Vesicovaginal Fistula Repair Simulation Model and Hierarchical Task Analysis

Abstract

Importance: There is a need for surgeons skilled in vesicovaginal fistula (VVF) repair, yet training opportunities are limited.

Objectives: This study aimed to create a low-fidelity simulation model for transvaginal VVF repair, identify essential steps of VVF repair, and evaluate the model's ability to replicate essential steps.

Study design: First, a low-fidelity VVF repair simulation model was designed and built by the authors. Next, a hierarchical task analysis was performed by urogynecologic surgeons with expertise in VVF repair. Each expert submitted an outline of tasks required to perform VVF repair. To control for bias, an education specialist de-identified, reviewed, and collated the submitted outlines. The education specialist then led a focus group, and through a modified Delphi process, the experts reached consensus on the essential steps. A separate group of urogynecologic surgeons then tested the model and completed an anonymous questionnaire assessing how well the model replicated the essential steps. Descriptive analyses were performed.

Results: Five experts submitted an outline of steps for transvaginal VVF repair, and 4 experts participated in a focus group to reach consensus on the essential steps. Nine urogynecologic surgeons, with a median of 10 years in practice (interquartile range, 7-12 years), tested the model and completed the postsimulation questionnaire. Most testers thought that tasks involving identification and closure of the fistula were replicated by the model. Testers thought that tasks involving cystoscopy or bladder filling were not replicated by the model.

Conclusions: We developed a novel, low-fidelity transvaginal VVF repair simulation model that consistently replicated tasks involving identification and closure of the fistula.