Phlebotomy Technique Quiz

An arterial puncture is more likely to result in a hematoma than a venipuncture is because of:

• the anticoagulant in the arterial syringe

• the lack of coagulation factors

• the lack of elastic tissue in the arterial wall

• higher pressure in the arteries

Which arteries are least suitable for drawing blood gases?

• femoral

• brachial

• radial

• ulnar

Which statement is true about arterial punctures?

• Collateral circulation should be checked before drawing.

• Heparin is the anticoagulant of choice.

• The site must be held at least 5 minutes after completing the puncture.

• all of the above

A patient has a negative Allen test. What should you do?

• Perform the Allen test on the other arm.

• Perform the arterial puncture in the brachial artery.

• Perform the arterial puncture in the ulnar artery.

• Perform the arterial puncture in the radial artery.

The artery that lies on the thumb side of the wrist is the:

• radial

• ulnar

• temporal

• popliteal

If the blood is drawn too quickly from a vein, the vein will have a tendency to:

• disintegrate

• collapse

• bruise

• roll

The bevel of the needle:

• should always be facing down when inserted into the skin

• should be held at a 50-degree angle to the skin

• should always be facing up when inserted into the skin

• attaches to the syringe or the holder

Under which of the following conditions would you avoid a site for venipuncture?

• edematous arm

• arm with IV

• hematoma

• all of the above

When drawing blood samples, which of the following should be performed first?

• Clean the site.

• Identify the patient.

• Find the vein.

• Apply the tourniquet.

What is the primary source of information when labeling a patient sample in the hospital?

• nurse

• wristband and patient verification of name

• patient’s family

• name label at the foot of the bed