Outcomes and residual gap analysis after the modified cryomaze procedure performed via right minithoracotomy vs sternotomy

ObjectivesDevelopments in both technique and technology have enabled surgeons to perform the maze procedure via right minithoracotomy (RMT) treat atrial fibrillation (AF). This study aimed clarify outcomes of modified cryomaze RMT approach compared with sternotomy approach.MethodsThe cohort comprised 803 consecutive patients who underwent a (130 673 sternotomy) for paroxysmal AF persistent from January 2001 March 2022. The Gray test was applied compare incidence recurrent tachyarrhythmias. Additionally, residual electrical gaps were investigated additional catheter ablation tachyarrhythmias.ResultsThe respective 1-, 2-, 3-year cumulative incidences tachyarrhythmias 13.1%, 19.5%, 23.1% group, 9.3%, 10.9%, 12.8% group (Gray P = .036). All 31 ablation, comprising 14 (10.8%) 17 (2.5%) group. There significant intergroup difference site gaps; more frequently had tricuspid annulus than (6.2% vs 0.4%; < .001).ConclusionsIn approach, failure is likely occur at annulus, where surgical field view relatively poor approach. Therefore, should be performed caution when used.