Related Experiment Video
Updated: Mar 16, 2026

Utilizing a 3D Printed Laparoscopic Nissen Fundoplication Model to Shorten a Resident's Learning Curve
Published on: August 15, 2025
Are General Surgery Residents Accurate Assessors of Their Own Flexible Endoscopy Skills?
Parth Vyasa1, Ross E Willis2, Brian J Dunkin3
1Department of Surgery, University of Texas Southwestern Medical Center, Dallas, Texas.
Background:
Surgeons in training must be able to accurately gauge their own ability and performance to better understand where additional practice is needed and can help inform self-directed learning endeavors. This study had the following 3 goals: (1) to examine the accuracy of residents' assessments of their endoscopic skills, (2) to investigate if accuracy improves over time and practice, and (3) to compare the efficacy of 3 interventions-practice only (PO), self-observation (SO), or expert observation (EO)-on self-assessment accuracy.
Methods:
Overall, 30 first-year general surgery residents completed a pretest on a colonoscopy simulator, which measured time to completion, time to reach the cecum, efficiency of screening, percentage of mucosal surface area examined, time the patient was in pain, and time with a clear view. Residents assigned to the SO and EO conditions reviewed a video of their own performances (SO) or an expert's performance (EO). Residents in all conditions engaged in practice trials using an abstract endoscopy training exercise. Residents then completed a posttest. Self-assessment was examined by calculating discrepancy scores by subtracting actual measurements from participant judgments.
Results:
Results indicated that performance for participants in the PO group significantly improved from pretest to posttest for 2 of the 6 metrics and participants in the SO and EO groups improved for 4 metrics. In terms of self-assessment discrepancy scores, only the EO group significantly improved for 2 of the 6 metrics (overall time and screening efficiency).
Discussion:
Novice trainees are inaccurate self-assessors of their endoscopic skills before training. Allowing trainees to watch videos of themselves or an expert performing an endoscopic task enhances performance. Participants assigned to PO exhibited decreased ability to accurately judge their own performance. Those in the EO group became significantly better at assessing their overall time and overall efficiency.
Summary:
Novice trainees are inaccurate self-assessors of their endoscopic skills before training. Allowing trainees to watch videos of themselves or an expert performing an endoscopic task enhances performance.
Related Concept Videos
Endoscopic Procedures I: Esophagogastroduodenoscopy
During an EGD, the endoscope can be used to:
Endoscopic Procedures IV: Sigmoidoscopy and Laproscopy
Sigmoidoscopy
Sigmoidoscopy is a diagnostic procedure that uses a flexible sigmoidoscope equipped with a light source and camera to examine the rectum and sigmoid colon. The procedure involves inserting the tube through the anus...
Endoscopic Procedures V: ERCP
Patient...
Endoscopic Studies I: Bronchoscopy and Thoracoscopy
Bronchoscopy
Description
Bronchoscopy is a procedure that involves direct visualization of the larynx, trachea, and bronchi for diagnostic and therapeutic purposes. A flexible fiber optic or rigid bronchoscope is used to carry out the procedure. The fiber-optic bronchoscope is more frequently used due...
Endoscopic Procedures II: Colonoscopy
Assessment of the Rectum and Anus
Rectal Inspection
Begin by inspecting the perianal and anal areas for color, texture, rashes,...

