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Related Experiment Video

Updated: Jul 1, 2026

Retzius-Sparing Robot-Assisted Radical Prostatectomy
12:10

Retzius-Sparing Robot-Assisted Radical Prostatectomy

Published on: May 19, 2022

Dual Bipolar Strategy and Postoperative Drain Output in Robot-assisted Radical Nephrectomy.

Takeshi Miyazaki1, Fumihiro Yamazaki1, Yuichiro Fukuhara1

  • 1Department of Urology, Fukuoka University Faculty of Medicine, Fukuoka, Japan.

Anticancer Research
|June 29, 2026
PubMed
Summary

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The dual bipolar method (DBM) in robot-assisted radical nephrectomy (RARN) significantly reduces postoperative drain output. While operative time increased, DBM offers a valuable technique for minimizing drainage after RARN.

Area of Science:

  • Urology
  • Surgical Technology
  • Minimally Invasive Surgery

Background:

  • Robot-assisted radical nephrectomy (RARN) is a standard procedure for kidney cancer.
  • Optimizing postoperative recovery, including drain management, remains an area of focus.
  • The dual bipolar method (DBM) is a surgical technique with potential benefits in RARN.

Purpose of the Study:

  • To evaluate the clinical utility of the dual bipolar method (DBM) in robot-assisted radical nephrectomy (RARN).
  • To specifically assess the impact of DBM on postoperative drain output.
  • To compare perioperative outcomes between RARN with and without DBM.

Main Methods:

  • A prospective observational cohort study involving 50 patients undergoing RARN.
  • Patients were divided into a DBM group (n=12) and a non-DBM group (n=38).
Keywords:
Robot-assisted laparoscopic radical nephrectomydouble bipolar methodrenal cancer

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Last Updated: Jul 1, 2026

Retzius-Sparing Robot-Assisted Radical Prostatectomy
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Published on: May 19, 2022

  • Primary outcome: postoperative drain output; Secondary outcomes: operative time, blood loss, hospital stay, and complications.

    • Main Results:

    • The DBM group showed significantly lower drain output on postoperative day 1 (63.5 vs. 130.0 ml) and cumulatively from POD1-5 (85.0 vs. 245.0 ml).
    • Operative time and console time were significantly longer in the DBM group (p=0.002 and p=0.032, respectively).
    • Multivariable analysis identified DBM use as the sole significant predictor of reduced cumulative drain output (β=151.95, p=0.031).

    Conclusions:

    • DBM in RARN is associated with significantly reduced postoperative drain output.
    • Despite increased console time, DBM did not result in observed adverse events.
    • DBM is a potentially beneficial technique in RARN for minimizing postoperative drainage.