blood disorders and hematstasis. anemia what is it?
TRANSCRIPT
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Blood disorders and Hematstasis
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Anemia what is it?
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Anemia Decrease in oxygen carrying
ability
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3 Causes:
1.
2.
3.
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Examples of causes
1. Low RBC: bleeding, RBC’s are destroyed (bacterial infection)
2. Low hemoglobin: low iron in diet; slow, prolonged bleeding
3. Abnormal hemoglobin: sickle cell anemia
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Symptoms:
1.
2.
3.
4.
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Symptoms:
1. Fatigue
2. Tachycardia
3. Feeling cold
4. Dizziness or fainting
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Sickle cell anemia
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Sickle Cell: Who carries the trait?
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Sickle Cell: Who carries the trait? (don’t write)
Prevalent in African Americans: 1 in 12 carries the trait
70,000-80,000 Americans have sickle cell anemia
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Why this group?
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Malaria Range in World
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Malarial range in Africa
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How does trait work? genetics
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How does trait work: genetics (write)
If have 2 genes for SCA: have disease
If have 1 gene for SCA: ½ of RBC’s are sickle shaped,you won’t get malaria
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Symptoms of SCA
Pain Anemia
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Hemophilia
“free bleeder” Blood can’t clot Bruise easy Life threatening
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Leukemia
Too many White blood cells made They don’t work well Crowd out normal cells