Aetiology and prognosis of encephalopathic patterns on electroencephalogram in a general hospital.
AffiliationDepartment of Neurology, Cork University Hospital, Cork, Ireland., firstname.lastname@example.org
Aged, 80 and over
*Hospitals, General/statistics & numerical data
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CitationJ Clin Neurosci. 2008 Jun;15(6):637-42. Epub 2008 Apr 1.
JournalJournal of clinical neuroscience : official journal of the Neurosurgical Society , of Australasia
AbstractThe purpose of this study was to investigate the frequency and clinical outcome of patients with encephalopathic electroencephalograms (EEGs) in a neurophysiology department based in a general hospital. We performed a retrospective review of all EEGs obtained during an 18-month period in a large tertiary referral hospital. The referral reasons for EEG, the diagnoses reached, and patient outcomes were reviewed according to EEG severity. One hundred and twenty-three patients with encephalopathic EEGs were reviewed. The most common referral reason found was for an assessment of a possible first-onset seizure. The most common diagnosis found was one of dementia or learning disability. Of patients who were followed-up for a median of 19 months, 20.7% had died. The mortality rate generally increased according to the severity of the encephalopathy on EEG. However, 21.4% of those patients with excessive theta activity only on EEG had died. This study highlights an increased mortality even in the apparently 'milder' degrees of EEG abnormalities.
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