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Updated: May 21, 2025

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Published on: July 19, 2021
Robot-Assisted Laparoscopic Pyeloplasty in Infants Under 3 Months: Single-Institution Study Findings, Safety
Wei Li1, Xinjin She1, Chao Chen1
1Pediatric Surgery Department, The First Affiliated Hospital of Guangxi Medical University, Nanning, PR China.
Insights
Robot-assisted laparoscopic pyeloplasty (RALP) is safe and effective for treating ureteropelvic junction obstruction (UPJO) in infants under 3 months. Outcomes are comparable to older children, demonstrating favorable results.
Area of Science:
- Pediatric Urology
- Minimally Invasive Surgery
- Surgical Outcomes
Background:
- Ureteropelvic junction obstruction (UPJO) is a common cause of congenital hydronephrosis in infants.
- Robot-assisted laparoscopic pyeloplasty (RALP) is increasingly used, but data on its use in very young infants (<3 months) is limited.
- Understanding the safety and efficacy of RALP in this specific population is crucial for surgical decision-making.
Purpose of the Study:
- To evaluate the safety and efficacy of robot-assisted laparoscopic pyeloplasty (RALP) for ureteropelvic junction obstruction (UPJO) in infants younger than 3 months.
- To compare the outcomes of RALP in infants under 3 months with those aged 3 months to 3 years.
- To assess perioperative details, postoperative complications, and renal function recovery.
Main Methods:
- Retrospective analysis of clinical data from January 2019 to June 2022.
- Two groups were formed: RA group (infants <3 months, n=25) and RB group (infants 3 months to 3 years, n=25).
- Comparison of baseline data, operative time, hospitalization, hydronephrosis improvement (APD), and split renal function (SRF).
Main Results:
- All RALP procedures were successful without conversion to open surgery in both groups.
- No significant differences in operative time or hospitalization duration between the RA and RB groups.
- Both groups showed significant improvement in APD and SRF post-surgery, with no significant differences between groups. No significant variations in postoperative complications were observed.
Conclusions:
- Robot-assisted laparoscopic pyeloplasty (RALP) is a safe and effective treatment for ureteropelvic junction obstruction (UPJO) in infants under 3 months of age.
- The technique yields favorable therapeutic outcomes comparable to older children.
- RALP offers a mature and stable surgical option for this young infant population.
Abstract:
At present, there is a lack of cohort studies on robot-assisted laparoscopic pyeloplasty (RALP) for the treatment of ureteropelvic junction obstruction (UPJO) in infants under 3 months of age. This study aims to enhance the understanding of the safety and efficacy of RALP in this specific infant population. We retrospectively analyzed the clinical data of children with UPJO who underwent unilateral pyeloplasty at our center from January 2019 to June 2022. We categorized the children based on their ages: those younger than 3 months old comprised the RA group (25 cases), whereas those aged 3 months to 3 years old formed the RB group (25 cases). We collected and statistically analyzed the baseline data, perioperative details, postoperative complications, and the recovery of split renal function (SRF) along with the improvement in hydronephrosis for both patient groups. Both age groups successfully underwent the operation without requiring conversion to open surgery. There were no significant differences observed in the operation time or postoperative hospitalization duration between the two groups (P > 0.05). Following surgery, both groups showed significant improvements in anteroposterior diameter (APD) and SRF (P < 0.05). However, there was no significant discrepancy noted in the recovery of APD and SRF between the two groups postoperatively (P > 0.05). Additionally, there were no significant variations in postoperative complications between the two groups (P > 0.05). Given the mature and stable nature of the surgical technique, RALP proves effective in treating UPJO in infants younger than 3 months, yielding favorable therapeutic outcomes.

