Reversing urinary retention depends on what’s causing it. Acute retention, where you suddenly can’t urinate at all, requires immediate bladder drainage with a catheter. Chronic retention, where your bladder never fully empties, can often be improved or resolved through medications, behavioral techniques, or procedures that address the underlying obstruction or nerve problem.
Acute Retention Requires Immediate Drainage
If you suddenly cannot urinate and your bladder feels painfully full, this is a medical emergency. The first step is catheterization to decompress the bladder. A thin, flexible tube is inserted through the urethra (or occasionally through the lower abdomen) to drain the urine. After the catheter is placed, the bladder is typically allowed to drain continuously for at least three days.
Some people are harder to catheterize, particularly if they have a history of urethral narrowing or prior difficult catheterizations. In those cases, a doctor may use a curved-tip catheter, place one using a small camera, or insert a catheter directly through the skin above the pubic bone. This last option, called a suprapubic catheter, tends to be more comfortable and carries a lower risk of infection or needing replacement.
Medications That Help Restore Normal Voiding
For retention caused by an enlarged prostate, alpha-blocker medications are the most common first-line treatment. These drugs relax the smooth muscle in the prostate and bladder neck, reducing the physical squeeze on the urethra that blocks urine flow. Tamsulosin and alfuzosin are the most widely used options, and multiple well-designed trials show they significantly improve the chances of urinating successfully after a catheter is removed. Alfuzosin in particular has strong evidence for improving what urologists call a “trial without catheter,” the test where the catheter comes out and doctors check whether you can void on your own.
Alpha-blockers work relatively quickly compared to other prostate medications and don’t carry the sexual side effects associated with drugs that shrink the prostate over time (like finasteride). For men with significantly enlarged prostates, doctors sometimes combine both types of medication for a more complete effect.
Check Whether a Medication Is the Cause
A surprising number of common medications can trigger or worsen urinary retention. If your retention started around the same time as a new prescription or even an over-the-counter drug, the fix may be as straightforward as switching medications.
- Antihistamines and cold medications: Oral decongestants increase muscle tone in the prostate and bladder neck, physically tightening the outflow path. This is one of the most common drug-related causes.
- Tricyclic antidepressants: These reduce the bladder muscle’s ability to contract, making it harder to push urine out.
- Anti-inflammatory painkillers (NSAIDs): Men using these drugs are roughly twice as likely to experience acute retention, likely because the drugs interfere with chemical signals that help the bladder muscle contract.
- Overactive bladder drugs: Ironically, medications prescribed for urgency and frequency (like oxybutynin) work by suppressing bladder contractions, which can tip some people into retention.
- Heart rhythm medications: Certain antiarrhythmics carry anticholinergic properties that affect bladder function.
If a medication is contributing, your doctor can often find an alternative that doesn’t affect the bladder. Never stop a prescribed medication on your own, but do bring a complete medication list (including over-the-counter drugs) to your appointment.
Double Voiding and Other Behavioral Techniques
For chronic retention where you can still urinate but don’t fully empty, behavioral strategies can meaningfully reduce the amount of urine left behind.
Double voiding is the most effective self-help technique. Here’s how it works: sit comfortably on the toilet and lean slightly forward, resting your hands on your knees or thighs. This positioning tilts the bladder into the best angle for drainage. Urinate as normally as you can, focusing on emptying completely. Then stay seated and wait 20 to 30 seconds. Lean slightly further forward and urinate again. You can also try rocking gently side to side, which helps shift remaining urine toward the outlet. Some people find that standing up, walking around for about 10 seconds, and then sitting back down produces a better second void.
These techniques won’t fix an obstruction, but they can reduce your residual urine volume enough to lower your risk of infections and improve comfort between medical treatments.
Intermittent Self-Catheterization
When behavioral techniques aren’t enough and surgery isn’t the right option yet, clean intermittent catheterization lets you drain your bladder on a schedule throughout the day. You insert a thin catheter yourself, drain the urine, and remove it. Most people using this as their primary emptying method catheterize four to six times daily, spacing sessions so the bladder doesn’t hold more than about 500 mL at any point. If you can still partially void on your own, you may only need to catheterize one to three times a day to clear what’s left.
The technique sounds intimidating, but most people learn it quickly with guidance from a nurse. It’s a well-established method for managing retention that isn’t resolving on its own, and it protects your kidneys from the back-pressure that chronic retention can create.
Surgical Options for Prostate Obstruction
When medications aren’t enough, especially for retention caused by significant prostate enlargement, several procedures can physically open the blocked channel. The choice depends on prostate size, your overall health, and how important it is to preserve sexual function.
Laser enucleation (HoLEP) is considered the gold standard for larger prostates. The surgeon uses a laser to remove the obstructing prostate tissue from the inside. Despite historical concerns about incontinence, large-scale data shows long-term stress and urge incontinence rates of only about 1.4%. Many centers now perform this as a same-day procedure.
Water vapor thermal therapy (Rezum) uses steam injections to shrink prostate tissue over several weeks. Four-year results from a randomized controlled trial show durable symptom relief with a relatively low rate of patients needing additional surgery or going back on medication afterward. It’s a less invasive option that preserves sexual function in most men.
Prostatic urethral lift (UroLift) uses small implants to pin open the obstructing prostate lobes, like pulling back curtains. Five-year data shows rapid improvement in symptoms, though a significant number of patients eventually need retreatment or resume medication. It’s best suited for men with moderate obstruction who prioritize a quick, minimally invasive procedure.
Nerve Stimulation for Non-Obstructive Retention
Some people retain urine not because of a physical blockage but because the nerves controlling the bladder aren’t signaling properly. This can happen after spinal injuries, with neurological conditions like multiple sclerosis, or sometimes without a clear cause. When medications and behavioral strategies fail, sacral neuromodulation offers a targeted solution.
The treatment works like a pacemaker for the bladder. A small device implanted near the tailbone sends mild electrical pulses to the nerves that control bladder function. Before committing to permanent implantation, you undergo a test phase with a temporary electrode. If your symptoms improve by more than 50%, you’re a candidate for the permanent device.
The results for urinary retention are striking. In a randomized controlled trial, 69% of patients with the implant were able to stop catheterizing entirely at six months, compared to just 9% in the control group. When including patients who achieved at least a 50% reduction in catheterization, the success rate rose to 83%. Across multiple studies, roughly 54% of patients with non-obstructive retention achieve major improvement, with some series reporting success rates above 80%.