Continuous infusion refers to a method of administering medication or fluids into a patient's body in a continuous and steady manner, as opposed to giving a one-time dose. This can be done through an intravenous (IV) line, where the medication is slowly dripped into the bloodstream over time. The rate of infusion can be adjusted depending on the needs of the patient and the type of medication being administered. Continuous infusions are commonly used in hospitals for patients who require regular doses of medications or fluids to maintain their health, such as those with chronic illnesses or injuries.