Intramuscular injection

Intramuscular injection

Intramuscular injection is the injection of a substance directly into a muscle. In medicine, it is one of several alternative methods for the administration of medications (see Route of administration). It is used for particular forms of medication that are administered in small amounts. Depending on the chemical properties of the drug, the medication may either be absorbed fairly quickly or more gradually. Intramuscular injections are often given in the deltoid, vastus lateralis, ventrogluteal and dorsogluteal muscles.

Complications and contraindications

When the gluteal muscles are used, injections should be made on the upper, outer quadrant of the buttock to avoid damaging the sciatic nerve. Injection fibrosis is a complication that may occur if the injections are delivered with great frequency or with improper technique.

Thrombocytopenia (low platelet counts) and coagulopathy (bleeding tendency) are contraindications for intramuscular injections, as they may lead to hematomas.

Uses

Examples of medications that are sometimes administered intramuscularly are:
* codeine
* methotrexate
* metoclopramide
* olanzapine
* Streptomycin
* diazepam
* prednisone
* Interferon beta-1a
* sex hormones, such as testosterone, estradiol valerate, and Depo Provera
* dimercaprol
* ketamine
* lupron
* naloxone
* quinine in its gluconate form

In addition, some vaccines are administered intramuscularly:

* Gardasil
* hepatitis A vaccine

Also certain substances (i.e. ketamine) are injected intramuscularly for recreational purposes.

External links

*

* [http://www.simmed.com/Demo/Default.aspx Animated Intramuscular Injection tutorial]


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  • intramuscular — Within the substance of a muscle. * * * in·tra·mus·cu·lar məs kyə lər adj situated within, occurring within, or administered by entering a muscle <intramuscular fat> <an intramuscular injection> in·tra·mus·cu·lar·ly adv * * * adj.… …   Medical dictionary

  • intramuscular — adjective Etymology: International Scientific Vocabulary Date: 1874 situated in, occurring in, or administered by entering a muscle < an intramuscular injection > • intramuscularly adverb …   New Collegiate Dictionary

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  • injection — n. 1) to administer, give an injection 2) to get an injection 3) a lethal injection 4) a hypodermic; intradermal; intramuscular; intravenous; subcutaneous injection * * * [ɪn dʒekʃ(ə)n] give an injection intradermal intramuscular intravenous… …   Combinatory dictionary

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