Intravesical Botox Instillation
What is intravesical Botox instillation?
Intravesical Botox instillation is a minimally invasive procedure in which botulinum toxin (Botox) is injected into the bladder wall to help relax the bladder muscle. By reducing excessive bladder contractions, it can improve symptoms such as urinary urgency, frequency and incontinence. This treatment is commonly used when other medications or therapies for bladder overactivity have not been effective or are not tolerated. The procedure is performed through a small telescope passed into the bladder and usually requires only a short recovery time.
Why is it needed?
Intravesical Botox may be recommended for people with overactive bladder symptoms that do not improve with oral medications or behavioural therapies. It is often used when urgency, frequency or leakage continue to affect daily activities despite standard treatment.
It may also be recommended for individuals with neurogenic bladder dysfunction caused by neurological conditions such as spinal cord injury, multiple sclerosis or spina bifida. For people who cannot tolerate oral bladder medications or who require longer lasting control of bladder overactivity, Botox instillation can provide a valuable alternative.
What happens during the procedure?
The procedure is usually performed under local anaesthetic, although sedation or general anaesthesia may be used in some cases. A fine telescope, called a cystoscope, is gently inserted through the urethra into the bladder.
Using a fine needle passed through the scope, Botox is injected into multiple small areas of the bladder wall. The number of injections depends on the total dose being administered. The procedure typically takes ten to twenty minutes and is commonly performed as a day case. After the injections, a short period of observation is required before discharge.
What are the alternatives?
Several alternatives may be considered depending on symptoms and previous treatments. Bladder training and pelvic floor therapy may help retrain bladder habits and improve symptom control. Oral medications such as anticholinergics or beta-3 agonists can reduce bladder overactivity for many individuals.
Neuromodulation therapies, including sacral nerve stimulation or tibial nerve stimulation, may be an option for people who prefer non-pharmacological treatments. In severe or resistant cases, surgical procedures such as bladder augmentation may be considered, although these are typically reserved for specific circumstances.
Potential risks and after effects
Intravesical Botox is generally very safe, but some temporary side effects can occur. Mild burning or discomfort when passing urine is common during the first one to two days. A small amount of blood in the urine may appear temporarily. Some individuals may develop a urinary tract infection following the procedure, which may require antibiotics.
Temporary difficulty emptying the bladder can occur and may require intermittent self-catheterisation for a short period. Flu-like symptoms or allergic reactions are rare. The effects of treatment usually last six to twelve months and repeat injections may be needed as symptoms return. Most side effects settle without long-term consequences.
After the procedure
Most people can go home the same day. Drinking plenty of fluids for the first twenty-four to forty-eight hours helps flush the bladder and reduce irritation. Mild discomfort or spotting when urinating is common for a short period.
It is advisable to avoid strenuous activity or sexual intercourse for twenty-four hours. Medical review should be sought if fever, chills, severe pain or difficulty passing urine develop.
Follow-up care
Follow-up usually includes a review appointment within two to four weeks to assess the effect of treatment and ensure the bladder is emptying properly. Monitoring of post-void residual urine may be performed to ensure safe bladder function.
Repeat treatments can be arranged every six to twelve months depending on symptom recurrence. Long-term care is usually provided by a urologist or continence nurse to help maintain bladder control and monitor treatment effectiveness.
Bladder Procedures
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