Nokea
The nurse will be assisting the physician with a bone marrow aspiration. Where should the nurse cleanse, clip hair, and drape the skin prior to the procedure?
- A. Over the posterior superior iliac crest.
- B. Over the anterior tibia
- C. Over the radius
- D. Over the metatarsal area
Correct Answer: A
Rationale: The posterior superior iliac crest is the preferred site because no vital organs or blood vessels are nearby. The anterior tibia, radius, or metatarsal area are not used for bone marrow aspirations.
You may also like to solve these questions
The nursing instructor is teaching her clinical group about laboratory blood tests. What is the major function of erythrocytes?
- A. Act as mediators for the immune system
- B. Destroy invading organisms
- C. Transportation of Oâ?? to the tissues and removal of COâ?? from the tissues
- D. Oxygenation of the brain
Correct Answer: C
Rationale: Erythrocytes (or RBCs) are flexible, anuclear (lacking a nucleus), biconcave disks covered by a thin membrane through which oxygen (Oâ??) and carbon dioxide (COâ??) pass freely. The flexibility of erythrocytes allows them to change shape as they travel through capillaries. Their major function is to transport Oâ?? to and remove COâ?? from the tissues. The RBCs are not involved in immunological functions, so choices A and B are not correct. Oxygenation of the brain is important but that is not a major function of RBCs.
Macrophages attack and destroy foreign substances to the body. Where does this action occur?
- A. At the site of trauma
- B. In the lymph node
- C. In the vascular system
- D. In the thymus
Correct Answer: B
Rationale: As lymph passes through the node, macrophages attack and engulf foreign substances such as bacteria and viruses, abnormal body cells, and other debris. The other options are incorrect.
A client is being treated for anemia and has a hemoglobin level of 9.6 g/dL. What does the nurse understand is the basic nutritional component of heme in hemoglobin that the client may be deficient in?
- A. Folic acid
- B. Copper
- C. Protein
- D. Iron
Correct Answer: D
Rationale: Iron is the basic nutritional component of heme in hemoglobin. Folic acid is essential for the maturation of red blood cells. Copper (minute amount) is involved in the transfer of iron from storage to plasma.
Undifferentiated cells that migrate to the thymus gland develop into which of the following?
- A. A lymphocytes
- B. D lymphocytes
- C. T lymphocytes
- D. S lymphocytes
Correct Answer: C
Rationale: The thymus gland is lymphatic tissue in the upper chest that contains undifferentiated stem cells released from bone marrow. Once the undifferentiated cells migrate to the thymus gland, they develop into T lymphocytes because they are thymus derived. The other options are distractors for this question.
A client is admitted to the emergency department with significant blood loss. The physician prescribes 2 units of packed red blood cells to be transfused immediately. Which blood groups would be compatible with his O Rh-positive blood group?
- A. O Rh-positive or O Rh-negative
- B. Only O Rh-positive
- C. Only O Rh-negative
- D. AB Rh-positive or Rh-negative
Correct Answer: A
Rationale: People with Rh-positive blood can receive Rh-positive or Rh-negative blood because a negative Rh indicates a missing Rh factor. Antibodies, immunoglobulins in plasma that inactivate any substance that is non-self, react with incompatible red blood cell antigens. Therefore, people with type O blood are universal donors because they do not have antigens on the red cell membrane. Therefore, the client can be transfused with either O Rh-positive or O Rh-negative blood.