure. The mean age of the patients was 52 +/- 14 years. Patients underwent either a biatrial (group A; n = 39) or left atrial (group B; n = 23) procedure.
  
  
  RESULTS
  Two patients (3.2%) died early in the postoperative period. Three patients (4.8%) required reoperation for bleeding. One patient in group A (1.6%) received a permanent pacemaker. Patients in both groups were free of atrial fibrillation at the end of the procedure (group A: sinus 86.9%, pacemaker 13%; group B: sinus 90.5%, pacemaker 9.5%) (p > 0.05). At 1-month and longer-term follow-up, sinus rhythm was maintained in 92% and 95% of cases in group A, respectively, whereas this rate was 71% and 81% in group B (p > 0.05). Holter monitor surveillance revealed a higher rate of atrial fibrillation, atrial arrhythmias, and atrial flutter in group B (p < 0.05). Transthoracic echocardiography revealed improvement over time in left atrial transport function in both groups (p < 0.05).
  
  
  CONCLUSIONS
  The saline-irrigated radiofrequency modified Maze procedure was performed safely and efficiently. Both the left and biatrial procedures were successful in terms of restoring sinus rhythm during short-term follow-up. Long-term follow-up with more cases is needed to show the superiority of one method over the other.
authors.affiliation: Department of Cardiovascular Surgery, Kadir Has University, Florence Nightingale Hospital, Istanbul, Turkey.
authors.forename: Mustafa
authors.initials: M
authors.lastname: Güden
authors.forename: Belhhan
authors.initials: B
authors.lastname: Akpinar
authors.forename: Ilhan
authors.initials: I
authors.lastname: Sanisoğlu
authors.forename: Ertan
authors.initials: E
authors.lastname: Sağbaş
authors.forename: Osman
authors.initials: O
authors.lastname: Bayindir
mesh_terms: D001281:Atrial Fibrillation / Q000601:surgery*; D006348:Cardiac Surgical Procedures / Q000379:methods; D017115:Catheter Ablation; D002908:Chronic Disease; D017548:Echocardiography, Transesophageal; D015716:Electrocardiography, Ambulatory; D005500:Follow-Up Studies; D006801:Humans; D008875:Middle Aged; D010138:Pacemaker, Artificial; D011446:Prospective Studies; D012965:Sodium Chloride
chemical_list: D012965:Sodium Chloride