module 4

Which of the following explains why the median cubital vein is often chosen for venipuncture in the antecubital area?

It is located near the middle of the antecubital area and is well anchored.

Which of the following explains why a phlebotomist should follow the order of draw when collecting blood samples using vacuum tubes?

To prevent carryover of additives between tubes that could affect test results

Which of the following microtainer colors indicates clotting activators?

gold

Which of the following actions should be taken if a patient requests to stop the blood collection procedure?

Stop the procedure immediately, as requested by the patient.

Which of the following is the reason for stopping a venipuncture if a hematoma begins to develop?

To prevent further injury and reduce the risk of the hematoma enlarging

Which of the following explains the function of the rubber sheath and needle on the end of a venipuncture needle that is not inserted into the patient?

To allow the vacuum in the tube to pull blood through the needle

Which of the following explains why a phlebotomist should wipe away the first drop of blood during a capillary puncture?

To remove potential contaminants

After withdrawing the needle from the venipuncture site, which of the following actions should the phlebotomist take next?

Engage the safety device on the needle.

Which of the following describes why it is necessary to invert the blood collection tubes after filling them?

To mix the blood with the additives for proper preservation and accurate testing

Which of the following accommodations should the phlebotomist consider when performing venipuncture on older adult patients who have conditions such as arthritis in the hands and arms?

Providing extra padding to increase comfort

Which of the following explains why the syringe method is used instead of an evacuated tube for patients who have fragile veins that collapse easily?

To enable manual control of the vacuum force during blood collection

Which of the following is the effect of using a needle that has too small a gauge for venipuncture?

It can result in a hemolyzed sample and potentially require a repeat collection of blood.

Which of the following is the preferred site for capillary puncture in infants?

the heel

Which of the following reasons explains why a phlebotomist should have all the necessary supplies before entering a patient's area for a blood collection?

To avoid cross contamination and ensure accurate test results

Which of the following explains why a phlebotomist should avoid venipuncture in the inside of the wrist?

There is a high risk of injuring a nerve or tendon.

Which of the following explains why a winged infusion set (butterfly needle) should be used instead of a straight needle during venipuncture?

It is used for patients who have small or difficult-to-access veins.

Which of the following explains why a phlebotomist should apply a tourniquet during venipuncture?

To make the veins more prominent without completely stopping blood flow

Which of the following explains why a phlebotomist should apply pressure to the venipuncture site after needle withdrawal?

To aid in the process of hemostasis and stop the blood flow

Under which of the following circumstances should a phlebotomist use a capillary puncture over a vacuum tube?

To collect a smaller volume of blood

Which of the following explains why a phlebotomist should remove the tourniquet within 1 min during venipuncture?

To prevent hemoconcentration and potential injury to the patient