Fig. 1.
Fig. 2.
Fig. 3.
Baseline characteristics of the study cohorts
| Standard high UAC position (n = 50) | Novel ultralow UAC position (n = 38) | p value | |
|---|---|---|---|
| Gestational age (weeks), median, IQR | 30 (27–32) | 30 (27–35) | 0.510 |
| Gestational age (weeks), maximum | 41 | 40 | |
| Gestational age (weeks), minimum | 23 | 25 | |
| Birth weight (g), mean ±SD | 1486 ± 687 | 1545 ± 805 | 0.720 |
| Birth weigh (g), maximum | 4430 | 4150 | |
| Birth weigh (g), minimum | 410 | 560 | |
| Reason for catheterization: | |||
| Prematurity* | 47 (94%) | 35 (92%) | 0.484 |
| Perinatal asphyxia | 2 (4%) | 2 (5.3%) | |
| Congenital defects | 1 (2%) | 1 (2.6%) |