RESUMO
OBJECTIVE: To investigate the changes in predicted lung function measurements when using race-neutral equations in children, based upon the new Global Lung Initiative (GLI) reference equations, utilizing a race-neutral approach in interpreting spirometry results compared with the 2012 race-specific GLI equations. STUDY DESIGN: We analyzed data from 2 multicenter prospective cohorts comprised of healthy children and children with history of severe (requiring hospitalization) bronchiolitis. Spirometry testing was done at the 6-year physical exam, and 677 tests were analyzed using new GLI Global and 2012 GLI equations. We used multivariable logistic regression, adjusted for age, height, and sex, to examine the association of race with the development of new impairment or increased severity (forced expiratory volume in the first second (FEV1) z-score ≤ -1.645) as per 2022 American Thoracic Society (ATS) guidelines. RESULTS: Compared with the race-specific GLI, the race-neutral equation yielded increases in the median forced expiratory volume in the first second and forced vital capacity (FVC) percent predicted in White children but decreases in these two measures in Black children. The prevalence of obstruction increased in White children by 21%, and the prevalence of possible restriction increased in Black children by 222%. Compared with White race, Black race was associated with increased prevalence of new impairments (aOR 7.59; 95%CI, 3.00-19.67; P < .001) and increased severity (aOR 35.40; 95%CI, 4.70-266.40; P = .001). Results were similar across both cohorts. CONCLUSIONS: As there are no biological justifications for the inclusion of race in spirometry interpretation, use of race-neutral spirometry reference equations led to an increase in both the prevalence and severity of respiratory impairments among Black children.
Assuntos
Testes de Função Respiratória , Espirometria , Criança , Pré-Escolar , Feminino , Humanos , Masculino , Bronquiolite/diagnóstico , Bronquiolite/fisiopatologia , Bronquiolite/etnologia , Estudos de Coortes , Volume Expiratório Forçado , Estudos Prospectivos , Valores de Referência , Testes de Função Respiratória/normas , Capacidade Vital , Negro ou Afro-Americano , BrancosRESUMO
Las enfermedades obstructivas de la vía aérea pediátrica son muy frecuentes debido a los fenómenos mecánicos que están involucrados. En los niños más pequeños, la marcada resistencia de las vías aéreas pequeñas, determinada por la falta de tejido elástico y una caja torácica aún no bien desarrollada; tanto su estructura como la musculatura, facilitarán que cuadros infecciosos, mecánicos (cuerpo extraño) y compresivos, determinen que los flujos de aire se vean limitados y con ello la ventilación alveolar. La respuesta fisiológica con aumento del trabajo respiratorio es limitada y por lo tanto la fatiga muscular determinará hipoventilación con las consecuencias de hipoxemia e hipercapnia.
Obstructive diseases of the pediatric airway are very frequent due to the mechanical phenomena that are involved. The marked resistance of the small airways, such as the lack of elastic tissue and a thoracic cage that is not yet well developed, both in its structure and in the musculature, will make it easier for infectious, mechanical (foreign body), compressive and other conditions to determine that the flows of air are limited and with it the alveolar ventilation. The physiological response with increased work of breathing is limited and therefore muscle fatigue will determine hypoventilation, with the consequences of hypoxemia and hypercapnia.
Assuntos
Humanos , Criança , Pneumopatias Obstrutivas/fisiopatologia , Asma/fisiopatologia , Bronquiolite/fisiopatologia , Mecânica Respiratória , Corpos Estranhos/fisiopatologia , HipoventilaçãoRESUMO
In a prospective, multicenter cohort of infants hospitalized with bronchiolitis, we found infants born late pre-term (ie, gestational age of 34-36.9 weeks) had 35% higher odds of having asthma by age 5 years compared with infants born at full-term.
Assuntos
Asma/etiologia , Bronquiolite/fisiopatologia , Doenças do Prematuro/fisiopatologia , Pré-Escolar , Feminino , Idade Gestacional , Humanos , Lactente , Recém-Nascido , Recém-Nascido Prematuro , Doenças do Prematuro/etiologia , Masculino , Gravidade do Paciente , Estudos Prospectivos , Fatores de RiscoRESUMO
INTRODUCTION: acute bronchiolitis is the leading cause of hospitalization in infants worldwide. However, little is known about the real impact of on society in terms of years of life lost due to this condition. The objective of the present study is to determine the Disability-Adjusted Life Years (DALYs) for acute bronchiolitis in infants in Colombia. METHODS: data from the national epidemiological surveillance system were used to estimate DALYs, calculated from the sum of years of life lost and years lived with disability due to acute bronchiolitis in Colombia. A bootstrapped method with 10,000 iterations was used to estimate each statistical parameter using the package DALYs calculator in R. RESULTS: in 2019, 447,434 years of life (confidence interval 95% 397,647- 512,759) were lost due to acute bronchiolitis in Colombian infants. The estimated rate was 34 DALYs/1000 person-year (95% confidence interval 30-39). CONCLUSION: our paper shows the high burden of disease associated with bronchiolitis in Colombia. Prevention strategies, such as acute bronchiolitis vaccination, to reduce morbidity associated with acute bronchiolitis should be encouraged in our country.
