Equipment Terms
over-the-needle catheter
Pronunciation
(
'v
r n
-dl k
th'-tr)
Definitions
A flexible tube that enables passage of fluid from or into a blood vessel. Consists of a needle with a catheter sheath.
Application
A # 20 gauge over-the-needle catheter was used to initiate the infusion on the adult waiting for outpatient surgery.
Keep in Mind
Most common peripheral infusion device. The point of the needle extends beyond the tip of the catheter. After venipuncture, the needle (stylet) is withdrawn. ONCs are sized by even numbers.