Validation of a Potato Tissue-based Transurethral Resection of the Prostate Endotrainer Model as a Training Tool

Objective: The objective of the study was to describe and validate a potato tissue-based endotrainer for training in transurethral resection of the prostate (TURP). Materials and Methods: A novel potato model was devised for TURP simulation. Trainees and experts performed resection on the potato model, and reported their observations on a specifically designed questionnaire. Face validity, content validity, and construct validity were assessed. An independent t -test was used for statistical assessment. Results: The mean overall rating for the experience on the potato-based TURP model for experts was 4.18 ± 0.68. The content validity of the study for trainees was 3.50 ± 0.38 and for experts was 4.44 ± 0.63. The construct validity was rated by trainees as 3.77 ± 0.43 and by experts as 6.57 ± 1.59. The expert group resected more tissue 8.5 ± 0.58 g versus 5.22 ± 0.52 g by trainees ( P = 0.008) and were better at sparing the bladder neck ( P = 0.0005) than the trainees. Sixty-six percent of trainees reached a predetermined objective level of competence, defined arbitrarily as 6.5 g resected in 10 min and 4 cm chip length. Conclusions: This model is a suitable low-cost option for a novice to learn the basic motor skills of TURP.