Assuntos
Bronquiolite/epidemiologia , Pessoas com Deficiência , Anos de Vida Ajustados por Qualidade de Vida , Doença Aguda , Bronquiolite/fisiopatologia , Pré-Escolar , Colômbia/epidemiologia , Monitoramento Epidemiológico , Feminino , Humanos , Lactente , Recém-Nascido , MasculinoRESUMO
La bronquiolitis aguda es una condición respiratoria frecuente en los niños menores de 2 años. Representa la principal causa de hospitalización infantil y se caracteriza por la presencia de sibilancias asociada a signos de una infección respiratoria alta. El agente etiológico más común es el virus respiratorio sincicial. Existe una falta de consenso con respecto a su definición clínica; y por ello, su tratamiento varía en todo el mundo. El diagnóstico es clínico, sin necesidad de emplear laboratorio o imágenes en forma rutinaria. Diversas revisiones han demostrado que los broncodilatadores, adrenalina, corticoides y antibióticos, entre otros, carecen de eficacia por lo que no se sugiere su empleo. El tratamiento sigue siendo de soporte, mediante la administración de oxígeno y manteniendo una adecuada hidratación. Cuando no se logra disminuir el trabajo respiratorio o corregir la hipoxemia se puede utilizar la presión positiva en la vía aérea para prevenir y controlar la insuficiencia respiratoria. Este artículo desarrolla una breve revisión de las principales características clínicas, epidemiológicas, radiológicas, así como algunos de los diferentes tratamientos publicados en las últimas dos décadas.
Acute bronchiolitis is a common respiratory condition in children under 2 years old. It represents the main cause of childhood hospitalization characterized by the presence of wheezing associated with signs of an upper respiratory infection. The most common etiologic agent is respiratory syncytial virus. There is a lack of consensus regarding its clinical definition; and therefore, its treatment varies around the world. Diagnosis is clinical, without the need for routine laboratory or imaging. Various reviews have shown that bronchodilators, epinephrine, corticosteroids, and antibiotics, among others, lack efficacy, so their use is not suggested. Treatment continues to be supportive, by administering oxygen and maintaining adequate hydration. When it is not possible to reduce the work of breathing or correct the hypoxemia, positive airway pressure can be used to prevent and control respiratory failure. This article develops a brief review of the main clinical, epidemiological, and radiological characteristics, as well as some of the different treatments published in the last two decades.
Assuntos
Humanos , Bronquiolite/diagnóstico , Bronquiolite/terapia , Oxigenoterapia , Bronquiolite/etiologia , Bronquiolite/fisiopatologia , Bronquiolite/tratamento farmacológico , Radiografia Torácica , Modalidades de Fisioterapia , Diagnóstico Diferencial , Ventilação não InvasivaRESUMO
INTRODUCCIÓN: La bronquiolitis es la inflamación aguda de las vías aéreas de pequeño calibre, teniendo como causa principal las infecciones virales. Es altamente frecuente en menores de dos años, sobretodo en menores de 12 meses. Existe gran controversia sobre el manejo de esta patología, siendo especialmente cuestionable el uso de beta-2 agonistas de corta acción tanto en el ámbito ambulatorio como hospitalario. MÉTODOS: Para responder esta pregunta utilizamos Epistemonikos, la mayor base de datos de revisiones sistemáticas en salud a nivel mundial, la cual es mantenida mediante búsquedas en múltiples fuentes de información, incluyendo MEDLINE, EMBASE, Cochrane, entre otras. Extrajimos los datos desde las revisiones identificadas, reanalizamos los datos de los estudios primarios, realizamos un metanálisis, y preparamos una tabla de resumen de los resultados utilizando el método GRADE. RESULTADOS Y CONCLUSIONES: Identificamos siete revisiones sistemáticas que en conjunto incluyen 47 estudios primarios, de los cuales 44 corresponden a ensayos aleatorizados. Concluimos que el uso de beta-2 agonistas podría no tener ningún beneficio en el manejo de la bronquiolitis, en términos de necesidad de hospitalización y/o duración de la misma. Por otra parte, podría aumentar efectos adversos como arritmias, sin embargo, la certeza de esta evidencia es baja.
