Background data for 20 subjects hospitalised for congenital laryngomalacia (CLM) and 20 healthy control subjects with no such history
| CLM (n=20*) | Control (n=20) | p Value | |
|---|---|---|---|
| Female ratio (% of group) | 7/20 (35) | 8/20 (40) | – |
| Age; year | 12.7 (2.7) | 13.8 (1.4) | 0.2 |
| Height; cm | 157.5 (12.3) | 162.8 (9.6) | 0.1 |
| Weight; kg | 50.6 (15.7) | 51.9 (10.5) | 0.8 |
| BMI | 20.2 (4.7) | 19.4 (2.6) | 0.5 |
| FVC; % predicted | 94.8 (11.4) | 93.8 (13.1) | 0.8 |
| FEV1; % predicted | 100.1 (11) | 101.3 (12.4) | 0.7 |
| FEV1/FVC; % predicted | 90.2 (7.1) | 90.7 (6) | 0.8 |
| Findings at peak exercise | |||
| Heart rate; bpm | 186 (7.8) | 194 (9.0) | 0.006 |
| VO2; mL/kg/min | 50.1 (9) | 54.4 (10.8) | 0.2 |
| Minute ventilation; litre | 68.1 (17.8) | 79.7 (22.7) | 0.9 |
| Breathing reserve; % | 24.8 (13.6) | 22.7 (14.2) | 0.6 |
| Respiratory rate | 46.3 (8.4) | 47.4 (7.2) | 0.7 |
Except ratios, figures are mean values (SD). Per cent predicted refers to Quanjer et al.27 p Values are calculated by two-sample t tests for all analyses.
*For two patients in the CLM group, background information was missing.
FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity.