Nokea
A client with AIDS is terminally ill and wants to name a person as a beneficiary to his life insurance in exchange for immediate cash. What is the term that best describes this arrangement?
- A. Power of attorney
- B. Beneficiary settlement
- C. Viatical settlement
- D. Life insurance guardianship
Correct Answer: C
Rationale: A viatical settlement allows a terminally ill client to sell their life insurance policy for immediate cash naming a beneficiary.
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What antibody mediates Type I hypersensitivity?
- A. IgA
- B. IgE
- C. IgG
- D. IgM
Correct Answer: B
Rationale: The correct answer is B: IgE. In Type I hypersensitivity reactions, IgE antibodies are involved. Firstly, upon initial exposure to an allergen, B cells produce IgE antibodies specific to that allergen. IgE antibodies then bind to mast cells and basophils. Upon subsequent exposure to the same allergen, it cross-links the IgE antibodies on mast cells and basophils, leading to degranulation and release of inflammatory mediators like histamine. This results in the symptoms of Type I hypersensitivity reactions.
Choice A (IgA) is incorrect because IgA is mainly involved in mucosal immunity. Choice C (IgG) is incorrect because while IgG can be involved in Type II and Type III hypersensitivity reactions, it is not the primary antibody in Type I hypersensitivity. Choice D (IgM) is incorrect because IgM is typically involved in the primary immune response, not in Type I hypersensitivity reactions.
In a patient with a positive Chvostek’s sign, the nurse would anticipate the IV administration of which medication?
- A. Calcitonin
- B. Vitamin D
- C. Loop diuretics
- D. Calcium gluconate
Correct Answer: D
Rationale: Chvostek’s sign indicates hypocalcemia, so calcium gluconate is administered to restore normal calcium levels.
During data collection, the nurse learns the patient is allergic to shellfish. Which precautions should be implemented during the patient's hospitalization?
- A. The patient should be placed in a private room.
- B. The kitchen should use dedicated equipment for all of the patient's food preparation.
- C. Iodine-based skin preparations should be replaced with different bactericidal cleansers.
- D. The patient's allergy should be noted on the medical record and communicated clearly to all caretakers.
Correct Answer: D
Rationale: Rationale:
1. The correct answer is D because it addresses the essential action of noting the patient's allergy on the medical record and communicating it to all caretakers to prevent inadvertent exposure.
2. Choice A is not necessary unless the patient's allergy poses an infection control risk that warrants isolation.
3. Choice B is excessive and not required as long as cross-contamination is prevented during food preparation.
4. Choice C is unrelated to the patient's shellfish allergy and not a standard precaution in this scenario.
Which of the following statements is NOT true
- A. During T cell development the decision to become a CD4 or a CD8 positive cell is a random event
- B. During T cell differentiation the decision to become a TH1 or a TH2 cell CD4+ is a random event
- C. TH2 CD4+ cells secrete IL-4
- D. IL-10 is TH2 polarizing cytokine
Correct Answer: B
Rationale: The correct answer is B: During T cell differentiation, the decision to become a TH1 or a TH2 cell CD4+ is not a random event. This is because T cell differentiation into TH1 or TH2 cells is guided by specific signals from the environment, such as cytokines present during activation. TH1 cells are induced by IL-12 and IFN-gamma, while TH2 cells are induced by IL-4. This process is not random but rather a result of specific signaling cues.
A: During T cell development, the decision to become a CD4 or a CD8 positive cell is not a random event. It is determined by interactions with thymic stromal cells and the T cell receptor.
C: TH2 CD4+ cells do secrete IL-4, so this statement is true.
D: IL-10 is not a TH2 polarizing cytokine; rather, it is known to have regulatory functions in immune responses.
Benefits from the human microbiome include all the following except:
- A. Out-competition of pathogenic species
- B. Production of important metabolites called short chain fatty acids
- C. Secretion of enzymes such as lysozyme that degrade the cell wall of pathogenic species
- D. Provision of signals leading to the development of the gut-associated immune system
Correct Answer: C
Rationale: The correct answer is C because the human microbiome does not secrete enzymes like lysozyme; instead, lysozyme is produced by the human body. A is correct as the microbiome can out-compete harmful bacteria. B is correct as the microbiome produces short chain fatty acids. D is correct as the microbiome helps in the development of the gut-associated immune system. Therefore, C is the only option that does not accurately describe a benefit from the human microbiome.