Patient (n=44) characteristics and procedure-related data (n=63)
| Age, median (IQR), years | 1.0 (0.0–3.8, 0.0–56) |
| Sex, female/male, % | 52.3/47.7 |
| Weight, median (IQR), kg | 9.5 (4.1–17.0, 1.3–74.3) |
| Height, median (IQR), cm | 76.0 (50–111, 40–80) |
| Body surface area, median (IQR), m2 | 0.45 (0.24–0.72, 0.12–1.93) |
| Access, n (%) | |
| Right jugular vein | 34 (53.9) |
| Left jugular vein | 17 (27.0) |
| Right subclavian vein | 2 (3.2) |
| Left subclavian vein | 1 (1.6) |
| Right common carotid artery | 7 (11.1) |
| Left common carotid artery | 2 (3.2) |
| Sheath size, median (IQR), Fr | 4.0 (4.0–5.7, 2.7–18.0) |
| Procedure time (mean ± SD), min | 217±12 |
| Fluoroscopy time (mean ± SD), min | 28.1±3.1 |
| Dose area product (mean ± SD), µGy*cm2 | 1845±705 |
| General anaesthesia, yes/no, % | 59/41 |