infusion (redirected from constant-rate infusion)

infusion /in·fu·sion/ (in-fu´zhun)

1. the steeping of a substance in water to obtain its soluble principles.

2. the product obtained by this process.

3. the therapeutic introduction of fluid other than blood into a vein.

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in·fu·sion (n-fyzhn)

n.

1. The process of steeping a substance in water to extract its soluble principles.

2. A medicinal preparation from such a process.

3. Introduction of a solution into the body through a vein for therapeutic purposes.

4. The solution introduced in such a manner.

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Infusion

Introduction of a substance directly into a vein or tissue by gravity flow.

Mentioned in: Transfusion

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infusion

[infyo̅o̅′zhən]

Etymology: L, in, within, fundere, to pour

1 the introduction of a substance, such as a fluid, electrolyte, nutrient, or drug, directly into a vein or interstitially by means of gravity flow. Sterile techniques are maintained, the equipment is periodically checked for mechanical difficulties, and the patient is observed for swelling at the site of injection and for cardiac or respiratory difficulties. Compare injection, instillation, insufflate.

2 the substance introduced into the body by infusion.

3 the steeping of a substance, such as an herb, to extract its medicinal properties.

4 a liquid preparation made by pouring water over plant parts (such as dried or fresh leaves, flowers, fruits) and allowing the mixture to steep. Boiling water is usually used, but cold water may also be used. Making a cup of herbal tea is an example. infuse, v.

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infusion,

n a method of medicine preparation in which aromatic herbs are steeped in hot (slightly below boiling) water. This prevents medicinal constituents from being boiled off.

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infusion (infū´zhn),

n 1. the therapeutic introduction of a fluid, such as saline solution, into a vein. In contrast to injection, infusion suggests the introduction of a larger volume of a less concentrated solution over a more protracted period.
2. a term used in pharmacy for a liquid extract prepared by steeping a plant substance in water.

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infusion

1. the steeping of a substance in water to obtain its soluble principles.

2. the product obtained by this process, usually leaves, young stems, or petals to produce a tea for oral administration. See also decoction.

3. the slow therapeutic introduction of fluid other than blood into a vein. See also intravenous infusion.

note: An infusion flows in by gravity, an injection is forced in by a syringe, an instillation is dropped in, an insufflation is blown in, and an infection slips in unnoticed.

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constant-rate infusion

the continuous intravenous administration of medication usually through an electronic delivery device, in order to maintain constant blood levels. Most suitable for use with rapid onset of action and short half-life.

intramammary infusion

material used to introduce medicaments, especially antibiotics, into the teat and udder sinuses for the treatment or prevention of mastitis. May be in liquid or thin paste form and usually prepackaged in tubes for the treatment of individual quarters. Contain antibiotics and adjuvants in a slow or fast-release base depending on objective, e.g. dry period or lactation period treatment. May contain dye to warn that milk may contain antibiotics. Specially prepared watery infusions of escharotic agents, e.g. silver nitrate, copper sulfate, may be used to dry off permanently a quarter that is chronically affected.

intrauterine infusion

administration of fluids for irrigative purposes.

subcutaneous infusion

administration of fluids directly into subcutaneous tissues for the purpose of providing hydration. See also hypodermoclysis.

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infusion

Mainstream medicine The administration of IV fluids. Parenteral nutrition. Cf Bolus Therapeutics IV infusion The introduction of a fluid, including medications, into the circulation. See Autoinfusion, Continuous infusion, Hepatic arterial infusion, Intracarotid infusion, Intrahepatic infusion, Intraosseous infusion, Intraperitoneal infusion, Intraventricular infusion.