Chapter 15: The Hematologic System deWit: Medical-Surgical Nursing: Concepts & Practice, 3rd Edition

MULTIPLE CHOICE 1. Which organ releases the erythropoietin-stimulating factor that directs stem cells in the bone marrow to make blood cells? a. Brain b. Lung c. Kidney d. Liver ANS: C The kidney secretes the erythropoietin-stimulating factor to stimulate the stem cells to make blood cells. PTS:1 DIF: Cognitive Level: Knowledge REF: 328 OBJ:2 (theory) TOP: Erythropoiesis KEY: Nursing Process Step: N/A MSC: NCLEX: Physiological Integrity: Physiological Adaptation 2. What is the average life span of a red blood cell (RBC)? a. 30 days b. 90 days c. 100 days d. 120 days ANS: D RBCs live approximately 120 days. PTS:1 DIF: Cognitive Level: Knowledge REF: 328 OBJ:1 (theory) TOP: Life of RBCs KEY: Nursing Process Step: Planning MSC: NCLEX: Health Promotion and Maintenance 3. Which organ can help the body compensate in the event of a massive hemorrhagic episode by contracting and adding blood to the circulating volume? a. Spleen b. Liver c. Pancreas d. Bone marrow ANS: A The spleen has the ability to contract and add blood to the circulating volume in the event of massive hemorrhage. PTS: 1 DIF: Cognitive Level: Knowledge REF: 330 OBJ: 1 (clinical) TOP: Spleen KEY: Nursing Process Step: Implementation MSC: NCLEX: Physiological Integrity: Physiological Adaptation 4. The nurse is reviewing laboratory reports for multiple patients. Which patient’s laboratory values require the nurse’s immediate attention? a. Hemoglobin (Hgb) of 7.1 g/dL; white blood cell (WBC) count of 4500 mL/mm3 b. Potassium of 5.5 mEq/L; WBC count of 7000 mL/mm3 c. Sodium of 129 mEq/L; WBC of 6000 mL/mm3; 13.2 g/dL d. Calcium of 8.8 mg/dL; WBC count of 8000 mL/mm3