Percentage of grade III–IV PVH/IVH by tocolytic treatment, stratified by gestational age, birth weight, and antenatal steroid treatment
| No tocolysis | Magnesium | Ritodrine | Indomethacin | Total | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| No | % IVH | No | % IVH | No | % IVH | No | % IVH | No | % IVH | ||||||||||
| Gestational age (weeks) | |||||||||||||||||||
| 24–25 | 193 | 41.5 | 45 | 31.1 | 31 | 12.9 | 24 | 33.3 | 293 | 36.2 | |||||||||
| 26–27 | 441 | 22.7 | 71 | 16.9 | 63 | 11.1 | 39 | 10.3 | 614 | 20.0 | |||||||||
| 28–29 | 604 | 15.6 | 111 | 4.5 | 88 | 3.4 | 68 | 5.9 | 872 | 12.2 | |||||||||
| ⩾30 | 775 | 2.6 | 114 | 3.7 | 81 | 0.0 | 46 | 15.2 | 1017 | 3.8 | |||||||||
| Birth weight (g) | |||||||||||||||||||
| <750 | 212 | 30.7 | 29 | 27.6 | 30 | 6.7 | 19 | 42.1 | 290 | 28.6 | |||||||||
| 750–999 | 500 | 21.2 | 87 | 17.2 | 63 | 12.7 | 53 | 13.2 | 704 | 19.3 | |||||||||
| 1000–1249 | 585 | 14.0 | 113 | 4.4 | 80 | 3.8 | 52 | 3.9 | 880 | 11.1 | |||||||||
| ⩾1250 | 716 | 7.0 | 112 | 5.4 | 90 | 1.1 | 53 | 11.3 | 972 | 6.5 | |||||||||
| Steroid treatment | |||||||||||||||||||
| Full | 652 | 6.6 | 216 | 7.4 | 172 | 2.3 | 121 | 10.7 | 1163 | 6.5 | |||||||||
| Partial | 306 | 15.0 | 98 | 12.2 | 61 | 9.8 | 24 | 16.7 | 489 | 13.9 | |||||||||
| None | 1049 | 20.2 | 27 | 22.2 | 28 | 14.3 | 29 | 20.7 | 1133 | 20.1 | |||||||||
The number of infants and percentage of grade III–IV PVH/IVH in the specific category are shown.
PVH, Periventricular haemorrhage; IVH, intraventricular haemorrhage.