Question 1

Which anticoagulant is used for blood gas determinations?&#10;A) EDTA&#10;B) Heparin&#10;C) SPS&#10;D) Sodium citrate

Accepted Answer

Heparin is commonly used as an anticoagulant for blood gas determinations because it does not interfere with the measurement of pH or blood gas values. EDTA, SPS, and sodium citrate are not suitable for blood gas determinations.

Question 2

What color tube should be collected for coagulation studies?&#10;A) Green&#10;B) Lavender&#10;C) Light blue&#10;D) Red

Accepted Answer

Light blue tubes contain sodium citrate, which is used for coagulation studies.

Question 3

Which part of a needle attaches to the collecting tube or syringe?&#10;A) Bevel&#10;B) Gauge&#10;C) Hub&#10;D) Lumen

Accepted Answer

The hub is the part of the needle that attaches to the collecting tube or syringe. The bevel is the slanted tip of the needle that punctures the skin or vein, the gauge refers to the thickness of the needle, and the lumen is the hollow center of the needle where the blood or fluid flows through.

Question 4

Which anticoagulant is used for coagulation studies?&#10;A) EDTA&#10;B) Heparin&#10;C) SPS&#10;D) Sodium citrate

Accepted Answer

Sodium citrate is the anticoagulant typically used for coagulation studies, as it binds to calcium and prevents clotting by inhibiting the coagulation cascade. EDTA is an anticoagulant that is commonly used for hematological studies as it preserves the morphology of blood cells. Heparin is also an anticoagulant, but is not typically used for coagulation studies as it affects different parts of the coagulation cascade and can interfere with some coagulation tests. SPS (sodium polyanetholsulfonate) is an anticoagulant that is commonly used for blood cultures, but would not be suitable for coagulation studies.

Question 5

Which of the following tubes should be drawn first?&#10;A) Blood culture tubes&#10;B) Lavender&#10;C) Light blue&#10;D) Red

Accepted Answer

Blood culture specimens are typically the most important and require the most meticulous collection technique because they are used to identify bacteria or fungi in the bloodstream. These should be drawn first to avoid contamination by other tubes.

Question 6

The anticoagulant EDTA works by binding which substance needed for blood clotting?&#10;A) Calcium&#10;B) Iron&#10;C) Magnesium&#10;D) Potassium

Accepted Answer

EDTA works by binding calcium ions, which are required for the clotting cascade to proceed. This prevents blood from clotting, making it useful as an anticoagulant.

Question 7

What does the term multisample needle mean?&#10;A) The needle can be used more than once on different patients.&#10;B) The needle can be used more than once, as long as it is on the same patient.&#10;C) The needle has a retractable rubber sleeve that covers one end of the needle when a blood collecting tube is not attached.&#10;D) The needle can be left in place in a vein to use in future collections.

Accepted Answer

A multisample needle has a retractable rubber sleeve that covers one end of the needle when a blood collecting tube is not attached. This allows for multiple samples to be drawn without needing to remove and reinsert the needle for each tube.

Question 8

Which of the following is the most commonly used antiseptic for routine blood draws?&#10;A) Betadine&#10;B) Bleach&#10;C) Isopropyl alcohol&#10;D) Zephiran chloride

Accepted Answer

Isopropyl alcohol is the most commonly used antiseptic for routine blood draws because it is effective, fast-drying, and does not leave a residue that could interfere with the blood sample. Betadine and Zephiran chloride are also sometimes used, but they may take longer to dry and can leave a residue. Bleach is not a suitable antiseptic for use on skin.

Question 9

What color tube should be collected for a CBC?&#10;A) Green&#10;B) Lavender&#10;C) Light blue&#10;D) Red

Accepted Answer

Lavender tube is the best choice for CBC because it contains an anticoagulant called EDTA which prevents blood from clotting and preserves the integrity of the blood cells. This tube is specifically designed for hematology testing which includes CBC.

Question 10

Which of the following is the only tube that does not need to be inverted to mix after drawing?&#10;A) Green&#10;B) Lavender&#10;C) Red glass&#10;D) Red plastic

Accepted Answer

The red glass tube does not need to be inverted to mix after drawing because it contains a clot activator but no anticoagulant, allowing blood to clot naturally without mixing.

Question 11

Which of the following tubes should be drawn first?&#10;A) Green&#10;B) Lavender&#10;C) Light blue&#10;D) Red

Accepted Answer

The answer of Which of the following tubes should be...

Question 12

Which of the following tubes should be drawn first?&#10;A) Green&#10;B) Lavender&#10;C) Gray&#10;D) Red

Accepted Answer

The answer of Which of the following tubes should be...

Question 13

Which of the following is the most common size of butterfly needle?&#10;A) 16 gauge&#10;B) 18 gauge&#10;C) 23 gauge&#10;D) 26 gauge

Accepted Answer

The answer of Which of the following is the most...

Question 14

What color vacuum tube should be drawn for trace metal analysis?&#10;A) Pink&#10;B) Red&#10;C) Royal blue&#10;D) Yellow

Accepted Answer

The answer of What color vacuum tube should be drawn...

Question 15

Which needle size is most commonly used for routine venipunctures?&#10;A) 16 gauge&#10;B) 18 gauge&#10;C) 21 gauge&#10;D) 26 gauge

Accepted Answer

The answer of Which needle size is most commonly used...

Question 16

What is the term for the hollow tube inside a needle's shaft?&#10;A) Bevel&#10;B) Gauge&#10;C) Hub&#10;D) Lumen

Accepted Answer

The answer of What is the term for the hollow...

Question 17

A tube containing thixotropic gel could be used to collect blood for which of the following tests?&#10;A) CBC&#10;B) Coagulation testing&#10;C) Chemistry screen&#10;D) Blood cultures

Accepted Answer

The answer of A tube containing thixotropic gel could be...

Question 18

Which of the following actions is the first that should be taken immediately after withdrawing the needle from the patient?&#10;A) Apply pressure to the puncture site.&#10;B) Place an adhesive bandage on the puncture site.&#10;C) Take off the tourniquet.&#10;D) Wash your hands.

Accepted Answer

The answer of Which of the following actions is the...

Question 19

What is another term for &#34;infection&#34;?&#10;A) Antiseptic&#10;B) Bacteriostatic&#10;C) Disinfectant&#10;D) Sepsis

Accepted Answer

The answer of What is another term for &#34;infection&#34;?&#10;A) Antiseptic&#10;B)...

Question 20

For maximum effectiveness, an antiseptic should be left in contact with the skin for how long?&#10;A) 5 to 15 seconds&#10;B) 15 to 30 seconds&#10;C) 30 to 60 seconds&#10;D) 2 minutes

Accepted Answer

The answer of For maximum effectiveness, an antiseptic should be...

Deck 8: Venipuncture Equipment