Toward a standardized system for reporting surgical outcome of pediatric and adolescent live donor renal allotransplantation.

PURPOSE

There is a lack of a standardized reporting methodology for surgical complications of pediatric renal transplantation. We applied Martin criteria and the modified Clavien-Dindo classification in pediatric renal transplantation.

MATERIALS AND METHODS

We retrospectively reviewed the charts of 447 patients 20 years or younger who underwent renal transplantation between March 1976 and January 2011. Martin criteria were fulfilled and complications were graded according to the modified Clavien-Dindo classification. For early complications grades I and II were considered low grade and III to V high grade. A similar grading system was adopted for late complications.

RESULTS

A total of 84 early complications (18.5%) occurred in 77 transplant recipients (17%). Of grade I complications 37 (8.1%) were asymptomatic lymphoceles. Grade II complications were observed in 2 patients (0.4%). Grade IIIa complications included aspiration of hematoma (1 case), percutaneous nephrostomy fixed for ureteral obstruction (3), percutaneous tube drain for symptomatic lymphoceles (7) and antegrade ureteral stenting for ureteral leakage (6). Grade IIIb complications included exploration for wound dehiscence (1 case), revision of ureterovesical anastomosis (8), marsupialization of lymphoceles (4), hemorrhage (3) and vascular thrombotic accidents (6). Graft nephrectomy (grade IVa) complications occurred in 2 transplant recipients. Among 4 mortalities (grade V) only 1 patient died due to surgical complications. On multivariate analysis delayed graft function was the only predicator of high grade surgical complications (p = 0.005). High grade surgical complications affected recipient but not graft survival.

CONCLUSIONS

Using a standardized, high quality reporting methodology is feasible in pediatric renal transplantation. However, consensus should be sought regarding medical complications and a grading system should be developed for reporting of late complications.