Early life lung function and respiratory outcome in the first year of life

Area of Science:

• Pediatrics
• Respiratory Medicine
• Neonatology

Background:

• Abnormal early life lung function is linked to childhood wheezing.
• Limited data exist on the association between early lung function and infant cough.
• Understanding these relationships is crucial for early identification and management of respiratory issues.

Purpose of the Study:

• To investigate the association between early life lung function and the occurrence of wheeze and cough in the first year of life.
• To adjust for potential confounding factors in the analysis.
• To determine if wheeze and cough should be considered distinct entities in relation to early lung function.

Main Methods:

• Utilized data from the Wheezing Illnesses Study Leidsche Rijn (WHISTLER) cohort.
• Performed lung function measurements (respiratory resistance - R(rs), time constant - τ(rs), respiratory compliance - C(rs)) before 2 months of age.
• Collected data on pre- and perinatal factors, and respiratory symptoms via questionnaires; analyzed using multivariable Poisson regression.

Main Results:

• Higher respiratory resistance (R(rs)) and time constant (τ(rs)) were associated with increased risk of wheeze and cough.
• Higher respiratory compliance (C(rs)) was associated with a decreased risk of wheeze and cough.
• Early lung function parameters (R(rs), C(rs), τ(rs)) were independent predictors of both wheeze and cough.

Conclusions:

• Infant lung function shortly after birth is significantly associated with wheeze and cough during the first year of life.
• The differing strengths of association for wheeze and cough indicate they are distinct clinical entities.
• These findings support the use of early lung function as a biomarker for predicting infant respiratory symptoms.