Intravenous therapy or IV therapy is the administration of liquid
substances directly into a vein. It can be intermittent or continuous;
continuous administration is called an intravenous drip. The word
intravenous simply means "within a vein", but is most commonly used to
refer to IV therapy.

A. Indications :
1. Establish or maintain a fluid or electrolyte balance
2. Administer continuous or intermittent medication
3. Administer bolus medication
4. Administer fluid to keep vein open (KVO)
5. Administer blood or blood components
6. Administer intravenous anesthetics
7. Maintain or correct a patient's nutritional state
8. Administer diagnostic reagents
9. Monitor hemodynamic functions

B. IV Devices :
a. Steel Needles :
Example: Butterfly catheter. They are named after the wing-like
plastic tabs at the base of the needle. They are used to deliver small
quantities of medicines, to deliver fluids via the scalp veins in
infants, and sometimes to draw blood samples (although not routinely,
since the small diameter may damage blood cells). These are small
gauge needles.....(to continoue reading this article just visit LINK
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