Exam (elaborations)
CSMLS Heme Review Questions And Answers With Verified Solutions Already Passed!!!
- Course
- Institution
CSMLS Heme Review Questions And Answers With Verified Solutions Already Passed!!!
[Show more]
Content preview
CSMLS Heme Review Questions AndAnswers With Verified Solutions Already
Passed!!!
Manual cell count calculation - ANSWER✔✔ Average # of cells counted x
dilution factor
# of squares x Area of squares (LxW mm2)x Depth (0.1mm)
Then convert mm3 to x 109/ L - divide by 1000
Manual cell count sources of error: overfilling chamber - ANSWER✔✔ - falsely
low count
- cells get pushed out of grid
- cells lost in moat
Manual cell count sources of error: angle of pipette - ANSWER✔✔ - must be
vertical
- angle will push cells out of grid
- falsely low count
Manual cell count sources of error: evaporation - ANSWER✔✔ - chamber sits too
long before count results in lost cells
- falsely low count
Manual cell count sources of error: dirty chamber - ANSWER✔✔ - falsely
elevated
- dirt counted as cells
,RBC indicies: MCV - ANSWER✔✔ HCT X 1000
RBC
RBC indices: MCH - ANSWER✔✔ HGB
RBC
RBC indices: MCHC - ANSWER✔✔ HGB
HCT
NRBC correction calculation - ANSWER✔✔ 100 x automated total WBC/L
100 + NRBCs/ 100 WBCs
- change absolute count my multiplying relative by corrected WBC count
greatly raised Hgb result on CBC - ANSWER✔✔ - check history for recent
transfusion before proceeding
decreased Hgb result on CBC - ANSWER✔✔ - check chemistry results for
suspected anemias
true hemorrhage vs bloody tap (CSF) - ANSWER✔✔ - spin down CSF
- check supernatant: if clear= traumatic tap, or very recent hemorrhage (becomes
xanthochromic after 36 hrs)
- if xanthochromic: true hemorrhage
,cytospin - ANSWER✔✔ - concentrates cells for adequate analysis (body fluids)
what can you add to specimen to prevent cell smudging in body fluid analysis -
ANSWER✔✔ - albumin
- prevents cells from being smudged or washed off
- PBF doesn't usually need addition of albumin due to proteins in whole blood
What component of the sickle reagent causes RBCs to form tactoid crystals? -
ANSWER✔✔ sodium metabisulphite
- slide test
Most common deficiency in the Embden-Mayerhof pathway - ANSWER✔✔ PK
deficiency
Cause of false (+) stomatocytosis - ANSWER✔✔ - humidity introduced to slide
- stomatocytes a result of abnormal erythrocyte hydration
Reasons for MCHC to be > 360 - ANSWER✔✔ - spherocytes
- agglutination
- lipemia
- hemolysis
- icterus
increased MCV - ANSWER✔✔ macrocytes
, decreased MCV - ANSWER✔✔ microcytes
decreased MCH, MCHC - ANSWER✔✔ - RBCs have less hgb
- increased central pallor
- hypochromasia
decreased HGB, MCH, MCHC - ANSWER✔✔ - abnormal production
- anemias
MCV normal, increased RDW - ANSWER✔✔ - dual pop
- variation in cell size
- possible recent transfusion
Under-filling the EDTA blood collection tube - ANSWER✔✔ - increased
anticoagulant
- Erroneous low blood cell counts & hematocrits
- Morphologic changes to RBCs and WBCs
- Staining alteration
- Excess EDTA can shrink red cells
Interstitial fluid from a skin puncture or the improper flushing of a catheter causes
_______________ Hct readings - ANSWER✔✔ decreased
Blood smears should be prepared within __________ hours of collection -
ANSWER✔✔ two
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller classhub. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75632 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now