Obesity Surgery

, Volume 23, Issue 5, pp 589–593

A Cadaveric Porcine Model for Assessment in Laparoscopic Bariatric Surgery—a Validation Study

  • Camilo Boza
  • Julian Varas
  • Erwin Buckel
  • Pablo Achurra
  • Nicolás Devaud
  • Trystan Lewis
  • Rajesh Aggarwal
Original Contributions

DOI: 10.1007/s11695-012-0807-9

Cite this article as:
Boza, C., Varas, J., Buckel, E. et al. OBES SURG (2013) 23: 589. doi:10.1007/s11695-012-0807-9

Abstract

Background

Laparoscopic Roux-en-Y gastric bypass (LRYGBP) is the most effective surgical therapy for morbid obesity. It is an advanced laparoscopic surgical procedure and has a protracted learning curve. Therefore, it is important to develop innovative ways of training and assessing surgeons. The aim of this study is to determine if a cadaveric porcine jejuno-jejunostomy model is an accurate way of assessing a surgeon's technical skills by determining if a correlation exists with how he performs in the operating room.

Methods

Eight surgeons of varying experience performed a side-to-side stapled jejuno-jejunostomy on a cadaveric bench model before proceeding to perform the procedure on a real patient scheduled for LRYGBP. Performance was assessed using a motion tracking device, the Imperial College Surgical Assessment Device. Each procedure was recorded in video and scored by two blinded expert surgeons using procedure-specific rating scales.

Results

The cadaveric bench model demonstrated concurrent validity with significant correlations between performance on the cadaveric model and patient for dexterity measures. Left-hand path length, r = 0.857 (median, 27, 41.3; P = 0.007), right-hand path length, r = 0.810 (median, 31.5, 60; P = 0.015) and total number of movements, r = 0.743 (median, 422, 637; P = 0.035). This correlation in performance was also demonstrated in the video rating scales, r = 0.727 (median, 13.2, 14.8; P = 0.041). No correlation was found in operative time (median, 541, 742; P = 0.071).

Conclusions

This study demonstrates the concurrent validity of the cadaveric porcine model, showing similar performances in surgeons completing a jejuno-jejunostomy on the cadaveric model and the patient.

Keywords

Simulation Gastric bypass Laparoscopy Bariatric surgery Education Surgery Training/courses 

Copyright information

© Springer Science+Business Media New York 2013

Authors and Affiliations

  • Camilo Boza
    • 1
  • Julian Varas
    • 1
  • Erwin Buckel
    • 1
  • Pablo Achurra
    • 1
  • Nicolás Devaud
    • 1
  • Trystan Lewis
    • 2
  • Rajesh Aggarwal
    • 2
  1. 1.Department of Digestive Surgery, Hospital ClinicoPontificia Universidad Católica de ChileSantiagoChile
  2. 2.Department of Biosurgery and Surgical TechnologyImperial College LondonLondonUK

Personalised recommendations