ATI RN
WGU Pathophysiology Final Exam
1. A patient with osteoporosis is prescribed raloxifene (Evista). What is the primary therapeutic action of this medication?
- A. It decreases bone resorption and increases bone density.
- B. It stimulates the formation of new bone.
- C. It increases calcium absorption in the intestines.
- D. It increases the excretion of calcium through the kidneys.
Correct answer: A
Rationale: The correct answer is A. Raloxifene works by decreasing bone resorption and increasing bone density. This helps in preventing further bone loss and reducing the risk of fractures in patients with osteoporosis. Choice B is incorrect because raloxifene does not stimulate the formation of new bone, but rather helps to maintain existing bone mass. Choice C is incorrect as raloxifene does not directly increase calcium absorption in the intestines. Choice D is also incorrect as raloxifene does not increase the excretion of calcium through the kidneys.
2. A 25-year-old just had a colonoscopy and was diagnosed with Crohn disease. Which of the following symptoms is consistent with this diagnosis?
- A. Right lower quadrant cramping
- B. Severe bloody diarrhea
- C. Nausea and vomiting
- D. Mostly affects the rectum
Correct answer: A
Rationale: The correct answer is A: Right lower quadrant cramping. Crohn's disease commonly presents with abdominal pain, particularly in the right lower quadrant. Choice B, severe bloody diarrhea, is more characteristic of ulcerative colitis, another type of inflammatory bowel disease. Choice C, nausea and vomiting, are not typical symptoms of Crohn's disease. Choice D is incorrect as Crohn's disease can affect any part of the gastrointestinal tract, not just the rectum.
3. Which of the following mediators of inflammation causes increased capillary permeability and pain?
- A. Serotonin
- B. Histamine
- C. Bradykinin
- D. Nitric oxide
Correct answer: C
Rationale: Bradykinin is the correct answer. It is a potent mediator of inflammation that causes increased capillary permeability and is responsible for the pain associated with inflammation. Serotonin and histamine are also mediators of inflammation, but they are not primarily known for increasing capillary permeability or inducing pain. Nitric oxide is involved in various physiological processes but is not a primary mediator of inflammation that causes increased capillary permeability and pain.
4. A client with atrial fibrillation is at risk for which of the following complications?
- A. Deep vein thrombosis (DVT)
- B. Pulmonary embolism
- C. Hypertensive crisis
- D. Myocardial infarction
Correct answer: B
Rationale: Corrected Rationale: A client with atrial fibrillation is at increased risk of thromboembolism due to blood stasis in the atria. This can lead to the formation of blood clots, which may travel to the lungs and cause a pulmonary embolism. Pulmonary embolism is a serious complication of atrial fibrillation. Choices A, C, and D are incorrect because while atrial fibrillation can lead to complications such as stroke or heart failure, it is specifically associated with an increased risk of pulmonary embolism due to the clot formation associated with the condition.
5. What instruction should the nurse include in this patient's health education regarding chloroquine phosphate (Aralen) for malaria prophylaxis?
- A. “Take your pill on the same day each week.”
- B. “Watch out for any unusual rash on your trunk and arms, but this isn't cause for concern.”
- C. “Remember to take your chloroquine on an empty stomach.”
- D. “We'll provide you with enough syringes and teach you how to inject the drug.”
Correct answer: A
Rationale: The correct instruction for the nurse to include in this patient's health education regarding chloroquine phosphate (Aralen) for malaria prophylaxis is to “Take your pill on the same day each week.” This is essential because chloroquine is typically taken once a week on the same day to ensure consistent protection against malaria. Choice B is incorrect because while rashes are a possible side effect of chloroquine, they are not a usual occurrence and should be reported to the healthcare provider. Choice C is incorrect because chloroquine does not need to be taken on an empty stomach. Choice D is incorrect as chloroquine is typically administered orally, not by injection.
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