Breathing frequency in sleep related respiratory disturbances
Autor(a) principal: | |
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Data de Publicação: | 1993 |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Arquivos de neuro-psiquiatria (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X1993000200014 |
Resumo: | In normal adults, breathing frequency (f) is highly reproducible within an individual ranging from 8 to 25 min-1; during sleep, f is known to change only minimally. This variable is rarely reported in studies of adults with various sleep related respiratory disturbances (SRRD). We occasionally observed a spectacular increase of f during sleep in patients with SRRD associated with hypopnea and 02 desaturation. We undertook a retrospective study of 650 consecutive all-night polysomnographic recordings, in order to evaluate how often such an increase in breathing frequency occurs and with which factors it is associated. We excluded patients with major respiratory failure. We found 16 patients (11 males; mean ± SD, age: 45 ± 13 yrs; body mass index (BMI): 44±11 kg/m2) with f > 25 min-1 during sleep (tachypneic group, T). We performed a one-for-one matching for sex, age and BMI between the T and a control (C) group (age: 45±12 yrs; BMI 44±10 kg/m2), with similar sleep disturbances but normal f during sleep. We compared the f in each vigilance state by averaging five measurements of f, each of one minute duration in a stable period. We observed that: C patients showed no significant change in f in any vigilance state; T patients showed a higher f already during wakefulness (p<0.05) and f increased significantly in all sleep stages (<0.01). We compared the two groups for many clinical and polysomnographic variables. Significant statistical differences were observed for: f, arterial C02 tension (PaC02), vital capacity (VC), forced expiratory volume at one second (FBV1) and pulse frequency (PF). |
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Breathing frequency in sleep related respiratory disturbancesbreathing frequencypolysomnographic recordingsleep related respiratory disturbancesIn normal adults, breathing frequency (f) is highly reproducible within an individual ranging from 8 to 25 min-1; during sleep, f is known to change only minimally. This variable is rarely reported in studies of adults with various sleep related respiratory disturbances (SRRD). We occasionally observed a spectacular increase of f during sleep in patients with SRRD associated with hypopnea and 02 desaturation. We undertook a retrospective study of 650 consecutive all-night polysomnographic recordings, in order to evaluate how often such an increase in breathing frequency occurs and with which factors it is associated. We excluded patients with major respiratory failure. We found 16 patients (11 males; mean ± SD, age: 45 ± 13 yrs; body mass index (BMI): 44±11 kg/m2) with f > 25 min-1 during sleep (tachypneic group, T). We performed a one-for-one matching for sex, age and BMI between the T and a control (C) group (age: 45±12 yrs; BMI 44±10 kg/m2), with similar sleep disturbances but normal f during sleep. We compared the f in each vigilance state by averaging five measurements of f, each of one minute duration in a stable period. We observed that: C patients showed no significant change in f in any vigilance state; T patients showed a higher f already during wakefulness (p<0.05) and f increased significantly in all sleep stages (<0.01). We compared the two groups for many clinical and polysomnographic variables. Significant statistical differences were observed for: f, arterial C02 tension (PaC02), vital capacity (VC), forced expiratory volume at one second (FBV1) and pulse frequency (PF).Academia Brasileira de Neurologia - ABNEURO1993-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X1993000200014Arquivos de Neuro-Psiquiatria v.51 n.2 1993reponame:Arquivos de neuro-psiquiatria (Online)instname:Academia Brasileira de Neurologiainstacron:ABNEURO10.1590/S0004-282X1993000200014info:eu-repo/semantics/openAccessPradella,Márciaeng2011-01-19T00:00:00Zoai:scielo:S0004-282X1993000200014Revistahttp://www.scielo.br/anphttps://old.scielo.br/oai/scielo-oai.php||revista.arquivos@abneuro.org1678-42270004-282Xopendoar:2011-01-19T00:00Arquivos de neuro-psiquiatria (Online) - Academia Brasileira de Neurologiafalse |
dc.title.none.fl_str_mv |
Breathing frequency in sleep related respiratory disturbances |
title |
Breathing frequency in sleep related respiratory disturbances |
spellingShingle |
Breathing frequency in sleep related respiratory disturbances Pradella,Márcia breathing frequency polysomnographic recording sleep related respiratory disturbances |
title_short |
Breathing frequency in sleep related respiratory disturbances |
title_full |
Breathing frequency in sleep related respiratory disturbances |
title_fullStr |
Breathing frequency in sleep related respiratory disturbances |
title_full_unstemmed |
Breathing frequency in sleep related respiratory disturbances |
title_sort |
Breathing frequency in sleep related respiratory disturbances |
author |
Pradella,Márcia |
author_facet |
Pradella,Márcia |
author_role |
author |
dc.contributor.author.fl_str_mv |
Pradella,Márcia |
dc.subject.por.fl_str_mv |
breathing frequency polysomnographic recording sleep related respiratory disturbances |
topic |
breathing frequency polysomnographic recording sleep related respiratory disturbances |
description |
In normal adults, breathing frequency (f) is highly reproducible within an individual ranging from 8 to 25 min-1; during sleep, f is known to change only minimally. This variable is rarely reported in studies of adults with various sleep related respiratory disturbances (SRRD). We occasionally observed a spectacular increase of f during sleep in patients with SRRD associated with hypopnea and 02 desaturation. We undertook a retrospective study of 650 consecutive all-night polysomnographic recordings, in order to evaluate how often such an increase in breathing frequency occurs and with which factors it is associated. We excluded patients with major respiratory failure. We found 16 patients (11 males; mean ± SD, age: 45 ± 13 yrs; body mass index (BMI): 44±11 kg/m2) with f > 25 min-1 during sleep (tachypneic group, T). We performed a one-for-one matching for sex, age and BMI between the T and a control (C) group (age: 45±12 yrs; BMI 44±10 kg/m2), with similar sleep disturbances but normal f during sleep. We compared the f in each vigilance state by averaging five measurements of f, each of one minute duration in a stable period. We observed that: C patients showed no significant change in f in any vigilance state; T patients showed a higher f already during wakefulness (p<0.05) and f increased significantly in all sleep stages (<0.01). We compared the two groups for many clinical and polysomnographic variables. Significant statistical differences were observed for: f, arterial C02 tension (PaC02), vital capacity (VC), forced expiratory volume at one second (FBV1) and pulse frequency (PF). |
publishDate |
1993 |
dc.date.none.fl_str_mv |
1993-06-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X1993000200014 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0004-282X1993000200014 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0004-282X1993000200014 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Academia Brasileira de Neurologia - ABNEURO |
publisher.none.fl_str_mv |
Academia Brasileira de Neurologia - ABNEURO |
dc.source.none.fl_str_mv |
Arquivos de Neuro-Psiquiatria v.51 n.2 1993 reponame:Arquivos de neuro-psiquiatria (Online) instname:Academia Brasileira de Neurologia instacron:ABNEURO |
instname_str |
Academia Brasileira de Neurologia |
instacron_str |
ABNEURO |
institution |
ABNEURO |
reponame_str |
Arquivos de neuro-psiquiatria (Online) |
collection |
Arquivos de neuro-psiquiatria (Online) |
repository.name.fl_str_mv |
Arquivos de neuro-psiquiatria (Online) - Academia Brasileira de Neurologia |
repository.mail.fl_str_mv |
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1754212748260016128 |