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Factors Affecting Transperitoneal Robot-Assisted Laparoscopic Radical Prostatectomy.

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Body Mass Index (BMI) and preoperative risk significantly impact robot-assisted radical prostatectomy (RARP) steps. Higher BMI and high-risk patients experienced longer pelvic lymphadenectomy and more lymph node yield.

Keywords:
lymph node dissectionoperative timeprostate cancer

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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.