The puncture of a vein to remove blood, instill a medication, or start an intravenous infusion is

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Venipuncture is the medical term for puncturing of a vein. It is a common procedure used to obtain blood samples for testing, initiate intravenous therapy or give medications. Vasoconstriction, on the other hand, refers to the narrowing of blood vessels, whereas extravasation refers to the leakage of fluid or medication from a blood vessel into surrounding tissues. Venogram is an imaging test that involves injecting a contrast dye into a vein to produce images of blood vessels.

The Puncture of a Vein to Remove Blood, Instill a Medication