WGU D115 Unit 5 Exam Questions and Answers (Verified Solutions) Updated

Which two processes are involved in platelet activation? Cyclooxygenase-1 (COX-1) inactivation Aggregation Adhesion - correct answers Platelet activation involves three linked processes: (1) adhesion, (2) activation, and (3) aggregation. Platelet activation stimuli include epinephrine, thrombin, and collagen. Select four common causes of anemia from the list below. Increased red cell destruction Chronic blood loss Severe bleeding Impaired erythrocyte production Blood transfusion - correct answers Impaired production of erythrocytes, increased red cell destruction, severe bleeding, and chronic blood loss can cause anemia. explain why the nurse practitioner should ask the patient about her paresthesias and ataxia. - correct answers Without the presence of intrinsic factor, vitamin B12 will not be absorbed effectively from the gastrointestinal tract. Describe what causes pernicious anemia. - correct answers Pernicious anemia is caused by vitamin B12 deficiency, which is often associated with the end stage of type A chronic atrophic (autoimmune) gastritis. Autoimmune gastritis impairs the production of IF, which is required for vitamin B12 uptake from the gut. Select three possible causes of lymphadenopathy from the options below. Inflammatory condition Lipid storage disease Neoplastic disease Cardiac disease Peripheral vascular dysfunction - correct answers There are multiple causes of lymphadenopathy. It may be caused by neoplastic disease, so all lymphadenopathies must be closely followed and evaluated. Lymphadenopathy may also be caused by an immunologic or inflammatory condition and by lipid storage disease; this type of lymphadenopathy is usually widespread, including the liver and spleen. What is the most common cause of iron deficiency anemia (IDA) in children during the first few years of life? Dietary insufficiencies Absorption problems Blood loss Increased iron requirement - correct answers Insufficient dietary iron is the most common cause of IDA in children during the first few years of life.