Hospitalizations, poor growth linked to lower quality of life in childhood ILD

Health-related quality of life (HRQoL) in children with interstitial lung disease (ILD) is strongly influenced by clinical and developmental factors such as recent hospitalizations and poor growth, according to a new study by researchers at Dr. von Hauner Children’s Hospital in Munich.

The study, published in the European Respiratory Journal earlier this year provides a comprehensive theory on how medical and social factors shape daily functioning and well-being in this rare pediatric lung disease.

Led by Matthias Griese, M.D., the study team analyzed HRQoL data from 424 children diagnosed with childhood ILD across 10 European countries and 48 clinical centers. The researchers utilized data from the chILD-EU Register, a large collaborative network designed to better understand the clinical course and outcomes of these uncommon but serious respiratory conditions.

Childhood ILD is a group of rare disorders characterized by inflammation or scarring of lung tissue that can impair breathing and oxygen exchange. Symptoms often include chronic cough, shortness of breath and growth problems, with treatment options being limited. Because of the chronic and often progressive nature of the disease, evaluating quality of life has become increasingly important for understanding its broader impact on patients and families.

To assess HRQoL, caregivers of the cohort were asked to complete both a disease-specific questionnaire designed for children with iILD and the generic Pediatric Quality of Life Inventory (PedsQL 4.0). Griese and the team examined clinical and sociodemographic factors that might influence HRQoL scores using statistical models that accounted for multiple variables simultaneously.

Among the strongest predictors of lower HRQoL scores was recent inpatient medical care. Children who had been hospitalized within the previous three months scored roughly 11% to 14% lower on quality-of-life measures than those without recent hospital admissions. According to the authors, this finding underscores the substantial physical and emotional burden that hospital stays can impose on children with chronic lung disease.

Failure to thrive, which the researchers defined as “inadequate growth or weight gain” was another major factor associated with reduced HRQoL. The data revealed children experiencing growth problems had scores approximately 9% to 12% lower than those without growth impairment. The authors noted that poor growth often reflects underlying disease severity and can significantly affect daily functioning, social participation and overall well-being.

An interesting finding from the study was that lung function itself showed only a weak relationship with quality-of-life outcomes. Among the subgroup of children old enough to undergo pulmonary function testing, investigators found limited correlation between test results and HRQoL scores. This suggests, the authors noted, that traditional physiologic measures may not fully capture the patient experience and highlights the value of patient-reported or caregiver-reported outcomes in clinical care and research.

Overall, the findings reflect a broader shift in respiratory medicine toward incorporating patient-centered outcomes alongside traditional clinical metrics. In rare diseases such as chILD, understanding how symptoms affect daily life may be particularly important because survival statistics or physiologic markers alone provide an incomplete picture of disease burden.

The study’s results also carry potential implications for clinical management. By identifying modifiable factors linked to poorer HRQoL, clinicians may be able to target interventions that improve not only medical outcomes but also children’s overall well-being.

For example, strategies aimed at preventing disease exacerbations that lead to hospitalization could help stabilize quality-of-life outcomes. Similarly, early nutritional support and monitoring for growth problems may mitigate some of the developmental and functional impacts of the disease.

The authors noted that further research is needed to determine whether interventions addressing these factors can lead to measurable improvements in HRQoL.