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Forced expiratory flow in uninfected infants and children born to HIV-infected mothers

A A Colin1, J Sunil Rao, X C Chen

  • 1Division of Pulmonary Medicine, Children's Hospital, Department of Pediatrics/Harvard Medical School, Boston, Massachusetts 02115, USA. colin@tch.harvard.edu

American Journal of Respiratory and Critical Care Medicine
|April 3, 2001
PubMed

Insights

Infants exposed to maternal HIV, but uninfected, show slightly reduced maximal expiratory flow (V

Area of Science:

  • Pediatric pulmonology
  • Neonatal health
  • Infectious disease epidemiology

Background:

  • Vertical transmission of HIV can impact infant health.
  • The P(2)C(2) HIV study investigates pulmonary and cardiac outcomes in HIV-exposed infants.
  • Understanding lung function in uninfected infants exposed to maternal HIV is crucial.

Purpose of the Study:

  • To test if infants exposed to maternal HIV but uninfected have normal maximal expiratory flow at functional residual capacity (V'max,(FRC)).
  • To compare lung function parameters between HIV-exposed uninfected infants and a healthy cohort.

Main Methods:

  • Utilized rapid thoracic compression to measure V'max,(FRC) in 285 children aged 6-30 months across five U.S. centers.
  • Collected 500 V'max,(FRC) measurements, comparing data to a healthy control group.
  • Analyzed the relationship between V'max,(FRC), height, weight, birth weight, and gestational age.

Main Results:

  • V'max,(FRC) demonstrated a linear relationship with height in both exposed and unexposed infants.
  • The slope of V'max,(FRC) regression did not differ between groups, but the intercept was approximately 20% lower in exposed infants (p < 0.001).
  • Differences in lung function persisted after adjusting for birth weight and gestational age, but potential confounding factors like socioeconomic status and maternal behaviors were noted.

Conclusions:

  • Maternal HIV infection likely has a minimal impact on maximal expiratory flow at functional residual capacity in uninfected infants.
  • Further research is needed to definitively attribute the observed differences to maternal HIV status, considering potential confounders.
  • Multicenter study highlights the importance of controlling for various factors in pediatric respiratory research.

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