Assuntos
Agonistas de Receptores Adrenérgicos beta 2/administração & dosagem , Bronquiolite/tratamento farmacológico , Agonistas de Receptores Adrenérgicos beta 2/efeitos adversos , Bronquiolite/fisiopatologia , Bases de Dados Factuais , Hospitalização/estatística & dados numéricos , Humanos , Lactente , Ensaios Clínicos Controlados Aleatórios como AssuntoRESUMO
INTRODUCCIÓN La bronquiolitis es la inflamación aguda de las vías aéreas de pequeño calibre, teniendo como causa principal las infecciones virales. Es altamente frecuente en menores de dos años, sobretodo en menores de 12 meses. Existe gran controversia sobre el manejo de esta patología, siendo especialmente cuestionable el uso de beta-2 agonistas de corta acción tanto en el ámbito ambulatorio como hospitalario. MÉTODOS Para responder esta pregunta utilizamos Epistemonikos, la mayor base de datos de revisiones sistemáticas en salud a nivel mundial, la cual es mantenida mediante búsquedas en múltiples fuentes de información, incluyendo MEDLINE, EMBASE, Cochrane, entre otras. Extrajimos los datos desde las revisiones identificadas, reanalizamos los datos de los estudios primarios, realizamos un metanálisis, y preparamos una tabla de resumen de los resultados utilizando el método GRADE. RESULTADOS Y CONCLUSIONES Identificamos siete revisiones sistemáticas que en conjunto incluyen 47 estudios primarios, de los cuales 44 corresponden a ensayos aleatorizados. Concluimos que el uso de beta-2 agonistas podría no tener ningún beneficio en el manejo de la bronquiolitis, en términos de necesidad de hospitalización y/o duración de la misma. Por otra parte, podría aumentar efectos adversos como arritmias, sin embargo, la certeza de esta evidencia es baja
Assuntos
Humanos , Lactente , Bronquiolite/tratamento farmacológico , Agonistas de Receptores Adrenérgicos beta 2/administração & dosagem , Bronquiolite/fisiopatologia , Ensaios Clínicos Controlados Aleatórios como Assunto , Bases de Dados Factuais , Agonistas de Receptores Adrenérgicos beta 2/efeitos adversos , Hospitalização/estatística & dados numéricosRESUMO
INTRODUCTION: Bronchiolitis is an acute small airways inflammation mainly caused by a viral infection. It is frequent in children under two years of age, particularly under 12 months. The use of systemic corticosteroids has been proposed for bronchiolitis, especially for severely ill patients. However, its efficacy is still controversial. METHODS: To answer this question we gathered information using Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others. We extracted data from the systematic reviews, reanalyzed data from primary studies, conducted a meta-analysis and generated a summary of findings table using the GRADE approach. RESULTS AND CONCLUSIONS: We identified four systematic reviews, including 20 randomized trials overall. We concluded the use of systemic corticosteroids has no benefit for the treatment of bronchiolitis, even for patients with mechanical ventilation.
INTRODUCCIÓN: La bronquiolitis es una inflamación aguda de las vías aéreas pequeñas debida principalmente a una infección viral. Es una patología frecuente en menores de dos años y en especial en menores de 12 meses. Se ha propuesto el uso de corticoides sistémicos en bronquiolitis, en especial en pacientes de mayor severidad, siendo controversial su utilidad. MÉTODOS: Para evaluarlo utilizamos Epistemonikos, la mayor base de datos de revisiones sistemáticas en salud, la cual es mantenida mediante búsquedas en múltiples fuentes de información, incluyendo MEDLINE, EMBASE, Cochrane, entre otras. Extrajimos los datos desde las revisiones identificadas, reanalizamos los datos de los estudios primarios, realizamos un metanálisis y preparamos una tabla de resumen de los resultados utilizando el método GRADE. RESULTADOS Y CONCLUSIONES: Identificamos cuatro revisiones sistemáticas que en conjunto incluyeron 20 ensayos aleatorizados. Concluimos que el uso de corticoides sistémicos no aporta ningún beneficio en el tratamiento de la bronquiolitis, aún en pacientes con ventilación mecánica.
