Effect of preterm birth on later FEV₁: a systematic review and meta-analysis

Lung function after extremely preterm birth—A population‐based cohort study (EXPRESS)

“…26,27 Depending on which reference used in the calculations, we found that the mean z-score for AX (before reversibility test) among healthy 6½-year-old children participating in our study (those with asthma reductions of 16% associated with mild BPD and 19% for moderate to severe BPD. 29 The modest or non-significant differences in lung function related to degree of BPD found by us and others indicate that childhood respiratory dysfunction can essentially be related to gestational age, and that BPD classification seems to be of limited value for predicting future lung function measured by spirometry. [30][31][32] | 69…”

Early growth characteristics and the risk of reduced lung function and asthma: A meta-analysis of 25,000 children

“…A 255 recent meta-analysis of 28 published studies showed that children born between 24 and 36 256 weeks had a lower FEV1 at ages 5 up to 23 years (42). These and other studies suggest that 257 preterm birth has adverse effects on lung function, persisting into adulthood (42)(43)(44). 258…”

Lung Function at 8 and 16 Years After Moderate-to-Late Preterm Birth: A Prospective Cohort Study

“…Quality control was performed at the time of examination by visual inspection of the waveforms. Given that coherence, which is a measure of testing reliability, was >0.80 at 10 Hz, the mean value of resistance at 5 Hz (R 5 ), resistance at 20 Hz (R 20 ), frequency dependence of resistance (ie, R [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20], and reactance area (AX) were used for analysis. AX may boost the assessed response inappropriately compared with the R 5-20 response because it multiplies 2 partly independent reactions of the airways.…”

“…3,4 Available studies on moderate to late prematurity in relation to airway obstruction in infants and toddlers report increased respiratory morbidity during early childhood. [5][6][7][8][9][10][11] Few studies are available on lung function at school age and adolescence in this group, however, and the results are somewhat conflicting. 12,13 Furthermore, although spirometry is a well-established method to assess lung function by measuring expiratory flow rates and volumes, other lung function techniques aiming to assess peripheral airway function and mechanics, such as forced oscillation, have been shown to be more sensitive than spirometry for detection of airway obstruction in children with lung disease, including follow-up studies of children born very preterm.…”