Do Urodynamic Findings Other Than Outlet Obstruction Influence the Decision to Perform a Transurethral Resection of Prostate?

OBJECTIVE: To determine if urodynamic findings other than high-pressure voiding influence the decision to perform a transurethral resection of prostate (TURP). METHODS: Four clinical scenarios were created featuring a healthy 65-year-old man. An electronic survey was distributed to members of the International Continence Society and the Society for Urodynamics, Female Pelvic Medicine and Urogenital Reconstruction. RESULTS: Eighty-six urologists responded (median age was 45-54 years, 62% described their practice as academic). Scenario 1: an incidental residual urine >1 L with detrusor underactivity. The majority (76%) would offer a TURP; however, the estimated chance that the residual volume would improve was only 57%. Scenario 2: retention with detrusor overactivity but no voluntary voiding contraction. The majority (72%) would offer a TURP; however, the average chance quoted that he would void was only 48%. Scenario 3: catheter-dependent retention and an underactive detrusor. The majority (89%) would offer a TURP; however, the average chance quoted that he would void was only 53%. Scenario 4: a man with only frequency and urgency, but urodynamic bladder outlet obstruction. The majority (90%) would offer him a TURP; however, the average chance that his frequency and urgency would improve was only 64%, and the average estimated postoperative risk of urgency incontinence was 33%. Willingness to offer TURP did not correlate with physician characteristics. CONCLUSION: Urodynamic findings other than bladder outlet obstruction were associated with modest perceived outcomes after TURP; however, despite this, urologists are still willing to offer this intervention.

Evaluation and management of outlet obstruction in women without anatomical abnormalities on physical exam or cystoscopy.

Bladder outlet obstruction (BOO) in women can be either anatomic or functional. Anatomic causes for BOO are often readily apparent by history and physical exam. On the other hand, causes for functional obstruction, including dysfunctional voiding, primary bladder neck obstruction, and detrusor-external sphincter dyssynergia, are more difficult to establish. Because the appropriate treatment for functional obstruction drastically varies according to etiology, making an accurate diagnosis is paramount. Videourodynamics, interpreted in the context of individual clinical symptoms, remains the diagnostic gold standard in women with functional obstruction.