Intra-operative factors
The specific intra-operative factors are summarized in table 2. 194 patients (81.1%) were performed in an elective setting, with no difference between the groups (p=0.48). Unsurprisingly, the majority of patients in the cohort had MVS (186 patients, 77.8%) with no significant difference between the groups (p=0.17). There were 105 patients (43.9%) who had concomitant CABG with a lower number in the Cox-Maze group (27.1%, p=0.003). The CPB times in the Cox-Maze group was 165.7+/-64.9 minutes which was comparable to the No Surgical AF treatment group (p=0.77). Similarly, the X-clamp times for the Cox-Maze group (135.1+/-40.6 minutes) was not any higher (p=0.91). 9 patients required IABP at the end of the case (3.8%) with no difference between the groups (p=0.67).