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RBCs
NA
43
Nursing
Undergraduate 2
09/26/2010

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Cards

Term
nupogen
Definition
drug given to boost neutrophil count
Term
How many blood cells does bone marrow produce daily?
Definition
2.5 billion RBC
2.5 billion platelets
1 billion WBC
Term
In plasma, there is a lot of what?
Definition
Proteins
Term
What does albumin do?


What does decreased albumin cause?
Definition
Increases osmotic pressure of blood (keeps fluid in vascular space)

Edema
Term
What are globulins
Definition
Main component of antibodies
Term
What does fibrinogen do?
Definition
Activates to form fibrin (important in clotting)
Term
Normal RBC level
Definition
4,200,000 - 6,100,000
Term
Life span of RBC?
Definition
120 days
Term
Where are old RBC destroyed?
Definition
Tissues, liver, spleen
Term
What is done with the iron from old RBC?
Definition
Recycled in liver to form new RBC
Term
What does the heme part of each RBC need in order to carry oxygen?
Definition
A molecule of iron
Term
What happens to RBC production when someone is hypoxic?
Definition
RBC production increases because person is not getting enough O2
Term
Erythropoiesis
Definition
maturation of RBCs
Term
In a person with chronic hypoxia or emphysema, what happens to their blood?
Definition
Too many RBCs are produced, causing thick blood. Increased risk for clots
Term
What happens to RBC count in person with end stage renal disease?
Definition
Decreased RBC count
Term
what is erythropoeitin?
Definition
A hormone released by the kidneys that stimulates the production of RBC
Term
Can a platelet plug stop bleeding
Definition
No, a platelet plug alone won't stop bleeding. A clot will stop bleeding.
Term
What is thrombopoietin?
Definition
Hormone that controls the production of platelets.
Term
Where are platelets stored?
Definition
In the spleen
Term
Life span of platelets?
Definition
1-2 weeks
Term
What is the role of the spleen in hematopoiesis
Definition
Storage container
Breaks down old Hgb
Stores platelets
Filters antigens
Term
A pt with w lacerated spleen is at risk for what?
Definition
Hemorrhage and increased risk for infection
Term
What is the role of the liver in hematopoiesis?
Definition
Produces prothrombin & blood clotting factors

Helps form vitamin K - essential for cloting

Converts bilirubin to bile

Stores excess iron

Stores large quantities of blood
Term
Pt with lacerated liver is at risk for what?
Definition
Massive blood loss - hemorrhage. Liver stores a lot of blood.
Term
What happens when platelets are activated?
Definition
They become sticky, they clump together and form platelet plug. Sctivated by injury to vessel.
Term
Examples of intrinsic factors in blood clotting
Definition
Coronary artery disease
Antigen-antibody reaction

Comes from problem inside a blood vessel
Term
Examples of extrinsic factors in clotting
Definition
Trauma to vessel

Change in the actual blood vessel
Term
What do anti-clotting factors do?
Definition
stop a clot from getting too big. They limit the clot to the area of injury
Term
Examples of anti-clotting factors
Definition
Protein C
Protein S
Antithrombin III

If these are decreased, person is at risk for developing clots, MI, stroke, PE.
Term
What do anticoagulants do?

examples?
Definition
They help prevent new blood clots.

THEY DO NOT DISSOLVE EXISTING CLOTS!!!

Heparin, Coumadin
Term
What do fibrinolytics do?
Definition
They dissolve existing clots.
"CLOT BUSTERS"
Term
What do platelet inhibitors do?

Examples?
Definition
Prevent platelets from becoming active, or prevent activated platelets from clotting.

Aspirin, Plavix
Term
What is hemophelia?

Who is at risk?
Definition
Bleeding disease.

Only men can get it.
Term
What are most common presenting symptoms for anemia?
Definition
Dyspnea on exertion
Fatigue
Term
Anemia can cause what changes in the heart?
Definition
Murmors
palpitations
Term
What is a normal ratio of hgb:hct?
Definition
1:3
Term
Normal Hgb ranges?
Normal Hct ranges?
Definition
12-18%
37-52%
Term
What does reticulocyte count measure?
Definition
Immature RBCs in blood. Released in times of need. Should be increased if pt is anemic.
Term
When giving Coumadin, what labs should be monitored?
Definition
Prothrombin time
International normalized ratio (INR)
Term
When giving heparin, what labs should be measured
Definition
Partial thromboplastin time
Term
If MCV, MCH, MCHC are increased, what should be expected?
Definition
Macrolytic anemias due to B12 & folate deficiency
Term
What bones are normal site for bone marrow biopsy?
Definition
Iliac crest of pelvis, or sternum
Term
Patient care following bone marrow biopsy?
Definition
Cover site with dressing
Observe for bleeding & infection for 24 hr
Analgesic for pain 0 no NSAIDs
Ice to site to prevent bruising.
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