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Kettenmann, B; Feichtinger, M; Tilz, C; Kaltenhäuser, M; Hummel, C; Stefan, H.
Comparison of clonidine to sleep deprivation in the potential to induce spike or sharp-wave activity.
Clin Neurophysiol. 2005; 116(4):905-912 Doi: 10.1016/j.clinph.2004.11.006
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Feichtinger Michael

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Abstract:

OBJECTIVE: This study aimed to investigate previously observed side effects, i.e. increased epileptic activity during clonidine medication. The safety and effectiveness of clonidine as spike inducing agent compared to sleep deprivation were tested. METHODS: Patients suffering from drug-resistant localization related epilepsy took part in 3 magnetoencephalography (MEG) sessions. One session was recorded without any activating measures. The other two sessions were either performed after sleep deprivation or after medication with clonidine. Target parameter was the number of spikes or sharp-waves during a 30 min recording period. RESULTS: About 67% of the patients showed increased spike activity after clonidine, whereas sleep deprivation increased the number of spikes in 33%, and 29% of the patients did not show any activation at all. Clonidine was most effective in temporal lobe epilepsy, when the focus was located in the right hemisphere, and when clonidine serum concentrations were ranging between 0.6 and 1.0 ng/ml. CONCLUSIONS: This study showed for the first time that clonidine can be considered an effective spike or sharp-wave inducing drug that is superior to the potency of sleep deprivation. SIGNIFICANCE: The administration of clonidine increases the probability of recording ictal and interictal epileptic activity during limited acquisition time.

Find related publications in this database (using NLM MeSH Indexing)

Action Potentials - drug effects

Adolescent - drug effects

Adult - drug effects

Clonidine - pharmacology

Epilepsy - drug therapy

Female - drug therapy

Humans - drug therapy

Magnetoencephalography - drug effects

Male - drug effects

Middle Aged - drug effects

Sleep Deprivation - physiopathology

Statistics, Nonparametric - physiopathology

Find related publications in this database (Keywords)

spike induction

alpha-2 adrenergic agonist

clonidine

pharmacology

magnetoencephalography

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