Sacral Nerve Stimulation for Fecal Incontinence: An Informative Guide

Introduction and Terminology of the Procedure

Sacral Nerve Stimulation (SNS) is a proven treatment option for Fecal Incontinence (FI). It involves the surgical insertion of a device that sends electrical signals to the sacral nerves, which control bowel function. The technique serves to manage and regulate bowel movements, significantly reducing episodes of incontinence.
This treatment is commonly referred to as sacral neuromodulation, and the device used is often known as an ‘implantable pulse generator’. In the United States, it is estimated that thousands of people have benefited from SNS, with the numbers growing as more people become aware of this treatment option.

Indications for Sacral Nerve Stimulation

Sacral Nerve Stimulation is considered for people who have failed to respond to conservative treatment methods for Fecal Incontinence, such as dietary changes, medications, or pelvic floor muscle training. It is crucial to understand that this treatment might not be suitable for everyone. Here are some of the common indications:

• Chronic fecal incontinence: SNS is most often considered for those with chronic, severe fecal incontinence that has persisted for more than six months.
• Failed conservative treatments: Patients who have tried other treatment methods without success could be good candidates for SNS.
• Ability to undergo surgical procedure: Being in a physical condition to undergo a surgical procedure is important.
• Inability to tolerate other treatments: Some patients might not tolerate medication due to side effects or may have contraindications to other forms of therapy.
• Non-obstructive fecal incontinence: SNS is typically indicated for non-obstructive FI, where the issue lies in the control of bowel movements, not in the passage of stools.

Always discuss your specific condition and potential benefits and risks with your doctor before deciding on this procedure.

Pre-Op Preparation

Preparing for the SNS procedure involves several steps to ensure your safety and the success of the treatment. The following are general guidelines and may vary based on individual circumstances:

• Fasting: It’s common to be instructed to refrain from eating or drinking for several hours before the procedure.
• Adjustments to medications: Some medications, especially those affecting blood clotting, may need to be stopped or adjusted. Always consult your doctor.
• Pre-op labs or imaging: Pre-operative labs or imaging might be required to confirm your suitability for the procedure.
• Pre-clearance authorization: Ensure your procedure has been authorized by your insurance company to avoid any financial surprises.
• Transportation: Arrange for someone to drive you home after the procedure as you may be drowsy from the anesthesia.
• Work or school notes: Ask your doctor for a note if you need to miss work or school.

Remember to contact your doctor for the exact instructions as certain circumstances might warrant different approaches. Our telemedicine primary care practice can assist you with pre-operative clearances and ordering of pre-op labs and imaging.

Procedure Technique for Sacral Nerve Stimulation

Understanding the step-by-step process of the Sacral Nerve Stimulation (SNS) procedure can be helpful for patients about to undergo this treatment. This section simplifies the complex medical process, allowing you to have a clear idea of what will occur during the procedure.

A. Initial Consultation and Testing

Your doctor will discuss your symptoms, medical history, and previous treatments for Fecal Incontinence (FI). They might perform or order certain tests to assess your condition. If SNS is considered appropriate, your doctor will explain the procedure, including its benefits, risks, and potential complications.

B. Peripheral Nerve Evaluation (PNE) or Trial Stimulation

Before the complete device is implanted, a trial stimulation period is generally recommended. This step involves placing a temporary wire under your skin, near the sacral nerves, which control your bowel movements. This wire is connected to an external device that generates electrical pulses. The trial stimulation allows your doctor to assess if SNS will effectively reduce your symptoms of FI.

C. Implantation Procedure

Once the trial stimulation shows positive results, you’ll proceed to the implantation of the permanent device. This procedure is usually done under local anesthesia and sedation, though general anesthesia may also be an option. Here’s what you can expect:

• 1. Placement: You’ll lie face down on the operation table. Your back will be cleaned and a local anesthetic applied to numb the area.
• 2. Incision: The surgeon will make a small incision in your lower back, near the tailbone, to insert the permanent electrode lead near the sacral nerves.
• 3. Positioning: The surgeon uses live X-ray guidance (fluoroscopy) to guide the electrode into the correct position. The lead is then tested to make sure it’s stimulating the right nerves.
• 4. Implanting the generator: Once the lead is in place, the surgeon will make a second incision, usually in your upper buttock. This is where the pulse generator, the device that produces the electrical pulses, will be placed. The lead is then connected to this generator.
• 5. Closure: Once everything is in place and functioning correctly, the surgeon will close the incisions with stitches or staples.

It’s important to note that while this is a standard guide, the exact process may vary depending on your individual case, the specific techniques your surgeon uses, and other factors.

This information is designed to help you understand the process and feel more at ease going into the procedure. However, make sure to have any questions or concerns addressed by your healthcare provider.

Adverse Events with Sacral Nerve Stimulation

Like any medical procedure, Sacral Nerve Stimulation (SNS) can have potential adverse events. The occurrence of these varies, but they are generally rare. The mortality rate from the procedure is less than 0.1% (very rare).

• Pain at implant site (30%): This is the most common adverse event. Pain may occur due to the surgical process or nerve stimulation. It usually diminishes over time and can be managed with pain medication.
• Lead migration (3-5%): This refers to the movement of the lead (the wire that carries electrical signals) from its originally placed position, which may result in reduced effectiveness. If this happens, a minor procedure to reposition the lead may be needed.
• Infection (3-4%): This can occur post-procedure and is typically managed with antibiotics. In some cases, removal of the device may be required if the infection is serious.
• Technical malfunctions (2-3%): This refers to issues with the device itself, such as battery failure. Such instances may require a replacement or adjustment of the device.

Alternatives to Sacral Nerve Stimulation

While SNS has proven effective for many patients with Fecal Incontinence (FI), there are other treatment options to consider:

• Dietary changes: Adjusting fiber intake can sometimes help manage symptoms of FI.
• Medications: Certain drugs can help control bowel movements and reduce symptoms.
• Pelvic floor exercises: Physical therapy to strengthen pelvic floor muscles can improve bowel control.
• Surgical interventions: Procedures such as sphincter repair or colostomy may be considered in severe cases.

Each of these alternatives has its own set of benefits and risks, and their effectiveness may vary from person to person.

Experimental or Emerging Technologies

Research is always ongoing to find new and effective treatments for Fecal Incontinence. One such emerging technology is Regenerative Medicine Therapy, which focuses on repairing or replacing damaged tissues using stem cells. Another technique under investigation is the use of injectable bulking agents, substances injected into the anal canal to help increase resistance and improve continence. These are still in experimental stages, and more research is needed to confirm their effectiveness and safety.

Conclusion

Understanding your treatment options for Fecal Incontinence is key to managing your condition. Sacral Nerve Stimulation is an effective treatment that has helped many patients regain control of their bowel movements. However, like any procedure, it has potential adverse events and alternatives. Emerging technologies may also offer new hope for treatment in the future. Always discuss your individual circumstances with your healthcare provider to find the most suitable treatment option for you.

Brief Legal Disclaimer: This article is for informational purposes only and not intended as medical advice. Always consult a healthcare professional for diagnosis and treatment. Reliance on the information provided here is at your own risk.