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Nocturnal hypoxemia in children and adolescents with cystic fibrosis / Hipoxemia noturna em criancas e adolescentes com fibrose cistica
Ramos, Regina Terse Trindade; Santana, Maria Angelica Pinheiro; Almeida, Priscila de Carvalho; Machado Junior, Almerio de Souza; Araujo-Filho, Jose Bouzas; Salles, Cristina.
  • Ramos, Regina Terse Trindade; Federal University of Bahia School of Medicine. Department of Pediatrics. Salvador. BR
  • Santana, Maria Angelica Pinheiro; Federal University of Bahia School of Medicine. Department of Pediatrics. Salvador. BR
  • Almeida, Priscila de Carvalho; Federal University of Bahia School of Medicine. Department of Pediatrics. Salvador. BR
  • Machado Junior, Almerio de Souza; Federal University of Bahia School of Medicine. Department of Pediatrics. Salvador. BR
  • Araujo-Filho, Jose Bouzas; Federal University of Bahia School of Medicine. Department of Pediatrics. Salvador. BR
  • Salles, Cristina; Federal University of Bahia School of Medicine. Department of Pediatrics. Salvador. BR
J. bras. pneumol ; 39(6): 667-674, Nov-Dec/2013. tab, graf
Article in English | LILACS | ID: lil-697775
ABSTRACT

OBJECTIVE:

To determine the prevalence of nocturnal hypoxemia and its association with pulmonary function, nutritional status, sleep macrostructure, and obstructive respiratory events during sleep in a population of clinically stable children and adolescents with cystic fibrosis (CF).

METHODS:

This was a cross-sectional study involving 67 children and adolescents with CF between 2 and 14 years of age. All of the participants underwent polysomnography, and SpO2 was measured by pulse oximetry. We also evaluated the Shwachman-Kulczycki (S-K) scores, spirometry findings, and nutritional status of the patients.

RESULTS:

The study involved 67 patients. The mean age of the patients was 8 years. The S-K scores differed significantly between the patients with and without nocturnal hypoxemia, which was defined as an SpO2 < 90% for more than 5% of the total sleep time (73.75 ± 6.29 vs. 86.38 ± 8.70; p < 0.01). Nocturnal hypoxemia correlated with the severity of lung disease, FEV1 (rs = −0.42; p = 0.01), FVC (rs = −0.46; p = 0.01), microarousal index (rs = 0.32; p = 0.01), and apnea-hypopnea index (rs = 0.56; p = 0.01).

CONCLUSIONS:

In this sample of patients with CF and mild-to-moderate lung disease, nocturnal oxygenation correlated with the S-K score, spirometry variables, sleep macrostructure variables, and the apnea-hypopnea index. .
RESUMO

OBJETIVO:

Determinar a prevalência de hipoxemia noturna e sua associação com função pulmonar, estado nutricional, macroestrutura do sono e eventos respiratórios obstrutivos durante o sono em uma população de crianças e adolescentes com fibrose cística (FC) clinicamente estáveis.

MÉTODOS:

Estudo de corte transversal envolvendo 67 crianças e adolescentes com FC e idade entre 2 e 14 anos. Todos os participantes foram submetidos a polissonografia com medição da SpO2 por oximetria de pulso. O escore de Shwachman-Kulczycki (S-K), a espirometria e o estado nutricional dos pacientes também foram avaliados.

RESULTADOS:

Foram incluídos 67 pacientes. A média de idade foi de 8 anos. Os resultados do escore de S-K diferiram significativamente entre os pacientes com e sem hipoxemia noturna, definida como SpO2 < 90% por mais que 5% do tempo total de sono (73,75 ± 6,29 vs. 86,38 ± 8,70; p < 0,01). A presença de hipoxemia noturna correlacionou-se com a gravidade da doença pulmonar, VEF1 (rs = −0,42; p = 0,01), CVF (rs = −0,46; p = 0,01), índice de microdespertares do sono (rs = 0,32; p = 0,01) e índice de apneia e hipopneia (rs = 0,56; p = 0,01).

CONCLUSÕES:

Nesta amostra de pacientes com FC e doença pulmonar leve a moderada, o nível de oxigenação noturna correlacionou-se com escore de S-K, variáveis espirométricas e da macroestrutura do sono, assim como o índice de apneia e hipopneia. .
Subject(s)


Full text: Available Index: LILACS (Americas) Main subject: Sleep Apnea, Obstructive / Cystic Fibrosis / Airway Obstruction / Hypoxia Type of study: Observational study / Prevalence study / Risk factors Limits: Adolescent / Child / Child, preschool / Female / Humans / Male Language: English Journal: J. bras. pneumol Journal subject: Pulmonary Disease (Specialty) Year: 2013 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Bahia School of Medicine/BR

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Full text: Available Index: LILACS (Americas) Main subject: Sleep Apnea, Obstructive / Cystic Fibrosis / Airway Obstruction / Hypoxia Type of study: Observational study / Prevalence study / Risk factors Limits: Adolescent / Child / Child, preschool / Female / Humans / Male Language: English Journal: J. bras. pneumol Journal subject: Pulmonary Disease (Specialty) Year: 2013 Type: Article Affiliation country: Brazil Institution/Affiliation country: Federal University of Bahia School of Medicine/BR