• G Bryan Young, Michael D Sharpe, Martin Savard, Eyad Al Thenayan, Loretta Norton, and Corrine Davies-Schinkel.
• Department of Clinical Neurological Sciences, The University of Western Ontario, Room B10-106, University Hospital, 339 Windermere Rd, London, Ontario, N6A 5A5, Canada. bryan.young@lhsc.on.ca
• Neurocrit Care. 2009 Dec 1;11(3):411-6.

IntroductionAvailability of standard, continuous electroencephalography (cEEG) monitoring in ICU is very limited, although commercially available 4-channel modules are present in many ICUs. We investigated the sensitivity of such modules compared with the more complete monitoring with a standard EEG system.MethodsSeventy patients at high risk of seizures in the medical-surgical intensive care unit and Epilepsy Monitoring Unit were recorded simultaneously for at least 24 h with a 4-channel commercial ICU bedside monitoring system (Datex-Ohmeda) with a subhairline montage and a standard EEG machine (XLTEK) using the international 10-20 system of electrode placement. Recordings were interpreted independently from each other.ResultsThe 4-channel recordings demonstrated a sensitivity of 68 and 98% specificity for seizure detection, and a sensitivity of 39% and a specificity of 92% for detection of spikes and PLEDs.ConclusionsThe 4-channel EEG module has limited but practical usefulness for seizure detection when standard cEEG monitoring is not available.

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