Assuntos
Bronquiolite/tratamento farmacológico , Glucocorticoides/uso terapêutico , Bronquiolite/fisiopatologia , Bases de Dados Factuais , Humanos , Lactente , Ensaios Clínicos Controlados Aleatórios como Assunto , Respiração Artificial/métodos , Índice de Gravidade de Doença , Resultado do TratamentoRESUMO
INTRODUCTION: Bronchiolitis consists of an acute small airways inflammation secondary to a viral infection and is a frequent pathology among children under 2 years. The use of inhaled corticosteroids during bronchiolitis has been proposed to reduce recurrent wheeze or asthma, however there is controversy about it. METHODS: To answer this question we used Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others. We extracted data from the systematic reviews, reanalyzed data of primary studies, conducted a meta-analysis and generated a summary of findings table using the GRADE approach. RESULTS AND CONCLUSIONS: We identified three systematic reviews including 11 randomized trials. We concluded that inhaled corticosteroids do not reduce recurrent wheeze or asthma in patients with bronchiolitis.
INTRODUCCIÓN: La bronquiolitis corresponde a una inflamación aguda de las vías aéreas pequeñas secundaria a infección viral y es una patología frecuente en menores de dos años. Se ha propuesto que el uso de corticoides inhalatorios durante una bronquiolitis podría reducir la recurrencia de sibilancias o el desarrollo de asma, sin embargo, existe controversia al respecto. MÉTODOS: Para responder a esta interrogante utilizamos Epistemonikos, la mayor base de datos de revisiones sistemáticas en salud, la cual es mantenida mediante búsquedas en múltiples fuentes de información, incluyendo MEDLINE, EMBASE, Cochrane, entre otras. Extrajimos los datos desde las revisiones identificadas, reanalizamos los datos de los estudios primarios, realizamos un metanálisis y preparamos una tabla de resumen de los resultados utilizando el método GRADE. RESULTADOS Y CONCLUSIONES: Identificamos tres revisiones sistemáticas que en conjunto incluyen 11 ensayos aleatorizados. Concluimos que el uso de corticoides inhalatorios no reduce la recurrencia de sibilancias o asma en pacientes con bronquiolitis.
Assuntos
Bronquiolite/tratamento farmacológico , Glucocorticoides/uso terapêutico , Administração por Inalação , Bronquiolite/fisiopatologia , Bases de Dados Factuais , Glucocorticoides/administração & dosagem , Humanos , Lactente , Ensaios Clínicos Controlados Aleatórios como Assunto , Resultado do TratamentoRESUMO
INTRODUCCIÓN: La bronquiolitis corresponde a una inflamación aguda de las vías aéreas pequeñas secundaria a infección viral y es una patología frecuente en menores de dos años. Se ha propuesto que el uso de corticoides inhalatorios durante una bronquiolitis podría reducir la recurrencia de sibilancias o el desarrollo de asma, sin embargo, existe controversia al respecto. MÉTODOS: Para responder a esta interrogante utilizamos Epistemonikos, la mayor base de datos de revisiones sistemáticas en salud, la cual es mantenida mediante búsquedas en múltiples fuentes de información, incluyendo MEDLINE, EMBASE, Cochrane, entre otras. Extrajimos los datos desde las revisiones identificadas, reanalizamos los datos de los estudios primarios, realizamos un metanálisis y preparamos una tabla de resumen de los resultados utilizando el método GRADE. RESULTADOS Y CONCLUSIONES: Identificamos tres revisiones sistemáticas que en conjunto incluyen 11 ensayos aleatorizados. Concluimos que el uso de corticoides inhalatorios no reduce la recurrencia de sibilancias o asma en pacientes con bronquiolitis.
INTRODUCTION: Bronchiolitis consists of an acute small airways inflammation secondary to a viral infection and is a frequent pathology among children under 2 years. The use of inhaled corticosteroids during bronchiolitis has been proposed to reduce recurrent wheeze or asthma, however there is controversy about it. METHODS: To answer this question we used Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others. We extracted data from the systematic reviews, reanalyzed data of primary studies, conducted a meta-analysis and generated a summary of findings table using the GRADE approach. RESULTS AND CONCLUSIONS: We identified three systematic reviews including 11 randomized trials. We concluded that inhaled corticosteroids do not reduce recurrent wheeze or asthma in patients with bronchiolitis.
