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66 Cards in this Set

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decreased numbers of red blood cells or hemoglobin content caused by blood loss, deficient erythropoiesis, excessive hemolysis, or a combination of these changes.
anemia
only occurs when the insult is severe enough to disturb normal homeostatic mechanisms and exceed reserves
anemia
Where is 90% of erythopoietin formed
and other 10% is:
renal system 90%
Hepatic 10%
At what GFR level is Erythopoietin supply diminished
<49
DNA synthesis is impaired by presence of:
Chronic inflammation
such as found in:
Systemic Lupus,
Rheumatoid Arthritis, Chronic infection
REVERSABLE when inflammation treated
Iron containing oxygen transport protein found in red blood cells
hemoglobin
What do you need to make hemoglobin
iron
b vitamins
Vitamin C
protein
what are reticulocytes
young blood cells that contain some residual RNA
What % of RBC count are Reticulocytes
1-2%
-osis means
increase in
reticulocytes increase or decrease in response to anemia?
increase
-penia
too few cells
Common causes of anemia
1. blood loss (uncommon in primary care) must be 1L or more loss although chronic is far more common (erosive gastritis)
2. reduced RBC production
3. premature destruction
most likely cause of sudden dangerous drop in Hct and Hgb
hemorrhage
Reduced RBC production results from:
1. nutritional deficiency (B12, folic acid, iron)
2. anemia of chronic disease
3. Bone marrow suppression
anemia from Hemolysis is
shortened RBC lifespan <90 days
what is normal hemoglobin to hematocrit ratio
1:3
which? hemoglobin or hematocrit may be effected by dehydration
hematocrit
MCV (mean corpuscle volume)
red blood cell volume
microcytic
MCV <80 small
Normocytic
MCV 80-96 (normal)
Macrocytic
MCV >96 (abnormally large
Red blood cell hemoglobin content
MCH - mean cell hemoglobin
MCHC - mean cell hemoglobin concentration
Source of the RBC's color
hemoglobin
(chromic)
Hemoglobin comprises what % of RBC volume
90%
Normochromic
normal color
MCHC 31-37
Hypochromic
pale color
MCHC <31
RDW
RBC distribution width
What is an abnormal value for RDW
greater than 15%
What is one of the earliest laboratory indicators of an evolving microcytic or macrocytic anemia?
Abnormal RDW
What is the normal RDW?
11.5-15%
What is the normal reticulocyte percentage?
1-2%
Normal response to anemia is for reticulocytes to increase by ?? %
>2%
Most common etiology Normocytic Anemia
(2)
Acute blood loss
Anemia of chronic disease (most common in primary care)
MCV of 80-96
normocytic anemia
What is it:
Hgb - 10.1 Hct 32%
RBC 3.2 million MCV 82
MCHC 34.8
RDW 12.1%
Normocytic Anemia
MCV <80
Microcytic
Most common etiology of microcytic, hypochroic anemia with elevated RDW
Iron Deficiency anemia
Small RBC are always:
PALE
What is it:
Hgb 10.1 Hct 32%
RBC 3.2 million MCV 72
MCHC 26.8
RDW 18.1%
Microcytic
hypochromic

IRON DEFICIENCY ANEMIA
What etiology presents with anemia that is microcytic hypo chromic with normal RDW
Alpha and beta Thal minor
What ethnic group is at risk for alpha thalassemia
Asian
African
A, A, A
What ethnic group is at risk for Beta thalassemia
African
Mediterranean
Middle Eastern
B, A, M, ME
What is it:
Hgb 11.6 Hct 36.7%
RBC 6.38 mil MCV 69.6
MCH 22 RDW 13.8%
Beta Thal Minor
(small pale cells - but lots of them)
Etiology of Macrocytic, Normochromic anemia
1. Dietary induced vit B12 deficiency (uncommon if omnivore)
2. Pernicious anemia (most common)
3. Folate deficiency anemia
What is it:
Hgb 8.2 Hct 25%
RBC 2.7 million MCV 125.5
MCH 31 RDW 18.8%
Pernicious anemia

*marked macrocytosis
Drug induced macrocytoisis without anemia caused by which meds:
carbamazepine,
zidovudine,
valproic acid,
phenytoin,
alcohol
What is it:
Taking phenytoin
Hgb 12 Hct 37%
RBC 4.2 mil MCV 105.5
MCH 31 RDW 12.8%
Drug induced macrocytoisis
Do NOT treat... Leave pt alone
Anemia treatment:
Treat underlying cause
consider multiple causes
What medication is helpful in severe anemia, particularly in the presence of advancing renal failure:
Epoetin alfa (procrit)
most common type of anemia in childhood
iron deficiency anemia
most common type of anemia in pregnancy
Iron deficiency
most common type of anemia in women during reproductive years
iron deficiency anemia
most common type of anemia in the elderly
anemia of chronic disease
Most important source of the body's iron supply
recycled iron content from aged red blood cells (85%)
You advise a person who is a vegan to supplement the diet with:
Vitamin B12
In evaluating a person with microcytic anemia, the next step in laboratory assessment includes obtaining a serum:
Ferritin
(iron deficiency status)
In providing information about the best way to take oral iron therapy to maximize the drugs absorption you advise the patient to take the medication:
on an empty stomach
A 68 /o woman presents with a 6 month hx of increasing severe peripheral numbness and oral irritation. Pale conjunctiva, 2/6 systolic murmur, beefy red tongue - What is it:
Hgb 6.2, Hct 20%, RBC 2.1 mil, MCV 132, MCHC 32.4, RDW 19%
Vitamin B12 Deficiency
(causes neurologic dysfunction)
Per each unit of blood HCt increases by how many points
3
Murmur heard in patients with severe dehydration, high fever, profound anemia, thyroid toxicosis:
hemic murmur
Iron deficiency anemia presents:
Microcytic, hypochromic, elevated RDW
Folate deficiency anemia presents:
Macrocytic, normochromic, elevated RDW
Alpha Thalassemia anemia presents with:
Microcytic, hypocromic, normal RDW
Anemia of Chronic disease presents with:
Normocytic, normochromic, reticulocytopenia
Primary care of the person with alpha thalassemia minor should include:
offering genetic counseling prior to pregnancy