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What are the four complications of subcutaneous needle injection?

Nov 24, 2022 Source: Cainiu Health
Dr. Yang Shuwen
Introduction
If the wound comes into contact with water or improper disinfection measures are taken, infection may occur. After subcutaneous injection, patients may experience allergic symptoms such as skin itching and redness or swelling. If the injected fluid is not promptly absorbed by blood vessels, leakage from the injection site may occur. Subcutaneous injections may damage capillaries, leading to skin bruising. Subcutaneous injections may also stimulate the patient's autonomic nervous system.

It is incorrect to say that there are only four complications associated with subcutaneous injections. Common complications of subcutaneous injections include infection, allergic reactions, leakage, bruising, and needle fainting (vasovagal response).

1. Infection

Subcutaneous injections create a wound on the skin. If the wound comes into contact with water or if disinfection measures are inadequate, it may lead to local skin infection.

2. Allergic Reaction

Some individuals have an allergic constitution and may react allergically to the injected medication. Symptoms such as itching and redness or swelling of the skin may occur after the injection.

3. Leakage

The concentration of medication used in subcutaneous injections is relatively high. If the drug is not absorbed promptly by blood vessels, leakage from the injection site may occur.

4. Bruising

Subcutaneous injections may damage capillaries, causing blood to leak out of the vessels and accumulate under the skin, leading to bruising.

5. Needle Fainting (Vasovagal Response)

Subcutaneous injections may trigger overactivity of the patient's autonomic nervous system, resulting in symptoms such as cold sweats and pallor.

After a subcutaneous injection, it is recommended to closely monitor vital signs. If any complications arise, consult a qualified healthcare provider promptly and take appropriate management measures.

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