part 3 Flashcards
1
Q
What triggers platelet aggregation?
A
injury
2
Q
Measurement of the gas carrying capacity of RBC
A
Hgb hemoglobin
3
Q
indirect measurement of RBC number and volume
A
Hct hematocrit
4
Q
What is the indication for WBC count?
A
evaluation of the pt with infection, neoplasm, allergy, or immunosuppression
5
Q
evaluates the adequacy of the extrinsic system and common pathway in the clotting mechanism
A
PT and INR
6
Q
How do you monitor warfarin therapy?
A
PT and INR
7
Q
How do you monitor heparin therapy?
A
aPTT: this assesses the intrinsic system and the common path
8
Q
- deficiency in:
- number of erythrocytes (RBCs)
- quality of hemoglobin
- volume of packed RBCs (hematocrit)
A
anemia
9
Q
What causes anemia?
A
- decreased RBC production
- blood loss
- increased RBC destruction
10
Q
What is the function of RBCs?
A
- carries O2 from lungs to tissues
- carries carbon dioxide from tissues back to lungs
11
Q
How is anemia diagnosed?
A
- CBC
- reticulocyte count (immature RBCs)
- peripheral blood smear
12
Q
What are some types of acute blood loss?
A
- trauma
- blood vessel rupture
- spenic equestrian crisis
13
Q
What are some types of chronic blood loss?
A
- gastritis
- menstrual flow
- hemorrhoids
