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Assessment and Management of Patients With Hematologic Disorders Copyright © 2008 Lippincott Williams & Wilkins. 1 Hematologic System • The blood and the blood forming sites, including the bone marrow and the reticuloendothelial system • Blood – Plasma (fluid portion of blood -55%) – Blood cells • Hematopoiesis – The body replenishes its supply of blood cells – Primary site is bone marrow Copyright © 2008 Lippincott Williams & Wilkins. 2 Blood Cells • Erythrocyte: RBC • Leukocyte: WBC – Neutrophil – Monocyte – Eosinophil – Basophil – Lymphocyte: T lymphocyte and B lymphocyte • Thrombocyte: platelet 3 Copyright © 2008 Lippincott Williams & Wilkins. Hematologic Studies • CBC • Peripheral smear • Bone marrow aspiration and biopsy 4 Copyright © 2008 Lippincott Williams & Wilkins. Blood Smear 5 Copyright © 2008 Lippincott Williams & Wilkins. Hemostasis 6 Copyright © 2008 Lippincott Williams & Wilkins. Polycythemia • Increased volume of erythrocytes (HCT >55%M/>50%F) • Primary – Proliferative disorder - bone marrow is hypercellular – Patients at increased risk for thromboses and bleeding (due to platelet dysfunction) – Managed usually via phlebotomy • Secondary – Caused by excessive prodcution of erythropoietin • May be d/t hypoxic stimulus, neoplasms (epo produced by malignancy) 7 Copyright © 2008 Lippincott Williams & Wilkins. Polycythemia • Manifestations – – – – – – Hypervolemia and hyperviscosity Ruddy complexion Hypertension Headache Dizziness, tinnitus Signs of embolization • Management – – – Phlebotomy - reduce HCT to 45% or less Hydration Avoid iron supplementation 8 Copyright © 2008 Lippincott Williams & Wilkins. Neutropenia • Absolute neutrophil count – WBC x %neutrophils – <1500/ ul (severe if <500/ul) • Predisposed to infection – Neutropenia may mask clasic signs of infection - e.g., even low grade fever may be of great significance – May progress rapidly to sepsis • Nursing and collaborative care – – – – – – Determine cause Identify offending organism Institute prophylactic or therapeutic antibiotic Administer hematopoetic growth factors Institute protective environmental measures See table 31-22 and 31-23 Copyright © 2008 Lippincott Williams & Wilkins. 9 Leukemia • Hematopoietic malignancy with unregulated proliferation of leukocytes • Affect blood and blood-forming tissues of bone marrow, lymph system, and spleen • Types (see table 31-24) – Acute myeloid leukemia – Chronic myeloid leukemia – Acute lymphocytic leukemia 10 – Chronic lymphocytic leukemia Copyright © 2008 Lippincott Williams & Wilkins. Acute Myeloid Leukemia (AML) • Defect in the stem cells that differentiate into all myeloid cells: monocytes, granulocytes, erythrocytes, and platelets • Most common leukemia in adults • Affects all ages with peak incidence at age 60 • Abrupt onset • Manifestations: fever and infection, weakness and fatigue, bleeding tendencies, pain from enlarged liver or spleen, hyperplasia of gums, and bone pain • Treatment is aggressive chemotherapy: 11 induction therapy, BMT, and PBSCT Copyright © 2008 Lippincott Williams & Wilkins. Chronic Myeloid Leukemia (CML) • Mutation in myeloid stem cell with uncontrolled proliferation of cells: excessive neoplastic granulocyts • Stages: chronic phase, blast crisis • Uncommon in people under 20; incidence increases with age; mean age is 55 to 60 years • Life expectancy is 3 to 5 years • Manifestations (initially may be asymptomatic): malaise; anorexia; weight loss; sternal pain; enlarged, tender spleen; enlarged liver • Treatment: chemotherapy, BMT, and PBSCT, radiation 12 Copyright © 2008 Lippincott Williams & Wilkins. Acute Lymphocytic Leukemia • Uncontrolled proliferation of immature cells from lymphoid stem cell • Most common in young children • Prognosis is good for children; 80% event-free after 5 years, but survival drops with increased age • Manifestations: fever, bleeding, anemia, mouth sores, symptoms of meningeal involvement and liver, spleen, and bone marrow pain • Treatment: chemotherapy, BMT or PBSCT 13 Copyright © 2008 Lippincott Williams & Wilkins. Chronic Lymphocytic Leukemia • Malignant B lymphocytes, most of which are mature, may escape apoptosis, resulting in excessive accumulation of cells • Most common form of chronic leukemia in adults • More common in older adults and affects men more often • Survival varies from 2 to 14 years depending upon stage 14 Copyright © 2008 Lippincott Williams & Wilkins. Chronic Lymphocytic Leukemia (cont.) • Manifestations: lymphadenopathy, fatigue, anorexia, hepatomegaly, splenomegaly; in later stages, anemias and thrombocytopenia;; “B symptoms” include fever, night sweats, and weight loss • Treatment: early stage may require no treatment, chemotherapy,radiation 15 Copyright © 2008 Lippincott Williams & Wilkins. Chemotherapy • Induction therapy – Nursing implications • Intensification therapy • Consolidation therapy • Maintenance therapy 16 Copyright © 2008 Lippincott Williams & Wilkins. Nursing Process—Assessment of the Patient With Leukemia • Health history • Assess for symptoms of leukemia and complications of anemia, infection, and bleeding – Weakness and fatigue – See table 31-27 • Laboratory tests – Leukocyte count, ANC, hematocrit, platelets, electrolytes, and cultures reports 17 Copyright © 2008 Lippincott Williams & Wilkins. Nursing Process—Diagnosis of the Patient With Leukemia • • • • • • • • Risk for bleeding Risk for impaired skin integrity Impaired gas exchange Impaired mucous membrane Imbalanced nutrition Acute pain Fatigue and activity intolerance Risk for infection 18 Copyright © 2008 Lippincott Williams & Wilkins. Nursing Process—Diagnosis of the Patient With Leukemia (cont.) • • • • • • • • • Risk for excess fluid volume Diarrhea Risk for deficient fluid volume Self-care deficit Anxiety Disturbed body image Potential for spiritual distress Grieving diagnoses Deficient knowledge 19 Copyright © 2008 Lippincott Williams & Wilkins. Collaborative Problems/Potential Complications • • • • Infection Bleeding Renal dysfunction Tumor lysis syndrome • Nutritional depletion • Mucositis • Depression Copyright © 2008 Lippincott Williams & Wilkins. 20 Nursing Process—Planning the Care of the Patient With Leukemia • Major goals include absence of complications, attainment and maintenance of adequate nutrition, activity tolerance, ability for self-care and to cope with the diagnosis and prognosis, positive body image, and an understanding of the disease process and its treatment 21 Copyright © 2008 Lippincott Williams & Wilkins. Interventions • Reduce risk of infection • Reduce risk of bleeding • Mucositis – Frequent, gentle oral hygiene – Soft toothbrush, or if counts are low, spongetipped applicators – Rinse only with NS, NS and baking soda, or prescribed solutions – Perineal and rectal care 22 Copyright © 2008 Lippincott Williams & Wilkins. Improving Nutrition • Provide oral care before and after meals • Administer analgesics before meals • Provide appropriate treatment of nausea • Provide small, frequent feedings with soft foods that are moderate in temperature • Provide a low-microbial diet • Provide nutritional supplements 23 Copyright © 2008 Lippincott Williams & Wilkins. Lymphoma • Neoplasm originating in the bone marrow and lymphatic structures resulting in the proliferation of lymphocytes • Hodgkin’s lymphoma • Non-Hodgkin’s lymphoma 24 Copyright © 2008 Lippincott Williams & Wilkins. Hodgkin’s Disease • Unicentric origin • Reed–Sternberg cell • Suspected viral etiology (EBV); familial pattern; incidence occurs in early 20s and again after age 50 • Excellent cure rate with treatment • Manifestations: painless lymph node enlargement; pruritus; B symptoms : fever, night sweats, and weight loss • Treatment is determined by stage of the disease 25 and may include chemotherapy and/or radiation Copyright © 2008 Lippincott Williams & Wilkins. Non-Hodgkin's Lymphoma (NHL) • Lymphoid tissues become infiltrated with malignant cells that spread unpredictably; localized disease is rare • Incidence increases with age; the average age of onset is 50 to 60 • Prognosis varies with the type of NHL • Diagnosed via lymph node biopsy and imaging • Treatment is determined by type and stage of disease and may include interferon, chemotherapy, and/or radiation therapy 26 Copyright © 2008 Lippincott Williams & Wilkins. Multiple Myeloma • Malignant disease of plasma cells in the bone marrow with destruction of bone • M protein and Bence-Jones protein • Median survival is 3 to 5 years; there is no cure • Manifestations: insidious onset; bone pain, osteoporosis, fractures, elevated serum protein hypercalcemia, renal failure, symptoms of anemia, fatigue, weakness, increased serum viscosity, and increased risk for bleeding and infection • Treatment may include chemotherapy, corticosteroids, stem cell transplant, and 27 biphosphonates Copyright © 2008 Lippincott Williams & Wilkins. Multiple Myeloma • Nursing care is relates to bone involvement and sequelae from bone breakdown – Hypercalcemia – Fractures – Pain – Infection 28 Copyright © 2008 Lippincott Williams & Wilkins. Bleeding Disorders • • • • Thrombocytopenia Idiopathic thrombocytopenia purpura (ITP) Hemophilia Acquired coagulation disorders: liver disease, anticoagulants, and vitamin K deficiency • Disseminated intravascular coagulation (DIC) • Bleeding precautions – See Nursing care plan 31-2, table 31-15 Copyright © 2008 Lippincott Williams & Wilkins. 