Chapter 13 Part II: Blood Flashcards
Diseases of Red Blood Cells: Anemia
A deficiency in erythrocytes or hemoglobin.
Other types of anemia:
- Aplastic anemia
- Hemolytic anemia
- Pernicious anemia
- Sickle cell anemia
- Thalassemia
Types of Anemia: Aplastic anemia
Failure of blood cell production due to aplasia or absence of cell formation of bone marrow cells.
Types of Anemia: Hemolytic anemia
Reduction in red cells due to excessive destruction.
Types of Anemia: Pernicious (megaloblastic) anemia
Lack of mature erythrocytes caused by inability to absorb vitamin B12 into the bloodstream.
(Large, immature megaloblasts)
Pathology: An/emia
Deficiency in RBC or hemoglobin.
- Iron deficiency is most common.
- Microcytic RBC, increased hypochromic center of RBC.
Pathology: Aplastic anemia (-plasia means development or formation)
Failure of blood cells to develop in bone marrow, usually idiopathic.
- Pancytopenia: stem cells fail to produce all cells (RBC, WBC, platelets).
- Blood transfusion to prolong life.
- Bone marrow transplant???
Types of Anemia: Sickle cell
Hereditary disorder of abnormal hemoglobin producing sickle shape erythrocytes and hemolysis.
(Crescent-shaped, distorted, fragile cells)
Types of Anemia: Thalassemia (target cells)
An inherited defect in the ability to produce hemoglobin, leading to hypochromia.
(Hemoglobin concentration is low)
Types of Anemia: Hemochromatosis
Excess iron deposits throughout the body.
Types of Anemia: Polycythemia vera
General increase in red blood cells.
Sickle Cell Anemia
Hereditary (abnormal hemoglobin S): crescent or sickle shape of RBC with hemolysis as cells are fragile and cannot pass through capillaries.
Signs and Symptoms: arthralgia, abdominal pain, ulceration of extremities.
Prevalent in African descent.
Types of Anemia: Hereditary Spherocytosis
(Red cells are less biconcave and fragile)
Normal Red Blood Cells
(Biconcave shape)
Sickle Cell Disease: Vaso-occlusive crisis (thrombotic)
Crisis because blood vessel is starting to become obstructed, increasing the risk of thrombotic lesions.
Disorders of Blood Clotting: Hemophilia
Excessive bleeding caused by the lack of one of the protein substances necessary for blood clotting; patients often bleed into weight-bearing joints, especially the ankles and knees.
Disorders of Blood Clotting: Purpura
Multiple pinpoint hemorrhages and accumulation of blood under the skin.
Diseases of White Blood Cells: Leukemia
An increase in cancerous white blood cells.
- Acute myelogenous leukemia (AML)
- Acute lymphocytic leukemia (ALL)
- Chronic myelogenous leukemia (CML)
- Chronic lvmphocytic leukemia (CLL)
Diseases of WBC: Leukemia
Increased cancerous WBC (leukocytes).
- Acute: immature leukocytes.
- Chronic: mature leukocytes.
- Malignant WBC’s fill the bone marrow and blood stream.
- Treat with chemotherapy (anti-cancer meds, radiation, bone marrow transplant,,,).
Diseases of WBC: Remission
Disappearance of signs/symptoms of disease.
Diseases of WBC: Relapse
Reappearance of signs and symptoms.
Leukemia
Proliferation & release of abnormal (premature) blood cell precursors.
Diseases of White Blood Cells: Granulocytosis
Abnormal increase in granulocytes in the blood.
Diseases of White Blood Cells: Mononucleosis
An infections disease marked by increased numbers of mononuclear leukocytes and enlarged cervical lymph nodes.
Disease of Bone Marrow Cells: Multiple myeloma
Malignant neoplasm of bone marrow. Malignant cells destroy bone tissue and cause overproduction of immunoglobulins.
Disease of Bone Marrow Cells: Multiple myeloma
Malignant neoplasm of bone marrow.
- Destroys bone tissue (osteolysis):
- Hypercalcemia
- Anemia
- Frequent infection
- Autologous bone marrow transplantation may lead to remission and possible cure.
Disease of Bone Marrow Cells: Multiple Myeloma
- Protein electrophoresis: separating plasma proteins according to the size, albumin spikes and gamma immunoglobulins spike.
- Bone lesion
Clinical Procedures: Apheresis
Separation of blood into component parts and removal of a select part from the blood.
Clinical Procedures: Blood transfusion
Whole blood or cells taken from a donor and infused into a patient.
Clinical Procedures: Bone marrow biopsy
Microscopic examination of a core of bone marrow removed with a needle.
Clinical Procedures: Hematopoietic stem cell transplant
Peripheral stem cells from a compatible donor administered into a recipient’s vein.
Laboratory Tests: Bleeding time
Time required to stop bleeding time from a tiny puncture wound.
- Normally takes 8 mins or less
Laboratory Tests: Coagulation time
Time required for venous blood to clot in a test tube.
- Normally takes less than 15 mins or less
Laboratory Tests: Complete blood count (CBC)
Blood panel showing the numbers of blood cells, Hg, concentration, hematocrit (% of RBC),,,.
Additional Laboratory Tests
• Hematocrit (Hct): % of RBC in a given blood volume.
• RBC count
• WBC count
• RBC morphology
• WBC differential (count)
Bone Marrow Transplant Steps:
- Stem cells from the donor’s circulating blood are collected in a transfer bag or marrow cells are aspirated from the donor’s hip bone (ilium).
- Stem cells or marrow cells are mixed with an anticlotting agent and strained to remove bits of bone and fat.
- Stem cells or marrow cells are given intravenously via a catheter implanted in the upper chest and leading to a central vein.
Bone Marrow Transplant: Hematopoietic stem cell and bone marrow transplantation: Allogeneic transplantation
(All/o means other, different) transplantation, in which a relative or unrelated person having a close or identical HLA (human leukocyte antigen) type is the donor. It carries a high rate of morbidity (disease) and mortality (death) because of complications of incompatibility such as GVHD (graft versus host disease).
Bone Marrow Transplant: Hematopoietic stem cell and bone marrow transplantation: Autologous transplantation
Stem cells or bone marrow cells are removed from the patient during a remission phase and given back to the patient after intensive chemotherapy (drug treatment).
Ab
Antibody
ABO
Four main blood types - A, B, AB, and O
BMT
Bone marrow transplantation
CBC
Complete blood count
EPO
Erythropoietin
ESR
Erythrocyte sedimentation rate
Hct
Hematocrit
Hgb, HGB
Hemoglobin
IgA, IgD, IgE, IgG, IgM
Immunoglobulins
RBC
Red blood cell; red blood cell count
WBC
White blood cell; white blood cell count