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What is the causative agent in HIV/AIDS?
- A. trichomonas vaginalis
- B. Treponema pallidum
- C. Human, T-cell lymphotrophio virus
- D. Chlamydia tranchomatis
Correct Answer: C
Rationale: The correct answer is C: Human, T-cell lymphotrophic virus, as it is the causative agent for HIV/AIDS. This virus specifically targets and infects the body's T-cells, weakening the immune system. Trichomonas vaginalis, Treponema pallidum, and Chlamydia trachomatis are all different pathogens that do not cause HIV/AIDS. Trichomonas vaginalis is a protozoan parasite that causes trichomoniasis, Treponema pallidum causes syphilis, and Chlamydia trachomatis causes chlamydia. Therefore, the correct answer is C based on the specific viral agent responsible for HIV/AIDS.
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A client with pernicious anemia is receiving parenteral vitamin B12 therapy. Which client statement indicates effective teaching about this therapy?
- A. “I will receive parenteral vitamin B12 therapy until my signs and symptoms disappear.”
- B. “I will receive parenteral vitamin B12 therapy until my vitamin B12 level returns to normal.”
- C. “I will receive parenteral vitamin B12 therapy monthly for 6 months to a year.”
- D. “I will receive parenteral vitamin B12 therapy for the rest of my life.”
Correct Answer: D
Rationale: The correct answer is D: “I will receive parenteral vitamin B12 therapy for the rest of my life.” This statement is correct because pernicious anemia is a lifelong condition requiring ongoing vitamin B12 supplementation. Patients with pernicious anemia lack intrinsic factor, which is needed to absorb vitamin B12 from food. Therefore, they need lifelong B12 therapy to prevent complications such as anemia and neurological damage.
Choices A, B, and C are incorrect because they suggest a limited duration of therapy. Pernicious anemia is a chronic condition that necessitates continuous treatment. Choice A implies therapy until signs and symptoms disappear, which may not address the underlying cause of the deficiency. Choice B mentions therapy until vitamin B12 levels normalize, which may not prevent recurrence. Choice C suggests monthly therapy for a fixed period, which may not be sufficient for lifelong management.
With pulmonary edema, there is usually an alteration in:
- A. Afterload
- B. Preload
- C. Contractility
- D. All of the above
Correct Answer: D
Rationale: Pulmonary edema causes an increase in pressure in the pulmonary circulation, leading to an alteration in afterload due to increased resistance. It also causes fluid accumulation in the pulmonary vessels, affecting preload. Additionally, the heart may compensate by increasing contractility. Therefore, all of the above choices are altered in pulmonary edema. The incorrect choices are A, B, and C individually as they only represent one aspect of the alterations seen in pulmonary edema, while the correct answer D encompasses all three factors affected in this condition.
Five girls were victims of wasp and bee bites. Emergency treatment for these includes:
- A. A poultice of sodium bicarbonate and water may give relief
- B. A weak solution of household ammonia also decreases pain and is safe to use
- C. A and B are correct
- D. None of these
Correct Answer: A
Rationale: The correct answer is A because a poultice of sodium bicarbonate and water can help neutralize the venom and reduce pain from wasp and bee bites. Sodium bicarbonate has alkaline properties that can counteract the acidic venom. Option B is incorrect as household ammonia can cause skin irritation and should not be applied to insect bites. Option C is incorrect because only option A is a safe and effective treatment for wasp and bee bites. Option D is incorrect as there is a suitable emergency treatment available.
The effectiveness of Levodopa can be reduced when taking:
- A. Pyridoxine
- B. Bromocriptine
- C. Amantadine
- D. Amantadine
Correct Answer: A
Rationale: The correct answer is A: Pyridoxine. Pyridoxine can reduce the effectiveness of Levodopa by converting it into dopamine before it reaches the brain, decreasing the therapeutic effects. Bromocriptine and Amantadine are actually used in combination with Levodopa to enhance its effects by different mechanisms. Choosing Amantadine as the answer is incorrect because it is listed twice in the choices and would not interfere with Levodopa's effectiveness.
Nurse Raymond is giving instructions to an elderly client on diabetic foot care. Which teaching is not part of foot care?
- A. wear comfortable shoes that fit well and protect your feet
- B. trim your toenails straight across and file edges with emery board
- C. wash your feet in hot water to keep feet soft
- D. wear shoes at the beach or on hot pavement
Correct Answer: C
Rationale: The correct answer is C because washing feet in hot water can lead to burns or skin damage for those with diabetes. A: Proper footwear is essential for preventing foot injuries. B: Trimming toenails straight across helps prevent ingrown nails. D: Wearing shoes on hot surfaces prevents burns or blisters. Overall, C is incorrect due to the potential harm it can cause to diabetic feet.