Assuntos
Humanos , Lactente , Bronquiolite/tratamento farmacológico , Glucocorticoides/uso terapêutico , Administração por Inalação , Bronquiolite/fisiopatologia , Ensaios Clínicos Controlados Aleatórios como Assunto , Bases de Dados Factuais , Resultado do Tratamento , Glucocorticoides/administração & dosagemRESUMO
INTRODUCCIÓN: La bronquiolitis es una inflamación aguda de las vías aéreas pequeñas debida principalmente a una infección viral. Es una patología frecuente en menores de dos años y en especial en menores de 12 meses. Se ha propuesto el uso de corticoides sistémicos en bronquiolitis, en especial en pacientes de mayor severidad, siendo controversial su utilidad. MÉTODOS: Para evaluarlo utilizamos Epistemonikos, la mayor base de datos de revisiones sistemáticas en salud, la cual es mantenida mediante búsquedas en múltiples fuentes de información, incluyendo MEDLINE, EMBASE, Cochrane, entre otras. Extrajimos los datos desde las revisiones identificadas, reanalizamos los datos de los estudios primarios, realizamos un metanálisis y preparamos una tabla de resumen de los resultados utilizando el método GRADE. RESULTADOS Y CONCLUSIONES: Identificamos cuatro revisiones sistemáticas que en conjunto incluyeron 20 ensayos aleatorizados. Concluimos que el uso de corticoides sistémicos no aporta ningún beneficio en el tratamiento de la bronquiolitis, aún en pacientes con ventilación mecánica.
INTRODUCTION: Bronchiolitis is an acute small airways inflammation mainly caused by a viral infection. It is frequent in children under two years of age, particularly under 12 months. The use of systemic corticosteroids has been proposed for bronchiolitis, especially for severely ill patients. However, its efficacy is still controversial. METHODS: To answer this question we gathered information using Epistemonikos, the largest database of systematic reviews in health, which is maintained by screening multiple information sources, including MEDLINE, EMBASE, Cochrane, among others. We extracted data from the systematic reviews, reanalyzed data from primary studies, conducted a meta-analysis and generated a summary of findings table using the GRADE approach. RESULTS AND CONCLUSIONS: We identified four systematic reviews, including 20 randomized trials overall. We concluded the use of systemic corticosteroids has no benefit for the treatment of bronchiolitis, even for patients with mechanical ventilation.
Assuntos
Humanos , Lactente , Bronquiolite/tratamento farmacológico , Glucocorticoides/uso terapêutico , Respiração Artificial/métodos , Índice de Gravidade de Doença , Bronquiolite/fisiopatologia , Ensaios Clínicos Controlados Aleatórios como Assunto , Bases de Dados Factuais , Resultado do TratamentoRESUMO
Bronchiolitis is a prevalent disease in children under two years of age, which carries significant morbidity and mortality. However, there is controversy regarding the optimal therapeutic management. Leukotriene inhibitors have been proposed as an alternative, although its efficacy is not clear yet. Searching in Epistemonikos database, which is maintained by screening multiple databases, we identified two systematic reviews comprising six trials addressing the question of this article. We extracted data, combined the evidence using meta-analysis and generated a summary of findings following the GRADE approach. We concluded leukotriene inhibitors might not decrease mortality levels on bronchiolitis patients and it is not clear whether they decrease length of hospital stay. They might reduce recurrent wheezing, but the certainty of the evidence is low, and they increase adverse effects.
Assuntos
Bronquiolite/tratamento farmacológico , Hospitalização/estatística & dados numéricos , Antagonistas de Leucotrienos/uso terapêutico , Bronquiolite/mortalidade , Bronquiolite/fisiopatologia , Humanos , Lactente , Tempo de Internação , Antagonistas de Leucotrienos/efeitos adversosRESUMO
Recent studies revealed common genetic risks for both viral bronchiolitis and asthma. Genome-wide association studies revealed that rs7216389 in the ORMDL3 gene is associated with childhood asthma. We conducted a case-control study examining the associations between ORMDL3 polymorphisms (rs7216389, rs12603332, and rs11650680) and bronchiolitis susceptibility/viral findings among 247 infant bronchiolitis cases and 190 healthy controls. We genotyped single nucleotide polymorphisms by matrix-assisted laser desorption/ionization-time-of-flight mass spectrometry and detected respiratory viruses with multiplex reverse transcriptase-polymerase chain reaction. Only the genotype and allele frequencies of rs7216389 significantly differed between bronchiolitis and controls. The frequencies of the TT homozygote and the T allele of rs7216389 were significantly higher in the bronchiolitis patients (P = 0.0325; P = 0.0089, respectively). Polymorphisms were not associated with bronchiolitis severity. Cases were further stratified by viral infection, but no significant differences in the ORMDL3 genotype between the virus-detected group (e.g., respiratory syncytial virus alone, respiratory virus alone, virus detected) and no-virus-detected group were observed. Bronchiolitis is associated with the ORMDL3 gene in Chinese children, and there were no significant associations between genetic variations and disease severity or respiratory viruses. The TT homozygote and the T allele of rs7216389 in ORMDL3 increased bronchiolitis risk. The rs7216389 polymorphism may be a predictor for identifying infants with predisposition to virus-induced wheezing to persistent asthma.
