Chapter 2: Needles Flashcards

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1
Q

A disposable needle has a color-coded hub that indicates?

A

The gauge and length.

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2
Q

The needle’s gauge is determined by?

A

The diameter of the lumen, or opening, at its beveled tip.

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3
Q

Common needle gauges (G) range from?

A

16 to 32 and their lengths vary from 3/8 to 2 inches.

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4
Q

Why are Gauge numbers arranged?

A

So that the highest number represents the smallest needle width while the lowest number represents the largest width.

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5
Q

What is an example of Gauge numbers?

A

25-gauge needle is much smaller than a 16-gauge needle.

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6
Q

Shorter needles are used to?

A

Inject something right underneath the skin, whereas longer length needles are used to inject something into the muscles.

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7
Q

Always choose a needle with?

A

Sufficient length to reach the desired tissue level.

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8
Q

A large person may require a longer needle to?

A

Reach the correct body tissue than would be required for a smaller person.

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9
Q

What is another consideration in needle-gauge selection?

A

Thickness of a liquid medication or its viscosity.

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10
Q

What does high viscosity would use?

A

A wider width needle or a needle with a low-gauge number.

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