Week 2.docx - Question 1 0.125 out of 0.125 points A...

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Question 1 0.125 out of 0.125 points A serious complication of deep vein thrombosis is Selected Answer: b. pulmonary embolus. Correct Answer: b. pulmonary embolus. Response Feedback: Deep vein thrombosis is treated aggressively, as it is the most frequent source of pulmonary embolus. Deep vein thrombosis is not the cause of a stroke. Hypertensive crisis is unrelated to deep vein thrombosis. Extremity necrosis could result from prolonged arterial occlusion. Question 2 0.125 out of 0.125 points The arterial oxygen content (CaO 2 ) for a patient with PaO 2 100 mm Hg, SaO 2 95%, and hemoglobin 15 g/dL is _____ mL oxygen/dL. Selected Answer: b. 19. 4 Correct Answer: b. 19. 4 Response Feedback: A hemoglobin level of 15 divided by 100 equals 0.15. Multiply by 1.34 mL and then multiply by saturation on 95%. The result is 19.1% oxyhemoglobin. Then add 0.3% volume dissolved in plasma to get the total content of oxygen/dL. The arterial blood oxygen content is the amount of oxygen carried in the arterial blood. 1909.8 is an incorrect answer if the formula is followed correctly. 210 is incorrect when the formula is applied correctly. 21.05 is an incorrect response if the formula is applied correctly. Question 3 0.125 out of 0.125 points A low mean corpuscular hemoglobin concentration (MCHC) and mean corpuscular volume (MCV) are characteristic of which type of anemia? Selected Answer: a. Iron deficiency
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Correct Answer: a. Iron deficiency Response Feedback: Iron-deficiency anemia is characterized by a low hemoglobin concentration and low mean corpuscular volume. Vitamin B 12 deficiency anemia is characterized by a high concentration of MCV and a normal level of MCHC. Folate deficiency anemia is characterized by a normal mean corpuscular hemoglobin concentration and a high mean corpuscular volume. Erythropoietin deficiency creates hypoxia from a low hemoglobin level. Question 4 0.125 out of 0.125 points The most appropriate treatment for secondary polycythemia is Selected Answer: c. measured to improve oxygenation. Correct Answer: c. measured to improve oxygenation. Response Feedback: Secondary polycythemia is because of chronic hypoxemia with a resultant increase in erythropoietin production. The goal of treatment is aimed at measures to reduce hypoxemia and improve oxygenation by implementing oxygen therapy. IV fluids may be used to treat relative polycythemia, because it is related to dehydration. Phlebotomy or increases in laboratory studies do not have an effect on secondary polycythemia. Polycythemia is not treated with chemotherapeutic agents. Question 5 0.125 out of 0.125 points The prothrombin time (PT) and INR (international normalized ratio) measure the integrity of Selected Answer: d. extrinsic pathway. Correct Answer: d. extrinsic pathway. Response Feedback: The PT and INR assess the extrinsic pathway of coagulation. Platelet function is measured through a CBC. The aPTT assesses the intrinsic pathway of coagulation. The D-dimer assay reflects fibrinolysis.
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Question 6 0.125 out of 0.125 points The goal of long term heparin for the management of a deep vein thrombosis is to Selected
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  • Spring '17
  • Scott
  • Aplastic Anemia

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