Impulse oscillometry in the assessment of asthmatic children and adolescents: from a narrative to a systematic review

Santos, Karoliny dos; Fausto, Lilian Leite; Camargos, Paulo Augusto Moreira; Kviecinski, Maicon Roberto; Silva, Jane da

doi:10.1016/j.prrv.2016.09.002

Cited by 8 publications

(8 citation statements)

References 28 publications

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“…IOS has been developed as a patient-friendly lung function test that minimizes demands on the patient and requires only passive cooperation with normal breathing through the mouth. It has been successfully used for assessing lung function and asthma control in healthy and asthmatic children [5,6], including preschoolers, and in patients who recently underwent surgery or are unable to perform spirometry, both as an adjunct or even alternative to standard spirometry [4,7,8].…”

Section: Introductionmentioning

confidence: 99%

Virus-Induced Asthma/Wheeze in Preschool Children: Longitudinal Assessment of Airflow Limitation Using Impulse Oscillometry

Konstantinou

Papadopoulos

Manousakis

et al. 2019

JCM

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Several researchers have assessed the utility of Impulse Oscillometry System (IOS) in diagnosing and evaluating the severity of respiratory diseases in childhood, but none has investigated the impact of the fluctuations of IOS parameters in an individualized manner. In this two-year prospective study, we aimed to longitudinally evaluate changes in airflow limitation and bronchodilator responsiveness in steroid-naïve four- to six-year-old children during a virus-induced wheezing episode, with IOS pulmonary resistance parameters set at 5 (R5) and 20 (R20) Hz. Moreover, feasibility and reproducibility, in addition to the diagnostic properties of these parameters were examined. Lung function was assessed every six weeks (baseline), within the first 48 h following an acute wheezing episode (Day 0), after 10, and after 30 days. Forty-three out of 93 recruited children (4.5 ± 0.4 years old) experienced a wheezing episode during the study period. All children were able to perform the IOS effort in an acceptable and highly reproducible manner. R5 and R20 fluctuated independently of atopy, age, height, and weight. On Day 0, R5 values were significantly lower than the respective baseline values and returned to individual baseline levels within 10 days. Post-bronchodilation R5 values were similar to the baseline ones, reflecting a reversible airway obstruction on Day 0. Response to bronchodilation (ΔR5) was significantly more pronounced on Day 0. ΔR5 values lower than −20.5% had a sensitivity of 70% and a specificity of 76% and could accurately identify up to 75% of the examined preschoolers. This study provides evidence in favor of the objective utility of IOS as an easy, highly reproducible, and sensitive technique to assess clinically significant fluctuations and bronchodilation responses suggestive of airflow limitation. Reference values although necessary are suboptimal, utilizing the personal best values as personal reference is useful and reliable.

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Section: Introductionmentioning

confidence: 99%

Virus-Induced Asthma/Wheeze in Preschool Children: Longitudinal Assessment of Airflow Limitation Using Impulse Oscillometry

Konstantinou

Papadopoulos

Manousakis

et al. 2019

JCM

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“…9 It should be noted that this study is characterized by having a convenience sample, in which two children (11 and 13 years old), upon performing spirometry, showed altered values and were excluded. This may be justified by the difficulty in performing the exam, which requires the great collaboration of the individual, 24 and not necessarily the presence of a respiratory disease. IOS evaluates respiratory mechanics noninvasively and has been applied as a diagnostic tool, which provides assessment of pulmonary function, specifically respiratory mechanics, of individuals with asthma, cystic fibrosis, and other respiratory disorders.…”

Section: Discussionmentioning

confidence: 99%

“…IOS evaluates respiratory mechanics noninvasively and has been applied as a diagnostic tool, which provides assessment of pulmonary function, specifically respiratory mechanics, of individuals with asthma, cystic fibrosis, and other respiratory disorders. [24][25][26] To date, the literature has no studies investigating the effects of respiratory physiotherapy techniques on respiratory mechanics. Breathing exercises performed through nasal inspiration and slow and prolonged exhalation, such as the lip frenum, are expected to increase VT, promote pulmonary deflation and airway stability.…”

Section: Discussionmentioning

confidence: 99%

Therapeutic Blowing Toys: Does the Overlap of Ventilatory Stimuli Alter the Respiratory Mechanics of Healthy Schoolchildren?

Schivinski

Manna

Belém

et al. 2020

Rev. paul. pediatr.

