title: Rhythmic artifact of physiotherapy in intensive care unit EEG recordings.
abstract: Intensive care unit EEG recordings are often contaminated by artifacts that are unseen elsewhere and are usually not documented. One is the rhythmic artifact of physiotherapy (RAP), which can follow the frequency of chest percussion or vibration with either fundamental or harmonic sinusoidal wave forms, affecting single or multiple channels. The occipital electrodes are the most commonly affected, but others can be involved separately or in combination. RAP can easily be mistaken for cerebrally originating rhythms, including seizures. RAP is most easily detected by examining the ECG channel, which usually captures the artifact, but video EEG provides another means, at least for chest percussion.
authors.affiliation: Department of Clinical Neurological Sciences, The University of Western Ontario, London, Ontario, Canada. bryan.young@lhsc.on.ca
authors.forename: Bryan
authors.initials: B
authors.lastname: Young
authors.forename: Syed
authors.initials: S
authors.lastname: Raihan
authors.forename: H
authors.initials: H
authors.lastname: Ladak
authors.forename: Martin
authors.initials: M
authors.lastname: Kelly
mesh_terms: D000328:Adult; D016477:Artifacts; D004569:Electroencephalography / Q000379:methods*; D006801:Humans; D007362:Intensive Care Units; D026741:Physical Therapy Modalities / Q000009:adverse effects*; D013057:Spectrum Analysis