Patient-detectable responsive neurostimulation as a seizure warning system.

Area of Science:

• Neurology
• Neuroscience
• Biomedical Engineering

Background:

• Epilepsy diagnosis and management are challenged by lack of seizure awareness and unreliable auras.
• Responsive neurostimulation system (RNS) offers treatment by delivering stimulation triggered by intracranial epileptiform activity.
• RNS stimulation parameters can be programmed to potentially induce subjective symptoms for seizure recognition.

Observation:

• This study investigated the feasibility of using RNS to elicit tolerable symptoms for seizure recognition in epilepsy patients.
• 18 patients were assessed for their ability to experience and tolerate stimulation-induced symptoms.
• The potential for RNS to serve as a seizure warning system was evaluated.

Findings:

• 12 out of 18 patients (67%) experienced tolerable symptoms elicited by RNS stimulation, with phosphenes being the most common.
• One patient successfully utilized programmed RNS therapy to recognize and prevent disabling clusters of focal impaired awareness seizures for several years.
• The study demonstrated that RNS can be programmed to induce a seizure warning in a significant proportion of patients.

Implications:

• Responsive neurostimulation system (RNS) may provide a valuable seizure warning, enhancing patient safety and quality of life.
• This approach could lead to improved seizure management, including prevention of clinical seizures or clusters in select individuals.
• Further research into RNS programming for seizure recognition could optimize epilepsy care and patient outcomes.