INTRODUCTION: Availability 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. METHODS: Seventy 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. RESULTS: The 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. CONCLUSIONS: The 4-channel EEG module has limited but practical usefulness for seizure detection when standard cEEG monitoring is not available.
INTRODUCTION: Availability 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. METHODS: Seventy 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. RESULTS: The 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. CONCLUSIONS: The 4-channel EEG module has limited but practical usefulness for seizure detection when standard cEEG monitoring is not available.
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