Mortality and morbidity:
Catheter angiography was performed in seven (7.6%) patients at the postoperative period. Diagnostic angiography was performed in three (3.2%) patients, and the remaining four patients underwent transcatheter fenestration. There was statistically significant difference between groups in terms of reintervention (p=0.04). In Group 2, four (9%) patients had transcatheter fenestration, whereas in Group 1, no patient had transcatheter fenestration (Table 2). These four (9%) patients drainage was reduced and they were discharged.
Reoperation was performed in 13 (14.1%) patients. Reoperations were performed for bleeding, cardiac tamponade and Fontan takedown. There was no statistically significant difference between groups in terms of reoperation (p=0.61) (Table 2). One (1.1%) patient in Group 1 and two (2.2%) patients in Group 2 were reoperated and fenestrations were performed. In two (2.2%) patients who were reoperated for suspicion of cardiac tamponade fanestration was performed because of Fontan pressure was measured above 16 mmHg.
The overall hospital mortality was 5.4%. There were no statistically significant difference between the groups in terms of mortality and MAE (p=0.58, p=0.43 respectively) (Table 3).
Parameters affecting drainage: In the multivariate analysis, the application of the protocol was observed to be the only factor for reduced drainage (OR: 2.46, 95% CI Lower and Upper: 1.03-5.86, p= 0.04) (Table 4).