administration
Meaning of administration: Route, amount and timing all belong to administration, which is why the same drug can behave differently depending on how it reaches the body.
Definition of administration
Administration is the act of giving a treatment, usually a medication, to a patient, together with the practical details that surround it: which route is used, how much is given, and how often it is repeated. The word covers the delivery itself and the specifics recorded alongside it, since those specifics change how the treatment behaves.
What are the routes of administration?
The route is the path a treatment takes into the body, and it is named in every order alongside the drug and the amount. Routes divide broadly into enteral, meaning through the digestive tract, and parenteral, meaning by a path that bypasses it. Topical and inhaled routes sit outside both, acting on a surface or within the airway.
| Route | How the treatment is given |
|---|---|
| Oral | Swallowed, then absorbed from the stomach and intestine |
| Intravenous | Delivered straight into a vein |
| Intramuscular | Injected into a muscle and absorbed from there |
| Subcutaneous | Injected into the fatty layer beneath the skin |
| Topical | Applied to the skin or a mucous membrane |
| Inhaled | Breathed in, reaching the airways directly |
| Rectal | Placed in the rectum, an option when swallowing is not possible |
Why does the route change the effect?
Two things differ between routes: how much of the drug reaches the bloodstream, and how quickly it gets there. An intravenous dose enters the circulation complete and at once. An oral dose has to survive stomach acid, cross the gut wall and then pass through the liver, which breaks down part of it before the rest of the body sees any. That loss is called first pass metabolism, and the share that survives it is the bioavailability of the drug by that route. A drug heavily broken down in the liver may need a much larger amount by mouth than by injection to reach the same effect, and a few are destroyed so completely that no oral form exists at all. Onset follows the same logic. Inhaled and intravenous routes act within moments, intramuscular and subcutaneous over minutes, swallowed forms over a longer stretch, and a skin patch is designed to release its contents across hours or days.
What gets recorded, and why so precisely?
An administration record names the drug, its strength, the amount given, the route, the time and the person who gave it. None of those details is interchangeable. The same number of milligrams by two different routes is not the same dose in effect, and a preparation intended for one route can cause harm by another, which is why formulations are labeled for a single path. The record also makes it possible to trace an unexpected reaction back to what was given and when, and to see whether a scheduled treatment was missed, refused or delayed. In research the administration details form part of the written protocol rather than local habit, so that results gathered at different sites describe the same exposure.
Used in a sentence
The order specified the medication, dose, and route of administration for the nursing staff.
Good to know
The route of administration changes how quickly and how completely a medication is absorbed, so the same drug in the same number of milligrams can produce a different pattern of effect by mouth, by injection or by another path.