November 29, 2020

Brain-implanted device helps ease seizures

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From Baptist Health,

A small device manufactured in Silicon Valley, referred to as the System, can monitor and respond to brain activity, somewhat like a pacemaker responds to heart rhythms.

On September 28, the first “responsive neurostimulation” device (or RNS) was implanted at in for the management of refractory epilepsy.

The patient, Fernando Esguerra, 29, from Bogota, Colombia, was very young when he had a tumor removed from his brain. Since that procedure, Fernando has suffered from seizures daily. In Fernando’s case, RNS is the best course to treat his seizures. That’s because he is considered a refractory patient who has failed to respond to two or more medications.

The RNS, manufactured by NeuroPace, monitors the electrical activity of the brain and detects abnormal activity that could lead to a seizure. If abnormal activity is detected, the device delivers electrical stimulation to the epileptogenic area of the brain through leads. This can stop or help prevent an evolving seizure before it occurs.

Data is Transmitted Wirelessly

The RNS device is curved, mimicking the shape of the skull and is implanted in a way that hides its presence under the skin — so it’s virtually unnoticeable. It also requires minimal maintenance: a battery change after four years. All the data gathered by the device is transmitted wirelessly and uploaded for the medical team to monitor. In Fernando’s case, the medical team is monitoring remotely from another country.

“(Fernando) can be anywhere in the world, as long as he downloads the data, we can look at his brain activity and seizures,” says Alberto Pinzon, M.D., epilepsy program director at Baptist Hospital.

Medical Team Can Customize Device

The procedure typically lasts about two hours and the patient can even be discharged the next day. From the moment, the RNS is activated, it begins recording impulses in the brain and builds a database that allows the medical team to better program the device and customize it to fit Fernando’s needs. Fernando could begin seeing results immediately after the first stimulation settings are programmed into the device. However, the full potential of the implant is usually seen a few months to a year after the procedure.

Seizures happen to 1 in 10 people. Epilepsy to in 1 to 26.” There are several types of antiepileptic medications that can be prescribed for patients with epilepsy; when a first medication is prescribed, it can help about 50 percent of patients; 70-80 percent can be helped by a combination of medications. Around 20-30 percent cannot be controlled by medications and surgery is one of their few options left for management,” said Dr. Pinzon.

Baptist Health Neuroscience Center is a Level 4 Epilepsy Center that offers the most advanced and effective care possible, and in some instances with minimally invasive procedures. Baptist Health Neuroscience Center was recently recognized as #1 in the South Florida region, and one of America’s top 10 percent best hospitals for neurology & neurosurgery by U.S. News & World Report.

About Baptist Health South Florida

With more than 1.4 million patients visits every year, we receive rave reviews from the people we serve. In fact, patients and their families from around the world travel to Miami for our medical expertise. We are proud of our team: approximately 16,000 employees and more than 2,400 physicians in virtually all specialties — many with national and international reputations. All of this and more makes us South Florida’s world-class healthcare organization. Our People Make the Difference Our success comes from a culture of quality and dedication that is instilled into every member of the Baptist Health family. It is because of their generosity, compassion and commitment to clinical and service excellence that we have a reputation for quality.

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IMAGE: Device -Baptist Health SF

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