Page 64 - Virtual Vascular Vol 14
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Retained IV cannula
Intravenous cannulation
IV cannula set up is a common procedure in the hospital setting. IV cannula
has size ranges from 14G to26G (The large the number, the smaller the
diameter). Rate of fluid infusion is directly proportional to the diameter AND
inversely proportional to the length of the cannula.
The more commonly used cannula for usual indications such as antibiotics
injection is 20G or 22G. Bigger cannula (e.g. 16G or 18G) is used during
aggressive resuscitation.
The plastic portion of the cannula is made of PTEF (Poly-Tetra-Fluro-Ethylene)
or FEP (Flurinated-Ethylene) or PUR (Polyurethane) that allows placement in
vein for a reasonable period of time.
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