Table 2.
Cardiorespiratory characteristics on each study day
| Day 1 | Day 2 | Day 3 | Day 7 | ||
|---|---|---|---|---|---|
| Mean arterial blood pressure (mm Hg, mean ± SD) | Chorio (+) | 43.6 ± 8.9 | 42.5 ± 8.4 | 44.5 ± 6.8 | 42.9 ± 7.5 |
| Chorio (−) | 42.1 ± 11.4 | 43.5 ± 8.8 | 41.4 ± 6.0 | 43.9 ± 10.6 | |
| Vasopressor support | Chorio (+) | 2 (8) | 3 (13) | 2 (8) | 0 (0) |
| Chorio (−) | 2 (8) | 1 (4) | 0 (0) | 0 (0) | |
| Indomethacin | Chorio (+) | 1 (4) | 4 (17) | 5 (21) | 0 (0) |
| Chorio (−) | 3 (12) | 4 (16) | 1 (4) | 0 (0) | |
| CPAP | Chorio (+) | 3 (13) | 1 (4) | 1 (4) | 2 (8) |
| Chorio (−) | 1 (4) | 3 (12) | 2 (8) | 3 (12) | |
| Ventilation | Chorio (+) | 14 (58) | 10 (42) | 7 (29) | 4 (17) |
| Chorio (−) | 11 (44) | 5 (20) | 5 (20) | 1 (4) | |
| Surfactant | Chorio (+) | 14 (58) | 6 (25) | 0 (0) | 0 (0) |
| Chorio (−) | 10 (40) | 3 (12) | 0 (0) | 0 (0) |
Values given as number (%), unless otherwise indicated.
CPAP, continuous positive airway pressure.