Assuntos
Asma/genética , Bronquiolite/genética , Predisposição Genética para Doença , Proteínas de Membrana/genética , Infecções por Respirovirus/genética , Alelos , Asma/diagnóstico , Asma/etiologia , Asma/fisiopatologia , Bronquiolite/complicações , Bronquiolite/diagnóstico , Bronquiolite/fisiopatologia , Estudos de Casos e Controles , Criança , Pré-Escolar , China , Progressão da Doença , Feminino , Expressão Gênica , Frequência do Gene , Humanos , Lactente , Masculino , Polimorfismo de Nucleotídeo Único , Sons Respiratórios/diagnóstico , Sons Respiratórios/etiologia , Sons Respiratórios/fisiopatologia , Respirovirus/isolamento & purificação , Respirovirus/patogenicidade , Infecções por Respirovirus/complicações , Infecções por Respirovirus/diagnóstico , Infecções por Respirovirus/fisiopatologia , Fatores de RiscoRESUMO
BACKGROUND: The effects of physical therapy on heart rate variability (HRV), especially in children, are still inconclusive. OBJECTIVE: We investigated the effects of conventional physical therapy (CPT) for airway clearance and nasotracheal suction on the HRV of pediatric patients with acute bronchiolitis. METHOD: 24 children were divided into two groups: control group (CG, n=12) without respiratory diseases and acute bronchiolitis group (BG, n=12). The heart rate was recorded in the BG at four different moments: basal recording (30 minutes), 5 minutes after the CPT (10 minutes), 5 minutes after nasotracheal suction (10 minutes), and 40 minutes after nasotracheal suction (30 minutes). The CG was subjected to the same protocol, except for nasotracheal suction. To assess the HRV, we used spectrum analysis, which decomposes the heart rate oscillations into frequency bands: low frequency (LF=0.04-0.15Hz), which corresponds mainly to sympathetic modulation; and high frequency (HF=0.15-1.2Hz), corresponding to vagal modulation. RESULTS: Under baseline conditions, the BG showed higher values in LF oscillations, lower values in HF oscillations, and increased LF/HF ratio when compared to the CG. After CPT, the values for HRV in the BG were similar to those observed in the CG during basal recording. Five minutes after nasotracheal suction, the BG showed a decrease in LF and HF oscillations; however, after 40 minutes, the values were similar to those observed after application of CPT. CONCLUSIONS: The CPT and nasotracheal suction, both used for airway clearance, promote improvement in autonomic modulation of HRV in children with acute bronchiolitis. .
Assuntos
Feminino , Humanos , Lactente , Masculino , Sistema Nervoso Autônomo/fisiopatologia , Bronquiolite/fisiopatologia , Bronquiolite/terapia , Drenagem Postural , Frequência Cardíaca , Modalidades de Fisioterapia , Doença AgudaAssuntos
Gasometria/história , Bronquiolite/fisiopatologia , Monitorização Fisiológica/história , Oxigênio/administração & dosagem , Respiração , Bronquiolite/virologia , História do Século XX , Humanos , Lactente , Pediatria , Publicações Periódicas como Assunto , Infecções por Vírus Respiratório Sincicial/fisiopatologiaRESUMO
BACKGROUND: The effects of physical therapy on heart rate variability (HRV), especially in children, are still inconclusive. OBJECTIVE: We investigated the effects of conventional physical therapy (CPT) for airway clearance and nasotracheal suction on the HRV of pediatric patients with acute bronchiolitis. METHOD: 24 children were divided into two groups: control group (CG, n=12) without respiratory diseases and acute bronchiolitis group (BG, n=12). The heart rate was recorded in the BG at four different moments: basal recording (30 minutes), 5 minutes after the CPT (10 minutes), 5 minutes after nasotracheal suction (10 minutes), and 40 minutes after nasotracheal suction (30 minutes). The CG was subjected to the same protocol, except for nasotracheal suction. To assess the HRV, we used spectrum analysis, which decomposes the heart rate oscillations into frequency bands: low frequency (LF=0.04-0.15 Hz), which corresponds mainly to sympathetic modulation; and high frequency (HF=0.15-1.2 Hz), corresponding to vagal modulation. RESULTS: Under baseline conditions, the BG showed higher values in LF oscillations, lower values in HF oscillations, and increased LF/HF ratio when compared to the CG. After CPT, the values for HRV in the BG were similar to those observed in the CG during basal recording. Five minutes after nasotracheal suction, the BG showed a decrease in LF and HF oscillations; however, after 40 minutes, the values were similar to those observed after application of CPT. CONCLUSIONS: The CPT and nasotracheal suction, both used for airway clearance, promote improvement in autonomic modulation of HRV in children with acute bronchiolitis.
