Development of a surgical decision aid for patients with nephrolithiasis: Shockwave lithotripsy versus ureteroscopy.

INTRODUCTION AND OBJECTIVE: Shared decision-making is recommended to guide medical/surgical treatment strategies. We aimed to develop a surgical decision aid (SDA) facilitating decision-making between ureteroscopy (URS) or shockwave lithotripsy (SWL) in patients with symptomatic nephrolithiasis.

METHODS: The SDA scope was identified through discussions with patients and urologists in the Michigan Urological Surgery Improvement Collaborative (MUSIC). Steering committee of patient advocates, MUSIC coordinating center, content experts, biostatisticians and urologists was formed. Content domains were assessed through best available evidence and content experts. For content validation we anonymously surveyed 35 MUSIC urologists. Content Validity Ratios (CVR), numeric value indicating degree of expert validity, were calculated. Face validation interviews were conducted with patient advocates.

RESULTS: SDA prototype using descriptive plain language and pictorial information was designed for nephrolithiasis patients, candidates for SWL or URS. It first provides patients procedural education while the second section informs urologists of patient goals. Six content domains were chosen: anesthesia type, effectiveness, number of procedures, risk, pain and recovery. 91.4% and 85.7% of MUSIC urologists indicated that each section accomplished their goals, respectively. Anesthesia received an unacceptable CVR. High levels of face validation overall were reported with unacceptable scoring for anesthesia and recovery.

CONCLUSIONS: We developed a SDA facilitating treatment choice between SWL and URS with promising content and face validity. Agreement and contradiction between anesthesia type and recovery validation results indicate the importance of shared decision-making and the need for a validated SDA. Future work should focus on the SDAs value and opportunities for refinement in practice.