ATI RN
WGU Pathophysiology Final Exam
1. The unique clinical presentation of a 3-month-old infant in the emergency department leads the care team to suspect botulism. Which assessment question posed to the parents is likely to be most useful in the differential diagnosis?
- A. Has your child received all recommended vaccinations?
- B. Has your child been feeding poorly or showing signs of constipation?
- C. Has your child been exposed to any sick individuals?
- D. Has your child been displaying signs of respiratory distress?
Correct answer: B
Rationale: The correct answer is B. Poor feeding and constipation are common early symptoms of infant botulism, which is caused by a neurotoxin that impairs muscle function. Option A is unrelated to the presentation of botulism. Option C does not directly relate to the symptoms of botulism. Option D is more indicative of respiratory issues rather than the constellation of symptoms seen in botulism.
2. A patient with a history of cardiovascular disease is prescribed hormone replacement therapy (HRT). What should the nurse emphasize regarding the long-term risks associated with HRT?
- A. HRT is associated with an increased risk of cardiovascular events, including heart attack and stroke.
- B. HRT may decrease the risk of osteoporosis.
- C. HRT may improve mood and energy levels.
- D. HRT may increase the risk of breast cancer.
Correct answer: A
Rationale: HRT is associated with an increased risk of cardiovascular events, including heart attack and stroke, particularly in patients with a history of cardiovascular disease.
3. A client with amyotrophic lateral sclerosis (ALS) is admitted to the hospital. Which intervention should the nurse include in the plan of care?
- A. Administer muscle relaxants as prescribed.
- B. Assist the client with activities of daily living (ADLs).
- C. Provide nutritional support to prevent aspiration.
- D. Encourage the client to participate in physical therapy.
Correct answer: C
Rationale: The correct intervention for a client with ALS is to provide nutritional support to prevent aspiration. ALS causes muscle weakness, including the muscles used for swallowing, increasing the risk of aspiration. Providing proper nutrition and support can help prevent this complication. Administering muscle relaxants (Choice A) may not be suitable for ALS as it can further weaken muscles. While assisting with ADLs (Choice B) and encouraging physical therapy (Choice D) are important aspects of care, the priority for a client with ALS is to prevent complications related to swallowing and nutrition.
4. A patient with a diagnosis of renal failure is being treated with epoetin alfa (Epogen). Frequent assessment of which of the following laboratory values should be prioritized before and during treatment?
- A. AST
- B. C-reactive protein
- C. CBC
- D. ALT
Correct answer: A
Rationale: The correct answer is AST. Epoetin alfa is a medication used to treat anemia associated with chronic renal failure. During treatment with epoetin alfa, it is crucial to monitor AST levels as this medication can potentially lead to liver toxicity. Assessing AST levels before and throughout treatment helps in early detection of any liver abnormalities. C-reactive protein is not specifically related to the use of epoetin alfa in renal failure. While CBC (Complete Blood Count) monitoring is essential during treatment with epoetin alfa to evaluate the response to therapy, prioritizing AST assessment is more critical due to the potential for liver toxicity. ALT monitoring is also important but AST is prioritized in this scenario.
5. Following a knee injury, a football player is taking ibuprofen, a nonsteroidal anti-inflammatory drug, for the control of pain. Which drug action is most likely to result in diminished sensation of pain for the player?
- A. Inhibition of cyclooxygenase (COX) enzymes
- B. Activation of opioid receptors
- C. Blocking of NMDA receptors
- D. Stimulation of serotonin receptors
Correct answer: A
Rationale: The correct answer is A: Inhibition of cyclooxygenase (COX) enzymes. Ibuprofen works by inhibiting these enzymes, which are involved in the production of prostaglandins that mediate pain and inflammation. This inhibition leads to decreased prostaglandin production, resulting in a decrease in pain and inflammation. Choices B, C, and D are incorrect because ibuprofen does not act on opioid receptors, NMDA receptors, or serotonin receptors to control pain. It primarily exerts its analgesic and anti-inflammatory effects through COX enzyme inhibition.
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