ATI LPN
Brunner & Suddarth's Textbook of Medical-Surgical Nursing 14e (Hinkle 2017)
Chapter 32 : Assessment of Hematologic Function and Treatment Modalities Questions
Question 1 of 5
A patient has been diagnosed with a lymphoid stem cell defect. This patient has the potential for a problem involving which of the following?
Correct Answer: A
Rationale: A defect in a myeloid stem cell can cause problems with erythrocyte, leukocyte, and platelet production. In contrast, a defect in the lymphoid stem cell can cause problems with T or B lymphocytes, plasma cells (a more differentiated form of B lymphocyte), or natural killer (NK) cells.
Question 2 of 5
The nurse is describing normal RBC physiology to a patient who has a diagnosis of anemia. The nurse should explain that the RBCs consist primarily of which of the following?
Correct Answer: B
Rationale: Mature erythrocytes consist primarily of hemoglobin, which contains iron and makes up 95% of the cell mass. RBCs are not made of fibrin or plasminogen. Hematocrit is a measure of RBC volume in whole blood.
Question 3 of 5
The nurse educating a patient with anemia is describing the process of RBC production. When the patients kidneys sense a low level of oxygen in circulating blood, what physiologic response is initiated?
Correct Answer: D
Rationale: If the kidney detects low levels of oxygen, as occurs when fewer red cells are available to bind oxygen (i.e., anemia), erythropoietin levels increase. The body does not compensate with vasoconstriction, decreased respiration, or increased stem cell activity.
Question 4 of 5
An older adult client is exhibiting many of the characteristic signs and symptoms of iron deficiency. In addition to a complete blood count, what diagnostic assessment should the nurse anticipate?
Correct Answer: A
Rationale: Iron deficiency in the adult generally indicates blood loss (e.g., from bleeding in the GI tract or heavy menstrual flow). Bleeding in the GI tract can be preliminarily identified by testing stool for the presence of blood. A bone marrow biopsy would not be undertaken for the sole purpose of investigating an iron deficiency. Lumbar puncture and urinalysis would not be clinically relevant.
Question 5 of 5
A patient is being treated for the effects of a longstanding vitamin B12 deficiency. What aspect of the patients health history would most likely predispose her to this deficiency?
Correct Answer: B
Rationale: Because vitamin B12 is found only in foods of animal origin, strict vegetarians may ingest little vitamin B12. Irregular menstrual periods, marijuana use, and blood donation would not precipitate a vitamin B12 deficiency.