Factors Affecting Transperitoneal Robot-Assisted Laparoscopic Radical Prostatectomy.

Area of Science:

• Urology
• Surgical Oncology
• Robotic Surgery

Background:

• Robot-assisted radical prostatectomy (RARP) is a standard treatment for prostate cancer.
• Patient factors like Body Mass Index (BMI) and preoperative risk classification may influence surgical outcomes.
• Understanding these influences is crucial for optimizing surgical planning and patient care.

Purpose of the Study:

• To evaluate the impact of BMI, preoperative risk, and surgical history on RARP.
• To analyze effects on specific surgical steps and lymph node (LN) involvement.
• To identify patient characteristics that may necessitate adjustments in surgical approach.

Main Methods:

• Retrospective analysis of 225 transperitoneal RARP cases performed by a single surgeon.
• Dependent variables included operative times, dissection times, and LN counts (dissected and positive).
• Covariates analyzed: BMI, D'Amico risk classification, prior inguinal herniotomy, and previous abdominal operations.

Main Results:

• Higher BMI groups (≥25 kg/m²) showed significant differences in pelvic lymphadenectomy duration and LN metastasis.
• D'Amico risk groups (low, intermediate, high) differed significantly in prostatectomy duration, pelvic lymphadenectomy, and LN metastasis.
• Previous abdominal operations significantly influenced pelvic lymphadenectomy duration.
• Multivariate analysis confirmed the impact of these covariates on pelvic lymphadenectomy.

Conclusions:

• BMI and preoperative risk classification are significant factors affecting RARP.
• Higher BMI and high-risk patients require longer pelvic lymphadenectomy with increased nodal yield.
• Surgical planning for RARP should incorporate patient BMI and D'Amico risk stratification.