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 89 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?

The average office desk has 400 times more bacteria on it than a toilet.

Did you know?

The Romans did not use numerals to indicate fractions but instead used words to indicate parts of a whole.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

Recent studies have shown that the number of medication errors increases in relation to the number of orders that are verified per pharmacist, per work shift.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Lumbar puncture. Abbreviated LP, the lumbar puncture is a common procedure that withdraws cerebrospi Lumbar puncture. Abbreviated LP, the lumbar puncture is a common procedure that withdraws cerebrospi
Sample hypoglycemic protocol. Sample hypoglycemic protocol.
Patient Information Supplied When Scheduling Hospital Admissions Patient Information Supplied When Scheduling Hospital Admissions
Anatomy of the heart. Remember: It is labeled right and left based on the patient’s perspective. Anatomy of the heart. Remember: It is labeled right and left based on the patient’s perspective.
The humoral and cellular immune response. At the left is the humoral (or B-cell mediated); at the ... The humoral and cellular immune response. At the left is the humoral (or B-cell mediated); at the ...
Trapezoidal Rule Graph Trapezoidal Rule Graph
Video: Pressure Flow Model Animation

For a complete list of videos, visit our video library