Phlebotomy Test Pediatric Blood Collection 3

Question 1

When collecting blood from a neonate, the total volume drawn should not exceed what percentage of the patient's estimated blood volume in any single episode?

Accepted Answer

3–5%

Answer

Single-episode blood draws should not exceed 3–5% of total blood volume to prevent significant hemodynamic compromise in neonates.

Question 2

A phlebotomist notices a pediatric patient's arm has an IV infusion running. Where should blood be drawn?

Accepted Answer

From the opposite arm or below the IV site in the same arm only as a last resort

Answer

Drawing from the opposite arm avoids IV fluid dilution of the specimen; if only one arm is available, draw below the IV site with the infusion stopped for 2 minutes.

Question 3

What is the primary purpose of the 'transitional hold' or 'kangaroo care' position during neonatal blood collection?

Accepted Answer

To use skin-to-skin contact for pain relief and calming during the procedure

Answer

Skin-to-skin (kangaroo care) contact between parent and neonate significantly reduces pain responses (heart rate, crying, cortisol) during blood collection procedures.

Question 4

A 6-year-old patient with a known diagnosis of hemophilia A requires a blood draw. What special consideration applies?

Accepted Answer

Use a small butterfly needle with careful technique and apply prolonged pressure afterward

Answer

Hemophilia A (factor VIII deficiency) impairs clotting; careful technique to minimize trauma and prolonged post-draw pressure are essential to prevent hematoma.

Question 5

Which vein in the antecubital fossa is considered the SAFEST for venipuncture in older children and adolescents?

Accepted Answer

Median cubital vein

Answer

The median cubital vein is the preferred site because it is large, well-anchored (doesn't roll), and located away from major nerves and arteries, making it the safest choice.

Phlebotomy Practice Test

Phlebotomy Practice Test

Phlebotomy Test Pediatric Blood Collection 3