ATI LPN
Immune System Questions Questions
Question 1 of 5
Which medication is used to inhibit renal reabsorption of urates?
Correct Answer: A
Rationale: Probenecid is the correct answer as it inhibits renal reabsorption of urates by blocking the URAT1 transporter. By decreasing uric acid reabsorption, it increases urate excretion, thus lowering serum uric acid levels. Allopurinol and Febuxostat are xanthine oxidase inhibitors used to reduce uric acid production, not reabsorption. Colchicine is used to treat acute gout attacks by reducing inflammation and does not affect urate reabsorption.
Question 2 of 5
A measure of the concentration of hemoglobin in a given volume of packed red blood cells is represented by:
Correct Answer: D
Rationale: The correct answer is D, Mean corpuscular hemoglobin concentration (MCHC). MCHC represents the concentration of hemoglobin in a given volume of packed red blood cells. It is calculated by dividing the hemoglobin concentration by the hematocrit value. MCV (A) represents the average volume of red blood cells, not hemoglobin concentration. Red cell width (B) is not a standard measure of hemoglobin concentration. MCH (C) represents the average amount of hemoglobin in individual red blood cells, not the concentration in a given volume.
Question 3 of 5
The following are antigen presenting cells EXCEPT:
Correct Answer: A
Rationale: Neutrophils are not antigen presenting cells as they primarily function in innate immunity by phagocytosing pathogens. B cells, macrophages, and dendritic cells are antigen presenting cells that process and present antigens to activate adaptive immune responses. Neutrophils lack the specialized machinery for antigen presentation, making choice A the correct answer.
Question 4 of 5
A client presents at the primary health care provider's office with complaints of a ring-like rash on his upper leg. Which question should the nurse ask first?
Correct Answer: B
Rationale: The correct answer is B: "Have you been camping in the last month?" This question is the first one to ask because the client presenting with a ring-like rash on the upper leg suggests a possible exposure to ticks, which are commonly found in outdoor environments like camping areas. Ticks can transmit Lyme disease, which often presents with a characteristic rash called erythema migrans. By asking about recent camping activities, the nurse can gather crucial information to assess the likelihood of a tick bite and the need for further evaluation or treatment. Choices A, C, and D are incorrect because they do not directly address the potential exposure to ticks from outdoor activities like camping. Asking about cats in the home (choice A) is more relevant for conditions like cat scratch fever. Inquiring about flu-like symptoms (choice C) and physical contact with others with a similar rash (choice D) may be important but are not as pertinent as determining outdoor activities that could lead to a tick bite.
Question 5 of 5
The nurse is reviewing the results of serum laboratory studies drawn on a client with acquired immunodeficiency syndrome who is receiving didanosine. The nurse interprets that the client may have the medication discontinued by the health care provider if which elevated result is noted?
Correct Answer: C
Rationale: The correct answer is C: Serum amylase level. Elevated serum amylase levels indicate pancreatic toxicity, a known adverse effect of didanosine. The nurse should be concerned as this can lead to pancreatitis. Discontinuation of the medication is necessary to prevent further complications. A: Serum protein level is not directly related to didanosine toxicity. B: Blood glucose level is not typically affected by didanosine. D: Serum creatinine level is not typically affected by didanosine and does not indicate the need for discontinuation of the medication.