Author Question: The cellularity of the marrow is best examined in a ________, and it is determined by the red bone ... (Read 26 times)

Marty · **on:** Jun 25, 2018

The cellularity of the marrow is best examined in a ________, and it is determined by the red bone marrow's relationship to _________.

a. BM aspirate; patient age
b. BM aspirate; hematogones
c. BM biopsy; yellow marrow
d. BM biopsy; stromal cells

Question 2

A patient has difficult veins, and a winged infusion set is used to collect the blood from a small vein in the patient's hand. After successfully filling all the SST tubes, the phlebotomist proceeds to fill the light blue-top tube but is unsuccessful.

She changes tubes, thinking that it might be a tube with a lost vacuum, but there is still no blood flow. She inspects the entry site and notices some bruising around it that was not present before. Discuss possibilities of the unsuccessful draw, and explain how to correct them.

What will be an ideal response?

yotaSR5 · **Reply #1 on:** Jun 25, 2018

Answer to Question 1

Correct Answer: C

Answer to Question 2

Answer: A lost vacuum is the most common reason for unsuccessful blood flow in the Vacutainer tube. Replacing the dysfunctional tube with another tube corrects the problem, but this has already ruled out.
Not being far enough into the vein or going through the vein into the surrounding tissue will cause an absent flow into the Vacutainer tube. This is probably not the case here because there was successful blood flow in the initial tubes collected.
The best-case scenario is a collapsed vein., which causes a cessation of blood flow after initial successful blood collection.