French recommendations on electroencephalography

Obadia, Nathalie; Lamblin, Marie‐Dominique; Sauleau, Paul

doi:10.1016/j.neucli.2014.11.002

Cited by 34 publications

(26 citation statements)

References 3 publications

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“…The agreement, disagreement or unresolved status was deemed ''weak'' if the median interval overlapped a grading area (e.g. interval [1][2][3][4] or interval [6][7][8]). Authors had the possibility of not grading an item if they felt that their opinion was not relevant for a specific question.…”

Section: Methodsmentioning

confidence: 99%

French guidelines on stereoelectroencephalography (SEEG)

Isnard

Taussig

Bartolomei

et al. 2018

Neurophysiologie Clinique

251

179

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Section: Methodsmentioning

confidence: 99%

French guidelines on stereoelectroencephalography (SEEG)

Isnard

Taussig

Bartolomei

et al. 2018

Neurophysiologie Clinique

251

179

View full text Add to dashboard Cite

“…12 The sensitivity must be increased to a maximum of 2 μV/mm. The calibration voltage should be either 2 or 5 μV, which differs from routine EEG recording.…”

Section: Eeg Recordingmentioning

confidence: 99%

“…10 The French recommendations are more strict; 70 Hz or higher for the low pass filter and 0.53 Hz for the high pass filter. 12 The 50 or 60-Hz notch filter can be used with care, but there should be segments of EEG that are recorded without this filter for comparison. 10 If the EEG suggests ECI, the integrity of the system should be tested by gently touching or shaking each electrode of the montage to create an artifact potential.…”

Section: Eeg Recordingmentioning

confidence: 99%

“…This verifies that the electrode board is connected to the recording device and that the montage settings match the electrode placement. 10,12 At least 30 minutes of EEG recording is recommended by Korean law as described in most guidelines, 10,12 based on the observation that intermittent cortical activity with amplitudes as low as 2 μV may appear at intervals of up to 20 minutes during continuous recording for up to 8 hours. 17 Auditory and bilateral somatosensory stimuli (touch and pain) should be repeatedly performed, and be clearly marked Seo-Young Lee, et al EEG for the diagnosis of brain death on the recording (i.e., the point where the somatosensory stimulus was applied).…”

Section: Eeg Recordingmentioning

confidence: 99%

“…17 Auditory and bilateral somatosensory stimuli (touch and pain) should be repeatedly performed, and be clearly marked Seo-Young Lee, et al EEG for the diagnosis of brain death on the recording (i.e., the point where the somatosensory stimulus was applied). 10,12 The technician must document all the events that occur during the test on the EEG tracings. The Korean law mandates that EEG should be performed once after the second clinical examination and the apnea test in patients aged one year or above, and twice (before and after the second clinical examination) in infants between ages two months and one year.…”

Section: Eeg Recordingmentioning

confidence: 99%

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Electroencephalography for the diagnosis of brain death

Lee

Kim

et al. 2017

Ann Clin Neurophysiol

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Electroencephalography (EEG) is frequently used to assist the diagnosis of brain death. However, to date there have been no guidelines in terms of EEG criteria for determining brain death in Korea, despite EEG being mandatory. The purpose of this review is to provide an update on the evidence and controversies with regarding to the utilization of EEG for determining brain death and to serve as a cornerstone for the development of future guidelines. To determine brain death, electrocerebral inactivity (ECI) should be demonstrated on EEG at a sensitivity of 2 μV/mm using double-distance electrodes spaced 10 centimeters or more apart from each other for at least 30 minutes, with intense somatosensory or audiovisual stimuli. ECI should be also verified by checking the integrity of the system. Additional monitoring is needed if extracerebral potentials cannot be eliminated. Interpreting EEG at high sensitivities, which is required for the diagnosis of brain death, can pose a diagnostic challenge. Furthermore, EEG is affected by physiologic variables and drugs. However, no consensus exists as to the minimal requirements for blood pressure, oxygen saturation, and body temperature during the EEG recording itself, the minimal time for observation after the brain injury or rewarming from hypothermia, and how to determine brain death when the findings of ECI is equivocal. Therefore, there is a strong need to establish detailed guidelines for performing EEG to determine brain death.

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Time‐dependent risk of seizures in critically ill patients on continuous electroencephalogram

Struck

Osman

Rampal

et al. 2017

Annals of Neurology

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Objective Find the optimal continuous electroencephalographic (CEEG) monitoring duration for seizure detection in critically ill patients. Methods We analyzed prospective data from 665 consecutive CEEGs, including clinical factors and time-to-event emergence of electroencephalographic (EEG) findings over 72 hours. Clinical factors were selected using logistic regression. EEG risk factors were selected a priori. Clinical factors were used for baseline (pre-EEG) risk. EEG findings were used for the creation of a multistate survival model with 3 states (entry, EEG risk, and seizure). EEG risk state is defined by emergence of epileptiform patterns. Results The clinical variables of greatest predictive value were coma (31% had seizures; odds ratio [OR] = 1.8, p<0.01) and history of seizures, either remotely or related to acute illness (34% had seizures; OR = 3.0, p<0.001). If there were no epileptiform findings on EEG, the risk of seizures within 72 hours was between 9% (no clinical risk factors) and 36% (coma and history of seizures). If epileptiform findings developed, the seizure incidence was between 18% (no clinical risk factors) and 64% (coma and history of seizures). In the absence of epileptiform EEG abnormalities, the duration of monitoring needed for seizure risk of <5% was between 0.4 hours (for patients who are not comatose and had no prior seizure) and 16.4 hours (comatose and prior seizure). Interpretation The initial risk of seizures on CEEG is dependent on history of prior seizures and presence of coma. The risk of developing seizures on CEEG decays to <5% by 24 hours if no epileptiform EEG abnormalities emerge, independent of initial clinical risk factors.

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French recommendations on electroencephalography

Cited by 34 publications

References 3 publications

French guidelines on stereoelectroencephalography (SEEG)

French guidelines on stereoelectroencephalography (SEEG)

Electroencephalography for the diagnosis of brain death

Time‐dependent risk of seizures in critically ill patients on continuous electroencephalogram

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