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New reference values for maximum respiratory pressures in healthy Brazilian children following guidelines

Ana Aline Marcelino1,2, Guilherme Augusto Fregonezi1,2, Maria das Graças Lira1,2

  • 1PneumoCardioVascular Lab/HUOL, Hospital Universitário Onofre Lopes, Empresa Brasileira de Serviços Hospitalares and Departamento de Fisioterapia Universidade Federal do Rio Grande do Norte, Natal, Brazil.

Plos One
|December 29, 2022
PubMed

Insights

This study established new reference values for maximum respiratory pressures in healthy Brazilian children aged 6-11. The findings provide essential data for assessing pediatric respiratory health in the region.

Area of Science:

  • Pediatric Pulmonology
  • Respiratory Physiology
  • Biostatistics

Background:

  • Establishing normative data for respiratory muscle strength is crucial for diagnosing and managing pediatric respiratory conditions.
  • Existing reference values may not accurately represent diverse populations, necessitating region-specific studies.

Purpose of the Study:

  • To determine reference values for maximum static respiratory pressures in healthy Brazilian children.
  • To develop prediction equations for maximal inspiratory and expiratory pressures (PImax and PEmax) in this population.
  • To adhere to European Respiratory Society (ERS) and Brazilian Society of Pneumology and Tisiology (SBPT) guidelines.

Main Methods:

  • A cross-sectional observational study involving 121 healthy children aged 6-11 years.
  • Maximal static respiratory pressures (PImax and PEmax) measured using a digital manometer.
  • Statistical analysis included stepwise multiple linear regression to identify predictors (age, weight, sex).

Main Results:

  • Boys exhibited higher maximal respiratory pressures than girls.
  • Respiratory pressures demonstrated a moderate positive correlation with age in both sexes.
  • Prediction equations were derived for PImax (incorporating age and sex) and PEmax (differentiated by sex and age/weight).

Conclusions:

  • New reference equations for maximal respiratory pressures in healthy Brazilian children were established.
  • These equations provide valuable tools for clinical assessment and research in pediatric respiratory health.
  • The study highlights the importance of age and sex in predicting respiratory muscle strength in children.
Abstract

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