Question 1

Which of the following is the most appropriate initial step when preparing for a venipuncture procedure?

Accepted Answer

Perform hand hygiene and review laboratory test orders.

Question 2

A patient presents with a known latex allergy. Which supplies should be used during venipuncture?

Accepted Answer

Nitrile or polyethylene gloves and nonlatex tourniquet.

Question 3

What is the recommended maximum time for applying a tourniquet during venipuncture?

Accepted Answer

$$1$$ minute

Question 4

Which vein is considered the first choice for venipuncture in the antecubital area?

Accepted Answer

Median cubital vein

Question 5

When should hand hygiene be performed during the venipuncture process?

Accepted Answer

Before and after each patient contact, and after removing gloves.

Question 6

Which of the following is NOT an acceptable method for decontaminating the skin prior to routine blood collection?

Accepted Answer

Alcohol-based hand rub

Question 7

What is the correct 'order of draw' for blood collection tubes?

Accepted Answer

Blood culture tube, Coagulation tube, Serum tube, Heparin tube, EDTA tube, Glycolytic inhibition tube

Question 8

A patient faints during venipuncture. What is the most appropriate immediate response?

Accepted Answer

Stop the procedure, ensure patient safety, and notify a nurse or supervisor.

Question 9

Why should tubes with additives be gently inverted after blood collection?

Accepted Answer

To ensure proper mixing of blood and additives for accurate test results.

Question 10

Which of the following is a reason for specimen rejection?

Accepted Answer

Hemolyzed sample or inadequate volume in additive tube.

Question 11

A STAT blood specimen is requested. What does this indicate?

Accepted Answer

The specimen must be drawn, delivered, and analyzed immediately due to a medical emergency.

Question 12

Which of the following actions helps prevent needlestick injuries?

Accepted Answer

Promptly disposing of used needles in a puncture-proof sharps container.

Question 13

Which site should NOT be used for venipuncture?

Accepted Answer

Arm with a cast or severe edema.

Question 14

What is the rationale for performing hand hygiene and gloving before venipuncture?

Accepted Answer

To protect both patient and health care worker from exposure to infectious substances.

Question 15

Which of the following is a critical step in patient identification before blood collection?

Accepted Answer

Use at least two patient identifiers, such as name and date of birth.

Question 16

Why is it important to avoid prolonged tourniquet application during venipuncture?

Accepted Answer

It can cause hemoconcentration and hemolysis, affecting test results.

Question 17

Which of the following is a recommended strategy for making difficult veins more prominent?

Accepted Answer

Warm the puncture site and position the arm downward.

Question 18

What is the main reason for using the winged infusion (butterfly) method?

Accepted Answer

To access small or fragile veins, especially in pediatric or geriatric patients.

Question 19

Which of the following is a correct practice when labeling blood specimens?

Accepted Answer

Label tubes immediately at the patient's bedside after collection.

Question 20

A blood specimen for fasting glucose is collected from a patient who ate breakfast an hour ago. What should be done?

Accepted Answer

Document that the patient was not fasting and consult the physician.

Venipuncture Procedures: Principles and Best Practices

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