Z-shaped running suture for outer layer renorrhaphy during robot-assisted partial nephrectomy.

Area of Science:

• Urology
• Surgical Innovation
• Robotic Surgery

Background:

• Robot-assisted partial nephrectomy (RPN) is a standard procedure for renal tumors.
• Effective renorrhaphy is crucial for minimizing complications after RPN.

Purpose of the Study:

• To describe and evaluate a novel zigzag-shaped (Z-shaped) outer layer renorrhaphy technique during RPN.
• To assess the feasibility, safety, and initial outcomes of this innovative renorrhaphy strategy.

Main Methods:

• The Z-shaped renorrhaphy technique involves a 2-0 Vicryl running suture with a zigzag pattern on parenchymal margins.
• Sutures are secured with Hem-o-lok clips at each pass.
• A retrospective analysis of 159 patients undergoing RPN with this technique between 2017 and 2022 was performed.

Main Results:

• The study included 159 patients, with 64.8% having cT1a renal masses.
• Low rates of postoperative complications were observed, including perirenal hematomas (3.1%) and urinary leakage (3.8%).
• No conversions to open surgery were required; 3.1% were converted to radical nephrectomy.

Conclusions:

• The Z-shaped outer layer renorrhaphy is a feasible and safe technique for RPN in experienced hands.
• This method demonstrates potential for effective hemostasis and reduced urinary leakage.
• Further comparative studies are warranted to validate these findings against traditional techniques.