Assuntos
Sistema Nervoso Autônomo/fisiopatologia , Bronquiolite/fisiopatologia , Bronquiolite/terapia , Drenagem Postural , Frequência Cardíaca , Modalidades de Fisioterapia , Doença Aguda , Feminino , Humanos , Lactente , MasculinoRESUMO
OBJECTIVE: To compare the expiratory flow increase technique (EFIT) and vibration accompanied by postural drainage (PD) in terms of their effects on the heart rate (HR), respiratory rate (RR) and SpO(2) of infants with acute viral bronchiolitis (AVB). METHODS: Infants with clinical and radiological diagnosis of AVB were analyzed. The HR, RR and SpO(2) were registered at four time points: prior to the procedure; and at 10, 30 and 60 min after the procedure. The patients were divided into three groups: submitted to the EFIT; submitted to vibration/PD; and control. RESULTS: We included 81 infants, 27 per group, with a mean age of 4.52 years and a mean weight of 6.56 kg. Using ANOVA, we found that the EFIT and vibration/PD groups presented no significant differences in relation to the control group in terms of the mean values for HR, RR or SpO(2) (p > 0.05). Considering only the four time points evaluated, the mean RR was significantly lower in the EFIT and vibration/PD groups than in the control group (p < 0.05). CONCLUSIONS: In terms of overall improvement of cardiorespiratory parameters, neither the EFIT nor vibration/PD provided any benefit to infants with BVA. However, over time, respiratory physical therapy seems to contribute to decreasing the RR in these patients.
Assuntos
Bronquiolite/fisiopatologia , Bronquiolite/terapia , Frequência Cardíaca/fisiologia , Taxa Respiratória/fisiologia , Terapia Respiratória/métodos , Doença Aguda , Análise de Variância , Oscilação da Parede Torácica/métodos , Drenagem Postural/métodos , Feminino , Humanos , Lactente , Masculino , Oxigênio/sangue , Fatores de Tempo , Capacidade Vital/fisiologiaRESUMO
OBJETIVO: Comparar os efeitos das técnicas de aumento do fluxo expiratório (AFE) e vibração associada à drenagem postural (DP) nos parâmetros cardiorrespiratórios de frequência cardíaca (FC), frequência respiratória (FR) e SpO2 de lactentes com bronquiolite viral aguda (BVA). MÉTODOS: Foram analisados lactentes com diagnóstico clínico e radiológico de BVA. A FC, FR e SpO2 foram registradas em quatro tempos: antes do procedimento e após 10, 30 e 60 min do término do procedimento. Os pacientes foram divididos em três grupos: submetido à AFE; submetido à vibração/DP; e controle. RESULTADOS: Foram incluídos no estudo 81 lactentes, 27 em cada grupo de estudo, com média de idade de 4,52 meses e peso médio de 6,56 kg. Na comparação por ANOVA, as médias da FR, FC e SpO2 nos grupos AFE e vibração/DP não apresentaram diferenças significantes em relação ao grupo controle (p > 0,05). Considerando somente os quatro tempos, houve queda significante dos valores médios de FR nos grupos AFE e vibração/DP em relação ao controle (p < 0,05). CONCLUSÕES: A aplicação de AFE e de vibração associada à DP não apresentou um benefício global na melhora dos parâmetros cardiorrespiratórios em lactentes com BVA. Quando analisados isoladamente no decorrer do tempo, a fisioterapia respiratória parece contribuir na diminuição da FR nesses pacientes.
OBJECTIVE: To compare the expiratory flow increase technique (EFIT) and vibration accompanied by postural drainage (PD) in terms of their effects on the heart rate (HR), respiratory rate (RR) and SpO2 of infants with acute viral bronchiolitis (AVB). METHODS: Infants with clinical and radiological diagnosis of AVB were analyzed. The HR, RR and SpO2 were registered at four time points: prior to the procedure; and at 10, 30 and 60 min after the procedure. The patients were divided into three groups: submitted to the EFIT; submitted to vibration/PD; and control. RESULTS: We included 81 infants, 27 per group, with a mean age of 4.52 years and a mean weight of 6.56 kg. Using ANOVA, we found that the EFIT and vibration/PD groups presented no significant differences in relation to the control group in terms of the mean values for HR, RR or SpO2 (p > 0.05). Considering only the four time points evaluated, the mean RR was significantly lower in the EFIT and vibration/PD groups than in the control group (p < 0.05). CONCLUSIONS: In terms of overall improvement of cardiorespiratory parameters, neither the EFIT nor vibration/PD provided any benefit to infants with BVA. However, over time, respiratory physical therapy seems to contribute to decreasing the RR in these patients.
