ATI RN
Final Exam Pathophysiology
1. When preparing to administer parenteral acyclovir (Zovirax) to an 80-year-old patient with chronic renal failure and herpes simplex, what would the nurse expect in regard to the dose?
- A. The dose is smaller due to the herpes simplex infection.
- B. The dose is smaller based on the patient's kidney function.
- C. The dose is higher in treating genital herpes.
- D. The dose is higher if the creatinine clearance is above 4.0 mg/dL.
Correct answer: B
Rationale: In patients with chronic renal failure, especially in older adults, dosages of medications excreted renally need to be adjusted based on kidney function. Acyclovir is primarily eliminated by the kidneys, so in a patient with chronic renal failure, the dose would need to be smaller to prevent drug accumulation and toxicity. Choice A is incorrect because the dose adjustment is more related to the patient's kidney function than the presence of herpes simplex. Choice C is incorrect because the type of herpes infection does not determine the dose adjustment for acyclovir. Choice D is incorrect as the creatinine clearance is a more accurate measure of kidney function compared to creatinine levels.
2. A male patient with benign prostatic hyperplasia (BPH) is prescribed finasteride (Proscar). What is the expected therapeutic effect of this medication?
- A. Decreased urinary frequency and urgency
- B. Decreased blood pressure
- C. Increased urinary output
- D. Increased hair growth
Correct answer: A
Rationale: The correct answer is A: Decreased urinary frequency and urgency. Finasteride is used to reduce the size of the prostate gland in patients with BPH, which helps alleviate symptoms such as urinary frequency and urgency. Choice B, decreased blood pressure, is incorrect because finasteride is not indicated for lowering blood pressure. Choice C, increased urinary output, is incorrect as finasteride does not typically increase urine production. Choice D, increased hair growth, is incorrect as the primary use of finasteride is not for promoting hair growth but rather for treating BPH.
3. A client with multiple sclerosis (MS) is experiencing a relapse. Which of the following factors is most likely contributing to the relapse?
- A. Taking an over-the-counter multivitamin
- B. Experiencing high levels of emotional stress
- C. Getting a flu shot
- D. Engaging in strenuous physical activity
Correct answer: B
Rationale: Emotional stress can trigger a relapse in multiple sclerosis by exacerbating symptoms. While taking an over-the-counter multivitamin and getting a flu shot are generally safe, they are not typically known to trigger MS relapses. Engaging in strenuous physical activity, if done carefully, can actually have benefits for individuals with MS by improving strength and mobility, so it is less likely to be the cause of a relapse.
4. A healthcare professional is documenting the recent vital signs for several clients on an acute medical ward of a hospital. Which hospital client with a noninfectious diagnosis would be most likely to have a fever?
- A. A 71-year-old female with limited mobility, chronic obstructive pulmonary disease (COPD), and vascular dementia
- B. A 33-year-old female with a postoperative deep vein thrombosis and pulmonary embolism
- C. A 51-year-old obese male with hepatic encephalopathy secondary to alcohol abuse
- D. A 71-year-old male with congestive heart failure and peripheral edema
Correct answer: B
Rationale: The correct answer is B. Pulmonary emboli can produce fever even without infection. This is known as a noninfectious cause of fever. Choices A, C, and D do not typically present with fever as a prominent symptom. Limited mobility, COPD, vascular dementia, hepatic encephalopathy, alcohol abuse, congestive heart failure, and peripheral edema are not directly associated with causing fever in the absence of infection, unlike pulmonary embolism.
5. 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.
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