Laparoscopic Living Donor Nephrectomy: Learning Curve Analysis Through 1446 Cases and Outcomes from 200 Consecutive...

Area of Science:

• Minimally Invasive Surgery
• Transplantation Surgery
• Surgical Education

Background:

• Laparoscopic living donor nephrectomy (LLDN) is standard for kidney procurement.
• Optimal techniques and learning curve trajectories for LLDN require further characterization.
• This study analyzes a high-volume single-center experience with standardized transperitoneal LLDN.

Purpose of the Study:

• To characterize learning curve trajectories in LLDN using cumulative sum (CUSUM) analysis.
• To evaluate outcomes associated with a standardized transperitoneal laparoscopic donor nephrectomy technique.
• To identify proficiency phases in a high-volume LLDN program.

Main Methods:

• Retrospective analysis of 1446 consecutive LLDNs performed by six surgeons.
• CUSUM methodology applied to identify proficiency phases.
• Detailed outcome analysis of the most recent 200 cases (mastery phase).

Main Results:

• CUSUM analysis identified case 669 as the proficiency inflection point, with four distinct learning phases.
• Overall operative time decreased significantly from 154.6 min to 96.8 min.
• The mastery phase (last 200 cases) showed a mean operative time of 96.8 min, warm ischemia time of 3.8 min, 0% conversion rates, and 0.5% major postoperative complications.

Conclusions:

• High-volume centers utilizing standardized transperitoneal LLDN achieve favorable outcomes and extended proficiency phases.
• Institutional volume, team experience, and standardized techniques contribute to successful LLDN outcomes.
• Multi-center validation is recommended to generalize these findings.