Hyperventilation revisited: Physiological effects and efficacy on focal seizure activation in the era of video-EEG monitoring
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNIFESP |
Texto Completo: | http://repositorio.unifesp.br/handle/11600/28056 http://dx.doi.org/10.1111/j.0013-9580.2005.11104.x |
Resumo: | Purpose: Hyperventilation is an activation method that provokes physiological slowing of brain rhythms, interictal discharges, and seizures, especially in generalized idiopathic epilepsies. in this study we assessed its effectiveness in inducing focal seizures during video-EEG monitoring.Methods: We analyzed the effects of hyperventilation (HV) during video-EEG monitoring (video-EEG) of patients with medically intractable focal epilepsies. We excluded children younger than 10 years, mentally retarded patients, and individuals with frequent seizures.Results: We analyzed 97 patients; 24 had positive seizure activation (PSA), and 73 had negative seizure activation (NSA). No differences were found between groups regarding sex, age, age at epilepsy onset, duration of epilepsy, frequency of seizures, and etiology. Temporal lobe epilepsies were significantly more activated than frontal lobe epilepsies. Spontaneous and activated seizures did not differ in terms of their clinical characteristics, and the activation did not affect the performance of ictal single-photon emission computed tomography (SPECT).Conclusions: HV is a safe and effective method of seizure activation during monitoring. It does not modify any of the characteristics of the seizures and allows the obtaining of valuable ictal SPECTs. This observation is clinically relevant and suggests the effectiveness and the potential of HV in shortening the presurgical evaluation, especially of temporal lobe epilepsy patients, consequently reducing its costs and increasing the number of candidates for epilepsy surgery. |
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Guaranha, Mirian SBGarzon, Eliana [UNIFESP]Buchpiguel, Carlos A.Tazima, SergioYacubian, Elza Márcia Targas [UNIFESP]Sakamoto, Américo C. [UNIFESP]Universidade Federal de São Paulo (UNIFESP)Universidade de São Paulo (USP)2016-01-24T12:37:32Z2016-01-24T12:37:32Z2005-01-01Epilepsia. Malden: Blackwell Publishing Inc, v. 46, n. 1, p. 69-75, 2005.0013-9580http://repositorio.unifesp.br/handle/11600/28056http://dx.doi.org/10.1111/j.0013-9580.2005.11104.x10.1111/j.0013-9580.2005.11104.xWOS:000226810000009Purpose: Hyperventilation is an activation method that provokes physiological slowing of brain rhythms, interictal discharges, and seizures, especially in generalized idiopathic epilepsies. in this study we assessed its effectiveness in inducing focal seizures during video-EEG monitoring.Methods: We analyzed the effects of hyperventilation (HV) during video-EEG monitoring (video-EEG) of patients with medically intractable focal epilepsies. We excluded children younger than 10 years, mentally retarded patients, and individuals with frequent seizures.Results: We analyzed 97 patients; 24 had positive seizure activation (PSA), and 73 had negative seizure activation (NSA). No differences were found between groups regarding sex, age, age at epilepsy onset, duration of epilepsy, frequency of seizures, and etiology. Temporal lobe epilepsies were significantly more activated than frontal lobe epilepsies. Spontaneous and activated seizures did not differ in terms of their clinical characteristics, and the activation did not affect the performance of ictal single-photon emission computed tomography (SPECT).Conclusions: HV is a safe and effective method of seizure activation during monitoring. It does not modify any of the characteristics of the seizures and allows the obtaining of valuable ictal SPECTs. This observation is clinically relevant and suggests the effectiveness and the potential of HV in shortening the presurgical evaluation, especially of temporal lobe epilepsy patients, consequently reducing its costs and increasing the number of candidates for epilepsy surgery.Universidade Federal de São Paulo, Dept Neurol, Escola Paulista Med, São Paulo, BrazilUniv São Paulo, Sch Med, Nucl Med Lab, São Paulo, BrazilUniv São Paulo, Ribeirao Preto Sch Med, Dept Neurol, São Paulo, BrazilUniversidade Federal de São Paulo, Dept Neurol, Escola Paulista Med, São Paulo, BrazilWeb of Science69-75engBlackwell Publishing IncEpilepsiaEEGvideo-EEGhyperventilationseizure activationmonitoringHyperventilation revisited: Physiological effects and efficacy on focal seizure activation in the era of video-EEG monitoringinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da UNIFESPinstname:Universidade Federal de São Paulo (UNIFESP)instacron:UNIFESP11600/280562022-02-18 10:09:39.329metadata only accessoai:repositorio.unifesp.br:11600/28056Repositório InstitucionalPUBhttp://www.repositorio.unifesp.br/oai/requestopendoar:34652023-05-25T12:07:18.135536Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP)false |
dc.title.en.fl_str_mv |
Hyperventilation revisited: Physiological effects and efficacy on focal seizure activation in the era of video-EEG monitoring |
title |
