ATI LPN
Multiple Choice Questions on Immune System Questions
Question 1 of 5
Vaccinations help prepare the body to fight invasions of a specific pathogen by
Correct Answer: B
Rationale: The correct answer is B: stimulating antibody production. Vaccinations introduce a weakened or inactive form of a pathogen to trigger the immune response. This leads to the production of specific antibodies that recognize and attack the pathogen upon future exposure. Antibodies play a crucial role in neutralizing and eliminating pathogens. A: Inhibiting antigen production is incorrect because vaccines aim to stimulate the immune system's response to antigens, not inhibit their production. C: Inhibiting white blood cell production is incorrect because white blood cells are vital components of the immune system and are not suppressed by vaccinations. D: Stimulating red blood cell production is incorrect because vaccinations do not have a direct impact on red blood cell production, which is primarily regulated by the body's own mechanisms.
Question 2 of 5
Human immunodeficiency virus about how the virus is transmitted- statements include in teaching?
Correct Answer: B
Rationale: Rationale: B is correct because HIV can be transmitted through contact with infected blood, with the highest concentration of the virus found in blood. Other body fluids like sputum, saliva, cerebrospinal fluid, urine, and semen can also contain the virus. Incorrect Choices: A is incorrect as HIV is not necessarily transmitted when symptoms manifest or during the asymptomatic period. C is incorrect as HIV can be transmitted through various routes, not just sexual contact. D is incorrect as HIV is not transmitted through airborne means.
Question 3 of 5
Teaching with AP about standard precaution when caring for a client who has vancomycin resistant enterococcus of the urine- PPE should nurse recommend the AP to use when caring for the client?
Correct Answer: B
Rationale: The correct answer is B because wearing don clean gloves provides a barrier to prevent direct contact with bodily fluids contaminated with VRE. Gloves are essential in preventing the transmission of bacteria during care. Choice A is incorrect because goggles are not specifically necessary for VRE of the urine unless there is a risk of splashing or spraying of bodily fluids towards the eyes. Choice C is unnecessary unless there is a high risk of exposure to splashes or sprays to the face. Choice D is not necessary for all interactions unless there is a risk of contamination of clothing with bodily fluids.
Question 4 of 5
The nurse is reviewing blood results for an HIV patient. The nurse knows that the patient is at stage 2 when the CD4 count is at what level?
Correct Answer: D
Rationale: The correct answer is D (250 cells/μL). At stage 2 of HIV infection, the CD4 count typically ranges from 200 to 499 cells/μL. This means a CD4 count of 250 cells/μL falls within this range, indicating the patient is at stage 2. Choice A (534 cells/μL) is incorrect as it is above the range for stage 2. Choice B (601 cells/μL) is also incorrect as it is above the range for stage 2. Choice C (100 cells/μL) is incorrect as it falls below the range for stage 2. Thus, the correct answer is D based on the CD4 count range associated with stage 2 of HIV infection.
Question 5 of 5
In acute lymphatic leukaemia:
Correct Answer: A
Rationale: The correct answer is A because acute lymphatic leukaemia specifically involves the overproduction of abnormal lymphocytes in the bone marrow. This leads to a decrease in normal blood cell production. Choice B is incorrect because leukaemia primarily affects the production of specific types of white blood cells, not all types. Choice C is incorrect because acute lymphatic leukaemia involves abnormal lymphocytes, not specifically B lymphocytes. Choice D is incorrect because not all types of white blood cells are affected in acute lymphatic leukaemia.