Intravenous infusion, also known as IV therapy, is a medical procedure that involves injecting fluid into the vein through a catheter. In medical literature, there are several synonymous terms used for this procedure. The term parenteral infusion includes the IV infusions as well as intramuscular injections and subcutaneous injections. In nursing jargon, the term drip is commonly used to refer to IV infusions. Other terms used are intravenous drip, intravenous therapy, and IV treatment. The term venous access is used to refer to the insertion of the catheter, and the term infusion pump refers to the device used to regulate the flow of the fluid. These synonyms are interchangeably used and can be used depending on different contexts.