Treatments and outcomes for infants ≥32 weeks gestation who received assisted ventilation for ≥4 hours
| Treatments and outcomes | 32–33 weeks (n=474) | 34–36 weeks (n=626) | 37–38 weeks (n=285) | 39–40 weeks (n=313) | >40 weeks (n=174) | All ≥32 (n=1872) |
|---|---|---|---|---|---|---|
| Data are presented as n (%) or as median (25th,75th centiles) and exclude infants ≥32 weeks who had major surgery. | ||||||
| *For infants who received this treatment and survived to go home. | ||||||
| †For infants who received IPPV. | ||||||
| ‡For infants who survived to go home. | ||||||
| IPPV, Intermittent positive pressure ventilation; CPAP, continuous positive airways pressure; PMA, postmenstrual age. | ||||||
| Reason for respiratory support | ||||||
| Hyaline membrane disease | 182 (41) | 211 (37) | 51 (20) | 14 (5) | 10 (6) | 468 (27) |
| Non-specific respiratory distress | 189 (43) | 251 (44) | 99 (38) | 89 (30) | 37 (22) | 665 (38) |
| Pneumonia | 20 (5) | 40 (7) | 35 (13) | 42 (14) | 15 (9) | 152 (9) |
| Newborn encephalopathy | 3 (1) | 3 (1) | 13 (5) | 23 (8) | 12 (7) | 54 (3) |
| Pulmonary hypertension | 2 (0) | 6 (1) | 8 (3) | 24 (8) | 10 (6) | 50 (3) |
| Meconium aspiration | 0 (0) | 1 (0) | 12 (5) | 57 (19) | 54 (32) | 124 (7) |
| Congenital malformation | 3 (1) | 11 (2) | 9 (3) | 16 (5) | 9 (5) | 48 (3) |
| Mode of assisted ventilation | ||||||
| IPPV + CPAP | 74 (16) | 85 (14) | 50 (18) | 45 (14) | 35 (20) | 289 (15) |
| CPAP only | 375 (79) | 507 (81) | 205 (72) | 212 (68) | 116 (67) | 1415 (76) |
| IPPV only | 25 (5) | 34 (5) | 30 (11) | 56 (18) | 23 (13) | 168 (9) |
| Days of assisted ventilation* | 2 (1,4) | 2 (1,4) | 2 (1,4) | 1 (1,2) | 2 (1,3) | 2 (1,4) |
| Days of supplemental oxygen* | 2 (1,4) | 3 (1,5) | 3 (1,5) | 2 (1,4) | 2 (1,4) | 2 (1,5) |
| Respiratory treatments† | ||||||
| High frequency ventilation | 5 (5) | 4 (3) | 1 (1) | 7 (7) | 5 (9) | 22 (5) |
| Nitric oxide | 5 (5) | 8 (7) | 16 (20) | 21 (21) | 28 (48) | 78 (17) |
| Air leak requiring drainage | 14 (3) | 31 (5) | 22 (9) | 14 (5) | 9 (5) | 90 (5) |
| Survived to discharge home | 470 (99) | 620 (99) | 273 (96) | 284 (91) | 165 (95) | 1812 (97) |
| Length of stay (days)‡ | 26 (22,34) | 15 (11,20) | 9 (6,12) | 7 (5,10) | 7 (5,11.5) | 14 (8,24) |
| PMA at discharge home (weeks)‡ | 36.3 (35.6,37.3) | 37.1 (36.6,37.7) | 38.9 (38.3,39.4) | 40.9 (40.4,41.1) | 42.4 (41.9,43.0) | 37.9 (36.6,40.1) |