ATI RN
ATI Hematologic System Test Questions
Question 1 of 5
Which of the following best characterizes the function of ferroportin in iron metabolism?
Correct Answer: D
Rationale: Ferroportin is a transmembrane iron exporter responsible for releasing iron from cells into the bloodstream. It is crucial in regulating systemic iron levels. Choice A is incorrect as storage iron is typically stored as ferritin. Choice B is incorrect as ferroportin is not found in the plasma but on cell membranes. Choice C is incorrect as erythroid progenitors do not directly interact with ferroportin. Therefore, the correct answer is D as it accurately describes the function of ferroportin in iron metabolism.
Question 2 of 5
A client is having a bone marrow aspiration and biopsy. What action by the nurse takes priority?
Correct Answer: B
Rationale: The correct answer is B: Ensure that valid consent is in the medical record. This is the priority because obtaining informed consent is essential before any invasive procedure like a bone marrow aspiration and biopsy. It ensures that the client understands the procedure, risks, benefits, and alternatives. Administering pain medication (A), having the client shower (C), and premedicating with sedatives (D) are important aspects of care but obtaining valid consent is crucial for legal and ethical reasons before proceeding with the procedure.
Question 3 of 5
An older client asks the nurse why 'people my age' have weaker immune systems than younger people. What responses by the nurse are best? (Select all that apply.)
Correct Answer: C
Rationale: Rationale: - As we age, there is a decrease in the production of plasma proteins, which are essential for immune function. - Lower levels of plasma proteins can lead to a weaker immune response. - This decline in plasma proteins can make older individuals more susceptible to infections. - Choices A, B, and D are incorrect as they do not directly address the impact of aging on immune system function.
Question 4 of 5
Which of the following requires IL-2 and IL-4 in the conversion of unilineage progenitor cell into mature circulating cell?
Correct Answer: D
Rationale: The correct answer is D: B lymphocyte. IL-2 and IL-4 are crucial for the differentiation of B lymphocytes from unilineage progenitor cells. IL-2 supports proliferation and survival of B cells, while IL-4 promotes their differentiation into mature circulating cells. Neutrophils, eosinophils, and basophils develop independently of IL-2 and IL-4. Neutrophils mainly require granulocyte colony-stimulating factor (G-CSF), eosinophils require IL-5, and basophils are influenced by IL-3 and IL-5. Therefore, the correct answer is D as B lymphocytes specifically rely on IL-2 and IL-4 for their maturation.
Question 5 of 5
A 40 year old patient is presented with unilateral palpebral edema and ipsilateral lymphadenopathy. He later develops megaesophagus and megacolon as complications. Which of the following vector is responsible for this parasitic infection?
Correct Answer: C
Rationale: The correct answer is C: Rhodnius prolixus. This vector is responsible for transmitting Trypanosoma cruzi, causing Chagas disease. The initial symptoms of unilateral palpebral edema and lymphadenopathy are characteristic of Chagas disease. The complications of megaesophagus and megacolon are also common manifestations of chronic Chagas disease. Glossina morsitans (A) transmits African trypanosomiasis (sleeping sickness), Ixodes scapularis (B) transmits Lyme disease, and Simulium damnosum (D) transmits onchocerciasis (river blindness), so they are not associated with the symptoms described.