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Feasibility and reproducibility of pulmonary function tests in preschoolers

Danielle França, Jocimar Martins, Filipe Athayde, Mercês Abreu, Gilda Araujo, Paulo Camargos, Raquel Britto, Verônica Parreira
European Respiratory Journal 2011 38: p1194; DOI:
Danielle França
1Graduation Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Jocimar Martins
1Graduation Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Filipe Athayde
1Graduation Program in Rehabilitation Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Mercês Abreu
2Department of Nursing, Faculdade Ciências da Vida, Sete Lagoas, Minas Gerais, Brazil
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Gilda Araujo
2Department of Nursing, Faculdade Ciências da Vida, Sete Lagoas, Minas Gerais, Brazil
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Paulo Camargos
3Department of Pediatrics, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Raquel Britto
4Department of Physical Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Verônica Parreira
4Department of Physical Therapy, Universidade Federal de Minas Gerais, Belo Horizonte, Minas Gerais, Brazil
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Abstract

Relevance: Preschoolers present particularities that reinforce the importance of assessing their pulmonary function; however few studies have focused on pulmonary function tests in this population.

Purpose: To assess the feasibility of assessing breathing pattern through inductive respiratory plethysmography, spirometry and peak cough flow (PCF) in healthy preschoolers, as well as the test-retest reproducibility of these tests.

Methods: It was assessed the breathing pattern (tidal volume-Vt; respiratory frequency-f, inspiratory time -Ti, inspiratory duty cycle-Ti/Ttot, mean respiratory flow-Vt/Ti and rib cage motion-%RC), spirometry (forced vital capacity-FVC, forced expiratory volume in 0.5 second-FEV0.5 and FEV0.5/FVC) and PCF of 38 healthy children aged 4.8±0.6 years. To evaluate the test-retest reproducibility, 10 children (according to sample size calculation) were reassessed after three weeks. The study was approved by Ethics Committee. Feasibility was defined as the rate of success achieved by the children. Test-retest reproducibility was evaluated by paired t-test, considering significant p<0.05, and Intraclass Correlation Coefficient (ICC).

Results: The results showed a rate of successes of 100% for breathing pattern, 84% for spirometry and 90% for PCF. Regarding the reproducibility, there were no significant differences between the variables of any test and it were observed the following ICC values: Vt=0.74, f=0.87, Ti=0.88; Ti/Ttot=0.95, Vt/Ti=0.68,%RC=0.66, FVC=0.92, FEV0.5=0.81, FEV0.5/FVC=0.75, PCF=0.85.

Conclusions: These results suggest high rate of success in performing the pulmonary function tests and good test-retest reproducibility in healthy preschoolers.

  • © 2011 ERS
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Feasibility and reproducibility of pulmonary function tests in preschoolers
Danielle França, Jocimar Martins, Filipe Athayde, Mercês Abreu, Gilda Araujo, Paulo Camargos, Raquel Britto, Verônica Parreira
European Respiratory Journal Sep 2011, 38 (Suppl 55) p1194;

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Feasibility and reproducibility of pulmonary function tests in preschoolers
Danielle França, Jocimar Martins, Filipe Athayde, Mercês Abreu, Gilda Araujo, Paulo Camargos, Raquel Britto, Verônica Parreira
European Respiratory Journal Sep 2011, 38 (Suppl 55) p1194;
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