ATI LPN
Study Guide for Fundamentals of Nursing Care: Concepts, Connections & Skills
Chapter 34 : Phlebotomy and Blood Specimens Questions
Question 1 of 5
You are preparing to draw the blood specimen and know that you must protect yourself against bloodborne pathogens. How will you accomplish this?
Correct Answer: C,D
Rationale: Washing hands and wearing gloves are key measures to protect against bloodborne pathogens, following standard precautions for phlebotomy.
Question 2 of 5
What color tubes will you need for these tests?
Correct Answer: D,E,F
Rationale: Blood cultures use yellow tubes, complete blood count uses lavender, electrolytes use green, and glucose uses gray (though red is sometimes used for chemistry tests, green is standard for electrolytes).
Question 3 of 5
In what sequence will you draw the colored tubes?
Correct Answer: A,B,C,D
Rationale: The order of draw is yellow (blood cultures) first to prevent contamination, followed by lavender (CB
C), green (electrolytes), and gray (glucose) to minimize additive carryover.
Question 4 of 5
When performing dermal punctures, what sites are commonly used in an infant, older child, and adult?
Correct Answer: A
Rationale: The heel is used for infants due to safety and accessibility, while fingers are used for older children and adults for dermal punctures.
Question 5 of 5
You are performing phlebotomy on an elderly patient using a needle and syringe setup. Besides hemolysis, what can happen if you pull the plunger back too rapidly?
Correct Answer: A
Rationale: Pulling the plunger back too rapidly can create excessive negative pressure, causing the vein to collapse, especially in elderly patients with fragile veins.