Responsive neurostimulation
Also written as: RNS
An implantable device that detects abnormal brain activity and delivers targeted electrical stimulation to prevent seizures.
Full Definition
Responsive neurostimulation (RNS) is a closed-loop brain stimulation system designed for patients with medically refractory epilepsy who are not candidates for resective surgery. The system continuously monitors brain activity through implanted electrodes and automatically delivers brief electrical pulses when abnormal patterns are detected. Unlike continuous stimulation devices, RNS only activates when seizure-like activity is identified, potentially reducing side effects and battery consumption. The FDA-approved RNS System has shown efficacy in reducing seizure frequency in focal epilepsy patients.
Usage
Usage note: Often abbreviated as RNS in clinical documentation.
In Context
- "The patient was evaluated for responsive neurostimulation after failing multiple resective surgery evaluations." — Surgical consultation
- "Responsive neurostimulation data showed a 60% reduction in disabling seizures at 12 months." — Follow-up report