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Intramuscular injection, often abbreviated IM, is the injection of a substance into a muscle. In medicine , it is one of several methods for parenteral administration of medications. Intramuscular injection may be preferred because muscles have larger and more numerous blood vessels than subcutaneous tissue, leading to faster absorption than ...
The gauge of the needle used can range from 25 gauge to 27 gauge, while the length can vary between 1 ⁄ 2-inch to 5 ⁄ 8-inch for injections using a syringe and needle. [ 3 ] : 722 For subcutaneous injections delivered using devices such as injector pens , the needle used may be as thin as 34 gauge (commonly 30–32 gauge), and as short as 3 ...
Today, pen needles are manufactured at shorter needle lengths than required for typical vial and syringe administration, which decreases the pain associated with injection. [2] They are available in multiple lengths and gauge of needle , including 3.5mm, 4mm, 5mm, and 8mm lengths, and 31 through 34 gauge. [ 8 ]
While the standard needle size for vaccination is 1 inch, it's recommended that women over 200 lbs. and men over 260 lbs. get shots with 1.5-inch needles. (Getty Images) (Nicolae Toma / 500px via ...
An injection of Auvi-Q autoinjector. Another design has a shape and size of a smartphone which can be put into a pocket. This design also has a retractable needle and automated voice instructions to assist the users on how to correctly use the autoinjector. The "Auvi-Q" epinephrine autoinjector uses this design. [8]
Ported cannulae have an injection port on the top that is often used to administer medicine. [32]: 349–354 The thickness and size of needles and catheters can be given in Birmingham gauge or French gauge. A Birmingham gauge of 14 is a very large cannula (used in resuscitation settings) and 24-26 is the smallest.
6. Needle exits through a protective barrier when this is pressed against the skin. The devices contain a fixed dose of epinephrine and a spring-loaded needle (or, in the case of AuviQ, a CO 2-driven needle) that exits the tip or edge of the device and penetrates the recipient's skin, to deliver the medication via intramuscular injection. [2]
Most intradermic needles require a change in injection technique or instruction to use, for example a perpendicular intradermal injection. [4] Immune reaction tests sometimes use a set of non-hollow needles for scarification, shallowly abrading the skin. The inoculation is limited to the dermis.