Niels V Johnsen1, David F Penson2, W Stuart Reynolds2, Douglas F Milam2, Roger R Dmochowski2, Melissa R Kaufman2. 1. Department of Urological Surgery, A-1302 Medical Center North, Vanderbilt University Medical Center, Nashville, TN, 37232, USA. niels.v.johnsen@vanderbilt.edu. 2. Department of Urological Surgery, A-1302 Medical Center North, Vanderbilt University Medical Center, Nashville, TN, 37232, USA.
Abstract
PURPOSE: To compare the cost-effectiveness of various treatment strategies in the management of pelvic fracture urethral injuries using decision analysis. METHODS: Five strategies were modeled from the time of injury to resolution of obstructed voiding or progression to urethroplasty. Management consisted of immediate suprapubic tube (SPT) placement and delayed urethroplasty; primary endoscopic realignment (PER) followed by urethroplasty in failed patients; or PER followed by 1-3 direct vision internal urethrotomies (DVIU), followed by urethroplasty. Success rates were obtained from the literature. Total medical costs were estimated and incremental cost-effectiveness ratios (ICERs) were generated over a 2-year follow-up period. RESULTS: PER was preferred over SPT placement in all iterations of the model. PER followed by a single DVIU and urethroplasty in cases of failure was least costly and used as the referent approach with an average cost-effectiveness of $17,493 per unobstructed voider. The ICER of a second DVIU prior to urethroplasty was $86,280 per unobstructed voider, while the ICER of a third DVIU was $172,205. The model was sensitive to changes in the success rate of the first DVIU, where when the probability of DVIU success is expected to be less than 32% immediate urethroplasty after failed PER is favored. CONCLUSIONS: Management of pelvic fracture urethral injuries with PER is the preferred management strategy according to the current model. For those who fail PER, a single DVIU may be attempted if the presumed success rate is >32%. In all other cases, urethroplasty following PER is the preferred approach.
PURPOSE: To compare the cost-effectiveness of various treatment strategies in the management of pelvic fracture urethral injuries using decision analysis. METHODS: Five strategies were modeled from the time of injury to resolution of obstructed voiding or progression to urethroplasty. Management consisted of immediate suprapubic tube (SPT) placement and delayed urethroplasty; primary endoscopic realignment (PER) followed by urethroplasty in failed patients; or PER followed by 1-3 direct vision internal urethrotomies (DVIU), followed by urethroplasty. Success rates were obtained from the literature. Total medical costs were estimated and incremental cost-effectiveness ratios (ICERs) were generated over a 2-year follow-up period. RESULTS: PER was preferred over SPT placement in all iterations of the model. PER followed by a single DVIU and urethroplasty in cases of failure was least costly and used as the referent approach with an average cost-effectiveness of $17,493 per unobstructed voider. The ICER of a second DVIU prior to urethroplasty was $86,280 per unobstructed voider, while the ICER of a third DVIU was $172,205. The model was sensitive to changes in the success rate of the first DVIU, where when the probability of DVIU success is expected to be less than 32% immediate urethroplasty after failed PER is favored. CONCLUSIONS: Management of pelvic fracture urethral injuries with PER is the preferred management strategy according to the current model. For those who fail PER, a single DVIU may be attempted if the presumed success rate is >32%. In all other cases, urethroplasty following PER is the preferred approach.
Authors: Niels Vass Johnsen; Rachel A Moses; Sean P Elliott; Alex J Vanni; Nima Baradaran; Garrick Greear; Thomas G Smith; Michael A Granieri; Nejd F Alsikafi; Bradley A Erickson; Jeremy B Myers; Benjamin N Breyer; Jill C Buckley; Lee C Zhao; Bryan B Voelzke Journal: World J Urol Date: 2019-05-29 Impact factor: 4.226