Vagus nerve stimulation uses a small pulse generator implanted under the skin of the chest, connected by a lead to the left vagus nerve in the neck. It sends regular mild electrical pulses to the brain through the nerve, which makes seizures less frequent and less severe over time. It is also approved for difficult depression in some countries.
It is a palliative treatment, not a cure. About half of patients have their seizures reduced by half or more after 1 to 2 years, and under 1 in 10 become seizure free. Medication almost always continues. Its advantage is that it avoids brain surgery and drug-type side effects.
What Vagus Nerve Stimulation (VNS) Therapy involves
Candidates are first assessed in an epilepsy centre with video-EEG monitoring and MRI to check whether curative surgery is possible, because that would be preferred. For implantation, under general anaesthetic the surgeon makes a horizontal cut about 3 cm long in a skin crease on the left side of the neck and finds the vagus nerve between the carotid artery and jugular vein. Three small spiral coils of the lead are wrapped gently around the nerve. A second cut below the collarbone or in the armpit fold creates a pocket for the generator. The lead is tunnelled under the skin and connected, and the system is tested before closure.
Who is a good candidate for Vagus Nerve Stimulation (VNS) Therapy?
For people whose seizures continue despite adequate trials of at least two appropriate medicines.
- Drug-resistant focal or generalised epilepsy where resective surgery is unsuitable or has not worked
- Children from about 4 years and adults; including Lennox-Gastaut syndrome
- People who cannot tolerate higher drug doses
- Those who experience a warning before seizures and could use the magnet
It is usually not the right choice if:
- Anyone who has not been evaluated for potentially curative epilepsy surgery
- Previous left or bilateral vagotomy
- Significant heart conduction problems, without cardiology advice
- Severe obstructive sleep apnoea that is untreated, since stimulation can worsen it
- People who cannot return for programming visits
Technique options
- Standard open-loop stimulation: Pulses for about 30 seconds every 5 minutes, day and night.
- Responsive models with heart-rate detection: Newer generators deliver an extra burst when they sense the rapid heart-rate rise that often accompanies a seizure.
- Magnet mode: Swiping a magnet over the generator triggers on-demand stimulation at seizure onset, or holding it there pauses stimulation.
- Generator replacement: A short procedure when the battery runs down, typically after 5 to 10 years.
What happens during your treatment
Implantation takes 60 to 90 minutes under general anaesthetic. Most people go home the same day or after one night. The device is switched on at a low setting 2 weeks later, or sometimes before discharge.
Preparing for your trip
Plan for 7 to 10 days in Istanbul. Your surgeon reviews photographs and your medical history before you book, and you meet in person the day before surgery for examination, marking and consent with a professional interpreter.
- Stop smoking and nicotine at least four weeks before and after surgery; it is the single biggest avoidable cause of wound problems
- Tell the team about every medicine and supplement you take; blood thinners, some herbal products and hormone treatment may need to be paused on your doctor's advice
- Arrange for someone to travel with you or to be reachable, and keep the first days at home free of work and lifting
- Book a changeable return flight; your surgeon confirms when you are fit to fly
Recovery and results
Wounds heal in 1 to 2 weeks and normal activity resumes quickly. The output current is then increased in small steps every 2 to 4 weeks over several months, so you need access to a neurologist who can program the device; check this exists at home before travelling. Benefit builds slowly over 6 to 24 months. Certain MRI scans are possible under specific conditions, and diathermy treatments must be avoided.
- Back to everyday activity: 1 to 2 weeks
- When results show: Gradual over 6 to 24 months
- How long they last: Battery 5 to 10 years, then replaced
Safety, risks and revision policy
Surgical risks are low. Most side effects occur only while the device is pulsing and lessen with time or reprogramming.
- Hoarseness or voice change during stimulation, which is very common
- Cough, throat tingling or shortness of breath on exertion
- Wound or device infection in about 2 to 3 percent, sometimes needing removal
- Vocal cord weakness from nerve handling, usually temporary
- Worsening of sleep apnoea
- Lead fracture or device malfunction over the years
- Brief slowing of the heart during testing in theatre, which is rare
Every written proposal arranged through Clinic-Y states what the clinic covers if a correction is needed. Ask for it before you book, not after.
Cost of Vagus Nerve Stimulation (VNS) Therapy in Türkiye
Clinic-Y does not publish a single price for Vagus Nerve Stimulation (VNS) Therapy, because the honest figure depends on your case. What moves it:
- The generator model, which is the main expense
- Surgeon and hospital fees
- Pre-implant epilepsy evaluation such as video-EEG and MRI
- Programming visits
- Future battery replacement
Send your photographs or reports and you receive written, all-inclusive proposals from suitable teams, side by side. Reviewing your case is free.
Frequently Asked Questions
Can I stop my epilepsy medicines?
Rarely. Some people reduce the number or dose over time, guided by their neurologist.
Does it help depression?
There is evidence of slow, sustained benefit in some people with long-standing treatment-resistant depression, but it is not a first-line option and access varies by country.
Is it sensible to have it implanted abroad?
The implant itself is straightforward, but dose titration takes months. It only makes sense if a clinic at home will programme and monitor the same device.