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20 Cards in this Set
- Front
- Back
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What is a Reticulocyte and how do you view them? |
immature RBCs and with NMB staining |
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When counting retics, you view ________ number of fields with ___________ number of retics to get a total count of ________. |
10, 100, 1000 |
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What are the three types of retic counts? |
Observed, corrected and absolute |
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Describe Aggregate retics |
counted, younger, and has greater than 5 clumps of reticulum, bigger and bluer |
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What is the significance of retics? |
shows a regenerative response |
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Define observed retic count and the units used |
the number of retics per 1000 RBCs; Percentage |
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what is the significance of the corrected retic count and what are the units used? |
it takes anemia into consideration when counting by dividing the patients PCV by normal PCV and multiplying by the observed; written as a percentagev |
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What are the components of the absolute retic count formula and the units used? |
the observed retic count (before percentage) and total RBC count; units in ul |
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What are the organelles seen in a reticulocyte and that are eventually lost? |
ribosomes |
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You are more likely to see both aggregate and punctate retics in which species? |
feline |
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What is the general definition of a reticulocyte count? |
the percentage of RBCs that are reticulocytes |
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Why aren't retics showing up on this image? |
NMB stain was not used |
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Which are aggregate retics and which are punctate retics? |
Aggregate: A; Punctate: B |
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Why might you not see retics in the blood until a few days after an anemic patient is admitted? |
The blood may not start regenerating immediately and may take a few days |
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How long should the staining process take? |
The blood and NMB mix should sit for at least 15 minutes. The longer it has to sit, the better the stain uptake will be |
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In younger animals, what is a common cause of anemia? |
internal parasite infestation |
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In cases of severe blood loss anemia, how long might it take for retics to be seen in blood? |
2-4 days |
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How is bone marrow's response assessed in anemic patients? |
the concentration of retics |
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Define some causes of non-regenerative anemia |
lead consumption, immuno-compromising diseases such as FIV and FLV, bone marrow cancer |
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Why shouldn't retic counts be performed on horses? |
retics aren't typically seen in peripheral blood because retics aren't released fron the bone marrow of horses |