Assuntos
Feminino , Humanos , Lactente , Masculino , Bronquiolite/fisiopatologia , Bronquiolite/terapia , Frequência Cardíaca/fisiologia , Taxa Respiratória/fisiologia , Terapia Respiratória/métodos , Doença Aguda , Análise de Variância , Oscilação da Parede Torácica/métodos , Drenagem Postural/métodos , Oxigênio/sangue , Fatores de Tempo , Capacidade Vital/fisiologiaRESUMO
OBJECTIVES: To evaluate the association between deadspace/tidal volume ratio (Vd/Vt) and gas exchange variables: Pao2, Paco2, Pao2/Fio2, arterial/alveolar oxygen tension ratio (Pao2/PAo2), alveolar-arterial oxygen tension difference/arterial oxygen tension ratio (P(A-a)o2/Pao2), carbon dioxide production (Vco2), ventilation index ([Paco2 x peak inspiratory pressure x mechanical respiratory rate]/1000), and oxygenation index ([mean airway pressure x Fio2 x 100]/Pao2), all measured at an early stage in children with obstructive acute respiratory failure. DESIGN: Prospective, cross-sectional, observational study. SETTING: Pediatric intensive care unit, university hospital. PATIENTS: Twenty-nine infants with acute bronchiolitis, defined according to clinical and radiologic criteria. Children with chronic pulmonary disease, neuromuscular disease, congenital cardiopathies, or hemodynamic instability were excluded. INTERVENTIONS: Measurements were made between 24 and 72 hrs of mechanical ventilation using volumetric capnography and arterial blood gas analysis. MEASUREMENTS AND MAIN RESULTS: The following variables significantly correlated with Vd/Vt, calculated using Spearman's correlation coefficient (rs): Pao2 (rs = -0.63, p < .001), Pao2/Fio2 (rs = -0.56, p = .002), Pao2/PAo2 (rs = -0.46, p = .012), P(A-a)o2/Pao2 (rs = -0.46, p = .012), Paco2 (rs = 0.51, p = .005), Vco2 (rs = -0,62, p < .01), oxygenation index (rs = 0.48, p = .009), and ventilation index (rs = -0.53, p = .003). A statistically significant association was found between an increase in Vd/Vt and severity of lung injury, defined as Pao2/Fio2 <200 (p = .03, Mann-Whitney). CONCLUSIONS: In the study population, Vd/Vt not only reflected ventilatory disorders, as is well recognized, but also was associated with disturbances of oxygenation. These results warrant further evaluation of the usefulness of serial measurement of Vd/Vt as a marker of disease severity in severe acute bronchiolitis and other causes of respiratory failure.
Assuntos
Bronquiolite/fisiopatologia , Troca Gasosa Pulmonar , Respiração Artificial , Espaço Morto Respiratório , Doença Aguda , Bronquiolite/terapia , Estudos Transversais , Feminino , Hospitais Universitários , Humanos , Lactente , Unidades de Terapia Intensiva Pediátrica , Masculino , Estudos Prospectivos , Volume de Ventilação PulmonarRESUMO
BACKGROUND: The clinical and physiologic features of respiratory bronchiolitis (RB)-interstitial lung disease (ILD) have been previously described; however, the natural history and outcome have not been systematically evaluated. The majority of published reports consider RB-ILD to be a nonprogressive ILD that clinically improves with smoking cessation and antiinflammatory treatment. In this study, we sought to determine the outcome of RB-ILD patients with and without smoking cessation and with and without corticosteroid therapy. METHODS: Thirty-two RB-ILD cases confirmed by surgical lung biopsy were identified from a prospectively enrolled cohort of subjects with ILD. Initial and follow-up data on symptoms, physiology, treatment, and outcome were collected and analyzed. RESULTS: Kaplan-Meier analysis revealed that at least 75% of RB-ILD patients survived > 7 years after diagnosis. Clinical improvement occurred in only 28% of cases, and physiologic improvement occurred in 10.5% of cases. One patient died of progressive ILD, and two patients died of non-small cell lung cancer. While physiologic improvement was limited to those who had ceased smoking, corticosteroids and/or other immunosuppressive therapy had little effect on symptoms or physiology. CONCLUSIONS: This study shows that prolonged survival is common in RB-ILD. However, symptomatic and physiologic improvement occurs in only a minority of patients, and neither smoking cessation nor immunosuppressive therapy is regularly associated with clinically significant benefit.