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Children with smoking parents have a higher airway resistance measured by the interruption technique

Elisabeth M W Kooi1, Elianne J L E Vrijlandt, H Marike Boezen

  • 1Department of Pediatric Pulmonology, Beatrix Children's Hospital, Groningen University Hospital, The Netherlands. e.kooi@bkk.azg.nl

Pediatric Pulmonology
|October 8, 2004
PubMed

Insights

Passive smoke exposure significantly increases airway resistance in children. This noninvasive measurement, airway resistance (Rint), was higher in children with parents who smoked three or more cigarettes daily.

Area of Science:

  • Pediatric Pulmonology
  • Environmental Health
  • Respiratory Medicine

Background:

  • Children exposed to environmental tobacco smoke exhibit reduced lung function.
  • Current measurement methods include spirometry for schoolchildren and invasive techniques for newborns.
  • The interruption technique (Rint) offers a noninvasive method for assessing airway resistance in young children.

Purpose of the Study:

  • To investigate the impact of passive smoke exposure on airway resistance (Rint) in preschool and school-aged children.
  • To determine if parental smoking habits correlate with increased Rint values.
  • To analyze the association between passive smoke exposure and Rint, controlling for other factors.

Main Methods:

  • A total of 557 children aged 4-12 years from nursery and primary schools participated.
  • Airway resistance (Rint) was measured using the interruption technique.
  • Data on parental smoking, respiratory symptoms, atopy, and family history of asthma were collected via questionnaire.
  • Multiple linear regression analysis was employed to assess associations.

Main Results:

  • Height, age, weight, and respiratory symptoms were associated with Rint values.
  • Atopy and family history of asthma did not significantly affect Rint.
  • Significantly increased Rint values were observed in children whose parents smoked three or more cigarettes daily in their presence.
  • This finding persisted in subgroup analysis of preschool children (4-6 years old).

Conclusions:

  • Passive smoke exposure is linked to significantly higher airway resistance in children.
  • The interruption technique (Rint) is a valuable tool for assessing the effects of passive smoke on pediatric airway resistance.
  • Reducing children's exposure to environmental tobacco smoke is crucial for maintaining healthy lung function.

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