Blood and Lymphatic Disorders
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Blood and Lymphatic Disorders - Leaderboard
Blood and Lymphatic Disorders - Details
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Thrombocytopenia refers to: | A decreased number of platelets |
Define homozygous: | Having two identical genes inherited from each parent for a given hereditary characteristic |
Define erythrocytosis: | Overproduction of circulating erythrocytes |
When the WBC count is extremely low, the patient suffers from: | Leukopenia; (less than 5000 cells/mm3) |
What kind of hygiene is crucial in someone with agranulocytosis? | Meticulous and frequent oral hygiene to treat or prevent mouth and pharyngeal infection |
List the 4 common types of leukemia: | 1. Acute Lymphocytic leukemia 2. Acute myeloid leukemia 3. Chronic lymphocytic leukemia 4. Chronic myeloid leukemia |
What is the first step in the clotting mechanism? | Production of a hemostatic plug, followed by clotting |
What does the hematocrit lab value measure? | The volume percentage of red blood cells in the whole blood |
How do leukocytes (WBC's) differ from erythrocytes (RBC's)? | WBC's have nuclei, are colorless, and can live a few days to several years |
What are the 3 types of granular WBC's? | Neutrophils, Eosinophils, and Basophils |
What are the 2 types of agranular WBC's? | Leukocytes and monocytes |
What does the term phagocytosis refer to? | The process by which bacteria, cellular debris, and solid particles are destroyed and removed |
What is the most reliable indicator of the body's level of infection? | Differential WBC count |
What are mature neutrophils called? | Segs; nucleus is segmented into 2-5 lobes connected by strands |
An increased number of bands (bandemia) signifies: | Serious bacterial infection |
Excess bands in the peripheral blood stream was commonly known as: | "A shift to the left" |
Name the 2 groups of lymphocytes: | 1. T cells 2. B cells |
Which cells set up the antigen-antibody process, which protect the body? | T cells and B cells |
Which 2 reactions can occur between donor and recipient blood? | Agglutination and Hemolysis |
What occurs in agglutination? | Donor cells clump together because of the antibodies, occluding arteries. Can result in death. |
When antibodies cause RBC's of donor recipient blood to rupture and release their contents, this is known as: | Hemolysis; can lead to death |
How do Rh antigens develop? | As an immune response after transfusion or during pregnancy |
What does lymphatic fluid consist of? | Protein, water, fats, and waste |
The blood produces which 3 critical functions? | 1. Transports oxygen & nutrition to cells, and waste away from cells, & hormones from endocrine glands to tissues and cells 2. Regulates acid-base balance, regulates body temperature, controls water content of cells 3. Protects body against infection & prevents blood loss |
What happens when the amount of oxygen delivered to the tissues by RBC's decreases? | The kidney releases a hormone: renal erythropoietic (erythropoietin) |
What is erythropoiesis? | The process of RBC production |
Which lab values often test high if the patient is dehydrated? | Hemoglobin and hematocrit |
What are the normal WBC levels? | 5,000 to 10,000/mm of blood |
What are the two broad categories of WBC? | Granual and agranular |
List the 3 types of granular WBC's: | Neutrophils, Eosinophils, Basophils |
List the agranular WBC's: | Lymphocytes and Monocytes |
What are the smallest cells in the blood? | Thrombocytes (platelets) |
Which 3 actions take place in hemostasis? | 1. Vessel spasm 2. Platelet plug formation 3. Clot formation |
3 basic functions of the Lymphatic system: | 1. Maintenance of fluid balance 2. Production of lymphocytes 3. Absorption and transportation of lipids from the intestine to the bloodstream |
Which 2 infections are associated with Non-Hodgkin's Lymphoma? | Epstein-Barr and human T cell leukemia/lymphoma |
People in farming communities have a higher chance of developing: | Non-Hodgkin's Lymphoma; due to pesticide exposure |
What type of cell is found in Hodgkin's Lymphoma? | Reed-Sternberg |
