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Assessment of bronchodilator response in preschool children by pulmonary function tests

Babak Ghalibafsabbaghi1, Dinesh Raj, Rakesh Lodha

  • 1Division of Pulmonology, Department of Pediatrics, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India. Correspondence to: Dr S K Kabra, Professor, Division of Pulmonology, Department of Pediatrics, All India Institute of Medical Sciences, Ansari Nagar, New Delhi, 110029, India. skkabra@hotmail.com.

Indian Pediatrics
|June 27, 2013
PubMed

Insights

Pulmonary function tests in children can detect airway changes. Raised volume rapid thoracic compression (RVRTC) showed greater sensitivity in documenting bronchodilator response compared to other methods.

Area of Science:

  • Pediatric Pulmonology
  • Respiratory Physiology

Background:

  • Assessing bronchodilator responsiveness is crucial for diagnosing and managing pediatric airway diseases.
  • Traditional pulmonary function tests (PFTs) may be challenging in young children.

Purpose of the Study:

  • To evaluate the sensitivity of different pulmonary function test techniques in documenting bronchodilator response in children.
  • To compare tidal breathing flow volume loop (TBFVL), rapid thoracic compression (RTC), and raised volume rapid thoracic compression (RVRTC) methods.

Main Methods:

  • Thirty-nine children (mean age 45.2 months) underwent pulmonary function testing.
  • Bronchodilator response was assessed using TBFVL, RTC, and RVRTC techniques.
  • Key spirometric parameters were analyzed before and after bronchodilator administration.

Main Results:

  • The TEF10/PTEF ratio in TBFVL and FEF25-75%, FEV1, and PEF in RVRTC showed significant improvement post-bronchodilator.
  • No significant improvements were observed in parameters measured by the RTC technique.
  • RVRTC demonstrated higher sensitivity in detecting airway changes.

Conclusions:

  • FEV1, PEF, and FEF25-75% measured by RVRTC are sensitive indicators of airway changes in children.
  • RVRTC may be a more effective method for assessing bronchodilator response in pediatric populations.
  • RTC technique showed limited utility in this study for detecting bronchodilator effects.

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