Construct Validity Testing of a Laparoscopic Surgical Simulator - 09/08/11
Correspondence address: Elspeth M McDougall, MD, FRCSC, UCI Medical Center, Building 55, Room 304, Rt 81, 101 The City Drive, Orange, CA 92868Résumé |
Background |
We present initial data on the construct, content, and face validity of the LAPMentor (Simbionix), virtual reality laparoscopic surgical simulator.
Study design |
Medical students (MS), residents and fellows (R/F), and experienced laparoscopic surgeons (ES), with < 30 laparoscopic cases per year (ES<30) and those with > 30 laparoscopic cases per year (ES>30), were tested on 9 basic skill tasks (SK) including manipulation of 0-degree and 30-degree cameras (SK1, SK2), eye-hand coordination (SK3), clipping (SK4), grasping and clipping (SK5), two-handed maneuvers (SK6), cutting (SK7), fulguration (SK8), and object-translocation (SK9).
Results |
Mean MS (n=23), R/F (n=24), ES<30 (n=26), and ES>30 (n=30) ages were 26 years (range 21 to 32 years), 31 years (range 27 to 39 years), 49 years (range 31 to 70 years) and 47 years (range 34 to 69 years), respectively. In the lower level skill tasks (SK3, SK4, SK5, and SK6) the ES>30, ES<30, and R/F had similar scores, but were all substantially better than the MS scores. In the higher level skill tasks (SK7, SK8, and SK9), the ES>30 scores tended to be better than the R/F and ES<30, which were similar, and these, in turn, were markedly better than the MS. The ES>30 had notably higher SK8 scores than the R/F and ES<30, who had similar scores, and these had notably better scores than the MS.
Conclusions |
The noncamera skills (SK3 to 9) of the LAPMentor surgical simulator can distinguish between laparoscopically naive and ES. SK8 showed the highest level of construct validity, by accurately differentiating among the MS, R/F, ES<30 and ES>30.
Le texte complet de cet article est disponible en PDF.Abbreviations and Acronyms : ES, MS, R/F, SK
Plan
| Elspeth M McDougall, MD, FRCSC, is Director, Astellas Center for Urological Education. Astellas Pharma US, Inc, has received an unrestricted research grant from Endocare, Inc, and grants from Karl Storz America Endoscopy; Intuitive Surgical; Simbionix; and Ethicon Endo-surgery for equipment support in the laboratory. Ralph V Clayman, MD, FACS, is a shareholder in Applied Medical and a consultant and speaker for Endocare, Inc and Intuitive Surgical. He has unrestricted educational grants from Baxter Corp, Endocare, Inc, and Boston Scientific. He receives royalties from Boston Scientific, Greenwald Surgical, Orthopedic Systems Inc, and Cook Urological. |
Vol 202 - N° 5
P. 779-787 - mai 2006 Retour au numéro
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