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rTMS reduces focal brain hyperperfusion in two patients with EPC
A Graff-Guerrero1, J Gonzáles-Olvera, M Ruiz-García
1Instituto Nacional de Psiquiatría Ramón de la Fuente, División de Neurociencias, Laboratorio de Neurofisiología, México DF. agraff@imp.edu.mx
Acta Neurologica Scandinavica
|March 16, 2004
Summary
Repetitive transcranial magnetic stimulation (rTMS) may reduce epileptic activity in focal brain regions. This study suggests rTMS could be a potential alternative for drug-resistant epilepsy patients.
Area of Science:
- Neurology
- Neuroscience
- Medical Imaging
Background:
- Epilepsia partialis continua (EPC) is characterized by focal, continuous seizures.
- Identifying and targeting the epileptogenic zone is crucial for effective treatment.
- Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive neuromodulation technique.
Observation:
- Two patients with EPC underwent a single rTMS session targeting a focal hyperperfusion region identified by ictal SPECT.
- SPECT imaging before and after rTMS assessed changes in regional cerebral blood flow.
- Seizure activity and epileptic spike frequency were monitored post-rTMS.
Findings:
- The rTMS session resulted in decreased perfusion in the targeted epileptogenic zone for both patients.
- Patient 1 experienced cessation of seizures within 24 hours post-rTMS.
- Patient 2 showed a reduction in seizure frequency and epileptic spike activity.
Implications:
- A single rTMS session may acutely decrease focal epileptiform activity.
- rTMS could represent a novel therapeutic option for patients with refractory epilepsy.
- Further research with larger patient cohorts is warranted to confirm efficacy and optimize treatment parameters.
