The yield and clinical utility of outpatient short-term video-electroencephalographic monitoring: A five-year retrospective study

► 175 OVEM records of adults were analyzed retrospectively. ► The highest yield was found in psychogenic nonepileptic seizures (PNES) (37.1%). ► Other findings were interictal epileptiform discharges (17.2%) and epileptic seizures (6.9%). ► OVEM changed the pre-test diagnosis in 30.9% of patients. ► OVEM appears to be a useful diagnostic test for PNES.