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Why is the subcutaneous layer a desirable site for injections

Why is the subcutaneous layer used for injections?

Subcutaneous injection can be used to give many types of medications for various medical conditions. There are fewer blood vessels in the fatty layer of connective tissue just beneath the skin than the muscle tissue . Having fewer blood vessels means that medication injected subcutaneously is absorbed more slowly.

Why is the subcutaneous layer a desirable site for medication injections?

As subcutaneous tissue has few blood vessels, the injected drug is diffused very slowly at a sustained rate of absorption. Therefore, it is highly effective in administering vaccines, growth hormones, and insulin, which require continuous delivery at a low dose rate.

Where is the best place to give a subcutaneous injection?

Subcutaneous tissue is all over your body, but the most common areas for subcutaneous injections are: the upper outer area of the arm. the front and outer sides of the thighs. the abdomen, except for a 2 inch area around the navel. the upper outer area of the buttocks. the upper hip.

What layer of skin should im injections be in?

Intramuscular injections are delivered into the muscle . Intradermal injections are delivered into the dermis , or the skin layer underneath the epidermis (which is the upper skin layer). The dermis is, on most places of the human body, only a few mm thick.

Can you mess up a subcutaneous injection?

What are the risks of a subcutaneous injection ? You may get an infection, have the needle break in your skin, or hit a nerve. You may have scarring, lumps, or dimpling of the skin from a subcutaneous injection .

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How long does a subcutaneous injection take to work?

Subcutaneous means under the skin. In this type of injection , a short needle is used to inject a drug into the tissue layer between the skin and the muscle. Medication given this way is usually absorbed more slowly than if injected into a vein, sometimes over a period of 24 hours.

Do you have to pinch skin for subcutaneous injection?

Angle of injection PHE (2013) recommends that subcutaneous vaccinations are given with the needle at a 45-degree angle to the skin and the skin should be pinched together (PHE, 2013).

What happens if you give a subcutaneous injection intramuscularly?

Serious reactions to intramuscular injections are rare; in one series of 26 294 adults, of whom 46% had received at least one intramuscular injection , only 48 (0.4%) had a local adverse effect. However, subcutaneous injections can cause abscesses and granulomas.

How deep should a subcutaneous injection be?

The needle-length should be 1/2 of the depth of the skinfold. A rule of thumb is that if the skinfold depth is 2 inches, inject using a 90 degree angle; if the depth is 1 inch, inject using a 45 degree angle.

What happens if injection is not given properly?

The microbes in injection substances, injection equipment or already-existing on the skin, can enter the body causing very serious infections. Similarly, incorrect injection techniques or erroneous injection locations, can cause blood vessel breakage, muscle or nerve damage and paralysis.

What angle do you give a subcutaneous injection?

Determine the appropriate needle size and injection angle. Generally, a 25- to 27-gauge, 5/8-inch-long needle is appropriate. If you can pinch a 1-inch (2.5-cm) tissue fold, insert the needle at a 45- degree angle ; for a 2-inch (5-cm) fold, insert it at a 90- degree angle . Warm the medication as recommended.

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How do I give myself a subcutaneous injection?

Hold the syringe in your dominant (stronger) hand, as if holding a pencil, one inch above the injection site at a 90 degree angle to the skin. Quickly dart (stab) the needle through the skin into the fat tissue. 4. Use your non-dominant (weaker) hand to slowly push down on the plunger to inject the medication.

What size needle is used for subcutaneous injections?

Subcutaneous (Subcut) injections Inject at a 45-degree angle into fatty tissue overlying the triceps muscle — a 5/8″ needle , 23–25 gauge is recommended.

Do you rub im injections?

Generally, rubbing or massaging the injection site area should be avoided through the time the drug is expected to reach peak levels to avoid intended absorption patterns.

What are the 4 types of injections?

Needle insertion angles for 4 types of injection : intramuscular, subcutaneous, intravenous, and intradermal.

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