Table 2.
Tidal breathing outcomes
| Term healthy n = 86 | Preterm without BPD n = 35 | Preterm with BPD n = 22 | |
|---|---|---|---|
| Respiratory rate | 42.60 (7.84) | 48.32 (12.45) | 49.92 (13.01) |
| Sighs/10 min | 1.52 (0.65) | 1.41 (0.67) | 2.00 (1.08) |
| Sighs/1000 breaths | 3.67 (1.69) | 3.16 (1.77) | 4.28 (2.40) |
| VI,max/VT,pre | 3.07 (0.99) | 2.92 (0.65) | 2.76 (0.63) |
| VE,max/VT,pre | 2.32 (0.68) | 2.37 (0.62) | 2.50 (0.45) |
| VE,max/VI,max | 0.79 (0.18) | 0.84 (0.21) | 0.93 (0.16) |
| VT,pre (mL) | 32.95 (5.67) | 32.17 (7.60) | 27.31 (4.96) |
| VT,post (mL) | 23.18 (7.74) | 23.04 (6.58) | 20.53 (6.25) |
| VT,diff (mL) | 9.76 (7.28) | 9.01 (6.92) | 6.78 (4.93) |
| VThigh after sigh (breaths) | 4.69 (4.84) | 5.02 (5.36) | 3.39 (4.55) |
| VT,end (mL) | 32.71 (5.61) | 30.71 (7.37) | 26.48 (4.96) |
| CVpre | 0.08 (0.06) | 0.06 (0.03) | 0.07 (0.06) |
| CVprior | 0.09 (0.10) | 0.08 (0.07) | 0.08 (0.06) |
| CVpost | 0.37 (0.16) | 0.32 (0.12) | 0.27 (0.15) |
| CVdiff | 0.30 (0.16) | 0.26 (0.12) | 0.20 (0.16) |
| CVpost_slope | 0.96 (0.92) | 1.58 (1.80) | 2.58 (2.26) |
| CVend | 0.10 (0.07) | 0.09 (0.08) | 0.07 (0.03) |
Values are given as mean (SD).