Comparative evaluation of sleep deprivation and sedated sleep EEGs as diagnostic aids in epilepsy

The comparative value of sedated sleep and sleep deprivation EEGs was investigated in a consecutive series of 43 patients who had received both types of activation study for diagnostic purposes. Patients were referred because of persisting doubt concerning either the diagnosis of epilepsy, or the ty...

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Veröffentlicht in:Electroencephalography and clinical neurophysiology 1982-10, Vol.54 (4), p.357-364
Hauptverfasser: Rowan, A.James, Veldhuisen, Ruud J, Nagelkerke, Nico J.D
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container_title Electroencephalography and clinical neurophysiology
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creator Rowan, A.James
Veldhuisen, Ruud J
Nagelkerke, Nico J.D
description The comparative value of sedated sleep and sleep deprivation EEGs was investigated in a consecutive series of 43 patients who had received both types of activation study for diagnostic purposes. Patients were referred because of persisting doubt concerning either the diagnosis of epilepsy, or the type of epilepsy present in those with definite seizures. Forty-one had had routine waking EEGs, all of which were normal or only mildly abnormal. EEGs were rated without access to previous reports or clinical data, and epileptiform discharges (ED) were semiquantified during wakefulness and sleep. De novo precipitation of ED, increase in abundance of ED and discovery of a new independent focus or a new type of ED were taken as the yield of useful information. 44% of sleep deprivation records provided useful information compared to 14% of sedated sleep recordings ( P < 0.005). In addition, sleep deprivation was significantly superior to sedated sleep in differentiating those with a final clinical diagnosis of epilepsy from those with doubtful or no epilepsy ( P < 0.001). It is suggested that the usefulness of the interictal EEG in patients with uncertain epilepsy or epilepsy of unknown type is increased by performance of a diagnostic series to include routine waking, sedated sleep and sleep deprivation recordings. On a comparé les valeurs de l'EEG de privation de sommeil et de sommeil sous sédatif dans une série de 43 patients ayant subi les deux traitements en vue d'établir un diagnostic. Ces patients étaient en examen soit qu'un doute persistât quant au diagnostic d'épilepsie elle-même, soit quant au type d'épilepsie, en cas de comitialité incontestable. 41 d'entre eux avaient subis des EEG d'éveil de routine, lesquels s'étaient tous révélés normaux ou seulement légèrement anormaux. Les EEG ont étéévalués sans avoir eu accès aux rapports déjàétablis et les décharges épileptiformes (DE) furent ‘semi-quantifiées’ pendant l'éveil et le sommeil. Des apparitions de novo de telles décharges épileptiformes, leur augmentation, et la découverte d'un foyer nouveau indépendant, ou d'un nouveau type de décharges furent considérés comme apportant des informations utiles. 44% des enregistrements en privation de sommeil ont fourni d'intéressantes informations contre 14% seulement sous sommeil sous sédatif ( P < 0,005). De plus, la privation de sommeil permettait de façon significativement meilleure que le sommeil sous sédatif de différencier les patients avec un diagnostic clin
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Patients were referred because of persisting doubt concerning either the diagnosis of epilepsy, or the type of epilepsy present in those with definite seizures. Forty-one had had routine waking EEGs, all of which were normal or only mildly abnormal. EEGs were rated without access to previous reports or clinical data, and epileptiform discharges (ED) were semiquantified during wakefulness and sleep. De novo precipitation of ED, increase in abundance of ED and discovery of a new independent focus or a new type of ED were taken as the yield of useful information. 44% of sleep deprivation records provided useful information compared to 14% of sedated sleep recordings ( P &lt; 0.005). In addition, sleep deprivation was significantly superior to sedated sleep in differentiating those with a final clinical diagnosis of epilepsy from those with doubtful or no epilepsy ( P &lt; 0.001). It is suggested that the usefulness of the interictal EEG in patients with uncertain epilepsy or epilepsy of unknown type is increased by performance of a diagnostic series to include routine waking, sedated sleep and sleep deprivation recordings. On a comparé les valeurs de l'EEG de privation de sommeil et de sommeil sous sédatif dans une série de 43 patients ayant subi les deux traitements en vue d'établir un diagnostic. Ces patients étaient en examen soit qu'un doute persistât quant au diagnostic d'épilepsie elle-même, soit quant au type d'épilepsie, en cas de comitialité incontestable. 41 d'entre eux avaient subis des EEG d'éveil de routine, lesquels s'étaient tous révélés normaux ou seulement légèrement anormaux. Les EEG ont étéévalués sans avoir eu accès aux rapports déjàétablis et les décharges épileptiformes (DE) furent ‘semi-quantifiées’ pendant l'éveil et le sommeil. Des apparitions de novo de telles décharges épileptiformes, leur augmentation, et la découverte d'un foyer nouveau indépendant, ou d'un nouveau type de décharges furent considérés comme apportant des informations utiles. 44% des enregistrements en privation de sommeil ont fourni d'intéressantes informations contre 14% seulement sous sommeil sous sédatif ( P &lt; 0,005). De plus, la privation de sommeil permettait de façon significativement meilleure que le sommeil sous sédatif de différencier les patients avec un diagnostic clinique final d'épilepsie de ceux avec épilepsie incertaine ou sans épilepsie ( P&lt;0,001). 