What is the main diagnostic feature of Hodgkin's Lymphoma? | Reed-Sternberg cells in lymph node biopsy specimens |
Which organs are mainly affected in Hodgkin's Lymphoma? | Lungs, Spleen, and Liver |
What usually causes Lymphangitis? | Acute streprococcal or staphylcoccal infection in an extremity |
Describe the appearance of the skin in Lymphangitis? | Fine red streaks in the infected area; groin or axilla |
Which drugs are prescribed to a patient with Lymphangitis? | Antimicrobial and antiinflammatory |
Multiple Myeloma commonly occurs in ages: | Older than 40, with peak incidence around 65 |
Multiple Myeloma can go undetected, with the patient experiencing: | Frequent recurrent bacterial infections |
An older patient complaining of back pain and has an elevated level of total serum protein should be evaluated for what? | Multiple Myeloma |
What is a malignant neoplastic disease of the bone marrow? | Multiple Myeloma |
Which disease is a result of the overstimulation of clotting and anticlotting in response to disease or injury? | Disseminated Intravascular Coagulation (DIC) |
One of the more common causes of Disseminated Intravascular Coagulation (DIC) is: | Abruptio planentae (premature separation of placenta from the uterus) |
Define von Willenbrand's Disease | Inherited bleeding disorder characterized by abnormally slow coagulation of blood and spontaneous episodes of GI bleeding, epistaxis, gingival bleeding |
Which protein is critical for platelet adhesion? | Von Willenbrand factor (vWF) |
Hemophilia B is also known as: | Christmas Disease |
What is hemophilia? | A hereditary coagulation disorder characterized by the absence of certain blood clotting factors |
What is hemarthrosis? | Bleeding into a joint space |
What is the abnormal lab value in hemophilia? | Prolonged partial thromboplastin time |
What is the most common type of thrombocytopenia? | Thrombocytopenic purpura; can be drug-induced or immune-mediated |
What is a potentially fatal condition of blood characterized by a severe reduction in the number of granulocytes? | Agranulocytosis |
What is the PRIMARY cause of agranulocytosis? | Adverse medication reaction or toxicity |
What is the normal neutrophil value? | 3,000-7,000/mm3 |
What is hyerplasia? | Overgrowth |
Polycythemia vera is commonly diagnosed at which age? | Average age of 60 |
Hypoxemia stimulates the production of: | Erythropoietin in the kidneys, which in turn stimulates erythrocyte production in bone marrow |
Polycythemia vera increases the risk of blood clots in: | The deep veins of the arms, legs, lungs, heart, and brain |
How is blood viscosity decreased? | Phlebotomy; the removal of 500-2000mL of blood until HCT level is maintained at 45%-48% |
How might secondary polycythemia be prevented? | By maintaining adequate oxygenation |
How often may phlebotomy be needed in a patient with polycythemia? | Every 2-3 months; removing 500mL at a time |
What is the most common genetic disorder in the United States? | Sickle Cell Anemia |
What is a sickle cell? | An abnormal, crescent-shaped RBC containing Hgb S (defective Hgb molecule) |
Who does sickle cell anemia predominately affect? | African or Eastern Mediterranean heritage |
What is iron deficiency anemia? | A condition in which RBC contain less Hgb than normal |
What can occur when the body's demand for iron exceeds its absorption? | Iron deficiency anemia |
How much iron ingested is absorbed in the duodenum? | 1mg of every 10 to 20 mg (5%-10%) |
What occurs when the bone marrow does not produce enough RBC's for the body to function properly? | Aplastic anemia |
How many people does aplastic anemia affect? | 4 of every 1 million people |
What will a CBC look like in a person with aplastic anemia? | All values will be low |
Why should blood transfusions be avoided in a person with aplastic anemia? | To prevent iron overloading and the development of antibodies to tissue antigens |
What results from the body's inability to absorb vitamin B12? | Pernicious anemia |
What is needed to absorb vitamin B12 in the small intestine? | Intrinsic factor |
What is the appearance of the tongue in a person with pernicious anemia? | Smooth, thick, red |
What does an RBC (erythrocyte) look like? | A biconcave disk with no nucleus |