Yield of Hyperventilation and Other Activation Procedures and Study Parameters in Facilitating Epileptiform Discharges

Sleep deprivation, longer recording, and HV favored EA after accounting for age and epilepsy severity. Because no adults had EA with HV, the findings suggest that HV in adults can be an elective activation procedure during EEG; sleep deprivation and longer duration recordings, in contrast, provide increased yields of EA.