Chapter 3: Needles Flashcards
How are multisample needles designed for use with the vacuum tube?
Have a sharp point at both ends.
What is the longer needle used for?
Penetrating the patient’s vein.
What is the shorter needle used for?
To pierce the rubber stopper of the vacuum tube.
Many blood collection needles have safety devices that protect the user from?
Accidental needle sticks.
What does the gauge of the needle indicates?
The bore size that is circular hollow. space inside the needle.
What are the most frequently used gauge sizes for phlebotomy?
21, 22, 23 and 1 to 1-1/2 inches in length.
The gauge must be large enough to?
Allow blood to flow through the needle without causing hemolysis.
A 21-gauge is the standard vevnipuncute needle for?
Patients with normal sized veins.
The bevel is the slanted opening at the end of?
The needle.
How does the bevel of the needle should always be?
face upward when inserted into a vein.
What allows the bevel of the needle being face upward when inserted into a vein?
The sharpest tip of the needle to pierce the skin (which causes less discomfort).
What are the common needle gauges (G) range?
From 16 to 32.
How are Gauge numbers arranged?
The highest number represents the smallest needle and the lowest number represents the largest width.
