Nursing Elites

1. A client with histoplasmosis has the following arterial blood gas (ABG) results: pH 7.30, PCO2 58 mm Hg, PO2 75 mm Hg, HCO3 27 mEq/L. Which of the following acid-base disturbances does the nurse recognize in these results?

• A. Metabolic acidosis
• B. Metabolic alkalosis
• C. Respiratory acidosis
• D. Respiratory alkalosis

Correct answer: A

Rationale: The client's ABG results show a low pH (acidosis) and an elevated PCO2, indicating respiratory acidosis. In respiratory acidosis, there is inadequate excretion of CO2, leading to increased PCO2 levels and a decrease in pH. Therefore, the correct answer is 'Metabolic acidosis'. Choices B, C, and D are incorrect. Metabolic alkalosis is characterized by elevated pH and bicarbonate levels. Respiratory acidosis involves low pH and high PCO2 levels, as seen in this case. Respiratory alkalosis is associated with high pH and low PCO2 levels.

2. Angiotensin-converting enzyme (ACE) inhibitors may be prescribed for the client with diabetes mellitus to reduce vascular changes and possibly prevent or delay the development of:

• A. Chronic obstructive pulmonary disease (COPD).
• B. Pancreatic cancer.
• C. Renal failure.
• D. Cerebrovascular accident.

Correct answer: C

Rationale: The correct answer is C: Renal failure. ACE inhibitors are commonly used in clients with diabetes mellitus to help reduce the progression of diabetic nephropathy by improving renal blood flow. This medication class can help prevent or delay the development of renal failure in these clients. Choices A, B, and D are incorrect because ACE inhibitors do not have a direct impact on preventing or delaying the development of chronic obstructive pulmonary disease, pancreatic cancer, or cerebrovascular accidents in clients with diabetes mellitus.

3. A client is tested for HIV with the use of an enzyme-linked immunosorbent assay (ELISA), and the test result is positive. The nurse should tell the client that:

• A. HIV infection has been confirmed
• B. The client probably has an opportunistic infection
• C. The test will need to be confirmed with the use of a Western blot
• D. A positive test is a normal result and does not mean that the client is infected with HIV

Correct answer: C

Rationale: When an ELISA test for HIV is positive, it is essential to confirm the result with a Western blot. The Western blot is the confirmatory test for HIV. Choice A is incorrect because a positive ELISA test does not confirm HIV infection. Choice B is incorrect as it assumes a different diagnosis. Choice D is incorrect because a positive ELISA test does indicate potential HIV infection and requires confirmation.

4. For a client with peripheral vascular disease (PVD) of the lower extremities who is trying to manage their condition well, which routine should the nurse evaluate as appropriate?

• A. Resting with the legs elevated above the level of the heart.
• B. Walking slowly but steadily for 30 minutes twice a day.
• C. Minimizing activity.
• D. Wearing antiembolism stockings at all times when out of bed.

Correct answer: B

Rationale: The correct answer is B. Walking slowly but steadily for 30 minutes twice a day is appropriate for clients with PVD as it helps stimulate collateral circulation and improve blood flow. Choice A is incorrect because while elevating the legs can help with symptoms temporarily, it is not as effective as walking for improving circulation. Choice C, minimizing activity, is not recommended as it can lead to further deconditioning and worsen symptoms. Choice D, wearing antiembolism stockings, is not specifically indicated for PVD and may not address the underlying circulation issues.

5. Which is a characteristic that distinguishes sulfonamides from other drugs used to treat bacterial infections?

• A. Sulfonamides are bactericidal.
• B. Sulfonamides are synthetic compounds.
• C. Sulfonamides have antifungal and antiviral properties.
• D. Sulfonamides increase bacterial synthesis of folic acid.

Correct answer: B

Rationale: The characteristic that distinguishes sulfonamides from other drugs used to treat bacterial infections is that sulfonamides are synthetic compounds, not derived from biologic substances. Choice A is incorrect because sulfonamides are bacteriostatic, not bactericidal. Choice C is incorrect because sulfonamides do not have antifungal and antiviral properties. Choice D is incorrect because sulfonamides act by inhibiting bacterial synthesis of folic acid, not increasing it.

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