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Intramuscular Route of Administration
Definition 1
Intramuscular injection is a route of drug administration via injection into muscle tissue. Aqueous or oleaginous solutions and emulsions or suspensions may be administered. Absorption rates, delay in availability of the drug to the systemic circulation, and duration of effect are perfusion-limited, depend on molecular size of the agent, volume, and osmolarity of the drug solution, fat content of the injection site, and patient physical activity. (NCI Thesaurus)
Definition 2
Administration within a muscle. (Food and Drug Administration/CDISC)
Definition 3
Forceful administration into a muscle of liquid medication, nutrient, or other fluid through a hollow needle piercing the muscle and any tissue covering it. (NLM, Medical Subject Headings)
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