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Objective: To verify whether the overlapping of ventilatory stimuli, resulting from playing with blowing toys, changes the respiratory mechanics of healthy schoolchildren.Methods: Cross-sectional study with healthy schoolchildren aged seven to 14 years old from Florianópolis, Santa Catarina, Southern Brazil. Spirometric data were obtained, a health questionnaire and the International Study of Asthma and Allergies in Childhood (ISAAC) questionnaire were also applied. The procedure consisted of playing with the following blow toys in a random order: soap bubbles, party whistles and balloon. Before and after the intervention, the assessment of respiratory mechanics was carried out by impulse oscillometry -IOS (Erich Jaeger, Germany ® ).The ANOVA for repeated measures test was applied.Results: 71 students of both genders with mean age of 9.7±2.1 years participated in the study. Results showed a progressive decrease of impedance (Z5), total airway resistance (R5) and resonance frequency (Fres) when the moment before the use of the first toy was compared with the moment after the third toy (Z5/ p=0.048; R5/p=0.049; Fres/p=0.004). Fres also differed between the moment before the first and the second toy (p=0.048).After the use of each of the three blowing toys, the oscillometric parameters did not differ. Conclusions:The difference in oscillometric parameters of R5 before the use of each toy indicates that the overlap of ventilatory stimuli produced by them provided a reduction in the R5.Objetivo: Verificar se a sobreposição de estímulos ventilatórios decorrentes da execução de brinquedos de sopro altera a mecânica respiratória de escolares saudáveis. Métodos: Estudo transversal com escolares saudáveis de sete a 14 anos de idade, provenientes de Florianópolis, Santa Catarina, Brasil. Foram obtidos dados espirométricos e realizada aplicação de um recordatório de saúde e do questionário International Study of Asthma and Allergies in Childhood (ISAAC). A coleta de dados consistiu na aplicação dos brinquedos bola de sabão, língua de sogra e balão de forma aleatória. Antes e após a intervenção foi realizada a avaliação da mecânica respiratória por meio da oscilometria de impulso -IOS (Erich Jaeger, Germany ® ). Aplicou-se o teste de ANOVA para medidas repetidas. Resultados: Participaram do estudo 71 escolares de ambos os sexos, com média de idade de 9,7±2,1 anos. Houve redução progressiva na impedância respiratória a 5 hertz (Z5), na resistência total das vias aéreas (resistência a 5 hertz -R5) e na frequência de ressonância (Fres) ao comparar o momento antes do uso do primeiro e do terceiro brinquedo (Z5/p=0,048; R5/p=0,049; Fres/ p=0,004). Fres também diferiu no momento antes do primeiro e do segundo brinquedo (p=0,048). Após o uso de cada um dos três brinquedos, os parâmetros oscilométricos não diferiram. Conclusões: Observando a diferença nos parâmetros oscilométricos da R5 antes do uso de cada um dos brinquedos, notou-se que a sobreposição de estímulos ventilatórios produzidos por eles proporcionou uma redução na R5. Pa...

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“…Small airways dysfunction in asthma is now widely recognized (9)(10)(11). Spirometric variables such as FEV 1 are affected by flow resistance at the large airways.…”

Section: Questions On the Need For Alternative Testsmentioning

confidence: 99%

“…Advantages of FOT over spirometry and other tests of airway resistance have been described recently (9). Yet, a systematic review could not disclose enough evidence to place FOT as an adjunct or as a substituent of spirometry (10). Despite the FOT gaining interest, the lack of familiarity with the technique, lack of equipment, and complexity of analysis still limit its wider adoption.…”

Section: Measurements Of Respiratory Resistancementioning

confidence: 99%

Pulmonary Function Testing in Asthmatic Children. Tests to Assess Outpatients During the Covid-19 Pandemic

et al. 2020

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Impulse oscillometry in the assessment of asthmatic children and adolescents: from a narrative to a systematic review

Cited by 8 publications

References 28 publications

Virus-Induced Asthma/Wheeze in Preschool Children: Longitudinal Assessment of Airflow Limitation Using Impulse Oscillometry

Virus-Induced Asthma/Wheeze in Preschool Children: Longitudinal Assessment of Airflow Limitation Using Impulse Oscillometry

Therapeutic Blowing Toys: Does the Overlap of Ventilatory Stimuli Alter the Respiratory Mechanics of Healthy Schoolchildren?

Pulmonary Function Testing in Asthmatic Children. Tests to Assess Outpatients During the Covid-19 Pandemic

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