Acute Urinary Retention — Management Pathway

Step-by-step decision

Choose step by step as prompted; reaching an endpoint gives the management recommendation. You can go back a step or restart anytime.

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Full pathway

1. [Decision] Is urethral catheterization feasible?
   Is urethral catheterization feasible? (Sudden painful inability to void, clinically obvious (suprapubic distension/pain, palpable/percussible bladder), confirmed by ultrasound; in men >50 the most common cause is BPH, otherwise prostate cancer/urethral stricture/clot/constipation/prostatitis-UTI/anticholinergic-sympathomimetic drugs/postoperative/neurogenic.)
   • Urethral catheterization contraindicated/repeatedly failed (recent urological surgery/stricture/disruption) → Catheterization contraindicated → suprapubic catheter
   • Urethral catheter decompression feasible → Catheter decompression · alpha-blocker + voiding trial
2. [End] Catheter decompression · alpha-blocker + voiding trial
   Immediate bladder decompression — urethral catheter (16F Foley) is first-line for rapid complete drainage; record the initial residual volume, beware post-obstructive diuresis (if drainage >1 L, monitor for hypotension/electrolytes and replace fluids); find and treat the cause (stop inciting drugs, relieve constipation, treat infection); for BPH start an alpha-blocker (tamsulosin/alfuzosin/silodosin) with catheterization, then a trial without catheter at 2–3 days (do not exceed 3–5 days); failure → re-catheterize/intermittent self-catheterization/surgery (TURP).
3. [End] Catheterization contraindicated → suprapubic catheter
   Urethral catheterization contraindicated (recent prostate/urethral surgery, urethral stricture/disruption, repeated failure): suprapubic cystostomy for decompression (ultrasound-guided is safer); likewise record the residual volume, prevent post-obstructive diuresis; urgent urology referral to manage the cause.

Source guidelines & references

• Acute urinary retention (EAU/AUA; BPH management guidelines)

This pathway is our own synthesis of the decision logic in the guidelines above (not the guideline verbatim); thresholds and workflows change as guidelines update — in practice follow the latest guideline, your institution's protocol and the individual patient.

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