EEG use in a tertiary referral centre

Ir Med J. 2011 Jul-Aug;104(7):202-4.

Abstract

The aim of this study was to retrospectively audit all electroencephalograms (EEGs) done over a 2-month period in 2009 by the Neurophysiology Department at Cork University Hospital. There were 316 EEGs performed in total, of which 176/316 (56%) were done within 24 hours of request. Out of 316 EEGs, 208 (66%) were considered 'appropriate' by SIGN and NICE guidelines; 79/208 (38%) had abnormal EEGs and 28 of these abnormal EEGs had epileptiform features. There were 108/316 (34%) 'inappropriate' requests for EEG; of these 15/108 (14%) were abnormal. Of the 67/316 (21%) patients who had EEGs requested based on a history of syncope/funny turns: none of these patients had epileptiform abnormalities on their EEGs. Our audit demonstrates that EEGs are inappropriately over-requested in our institution in particular for cases with reported 'funny turns' and syncope. The yield from EEGs in this cohort of patients was low as would be expected.

MeSH terms

  • Electroencephalography / statistics & numerical data*
  • Epilepsy / diagnosis
  • Female
  • Hospitals, University
  • Humans
  • Ireland
  • Male
  • Practice Guidelines as Topic
  • Practice Patterns, Physicians' / statistics & numerical data*
  • Retrospective Studies