Computer automated versus visually determined electroencephalographic and electromyographic seizure duration. 1994

C M Swartz, and R Abrams, and K Rasmussen, and J Pavel, and C F Zorumski, and J Srinivasaraghavan
Department of Psychiatric Medicine, East Carolina University School of Medicine, Greenville, North Carolina 27858-4354.

Seizure durations were determined during electroconvulsive therapy (ECT) by a computer-automated procedure for interpreting electroencephalographic (EEG) and electromyographic (EMG) signals. These seizure durations were compared with durations determined by two experienced clinicians from simultaneous paper recordings of EEG and EMG and with independently recorded observations of cuffed-limb motor movements. The computer EEG seizure end point was programmed as the point where the moving average EEG voltage first fell below the pre-ECT value and remained there for at least 2 s. The computer EMG seizure end point was programmed as the point where the moving average EMG voltage first fell below 200 mV and remained there for at least 2 s. Close correspondence between seizure durations rated from EEG recordings and computer-automated EEG measurements demonstrated validity and high reliability of the computer procedure. Likewise, validity and reliability were demonstrated for motor seizure durations both computer-derived and interpreted from the paper EMG recording by their close correspondence with cuffed-limb motor seizure durations.

UI MeSH Term Description Entries
D008723 Methohexital An intravenous anesthetic with a short duration of action that may be used for induction of anesthesia. Methohexitone,Brevimytal Natrium,Brevital,Brietal,Brietal-Sodium,Methohexital Sodium,Methohexital, Monosodium Salt,Brietal Sodium,Monosodium Salt Methohexital,Natrium, Brevimytal,Sodium, Methohexital
D003201 Computers Programmable electronic devices designed to accept data, perform prescribed mathematical and logical operations at high speed, and display the results of these operations. Calculators, Programmable,Computer Hardware,Computers, Digital,Hardware, Computer,Calculator, Programmable,Computer,Computer, Digital,Digital Computer,Digital Computers,Programmable Calculator,Programmable Calculators
D004565 Electroconvulsive Therapy Electrically induced CONVULSIONS primarily used in the treatment of severe AFFECTIVE DISORDERS and SCHIZOPHRENIA. Convulsive Therapy, Electric,ECT (Psychotherapy),Electroshock Therapy,Shock Therapy, Electric,Convulsive Therapies, Electric,Electric Convulsive Therapies,Electric Convulsive Therapy,Electric Shock Therapies,Electric Shock Therapy,Electroconvulsive Therapies,Electroshock Therapies,Shock Therapies, Electric,Therapies, Electric Convulsive,Therapies, Electric Shock,Therapies, Electroconvulsive,Therapies, Electroshock,Therapy, Electric Convulsive,Therapy, Electric Shock,Therapy, Electroconvulsive,Therapy, Electroshock
D004566 Electrodes Electric conductors through which electric currents enter or leave a medium, whether it be an electrolytic solution, solid, molten mass, gas, or vacuum. Anode,Anode Materials,Cathode,Cathode Materials,Anode Material,Anodes,Cathode Material,Cathodes,Electrode,Material, Anode,Material, Cathode
D004569 Electroencephalography Recording of electric currents developed in the brain by means of electrodes applied to the scalp, to the surface of the brain, or placed within the substance of the brain. EEG,Electroencephalogram,Electroencephalograms
D004576 Electromyography Recording of the changes in electric potential of muscle by means of surface or needle electrodes. Electromyogram,Surface Electromyography,Electromyograms,Electromyographies,Electromyographies, Surface,Electromyography, Surface,Surface Electromyographies
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000758 Anesthesia A state characterized by loss of feeling or sensation. This depression of nerve function is usually the result of pharmacologic action and is induced to allow performance of surgery or other painful procedures.
D013390 Succinylcholine A quaternary skeletal muscle relaxant usually used in the form of its bromide, chloride, or iodide. It is a depolarizing relaxant, acting in about 30 seconds and with a duration of effect averaging three to five minutes. Succinylcholine is used in surgical, anesthetic, and other procedures in which a brief period of muscle relaxation is called for. Succinyldicholine,Suxamethonium,Anectine,Celocurine,Dicholine Succinate,Ditilin,Listenon,Lysthenon,Myorelaxin,Quelicin,Succicuran,Succinylcholine Chloride,Succinylcholine Dibromide,Succinylcholine Dichloride,Succinylcholine Dichloride, Di-H2O,Succinylcholine Diiodide,Succinylcholine Diperchlorate,Succinylcholine Iodide,Suxamethonium Bromide,Suxamethonium Chloride,Bromide, Suxamethonium,Dibromide, Succinylcholine,Dichloride, Succinylcholine,Diiodide, Succinylcholine,Diperchlorate, Succinylcholine,Succinate, Dicholine,Succinylcholine Dichloride, Di H2O

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