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Chapter 14:BLOOD
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RBC’s surface contains anitgens (proteins)
Plasma contains antibodies which will react with antigens Antibody A (anti-A) will react with antigen A Antibody B (anti-B) will react with antigen B. When they react, agglutination or clumping occurs
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Blood Types Group A – has only the A antigen on red cells (and B antibody in the plasma) Group B – has only the B antigen on red cells (and A antibody in the plasma) Group AB – has both A and B antigens on red cells (but neither A nor B antibody in the plasma) Group O – has neither A nor B antigens on red cells (but both A and B antibody are in the plasma)
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1. What type of tissue is blood?
2. What is the most common blood type in USA? 3. If B- patient enters the hospital, what kind of blood can they receive? 4. If 1 parent is Type O and the other is Heterozygous A, what are the chances their offspring will have Type A blood? 5.see board 1. connective, O, B- and O -, 50%, A+
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A AB O Blood Type Antigen (in RBC’s) Antibody (in plasma) Receives
Donates A B A,O A, AB B, O B, AB AB Both None A, B, AB, O O O, A, B, AB
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RH Factor Can Receive Can Donate + -, + -
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In addition to the A and B antigens, there is a third antigen called the Rh factor, which can be either present (+) or absent ( – ). In general, Rh negative blood is given to Rh-negative patients, and Rh positive blood or Rh negative blood may be given to Rh positive patients. The universal red cell donor has Type O negative blood type. The universal plasma donor has Type AB blood type.
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Red Blood Cell Disorders
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Polycythemia Excess RBCs Makes blood thick Easier to clot
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ANEMIA Iron-Deficiency Anemia (most common) Lack of RBCs Symptoms?
What should be in the diet? Fatigue, pallor (paleness), fast heartbeat, weakness
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Other Types of Anemia Aplastic Anemia – bone marrow does not produce enough RBC Hemorrhagic anemia – due to extreme blood loss Pernicious anemia – B12 deficiency Sickle Cell Anemia (genetic)
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SICKLE CELL ANEMIA Genetic Disorder Abnormally shaped blood cells
Parents can be carriers (asymptomatic)
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Sickle Cell Anemiat AA = normal Aa = sickle cell trait (few symptoms) aa = sickle cell anemia
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If both parents are carriers, child has a ¼ chance of having the disease
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Complications Pain Lethargic Lifelong anemia (low red blood count) Organ failure Stroke
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White Blood Cell Disorders
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Leukemia Type of cancer
Uncontrolled/Overproduction of immature white blood cells Takes the place of RBCs Treatable with bone marrow transplants, chemotherapy, radiation
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Blood Smear of a patient with Leukemia
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Blood Smear; Leukemia
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Infectious mononucleosis
Sometimes called "mono" or "the kissing disease," is an infection usually caused by the Epstein-Barr virus (EBV). EBV is very common, and many people have been exposed to the virus at some time in childhood. An extremely HIGH WBC count is present.
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Low WBC count viruses Flu Measles Mumps
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General Blood Disorders
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Thrombus and Embolus Both are undesirable clot formation.
When blood clots it is often known as agglutination or coagulate. To prevent blood from clotting, an anticoagulate is often given. Ex: Aspirin, Heparin, Coumadin Thrombus – a stationary clot Embolus – a moving
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Blood poisoning - Septicemia
An infection enters the blood stream Can be deadly Treated with antibiotics
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Thrombocytopenia Low production of Platelets
Causing bleeding or bruising
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HEMOPHILIA This disorder causes a failure of the blood to clot.
Patients can be treated with blood transfusions that include clotting agents.
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Hemophilia is carried on the X chromosome
Females X H X H normal X H X h carrier X h X h hemophiliac Males X H Y normal X h Y hemophiliac
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Queen Victoria Carrier for Hemophilia
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Pedigree of Hemophilia
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