ATI RN
ATI Pathophysiology
1. In a postmenopausal woman, what condition can be prevented by administering estradiol (Estraderm)?
- A. Endometriosis
- B. Amenorrhea
- C. Osteoporosis
- D. Uterine cancer
Correct answer: C
Rationale: The correct answer is C: Osteoporosis. Estradiol, a form of estrogen, is used to prevent osteoporosis in postmenopausal women by maintaining bone density. Choice A, Endometriosis, is incorrect as estradiol is not used to prevent or treat this condition. Choice B, Amenorrhea, is not prevented by estradiol but rather may result from hormonal changes. Choice D, Uterine cancer, is not directly prevented by estradiol; in fact, long-term unopposed estrogen use can increase the risk of uterine cancer.
2. Why is it important for a patient to take a new oral contraceptive at the same time each day?
- A. Taking the medication at the same time each day helps maintain stable hormone levels, which is critical for preventing pregnancy.
- B. Taking the medication at the same time each day reduces the risk of breakthrough bleeding.
- C. Taking the medication at the same time each day ensures consistent absorption and effectiveness.
- D. Taking the medication at the same time each day is important, but missing a dose occasionally is not a concern.
Correct answer: A
Rationale: The correct answer is A. Taking oral contraceptives at the same time each day is crucial for maintaining stable hormone levels, which is essential for the contraceptive's effectiveness in preventing pregnancy. Choice B is incorrect because the primary reason for taking the medication consistently is hormone level stability, not specifically to reduce breakthrough bleeding. Choice C is incorrect as it focuses on absorption and effectiveness, which are important but do not address the main reason for consistent timing. Choice D is incorrect because missing doses can impact contraceptive efficacy, making consistent timing essential for optimal protection.
3. On the advice of his brother, a 53-year-old man has made an appointment to request a prescription for Viagra. The nurse who works at the clinic is reviewing the man's medical history and would recognize what health problem as being prohibitive to this treatment?
- A. Type 2 diabetes, treated with metformin
- B. Hypercholesterolemia, treated with simvastatin
- C. Angina, treated with nitroglycerin
- D. Hypertension, treated with metoprolol
Correct answer: C
Rationale: Nitroglycerin is contraindicated with Viagra due to their combined effects on lowering blood pressure, which can result in a severe drop and potentially life-threatening complications. Using both medications together can lead to hypotension, putting the patient at risk. Therefore, the presence of angina treated with nitroglycerin would make prescribing Viagra unsafe. Choices A, B, and D are not directly contraindicated with Viagra and can be managed concurrently with this treatment.
4. Not realizing that its surface was hot, a woman has quickly withdrawn her hand from the surface of a bowl that she was removing from a microwave. Which phenomena has facilitated the rapid movement of her hand in response to the painful stimulus?
- A. Crossed-extensor reflex
- B. Flexor reflex
- C. Withdrawal reflex
- D. Stretch reflex
Correct answer: C
Rationale: The withdrawal reflex is a protective response that allows a person to quickly remove their hand from a painful stimulus.
5. A child's thymus gland is fully formed and proportionately larger than an adult's. Which of the following processes that contribute to immunity takes place in the thymus gland?
- A. Differentiation of B cells
- B. Production of natural killer (NK) cells
- C. Proliferation of T cells
- D. Filtration of antigens from the blood
Correct answer: C
Rationale: The correct answer is C: Proliferation of T cells. The thymus gland is responsible for the maturation and proliferation of T cells, which play a crucial role in adaptive immunity. Option A, differentiation of B cells, is incorrect because B cell maturation primarily occurs in the bone marrow. Option B, production of natural killer (NK) cells, is incorrect as NK cells are mainly produced in the bone marrow and lymph nodes. Option D, filtration of antigens from the blood, is incorrect as antigen filtration is not a primary function of the thymus gland.
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