This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: A patient sample comes off an automated cell counter with a failure of the red cell rule of three. ... (Read 58 times)

Kthamas

  • Hero Member
  • *****
  • Posts: 546
on: Jun 25, 2018
A patient sample comes off an automated cell counter with a failure of the red cell rule of three. The red count is lower than expected given the hemoglobin.
 
  The MCV, MCH, and MCHC are elevated. Which of the following is the most likely reason for this failure?
 
  a. Megaloblastic anemia
  b. Lyse-resistant red cells
  c. Cold agglutinin
  d. Lipemia

Question 2

Which of the following occurs if testing is not performed with 24 hours from specimen collection?
 
  a. White blood count rises
  b. WBCs deteriorate and RBCs swell
  c. Hemoglobin rises
  d. MCV decreases


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

dlook33

  • Sr. Member
  • ****
  • Posts: 344
Reply #1 on: Jun 25, 2018
Answer to Question 1

ANS: C
The red count is lower than expected for the data; this suggests a cold agglutinin is present. The red cells are thus clumped at room temperature, and the clumps are being counted as one large cell. This lowers the red count and raises the MCV and MCHC. The only red cell parameter that is probably valid is the hemoglobin measurement.

Answer to Question 2

ANS: B
Sample age can have a profound effect on blood cell analysis. Specific problems with older samples include WBC fragility and loss, swelling (which increases the MCV) and possible lysis of RBCs, and the deterioration of platelets.


Kthamas

  • Hero Member
  • *****
  • Posts: 546
Reply #2 on: Jun 25, 2018
Correct answers!


dlook33

  • Sr. Member
  • ****
  • Posts: 344
Reply #3 on: Jun 25, 2018
Great! Please up vote :D


« previous next »
 

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

Children with strabismus (crossed eyes) can be treated. They are not able to outgrow this condition on their own, but with help, it can be more easily corrected at a younger age. It is important for infants to have eye examinations as early as possible in their development and then another at age 2 years.

Did you know?

Bacteria have flourished on the earth for over three billion years. They were the first life forms on the planet.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Many medications that are used to treat infertility are injected subcutaneously. This is easy to do using the anterior abdomen as the site of injection but avoiding the area directly around the belly button.

Cell Cell
Patient Teaching Patient Teaching
Patient teaching: abdominal assessment Patient teaching: abdominal assessment
Edmund Clark. Camp Five, Detainee's Cell, from the series Guantanamo: If the Light Goes Out, ... Edmund Clark. Camp Five, Detainee's Cell, from the series Guantanamo: If the Light Goes Out, ...
IgE binding to a mast cell. IgE binding to a mast cell.
Brush border cell Brush border cell
Video: Coronary Heart Disease

For a complete list of videos, visit our video library