Final answer:
IV stands for intravenous, the direct administration of substances into the bloodstream, commonly used to treat dehydration with solutions like saline or lactated Ringer's.
Step-by-step explanation:
“IV” stands for intravenous, which refers to the administration of substances directly into a vein. This method is typically used in healthcare settings for delivering drugs or fluids directly into the bloodstream. It is favored when a drug is not absorbed well in the gastrointestinal (GI) tract, or when a quick and efficient delivery method is needed to achieve high plasma levels of a medication.
When a human patient is dehydrated and requires fluid replacement, an IV infusion of solutions like saline, lactated Ringer's, or dextrose is commonly given. These fluids help to restore the necessary balance of electrolytes and hydration levels in the body.