CSMLS Exam 2025 – 400 Free Practice Questions to Pass the Exam

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Question: 1 / 400

Which needle gauge is the smallest in size?

22

The gauge of a needle refers to its diameter, with a higher gauge number indicating a smaller bore size. Therefore, a 22-gauge needle has a smaller internal diameter than a 20-gauge, 21-gauge, or 18-gauge needle.

In clinical practice, smaller gauge needles (like the 22-gauge) are often used for procedures that require less invasive access, such as drawing blood from smaller veins or administering medications where a finer needle is desirable. The understanding of needle gauges is crucial for selecting the appropriate needle for specific medical procedures and ensuring patient comfort, as well as effective administration of treatments.

In summary, the 22-gauge needle is the smallest in size, making it the correct choice.

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