29 Hemophilia • Inherited bleeding disorder, results in deficiency of factor VIII or IX; varying degrees of disease • Manifested by hemorrhage into various body parts • Medical management includes FFP transfusion, recombinant clotting factors, desmopressin (DDAVP) • Nursing management: control bleeding, patient education aimed at prevention of bleeding 30 Copyright © 2008 Lippincott Williams & Wilkins. Disseminated Intravascular Coagulation • Not a disease but a sign of an underlying disorder; bleeding/thrombotic disorder • Severity is variable; may be life-threatening • Triggers may include sepsis, trauma, shock, cancer, abruptio placentae, toxins, and allergic reactions, malignancies, liver disease • Altered hemostasis mechanism causes massive clotting in microcirculation; as clotting factors are consumed and lost, bleeding occurs; symptoms are related to tissue ischemia and bleeding 31 Copyright © 2008 Lippincott Williams & Wilkins. Disseminated Intravascular Coagulation • Manifestations include simultaneous bleeding and thrombosis; – Pallor, petechiae, purpura, oozing, bleeding, hematomas, cyanosis, tissue necrosis… • Lab tests - prolonged PT/PTT, elevated d dimer – See table 31-20 • Treatment: treat underlying cause, correct tissue ischemia, replace fluids and electrolytes, maintain blood pressure, replace coagulation factors, and use heparin 32 Copyright © 2008 Lippincott Williams & Wilkins. Heparin Induced Thrombocytopenia • Complication of heparin therapy – Higher risk with prolonged use • Hallmark sign is decline in platelet count, usually after 4-14 days (usually drops by 50% or more) • Patients at risk for bleeding; also for thrombosis (venous or arterial) • Treatment includes cessation of heparin, institution of alternative anticoagulation; follow platelet count 33 Copyright © 2008 Lippincott Williams & Wilkins. • Review Heparin, Low Molecular Weight Heparin, and Warfarin therapies – Pharmacology book 34 Copyright © 2008 Lippincott Williams & Wilkins. Nursing Process—Assessment of the Patient With DIC • Be aware of patients who are at risk for DIC and assess for signs and symptoms of the condition • Assess for signs and symptoms and progression of thrombi and bleeding 35 Copyright © 2008 Lippincott Williams & Wilkins. Nursing Process—Diagnosis of the Patient With DIC • Risk for fluid volume deficiency • Risk for impaired skin integrity • Risk for imbalanced fluid volume • Ineffective tissue perfusion • Death anxiety Copyright © 2008 Lippincott Williams & Wilkins. 36 Collaborative Problems/Potential Complications • Renal failure • Gangrene • Pulmonary embolism or hemorrhage • Acute respiratory distress syndrome • Stroke 37 Copyright © 2008 Lippincott Williams & Wilkins. Nursing Process--Planning the Care of the Patient With DIC • Major goals include maintenance of hemodynamic status, maintenance of intact skin and oral mucosa, maintenance of fluid balance, maintenance of tissue perfusion, enhanced coping, and absence of complications 38 Copyright © 2008 Lippincott Williams & Wilkins. Interventions • Assessment and interventions should target potential /actual sites of organ damage • Monitor and assess carefully for bleeding and thrombosis • Avoid trauma and procedures that increase the risk of bleeding, including activities that increase intracranial pressure 39 Copyright © 2008 Lippincott Williams & Wilkins. Blood Transfusion Administration • Review patient history including history of transfusions and transfusion reactions; note concurrent health problems and obtain baseline assessment and VS • Perform patient teaching and obtain consent • Equipment: IV (19-20 gauge or greater for PRBCs), appropriate tubing, and normal saline solution • Procedure to identify patient and blood product • Monitoring of patient and VS • Postprocedure care • Nursing management of adverse reactions Copyright © 2008 Lippincott Williams & Wilkins. 40 Complications see table 31-33! • • • • • • • • • Febrile nonhemolytic reaction Acute hemolytic reaction Allergic reaction (mild or severe) Circulatory overload Bacterial contamination Transfusion-related acute lung injury Delayed hemolytic reaction Disease acquisition Complications of long-term transfusion therapy Copyright © 2008 Lippincott Williams & Wilkins. 41 Alternative to blood transfusion • • • • Growth factors Erythropoietin Granulocyte-Colony Stimulating Factor Granulocyte-Macrophage Colony Stimulating Factor • Thrombopoeitin 42 Copyright © 2008 Lippincott Williams & Wilkins. Peripheral Blood Stem Cell Tranplantation and Bone Marrow Tranplantation • Autologous stem cell transplantation uncommon • Donor tranplantation - marrow stem cells or bone marrow from a donor are transfused – First, patient undergoes intense chemo or radiation to ablate the patient’s own marrow – Success depends on tissue compatibility and the patient’s tolerance of the immunosuppression • Nursing management is focused on prevention of infection and early detection of complication 43 Copyright © 2008 Lippincott Williams & Wilkins.