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Sleep deprivation does not affect seizure frequency during inpatient video-EEG monitoring

From the Clinical Neurophysiology Section, Department of Neurology, University of Michigan Medical School, Ann Arbor.

Address correspondence and reprint requests to Dr. Beth A. Malow, Michael S. Aldrich Sleep Disorders Laboratory, UH Room 8D-8702; 1500 E. Medical Center Drive, Ann Arbor, MI, 48109-0117; e-mail: bmalow{at}umich.edu

Objective: To determine whether acute sleep deprivation facilitates seizures during inpatient monitoring in a controlled protocol.

Methods: Eighty-four patients with medically refractory partial epilepsy undergoing inpatient monitoring were assigned in consecutive blocks to either sleep deprivation every other night or to normal sleep. In both groups, subjects were requested to stay awake during the day, from 6 AM to 10 PM. In the sleep deprivation group, patients also stayed awake between 10 PM and 6 AM every other night beginning with Day 2. Patients were removed from sleep deprivation if they had two or more secondarily generalized seizures within 24 hours. Patients were removed from the normal sleep group and were sleep deprived if they did not have a complex partial or secondarily generalized seizure by Day 6 of monitoring. In these patients removed from sleep deprivation or from normal sleep, data were analyzed up to and including the day of removal from the protocol.

Results: The sleep deprivation and normal sleep subjects did not differ in age, sex, seizure localization, or percent dosage reduction in antiepileptic drugs from baseline at days 1 to 3 of monitoring. Protocol duration was 6.5 ± 2.4 days (mean ± SD) for the sleep deprivation group and 5.8 ± 2.0 days for the normal sleep group. Seizures per day for complex partial, secondarily generalized, and combined complex partial and secondarily generalized, calculated from admission until end of protocol, did not differ significantly between the two groups.

Conclusion: Acute sleep deprivation did not affect seizure frequency during inpatient monitoring in our patients with intractable complex partial seizures with secondary generalization.

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