Laparoscopic Heminephrectomy for Duplex Kidney in Children-The Learning Curve

Area of Science:

• Pediatric Surgery
• Urology
• Minimally Invasive Surgery

Background:

• Duplex kidneys are a common congenital anomaly.
• Complicated duplex kidneys often require surgical intervention.
• Laparoscopic heminephrectomy is an established treatment option.

Purpose of the Study:

• To evaluate the learning curve associated with laparoscopic transperitoneal heminephrectomy in pediatric patients.
• To analyze the evolution of outcomes during the initial surgical experience.
• To identify factors influencing complication rates and operative times.

Main Methods:

• Retrospective analysis of 33 pediatric patients undergoing laparoscopic heminephrectomy for duplex kidneys.
• Patients divided into two groups based on surgical experience (operations 1-16 vs. 17-33).
• Outcomes including complications, reoperations, urine leakage, kidney function, and operative time were compared between groups.

Main Results:

• A significant reduction in total complications was observed from Group 1 (7 patients) to Group 2 (2 patients).
• Operative time decreased from a mean of 140 minutes in Group 1 to 125 minutes in Group 2.
• No cases required conversion to open surgery; however, two patients needed reoperation for ureteral stump issues.

Conclusions:

• Laparoscopic heminephrectomy for duplex kidneys in children demonstrates a clear learning curve.
• Surgical proficiency improves with experience, leading to fewer complications and shorter operative times.
• Consideration of ureteral stump removal is crucial in cases of reflux to the upper pole.