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Patients were referred because of persisting doubt concerning either the diagnosis of epilepsy, or the type of epilepsy present in those with definite seizures. Forty-one had had routine waking EEGs, all of which were normal or only mildly abnormal. EEGs were rated without access to previous reports or clinical data, and epileptiform discharges (ED) were semiquantified during wakefulness and sleep. De novo precipitation of ED, increase in abundance of ED and discovery of a new independent focus or a new type of ED were taken as the yield of useful information. 44% of sleep deprivation records provided useful information compared to 14% of sedated sleep recordings ( P &lt; 0.005). In addition, sleep deprivation was significantly superior to sedated sleep in differentiating those with a final clinical diagnosis of epilepsy from those with doubtful or no epilepsy ( P &lt; 0.001). It is suggested that the usefulness of the interictal EEG in patients with uncertain epilepsy or epilepsy of unknown type is increased by performance of a diagnostic series to include routine waking, sedated sleep and sleep deprivation recordings. On a comparé les valeurs de l'EEG de privation de sommeil et de sommeil sous sédatif dans une série de 43 patients ayant subi les deux traitements en vue d'établir un diagnostic. Ces patients étaient en examen soit qu'un doute persistât quant au diagnostic d'épilepsie elle-même, soit quant au type d'épilepsie, en cas de comitialité incontestable. 41 d'entre eux avaient subis des EEG d'éveil de routine, lesquels s'étaient tous révélés normaux ou seulement légèrement anormaux. Les EEG ont étéévalués sans avoir eu accès aux rapports déjàétablis et les décharges épileptiformes (DE) furent ‘semi-quantifiées’ pendant l'éveil et le sommeil. Des apparitions de novo de telles décharges épileptiformes, leur augmentation, et la découverte d'un foyer nouveau indépendant, ou d'un nouveau type de décharges furent considérés comme apportant des informations utiles. 44% des enregistrements en privation de sommeil ont fourni d'intéressantes informations contre 14% seulement sous sommeil sous sédatif ( P &lt; 0,005). De plus, la privation de sommeil permettait de façon significativement meilleure que le sommeil sous sédatif de différencier les patients avec un diagnostic clinique final d'épilepsie de ceux avec épilepsie incertaine ou sans épilepsie ( P&lt;0,001). 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Patients were referred because of persisting doubt concerning either the diagnosis of epilepsy, or the type of epilepsy present in those with definite seizures. Forty-one had had routine waking EEGs, all of which were normal or only mildly abnormal. EEGs were rated without access to previous reports or clinical data, and epileptiform discharges (ED) were semiquantified during wakefulness and sleep. De novo precipitation of ED, increase in abundance of ED and discovery of a new independent focus or a new type of ED were taken as the yield of useful information. 44% of sleep deprivation records provided useful information compared to 14% of sedated sleep recordings ( P &lt; 0.005). In addition, sleep deprivation was significantly superior to sedated sleep in differentiating those with a final clinical diagnosis of epilepsy from those with doubtful or no epilepsy ( P &lt; 0.001). It is suggested that the usefulness of the interictal EEG in patients with uncertain epilepsy or epilepsy of unknown type is increased by performance of a diagnostic series to include routine waking, sedated sleep and sleep deprivation recordings. On a comparé les valeurs de l'EEG de privation de sommeil et de sommeil sous sédatif dans une série de 43 patients ayant subi les deux traitements en vue d'établir un diagnostic. Ces patients étaient en examen soit qu'un doute persistât quant au diagnostic d'épilepsie elle-même, soit quant au type d'épilepsie, en cas de comitialité incontestable. 41 d'entre eux avaient subis des EEG d'éveil de routine, lesquels s'étaient tous révélés normaux ou seulement légèrement anormaux. Les EEG ont étéévalués sans avoir eu accès aux rapports déjàétablis et les décharges épileptiformes (DE) furent ‘semi-quantifiées’ pendant l'éveil et le sommeil. Des apparitions de novo de telles décharges épileptiformes, leur augmentation, et la découverte d'un foyer nouveau indépendant, ou d'un nouveau type de décharges furent considérés comme apportant des informations utiles. 44% des enregistrements en privation de sommeil ont fourni d'intéressantes informations contre 14% seulement sous sommeil sous sédatif ( P &lt; 0,005). De plus, la privation de sommeil permettait de façon significativement meilleure que le sommeil sous sédatif de différencier les patients avec un diagnostic clinique final d'épilepsie de ceux avec épilepsie incertaine ou sans épilepsie ( P&lt;0,001). En somme, la pratique de l'EEG interictal chez des patients dont l'épilepsie est douteuse ou d'un type inconnu est rendue plus utile encore si la série de diagnostic inclut l'enregistrement non seulement de l'éveil, mais aussi, du sommeil sous sédatif et de la privation de sommeil.</abstract><cop>Ireland</cop><pub>Elsevier Ireland Ltd</pub><pmid>6181958</pmid><doi>10.1016/0013-4694(82)90199-7</doi><tpages>8</tpages></addata></record>
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subjects Adolescent
Adult
Brain - physiopathology
Child
Child, Preschool
Electroencephalography
Epilepsy - diagnosis
Epilepsy - physiopathology
Female
Humans
Hypnotics and Sedatives - pharmacology
Male
Sleep - drug effects
Sleep - physiology
Sleep Deprivation
title Comparative evaluation of sleep deprivation and sedated sleep EEGs as diagnostic aids in epilepsy
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