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within a muscle; "an intramuscular injection"
in an intramuscular way; "administer the drug intramuscularly"

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/08/31 10:47:59」(JST)

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IM into the Leg

Intramuscular (also IM or im) 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 volumes. Depending on the chemical properties of the drug, the medication may either be absorbed fairly quickly or more gradually. Muscles have larger and more blood vessels than subcutaneous tissue and injections here usually have faster rates of absorption than subcutaneous injections or intradermal injections.^[1] Depending on the injection site, an administration is limited to between 2 and 5 milliliters of fluid.

Uses

Examples of medications that are sometimes administered intramuscularly are:

Haloperidol (Haldol)
Chlorpromazine (Thorazine)
Lorazepam (Ativan)
Fulvestrant (Faslodex)
Codeine
Morphine
Methotrexate
Metoclopramide
Olanzapine
Streptomycin
Diazepam
Prednisone
Penicillin
Interferon beta-1a
Sex hormones, such as testosterone, estradiol valerate, and medroxyprogesterone acetate (as Depo Provera)
Dimercaprol
Ketamine
Leuprorelin
Naloxone
Quinine, in its gluconate form
Vitamin B12, as cyanocobalamin, hydroxocobalamin or methylcobalamin
Risperidone

Childhood vaccines are often administered as IM injections.

In addition, some vaccines are administered intramuscularly:

Gardasil
Hepatitis A vaccine
Rabies vaccine
Influenza vaccines based on inactivated viruses are commonly administered intramuscularly (although there is active research being conducted as to the best route of administration).

Platelet-rich plasma injections can be administered intramuscularly.

Certain substances (e.g. ketamine) are injected intramuscularly for recreational purposes.

Injection sites

Sites that are bruised, tender, ugly, red, swollen, inflamed or scarred are avoided.^[1] Intramuscular injections are often given in the deltoid muscle of the arm, the vastus lateralis muscle of the leg, and the ventrogluteal and dorsogluteal muscles of the buttocks.

The ventrogluteal site is recommended for medications known to be irritating, viscous or oily and, along with the deltoid site, for adults. To locate the site, place the palm of you hand over the greater trochanter, with the fingers facing the patient's head. The right hand is used for the left hip and left hand is used for the right hip. Place the index finger on the anterior superior iliac spine and run the middle finger back along the iliac crest. The injection is given in the center of the traingle that is formed.^[1]

Vastus lateralis muscle

The vastus lateralis site is the recommended site for infants and, along with the deltoid site, for toddlers and children and for biologicals for young children. To locate the site, divide the front thigh into thirds vertically and horizontally and inject in the outer middle third.^[1]

Deltoid muscle

The deltoid muscle site is recommended, along with the vastus lateralis site, for toddlers and children and, along with the ventrogluteal site, for adults and for biologicals for older children and adults, Hepatitis B and Rabies vaccines. To locate the site, palpate the lower edge of the acromion process. Inject in the upside down triangle that forms with its base at the acromion process and its midpoint in line with the axilla.^[1]

References

^ ^a ^b ^c ^d ^e Taylor, C. R., Lillis, C., LeMone, P., Lynn, P. (2011) Fundamentals of nursing: The art and science of nursing care. Philadelphia: Lippincott Williams & Wilkins, page 751.

External links

Injections, Intramuscular at the US National Library of Medicine Medical Subject Headings (MeSH)
Prevention and Control of Influenza, Recommendations of ACIP

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