About Responsive Neurostimulation
RNS constantly monitors your brain activity; when it identifies abnormal brain waves that are associated with a seizure, it sends brief electrical signals to reset the brain’s normal activity. The device is made up of two parts: a generator and electrodes. The RNS generator is placed in a small window in the skull and connects to electrodes placed on or in the brain.
RNS is more effective over time, reducing seizures by about 60% to 80% after one to three years.1 RNS is FDA-approved for people ages 18 years and older. However, in certain circumstances, RNS can be used in younger children with epilepsy.
RNS Programming and Activation
The RNS device begins monitoring brain activity as soon as the surgery is completed. For the first few weeks to months after the surgery, you will hold a magnet over the device when you have a seizure. This teaches your RNS to recognize seizures. Your neurologist will program your device to deliver electrical stimulation when it detects the beginning of a seizure.
Doctors usually recommend continuing epilepsy medications after placement of an RNS, though this surgery may enable you to reduce your medications.
Battery Change Procedures
RNS batteries need to be changed about every 8 to 10 years. This requires an outpatient surgical procedure.