title: The yield of non-elective inpatient video-EEG monitoring in adults.
abstract: BACKGROUND
  Inpatient video-EEG monitoring (VEM) can contribute to the diagnosis and treatment in many of the monitored patients. Most admissions to VEM are elective and are scheduled ahead before the monitoring session.
  
  
  OBJECTIVE
  To retrospectively evaluate the yield of non-elective VEM sessions.
  
  
  METHODS
  We retrospectively reviewed the VEM recordings and medical records of all the patients admitted to our one-bed VEM unit from June 2007 to June 2015. A VEM session was diagnostic when a seizure, an event or previously unreported interictal epileptiform discharges were recorded.
  
  
  RESULTS
  The study group included 304 adults aged 18-92 years (mean 40.4 ± 17.4 years), 181 (59%) women. The diagnostic yield of non-elective and elective VEM session was similar (66 and 69%, respectively). In non-elective VEM, fewer patients had known epilepsy (p = 0.0001), session duration was shorter (p = 0.0001), and seizures and interictal epileptiform discharges were recorded less frequently compared to elective VEM (p = 0.005 and p = 0.0001, respectively).
  
  
  CONCLUSIONS
  Non-elective VEM can provide useful information in patients admitted to the neurology department with recent neurological or behavioral events. A timely and correct diagnosis in these patients can potentially reduce unnecessary use of antiepileptic drugs in patients with psychogenic nonepileptic seizures and the morbidity and mortality associated with undiagnosed seizures.
authors.affiliation: Electroencephalography Laboratory, Neurology Department, Assaf Harofeh Medical Center, Zerifin, 70300, Israel.|Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
authors.forename: Jacques
authors.initials: J
authors.lastname: Theitler
authors.affiliation: Electroencephalography Laboratory, Neurology Department, Assaf Harofeh Medical Center, Zerifin, 70300, Israel.
authors.forename: Daniella
authors.initials: D
authors.lastname: Dassa
authors.affiliation: Electroencephalography Laboratory, Neurology Department, Assaf Harofeh Medical Center, Zerifin, 70300, Israel. revitalgm@hotmail.com.|Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel. revitalgm@hotmail.com.
authors.forename: Revital
authors.initials: R
authors.lastname: Gandelman-Marton
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001921:Brain / Q000503:physiopathology; D003937:Diagnosis, Differential; D004569:Electroencephalography; D004827:Epilepsy / Q000175:diagnosis / Q000503:physiopathology; D005260:Female; D006760:Hospitalization; D006801:Humans; D007297:Inpatients; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012640:Seizures / Q000175:diagnosis / Q000503:physiopathology; D013001:Somatoform Disorders / Q000175:diagnosis / Q000503:physiopathology; D014741:Video Recording; D055815:Young Adult
keywords: Psychogenic nonepileptic seizure; Seizure; Video-EEG