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Screen time and pulmonary function in hospitalized children with cystic fibrosis

Vanessa Dos Santos Rodrigues1, Caroline Schmidt2, Gleice Kelly Medeiros1

  • 1. Programa de Saúde da Criança, Hospital de Clínicas de Porto Alegre - HCPA - Universidade Federal do Rio Grande do Sul - UFRGS - Porto Alegre (RS) Brasil.

Jornal Brasileiro De Pneumologia : Publicacao Oficial Da Sociedade Brasileira De Pneumologia E Tisilogia
|June 17, 2026
PubMed

Insights

Excessive screen time (ST) is linked to poorer lung function in hospitalized children with cystic fibrosis (CF). Older age and more TV time at home also correlated with worse outcomes.

Area of Science:

  • Pediatric Pulmonology
  • Cystic Fibrosis Research
  • Digital Health Impact

Background:

  • Cystic Fibrosis (CF) requires ongoing management, including monitoring lung function.
  • Hospitalization in CF patients often involves limited activities, potentially increasing screen time.
  • The impact of screen time on health outcomes in pediatric CF populations is not well-established.

Purpose of the Study:

  • To investigate the association between screen time (ST) and lung function in hospitalized children and adolescents with CF.
  • To identify factors associated with screen time during hospitalization for CF.

Main Methods:

  • Cross-sectional study involving 45 pediatric CF patients (0-17 years) hospitalized in Brazil.
  • Screen time assessed via recall diary; additional data collected through questionnaires and medical records.
  • Lung function (FEV1 Z-score), nutrition, bacteriology, and clinical scores were analyzed.

Main Results:

  • The majority of participants (95.5%) exceeded recommended screen time limits.
  • Median screen time was 315 minutes, primarily due to boredom and lack of activities.
  • Multivariate analysis revealed significant associations between screen time, age, home TV viewing, and FEV1 Z-score.

Conclusions:

  • Elevated screen time is associated with diminished lung function in hospitalized CF children.
  • Older age and greater time spent watching television at home are also linked to poorer lung function outcomes.
  • Findings suggest a need to consider screen time management in pediatric CF care during hospitalization.
Abstract

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