Perioperative factors
The mean total operative time (in minutes) was 179.45 ± 26.79 for Group 1 and 154.72 ± 26.15 for Group 2. The difference between these two groups was therefore significant (p = 0.004). Moreover, the mean aortic cross-clamp (ACC) time (in minutes) was significantly increased in Group 1 compared to Group 2 (43.28 ± 21.75 versus 21.17 ± 11.25) (p = 0.018). The mean CPB time (in minutes) was 76.26 ± 26.51 for Group 1 and 46.84 ± 25.72 for Group 2. The mean length of incision (in centimetres) was 7.63 ± 0.69 for Group 1 and 22.62 ± 1.93 for Group 2, which was found to be statistically significant.
Table II: Distribution of patients of both groups by operative parameters