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Published on: December 11, 2017
Association between surgeon procedure volume and reoperation rates for penile prosthesis implantation
Juan J Andino1, Navid Leelani2, Ryoko Sato3
1University of California Los Angeles Health Urology, Santa Monica, Los Angeles, CA 90404, United States.
Background:
Prior studies have examined patient-specific predictors of reoperation following penile prosthesis (PP) insertion at the local and regional level, but little is known about patient factors and volume-outcome relationships at the national level.
Aim:
To assess the impact of patient characteristics and surgeon volume on reoperation rates following PP placement in a Medicare population.
Methods:
We utilized the 100% Medicare Standard Analytical Files to identify men aged ≥65 years who underwent PP implantation between 2018 and 2021. Surgeon volume data were obtained from the Atlas All-Payor Claims dataset, and quartiles were calculated. Multivariable logistic regression was used to evaluate associations between reoperation rates, patient characteristics, and surgeon volume.
Outcomes:
The reoperation rate at 1-year post-implantation, the cause of reoperation, and factors associated with a higher reoperation rate.
Results:
Among 8343 patients, 2.3% required reoperation at 90 days and 6.3% at 1 year. The most common comorbidities were diabetes (35.2%), cardiovascular disease (23.9%), Peyronie's disease (15.4%), and obesity (11.5%). Surgeon volume quartiles were calculated, with the highest-volume surgeons performing >31 cases annually versus <6 for the lowest quartile. Lower surgeon volume, older patient age, and smoking were associated with higher reoperation rates. Patients treated by top-quartile surgeons had 25%-28% lower odds of reoperation at 1 year [OR 0.72; 95% CI 0.56-0.93; OR 0.75; 95% CI 0.59-0.97].
Clinical Implications:
While higher surgeon volume was associated with lower reoperation rates, PP surgery remained safe across all volume levels.
Strengths And Limitations:
Strengths include the use of a nationally representative Medicare dataset and All-Payor volume-outcome analysis. Limitations include accuracy of claims data, inability to fully characterize reoperations, and lack of data for procedures performed in ambulatory surgery centers.
Conclusion:
In a nationally representative Medicare cohort, PP reoperation rates were low (6.3%), with mechanical complications accounting for 41% of reoperations (2.6% of the cohort). Higher-volume surgeons had lower reoperation rates, but outcomes remained acceptable across all volume levels, reinforcing the overall safety of the procedure.