Hyperventilation revisited: Physiological effects and efficacy on focal seizure activation in the era of video-EEG monitoring |
spellingShingle |
Hyperventilation revisited: Physiological effects and efficacy on focal seizure activation in the era of video-EEG monitoring Guaranha, Mirian SB EEG video-EEG hyperventilation seizure activation monitoring |
title_short |
Hyperventilation revisited: Physiological effects and efficacy on focal seizure activation in the era of video-EEG monitoring |
title_full |
Hyperventilation revisited: Physiological effects and efficacy on focal seizure activation in the era of video-EEG monitoring |
title_fullStr |
Hyperventilation revisited: Physiological effects and efficacy on focal seizure activation in the era of video-EEG monitoring |
title_full_unstemmed |
Hyperventilation revisited: Physiological effects and efficacy on focal seizure activation in the era of video-EEG monitoring |
title_sort |
Hyperventilation revisited: Physiological effects and efficacy on focal seizure activation in the era of video-EEG monitoring |
author |
Guaranha, Mirian SB |
author_facet |
Guaranha, Mirian SB Garzon, Eliana [UNIFESP] Buchpiguel, Carlos A. Tazima, Sergio Yacubian, Elza Márcia Targas [UNIFESP] Sakamoto, Américo C. [UNIFESP] |
author_role |
author |
author2 |
Garzon, Eliana [UNIFESP] Buchpiguel, Carlos A. Tazima, Sergio Yacubian, Elza Márcia Targas [UNIFESP] Sakamoto, Américo C. [UNIFESP] |
author2_role |
author author author author author |
dc.contributor.institution.none.fl_str_mv |
Universidade Federal de São Paulo (UNIFESP) Universidade de São Paulo (USP) |
dc.contributor.author.fl_str_mv |
Guaranha, Mirian SB Garzon, Eliana [UNIFESP] Buchpiguel, Carlos A. Tazima, Sergio Yacubian, Elza Márcia Targas [UNIFESP] Sakamoto, Américo C. [UNIFESP] |
dc.subject.eng.fl_str_mv |
EEG video-EEG hyperventilation seizure activation monitoring |
topic |
EEG video-EEG hyperventilation seizure activation monitoring |
description |
Purpose: Hyperventilation is an activation method that provokes physiological slowing of brain rhythms, interictal discharges, and seizures, especially in generalized idiopathic epilepsies. in this study we assessed its effectiveness in inducing focal seizures during video-EEG monitoring.Methods: We analyzed the effects of hyperventilation (HV) during video-EEG monitoring (video-EEG) of patients with medically intractable focal epilepsies. We excluded children younger than 10 years, mentally retarded patients, and individuals with frequent seizures.Results: We analyzed 97 patients; 24 had positive seizure activation (PSA), and 73 had negative seizure activation (NSA). No differences were found between groups regarding sex, age, age at epilepsy onset, duration of epilepsy, frequency of seizures, and etiology. Temporal lobe epilepsies were significantly more activated than frontal lobe epilepsies. Spontaneous and activated seizures did not differ in terms of their clinical characteristics, and the activation did not affect the performance of ictal single-photon emission computed tomography (SPECT).Conclusions: HV is a safe and effective method of seizure activation during monitoring. It does not modify any of the characteristics of the seizures and allows the obtaining of valuable ictal SPECTs. This observation is clinically relevant and suggests the effectiveness and the potential of HV in shortening the presurgical evaluation, especially of temporal lobe epilepsy patients, consequently reducing its costs and increasing the number of candidates for epilepsy surgery. |
publishDate |
2005 |
dc.date.issued.fl_str_mv |
2005-01-01 |
dc.date.accessioned.fl_str_mv |
2016-01-24T12:37:32Z |
dc.date.available.fl_str_mv |
2016-01-24T12:37:32Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
Epilepsia. Malden: Blackwell Publishing Inc, v. 46, n. 1, p. 69-75, 2005. |
dc.identifier.uri.fl_str_mv |
http://repositorio.unifesp.br/handle/11600/28056 http://dx.doi.org/10.1111/j.0013-9580.2005.11104.x |
dc.identifier.issn.none.fl_str_mv |
0013-9580 |
dc.identifier.doi.none.fl_str_mv |
10.1111/j.0013-9580.2005.11104.x |
dc.identifier.wos.none.fl_str_mv |
WOS:000226810000009 |
identifier_str_mv |
Epilepsia. Malden: Blackwell Publishing Inc, v. 46, n. 1, p. 69-75, 2005. 0013-9580 10.1111/j.0013-9580.2005.11104.x WOS:000226810000009 |
url |
http://repositorio.unifesp.br/handle/11600/28056 http://dx.doi.org/10.1111/j.0013-9580.2005.11104.x |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.ispartof.none.fl_str_mv |
Epilepsia |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
69-75 |
dc.publisher.none.fl_str_mv |
Blackwell Publishing Inc |
publisher.none.fl_str_mv |
Blackwell Publishing Inc |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UNIFESP instname:Universidade Federal de São Paulo (UNIFESP) instacron:UNIFESP |
instname_str |
Universidade Federal de São Paulo (UNIFESP) |
instacron_str |
UNIFESP |
institution |
UNIFESP |
reponame_str |
Repositório Institucional da UNIFESP |
collection |
Repositório Institucional da UNIFESP |
repository.name.fl_str_mv |
Repositório Institucional da UNIFESP - Universidade Federal de São Paulo (UNIFESP) |
repository.mail.fl_str_mv |
|
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1783460251501068288 |