ATI RN
WGU Pathophysiology Final Exam
1. In an adult patient suspected of having an androgen deficiency and considering treatment with testosterone, the use of testosterone would be most complicated by the presence of what preexisting health problem?
- A. Urinary incontinence
- B. BPH
- C. Chronic renal failure
- D. Type 2 diabetes
Correct answer: B
Rationale: The correct answer is BPH (Benign Prostatic Hyperplasia). Testosterone therapy can worsen symptoms of BPH by potentially increasing prostate size and stimulating the growth of prostate tissue. This can lead to complications such as urinary retention and the need for further medical interventions. Urinary incontinence (choice A) can have various causes but is not directly related to testosterone therapy. Chronic renal failure (choice C) and Type 2 diabetes (choice D) are not typically contraindications for testosterone therapy in the context of androgen deficiency.
2. What is the action of amphotericin B?
- A. It binds to ergosterol and forms holes in the membrane.
- B. It binds to an enzyme required for the synthesis of ergosterol.
- C. It disrupts the fungal cell walls rather than the cell membrane.
- D. It inhibits glucan synthetase required for glucan synthesis.
Correct answer: A
Rationale: Amphotericin B is an antifungal medication that acts by binding to ergosterol, a component of fungal cell membranes, forming pores that disrupt the integrity of the membrane. This action leads to leakage of cellular contents and ultimately cell death. Choice B is incorrect as amphotericin B does not bind to an enzyme required for the synthesis of ergosterol. Choice C is incorrect as the drug primarily affects the cell membrane rather than the cell wall. Choice D is also incorrect as amphotericin B does not inhibit glucan synthetase.
3. A 23-year-old pregnant female visits her primary care provider for her final prenatal checkup. The primary care provider determines that the fetus has developed an infection in utero. Which of the following would be increased in the fetus at birth?
- A. IgG
- B. IgA
- C. IgM
- D. IgD
Correct answer: C
Rationale: The correct answer is IgM. IgM is the first antibody produced in response to an infection and is elevated in a fetus with an in utero infection. IgG is the primary antibody responsible for providing immunity to the fetus and is transferred across the placenta during the third trimester. IgA is mainly found in mucosal areas and colostrum but not significantly elevated in fetal infections. IgD is involved in the development and maturation of B cells but not typically increased in fetal infections.
4. What long-term risks should the nurse discuss with a patient starting on hormone replacement therapy (HRT)?
- A. HRT is associated with increased risks of cardiovascular events and breast cancer, so these risks should be discussed with the patient.
- B. HRT can improve mood and energy levels, but it also increases the risk of osteoporosis.
- C. HRT can increase the risk of venous thromboembolism, so patients should undergo regular screening.
- D. HRT decreases the risk of fractures, but it also increases the risk of developing diabetes.
Correct answer: A
Rationale: The correct answer is A. When starting on hormone replacement therapy (HRT), the nurse should discuss the increased risks of cardiovascular events and breast cancer with the patient. These risks are important to consider to make an informed decision. Choice B is incorrect as HRT does not increase the risk of osteoporosis; in fact, it may help prevent it. Choice C is incorrect as while HRT can increase the risk of venous thromboembolism, regular screening is not the primary focus for discussion. Choice D is incorrect as HRT does not decrease the risk of fractures and is not primarily associated with an increased risk of developing diabetes.
5. Which disorder is caused by a Staphylococcus aureus organism producing a toxin leading to exfoliation and large blister formation?
- A. Herpes simplex I virus
- B. Bullous impetigo
- C. Necrotizing fasciitis
- D. Cellulitis
Correct answer: B
Rationale: Bullous impetigo is the correct answer because it is caused by a Staphylococcus aureus toxin that leads to exfoliation and the formation of large blisters. Herpes simplex I virus (Choice A) causes cold sores and is not associated with exfoliation and blister formation. Necrotizing fasciitis (Choice C) is a severe skin infection involving the deeper layers of skin and subcutaneous tissues, typically caused by bacteria such as Streptococcus or Clostridium species, not Staphylococcus aureus. Cellulitis (Choice D) is a common bacterial skin infection, but it does not involve exfoliation and blister formation as seen in bullous impetigo.
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