Overview
Sacral neuromodulation (SNM) is a therapy for overactive bladder, non-obstructive urinary retention and fecal incontinence. A small device sends mild electrical pulses to the sacral nerves, which help control the bladder and bowel.
It is usually considered when lifestyle changes, pelvic floor therapy and medication have not worked well enough or were not tolerated. An evaluation period lets you test the therapy first.
Watch: how Sacral Neuromodulation works
Video: “How Medtronic Bladder Control (InterStim™) Therapy Works” from Medtronic Bladder and Bowel Health on YouTube. It loads from youtube-nocookie.com only when you press play. Shown for general education; GSMC did not produce it. Watch on YouTube
How it works
A thin lead is placed near the sacral nerve through a small opening in the low back. During the evaluation, it is connected to an external device. If symptoms improve, a small rechargeable or non-rechargeable device is implanted under the skin of the upper buttock.
Who it may be for
- Overactive bladder or urge incontinence
- Non-obstructive urinary retention
- Fecal (bowel) incontinence
- Symptoms not adequately improved with conservative care or medication
Your exam and imaging decide whether this treatment is appropriate for you.
What to expect
- Evaluation: a temporary or staged lead is tested over days to weeks while you keep a symptom diary.
- Implant: if symptoms improve, the long-term device is placed in an outpatient procedure.
- Follow-up: programming adjustments as needed.
Recovery
Most patients return to normal activities within a few weeks, with limits on heavy lifting at first. Your instructions may differ.
Risks and side effects
Every procedure has risks. Your physician will review them with you, including:
- Pain at the implant site
- Lead movement
- Infection
- Undesirable changes in bowel or bladder function
- Need for revision
Insurance and cost
Many plans, including Medicare, may cover this treatment when criteria are met. We verify benefits before scheduling. See accepted insurance.
Frequently asked questions
Will I be able to test it first?
Yes. An evaluation period lets you see whether symptoms improve before a long-term device is implanted.
Is the therapy reversible?
Yes. The device can be turned off or removed.
Who performs this at GSMC?
Please call us to confirm which GSMC physician and office offer this therapy.
This page is general patient education and does not replace advice from your own clinician. Individual results vary.