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. 2024 Jan 20;42(1):44.
doi: 10.1007/s00345-023-04728-x.

Development and validation of a novel home-made bench-top training model for retrograde intrarenal surgery

Jingfei Teng  1 , Chong Ma  1 , Feng Gao  1 , Xiao Luo  1 , Yawei Guan  1 , Zhihui Li  1 , Li Yao  2 , Xing Ai  3
Affiliations

Development and validation of a novel home-made bench-top training model for retrograde intrarenal surgery

Jingfei Teng et al. World J Urol. .

Abstract

Purpose: To develop and validate a low-cost homemade bench-top training model to facilitate retrograde intrarenal surgery (RIRS) training.

Methods: The RIRS training model (G-Model) was developed using a surgical glove and a recycled ureter access sheath. Fifteen participants including 10 residents and 5 urologists were enrolled. Designed training curriculum for residents was carried out. Face validity, content validity, construct validity and criterion validity evaluation of the G-Model were carried out.

Results: The global score of face and content validity was 4.15 ± 0.53 and 4.65 ± 0.29, respectively. For construct validity, the overall modified global rating scale (mGRS) score was significantly improved [12.5 (5.25) vs. 24.0 (5.25), p = 0.004], and the total task time was significantly shortened (39.5 ± 4.48 min vs. 24.1 ± 3.81 min, p < 0.001) within residents after G-Model training. The baseline mGRS score and total task time of residents were poorer than those of urologists [12.5 (5.25) vs. 32.0 (1.00), p < 0.001; 39.5 ± 4.48 min vs. 16.0 ± 1.58 min, p < 0.001]. Spearman correlation analysis revealed strong correlations between residents' G-Model and real patient performance.

Conclusion: The current study presented a valid low-cost easily accessible RIRS bench-top training model which could facilitate skill acquisition and translate to real-life scenario.

Keywords: Bench-top; Flexible ureteroscopy; Retrograde intrarenal surgery; Simulator; Training.

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