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An intramuscular injection is performed perpendicular to the skin, close to a 90 degree angle. Comparison of angle of intramuscular injection with other injection types An intramuscular injection can be administered in multiple different muscles of the body.
Needle insertion angles for 4 types of injection: intramuscular, subcutaneous, intravenous, and intradermal Injections are classified in multiple ways, including the type of tissue being injected into, the location in the body the injection is designed to produce effects, and the duration of the effects.
The term injection encompasses intravenous (IV), intramuscular (IM), subcutaneous (SC) and intradermal (ID) administration. [35] Parenteral administration generally acts more rapidly than topical or enteral administration, with onset of action often occurring in 15–30 seconds for IV, 10–20 minutes for IM and 15–30 minutes for SC. [36]
The traditional procedure of ID injection known as the Mantoux procedure (as used in the Mantoux test) involves injecting at angle of administration of 5 to 15 degrees angle, almost against the skin. With bevel (opening) side up, the needle is inserted about 1 ⁄ 8 inch (3 mm) with the entire bevel inside and injected while watching for a ...
A narrow, high-pressure stream of liquid is made to penetrate the outermost layer of the skin (stratum corneum) to deliver medication to targeted underlying tissues of the epidermis or dermis ("cutaneous" injection, also known as classical "intradermal" injection), fat ("subcutaneous" injection), or muscle ("intramuscular" injection).
Comparison of angle of subcutaneous injection of a needle with other injection types. Subcutaneous injections are performed by cleaning the area to be injected followed by an injection, usually at a 45-degree angle to the skin when using a syringe and needle, or at a 90-degree angle (perpendicular) if using an injector pen.
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Injector pens remove some of the complications of syringes by allowing the pen to be "pushed" against the skin at a 90-degree angle (removing the need to inject at a proper angle as is the case with syringes), as well as by replacing a long, thin plunger of a syringe with a simple button which is depressed and held to inject the dose. [2]