Nokea
Which of the following needle sizes would be an appropriate choice to use for phlebotomy in a 45-year-old patient?
- A. 16 gauge
- B. 19 gauge
- C. 21 gauge
- D. 23 gauge
- E. 30 gauge
Correct Answer: C,D
Rationale: 21- and 23-gauge needles are suitable for phlebotomy in adults, balancing blood flow and patient comfort.
You may also like to solve these questions
When selecting a vein for phlebotomy, which of the following are true?
- A. Use the vein that looks the largest, no matter what its condition
- B. Avoid areas where the vein is crooked or feels hard and ropelike
- C. The site of choice is the dorsal side of the hand
- D. Use the right arm of a patient who has had a left mastectomy
- E. Use the right arm of a patient who has an IV in the right arm
Correct Answer: B,D
Rationale: Avoiding hard, crooked veins and using the non-mastectomy arm ensures safe and effective venipuncture.
When performing phlebotomy using a needle and syringe, drawing back on the plunger can result in which of the following complications?
- A. Collapse of vein
- B. Hematoma
- C. Infection of site
- D. Rolling the vein
- E. Blowing the vein
Correct Answer: A,B
Rationale: Excessive plunger pull can collapse the vein or cause a hematoma by damaging the vessel wall.
A patient has several blood tests ordered. You have gathered the correct tubes, which include a red top, green top, and light blue top. In which order will you draw them?
- A. Green, red, light blue
- B. Light blue, green, red
- C. Red, light blue, green
- D. Light blue, red, green
Correct Answer: D
Rationale: The order of draw is light blue (citrate), red (serum), green (heparin) to prevent cross-contamination.
The tourniquet should be applied where in relation to the intended puncture site?
- A. 6 inches distal to the site
- B. 3 inches distal to the site
- C. 6 inches proximal to the site
- D. 3 inches proximal to the site
Correct Answer: D
Rationale: The tourniquet is applied 3 inches proximal to the puncture site to engorge the vein for easier access.
A patient who has had venipuncture performed will need more teaching if she says:
- A. I shouldn't lift anything heavy with this arm for an hour
- B. I will take the wrap off of my arm tomorrow morning
- C. I will hear from my doctor about my test results
- D. Yes, the name on the label is my name correctly spelled
Correct Answer: B
Rationale: The wrap should be removed after 10-15 minutes, not the next day, to avoid complications like bruising.