Complaints & connections · borters.ch
Stimulatio cerebri profunda
Nothing is destroyed — the stimulation can be adjusted and switched off again. The long assessment beforehand decides the result, and the card afterwards belongs always in the pocket.
Also known as: DBS · brain pacemaker · electrodes in the brain · neurostimulation
Open in the tool — with search and all the links →This compilation is for information and replaces neither medical diagnosis nor treatment. If you have symptoms, see a doctor.
In deep brain stimulation two hair-fine electrodes are placed at a precisely calculated point deep in the brain and connected under the skin to a pulse generator, usually sitting below the collarbone — much like a heart pacemaker. The decisive difference from the brain operations of earlier decades: nothing is destroyed. The stimulation can be adjusted from outside, changed and switched off again. The method has been tested longest and most broadly in Parkinson’s disease, essential tremor and dystonias. In Tourette syndrome it is not a usual route but a possibility for adults with very severe tics in whom behavioural therapy and medication are exhausted; it is offered in specialised centres, mostly accompanied by registries and studies. Every procedure is preceded by a long assessment that takes more time than the operation itself: is the diagnosis right, has everything else really been tried, are the complaints of the kind that responds to stimulation, and do the expectations fit? After the operation the actual work begins — setting the parameters stretches over months. And everyday life afterwards has rules of its own, one of which is vital: the card one carries at all times.
In vagus nerve stimulation the electrode sits on the nerve in the neck; nothing is placed in the brain. The procedure is smaller, the effect starts more slowly, and the side effects are heard in the voice. It is used for different questions — epilepsy and severe depression.
It names the model, the centre and the emergency number. It matters in three situations: in an emergency, when nobody knows about the device; before any imaging; and at the dentist, because certain instruments for stopping bleeding must not be used.
A magnetic resonance scan is not forbidden in principle with a brain pacemaker, but it is bound to conditions that depend on the model. That is clarified beforehand with the centre, not on the day of the scan.
Which three things should be different in everyday life? Writing this list down before the procedure helps afterwards in judging — and already beforehand in the conversation about what is realistic and what is not.
After every reprogramming note what got better and what got worse, with the date. Because weeks lie between appointments, remembering is otherwise unreliable — and the adjustment lives on exactly these reports.
Non-rechargeable devices are changed after a few years in a small procedure; rechargeable ones last longer but need regular charging. A sudden end of stimulation can bring the complaints back abruptly — in dystonias that is a serious problem.
Redness, swelling, weeping or fever belong reported at once. An infection on the hardware is the commonest complication that makes a second procedure necessary — recognised early, more can often be saved.
A brain pacemaker replaces neither behavioural therapy for tics nor physiotherapy in Parkinson’s. It shifts the starting point from which both work better again.
The pacemaker in the brain damps overactive circuits with current — in Parkinson’s it acts on tremor, stiffness and the swings between drug doses, and it often allows the dose to be lowered. What it does not do: halt the illness — the loss of nerve cells goes on. Signs that already did not respond to drugs usually do not improve either. The device is adjusted over weeks to months, and the battery lasts three to five years depending on type, or is rechargeable.
More than two hundred thousand people worldwide have one. In Parkinson’s it is usually considered four to ten years after the diagnosis, when fluctuations appear, and it lengthens the good time in the day by about four to six hours. Adjustment takes three to six months with several appointments. Non-rechargeable batteries last three to five years, rechargeable ones fifteen and longer. The procedure itself takes four to eight hours depending on the technique.
That is the precondition, not a phrase. With tics it means guideline-based behavioural therapy and several medicines at adequate dose and duration — and in Tourette also waiting out the natural course, because tics often ease by themselves in young adulthood.
Stimulation works considerably better on movement symptoms than on anything else. In Parkinson’s a simple rule of thumb applies: what responds to levodopa usually responds to stimulation too — with the exception of tremor, which improves even when levodopa achieves little.
A marked depression or a beginning dementia can worsen after the procedure. So a neuropsychological assessment and a psychiatric conversation belong to the workup — not as a hurdle but as protection.
Merely placing the electrode often improves the complaints for days to weeks before the device is switched on at all. When this effect fades it feels like a setback — but it is a known, passing phenomenon and not a bad sign.
Contact, strength, width and frequency of the pulses are adjusted across many appointments, often together with a change of medication. Anyone starting with this expectation experiences the time afterwards quite differently.
Slurred speech, tingling, balance trouble, muscle pulling or mood swings often depend on the settings and can be resolved by reprogramming. That is the practical advantage of a method that destroys nothing.
Belongs to the preparation. Too few platelets or an anaemia are put right before a procedure on the brain, because bleeding is the most serious risk.
Blood thinners have to be paused to a plan before the procedure — when and how is decided by the centre. Stopping on one’s own is as delicate as carrying on.
Beforehand to exclude a silent infection, and afterwards if the wound reddens, hurts or fever appears. An infection on the hardware is the commonest complication that makes a second procedure necessary.
A high long-term sugar worsens wound healing and raises the risk of infection on the hardware. It belongs brought into a good range before a planned procedure.
A drop in circulation with pallor, sweating and nausea occurs almost only on an empty stomach and while sitting. A small bite beforehand and being treated lying down takes the ground from it.
Having drunk enough lessens dizziness and headache afterwards. That water flushes something out afterwards is a description and not a demonstrated effect — it is sensible anyway.
When a treatment works on muscles, tendons or fascia, the recovery needs building material. That holds for every method that concerns the moving apparatus.
Anyone who quickly gets dizzy at every treatment often has an empty iron store. That is no reason against the method, but a pointer worth taking along.
In Parkinson’s levodopa mostly remains necessary after the procedure, if less — and then the rule most often overlooked continues to hold: levodopa and protein share the same transport route out of the gut. Taken half an hour before the meal it works more reliably than in the middle of eating.
Under longer levodopa treatment B12 and folate fall and homocysteine rises — that is well described and makes nerve complaints in hands and feet which are easily ascribed to the underlying condition. A measurement at intervals is here one of the most worthwhile there is.
Before brain surgery every tendency to bleed counts. What belongs said beforehand and is usually stopped: high-dose omega-3, ginkgo, garlic preparations, vitamin E in large amounts and St John’s wort — the last because it makes the anaesthetic agents break down faster.
Clearly effective with proven deficiency, useless without. Take only with a documented deficiency — excess is harmful.
With Parkinson’s the procedure replaces no dopamine — it smooths the swings that come from the rise and fall of medicine levels. This is why it helps where the effect drops out by the hour, and not equally with everything.
The electrodes sit deep, but not near the pituitary — an influence on the hormone axes is not described. What changes is the movement, not the hormone balance.
In Parkinson’s many gain weight after the operation — on average 3–5 kg in the first year, because the tremor uses less energy and appetite returns. This is known and can be planned for.
After the procedure settings are adjusted and practice starts again. Physiotherapy and speech therapy draw out part of what the pacemaker makes possible — the settings alone do not.