Table 5.

Lung Function and Exposure to Antenatal Corticosteroid Therapy

Lung
Function
Variable
Antenatal CS
n = 69
Mean (SD)
No Antenatal CS
n= 61
Mean (SD)
Mean
Difference
(95% CI)
FEV1, % pr96.1 (14.0)94.9 (15.0)1.2 (−4.1, 6.5)
FVC, % pr100.0 (12.7)99.7 (12.3) .4 (−4.2, 4.9)
FEV1/FVC, %84.4 (8.8)83.5 (9.4) .9 (−2.4, 4.2)
FEF25%–75%, % pr84.8 (26.3)82.3 (25.5)2.6 (−6.9, 12.0)
V'EMAX75%, % pr95.7 (20.8)93.3 (22.9)2.3 (−5.6, 10.3)
V'EMAX50%, % pr96.5 (28.6)94.9 (27.9)1.6 (−9.7, 11.9)
V'EMAX25%, % pr96.6 (38.8)90.9 (35.1)5.8 (−7.7, 19.3)
RV, % pr110.7 (28.0)123.4 (52.8)−12.7 (−27.7, 2.3)
TLC, % pr97.9 (11.8)101.2 (15.4)−3.4 (−8.3, 1.6)
RV/TLC, %27.5 (7.3)28.8 (8.8)−1.2 (−4.2, 1.7)
  • CS indicates corticosteroids; % pr, % predicted for height, age and gender; FEV1, forced expired volume in 1 second; FVC, forced vital capacity; FEF25%–75%, forced mid-expiratory flow; V'EMAX75%, flow rate at 75% of vital capacity; V'EMAX50%, flow rate at 50% of vital capacity; V'EMAX25%, flow rate at 25% of vital capacity; RV, residual volume; TLC, total lung capacity.

    No differences statistically significant.