Age (Weight) | Venous catheters | ||||
French size* | Length | Wire diameter | Needle gauge | ||
mm | inches | ||||
Neonates (2.5 to 5 kg) | 3.0 | 5 to 12 cm | 0.46 | 0.018 | 21 |
Infants [1 to 12 months] (5 to 10 kg) | 4.0 | 5 to 12 cm | 0.46 to 0.53 | 0.018 to 0.021 | 21, 20, 18 |
>1 to 12 years (10 to 40 kg) | 5.0 | 5 to 25 cm | 0.53 to 0.89 | 0.021 to 0.035 | 20, 18 |
≥13 years (≥50 kg) | 7.0 | 5 to 30 cm | 0.89 | 0.035 | 18, 16 |