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Nursing Knowledge
A hypodermic needle, the type commonly used in healthcare, is made up of several key parts:
Needle gauges represent the size of the needle and are available in standard sizes, coded colors, and varying lengths. The gauge of the needle is usually printed on the needle’s packaging or the needle itself. The larger the gauge number, the smaller the needle shaft.
The color of a needle is a coding system used to easily identify the gauge, or thickness, of the needle. This color coding varies by manufacturer, so make sure to double-check. Here are some common colors and their corresponding gauges:
The selection of a particular needle for a specific application depends on factors such as the route of administration, the volume and viscosity of medication, and the size and condition of the client. Always refer to the specific guidelines and double-check this information about needle gauge and length on the needle’s packaging (or the needle itself) before using the needle.
Thinner needles (with higher gauge numbers) are used when the medication is less viscous and the procedure is less invasive, like a subcutaneous injection. Thicker needles (with lower gauge numbers) are used for more viscous medications and more invasive procedures, like an intramuscular injection or drawing blood.
A filter needle is a type of needle with a small glass filtering device designed to remove any small particles or impurities from the substance being drawn up into the syringe. They are primarily used for:
For clients who have a fear of needles, known as trypanophobia, use these strategies:
Remember, it’s important to be patient and supportive when providing an injection to someone who is already nervous.
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