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Validation of a Novel Inverted Peg Transfer Task: Advancing Beyond the Regular Peg Transfer Task for Surgical
Amro M Abdelrahman1, Denny Yu2, Bethany R Lowndes1
1Mayo Clinic Robert D. and Patricia E. Kern Center for the Science of Health Care Delivery, Mayo Clinic, Rochester, Minnesota; Department of Health Sciences Research, Mayo Clinic, Rochester, Minnesota.
The novel inverted peg transfer (iPT) task effectively assesses advanced laparoscopic skills in surgical trainees, demonstrating higher sensitivity and specificity than the regular peg transfer (rPT) task. This makes iPT a valuable tool for surgical simulation curricula.
Area of Science:
- Surgical Education
- Minimally Invasive Surgery
- Medical Simulation
Background:
- Assessing advanced laparoscopic skills is crucial for surgical trainees to ensure patient safety in the operating room.
- The regular peg transfer (rPT) task is a standard but may not fully differentiate skill levels.
- Novel simulation tasks are needed to accurately evaluate surgical competency.
Purpose of the Study:
- To evaluate the validity of a new inverted peg transfer (iPT) task for assessing laparoscopic skills.
- To compare the iPT task's effectiveness against the regular peg transfer (rPT) task.
- To determine if iPT can reliably distinguish between novice and expert laparoscopic surgeons.
Main Methods:
- A prospective crossover study design was employed.
- Novices (medical students, surgical interns) and experts (experienced laparoscopic surgeons) performed both iPT and rPT tasks.
- Performance metrics including completion time, errors, and a normalized performance score were recorded and analyzed.
Main Results:
- Both novices and experts performed significantly worse on the iPT task compared to the rPT task (p < 0.05).
- The iPT task showed significant differences in completion time and performance scores between novices and experts (p < 0.01).
- The iPT task demonstrated higher sensitivity (0.91) and specificity (0.91) in differentiating skill levels compared to rPT (0.69).
Conclusions:
- The inverted peg transfer (iPT) task is a valid and effective tool for assessing advanced laparoscopic skills in surgical trainees.
- iPT exhibits superior sensitivity and specificity compared to the rPT task for skill assessment.
- Incorporating iPT into surgical simulation curricula is recommended for accurate training and assessment in advanced minimally invasive surgery.
