If a vein of appropriate depth and caliber is visualized in Dawson's green zone, it is not necessary to tunnel and the PICC can be implanted with the traditional method: i.e., the venipuncture site will coincides with the emergency site (PICC not tunneled).
Obviously, we must use power injectable PICCs, in latest-generation polyurethane, non-valved and open-ended.
The most widely used PICCs in the pediatric age group are 3Fr single lumen, 4Fr single lumen and 4Fr double-lumen.