- Design
- Retrospective statewide claims cohort
- Population
- 11,519 men without prior overactive bladder medication undergoing BPH surgery, 2017–2022
- Primary outcome
- New anticholinergic or beta-3 agonist fill 3–12 months after surgery
- Effect
- 12-month incidence 5.7% (TUMT) to 11% (PVP); PVP vs TURP HR 1.49 (1.25–1.79)
This statewide claims study from Michigan identified 11,519 men who had BPH surgery between 2017 and 2022 and had never taken an anticholinergic or beta-3 agonist. It measured how many filled a new prescription for one between 3 and 12 months after surgery.
Twelve-month cumulative incidence ranged from 5.7% after microwave thermotherapy to 11% after laser photovaporisation. Compared with TURP, photovaporisation carried a higher hazard of starting medication (HR 1.49, 95% CI 1.25–1.79). Previous BPH medication and anticoagulant use were associated with higher risk, while being catheter-dependent before surgery was associated with lower risk.
Prescription fills are a proxy for bothersome storage symptoms, and the comparison between procedures is observational. But these are real-world, procedure-specific numbers a surgeon can quote, and they make counselling about post-operative storage symptoms concrete.
- Quote a 6–11% chance of needing new bladder medication within a year, depending on procedure.
- Mention the higher rate after laser photovaporisation when choosing a technique.
- Flag men on anticoagulants or previous BPH drugs as higher risk for persistent storage symptoms.
- Catheter-dependent men were less likely to need bladder medication afterwards.
- Review storage symptoms at three months before attributing them to failed surgery.
Why it matters
It gives surgeons numbers instead of a vague warning when consenting for BPH procedures.
Don't overread it
Prescription claims, not symptom scores; differences between procedures may reflect patient selection.
The statistics, in plain English
An HR of 1.49 means about a 50% higher rate of starting medication after photovaporisation than after TURP. Because the baseline rates are around 6–11%, the absolute differences between procedures are a few percentage points.
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