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Surgical Endoscopy
Published in: Surgical Endoscopy 7/2015

01-07-2015

Learning curve for robotic-assisted surgery for rectal cancer: use of the cumulative sum method

Authors: Tomohiro Yamaguchi, Yusuke Kinugasa, Akio Shiomi, Sumito Sato, Yushi Yamakawa, Hiroyasu Kagawa, Hiroyuki Tomioka, Keita Mori

Published in: Surgical Endoscopy | Issue 7/2015

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Abstract

Background

Few data are available to assess the learning curve for robotic-assisted surgery for rectal cancer. The aim of the present study was to evaluate the learning curve for robotic-assisted surgery for rectal cancer by a surgeon at a single institute.

Methods

From December 2011 to August 2013, a total of 80 consecutive patients who underwent robotic-assisted surgery for rectal cancer performed by the same surgeon were included in this study. The learning curve was analyzed using the cumulative sum method. This method was used for all 80 cases, taking into account operative time.

Results

Operative procedures included anterior resections in 6 patients, low anterior resections in 46 patients, intersphincteric resections in 22 patients, and abdominoperineal resections in 6 patients. Lateral lymph node dissection was performed in 28 patients. Median operative time was 280 min (range 135–683 min), and median blood loss was 17 mL (range 0–690 mL). No postoperative complications of Clavien–Dindo classification Grade III or IV were encountered. We arranged operative times and calculated cumulative sum values, allowing differentiation of three phases: phase I, Cases 1–25; phase II, Cases 26–50; and phase III, Cases 51–80.

Conclusions

Our data suggested three phases of the learning curve in robotic-assisted surgery for rectal cancer. The first 25 cases formed the learning phase.
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Metadata
Title
Learning curve for robotic-assisted surgery for rectal cancer: use of the cumulative sum method
Authors
Tomohiro Yamaguchi
Yusuke Kinugasa
Akio Shiomi
Sumito Sato
Yushi Yamakawa
Hiroyasu Kagawa
Hiroyuki Tomioka
Keita Mori
Publication date
01-07-2015
Publisher
Springer US
Published in
Surgical Endoscopy / Issue 7/2015
Print ISSN: 0930-2794
Electronic ISSN: 1432-2218
DOI
https://doi.org/10.1007/s00464-014-3855-5

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