ATI LPN
Questions About the Immune System Questions
Question 1 of 5
One of the following is a primary lymphoid tissue:
Correct Answer: A
Rationale: The correct answer is A: Thymus. The thymus is considered a primary lymphoid tissue because it is where T cells mature and differentiate. It plays a crucial role in the development of the immune system. The other choices, B: Spleen, C: Lymph node, and D: Liver, are considered secondary lymphoid tissues where immune responses take place but not where lymphocytes mature.
Question 2 of 5
The nurse is performing an assessment on a client who has been diagnosed with an allergy to latex. In determining the client's risk factors, the nurse should question the client about an allergy to which food item?
Correct Answer: D
Rationale: The correct answer is D: Bananas. Latex allergy is associated with cross-reactivity to certain fruits like bananas due to similar proteins. Therefore, questioning the client about a banana allergy is crucial to assess the risk of allergic reactions. Eggs (A), milk (B), and yogurt (C) are not typically associated with latex allergies, making them less relevant in this context.
Question 3 of 5
A 50-year-old woman with joint pain, morning stiffness, Hb 10.3 g/dL, MCV 80 fL, low serum iron, low iron-binding capacity. Most likely explanation for anemia?
Correct Answer: C
Rationale: Rationale: The correct answer is C, anemia of chronic disease. This type of anemia is characterized by low serum iron, low iron-binding capacity, and normocytic, normochromic red blood cells. In chronic inflammatory conditions like rheumatoid arthritis, the body’s response to inflammation leads to impaired iron metabolism and decreased erythropoiesis. This explains the low iron levels and anemia in this patient. Choices A, B, and D do not fit the clinical picture as occult blood loss, vitamin deficiency, and sideroblastic anemia would present with different laboratory findings and mechanisms of anemia.
Question 4 of 5
A 52-year-old man with cirrhosis, weight loss, liver mass. Most important initial diagnostic study?
Correct Answer: A
Rationale: The correct answer is A: Serum α-fetoprotein level. In a patient with cirrhosis and liver mass, an elevated α-fetoprotein level suggests hepatocellular carcinoma. This is important for early detection and management. Choice B (Colonoscopy) is not indicated for liver masses. Choice C (Hepatitis C viral RNA) is relevant for hepatitis C diagnosis but not specific for evaluating a liver mass. Choice D (Upper GI endoscopy) is used for assessing upper gastrointestinal issues, not liver masses. Therefore, Serum α-fetoprotein level is the most appropriate initial diagnostic study in this scenario.
Question 5 of 5
A patient with endocarditis on warfarin, rifampin stopped. Best next step?
Correct Answer: C
Rationale: Rationale: 1. Rifampin induces warfarin metabolism, reducing its efficacy. 2. Discontinuing rifampin causes a sudden increase in warfarin levels. 3. To avoid bleeding risk, reduce warfarin dosage. Summary: A: Increasing dosage can lead to over-anticoagulation. B: Continuing 15 mg/d without rifampin can cause overdose. D: Stopping warfarin abruptly can lead to thrombotic events.