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1. The healthcare provider prescribes diagnostic tests for a client with pneumonia identified on a chest X-ray. Which diagnostic test should the nurse review for implementation to guide the most therapeutic treatment of pneumonia?
- A. Sputum culture and sensitivity
- B. Blood cultures
- C. Arterial blood gases (ABG)
- D. Computerized tomography (CT) of the chest
Correct answer: A
Rationale: Sputum culture and sensitivity is the most appropriate diagnostic test for pneumonia as it helps in identifying the causative organism, which is crucial for guiding the selection of the most effective antibiotic therapy. Blood cultures (choice B) are more useful in identifying systemic infections rather than pneumonia specifically. Arterial blood gases (ABG) (choice C) are helpful in assessing oxygenation but do not directly aid in identifying the causative organism. Computerized tomography (CT) of the chest (choice D) is useful for evaluating structural abnormalities in the lungs but is not the initial test of choice for diagnosing pneumonia.
2. What is a priority intervention for a patient experiencing a thyroid storm?
- A. Administering antipyretics.
- B. Cooling the patient.
- C. Administering beta-blockers.
- D. Administering antithyroid medications.
Correct answer: D
Rationale: During a thyroid storm, the priority intervention is to administer antithyroid medications to reduce thyroid hormone levels quickly. These medications, such as propylthiouracil or methimazole, help inhibit the production of thyroid hormones. Administering antipyretics (choice A) may help reduce fever, but it does not address the underlying cause of the thyroid storm. Cooling the patient (choice B) may provide symptomatic relief but does not address the thyroid hormone dysregulation. Administering beta-blockers (choice C) can help manage symptoms like tachycardia and hypertension, but it does not target the root cause of the thyroid storm.
3. A client admitted with left-sided heart failure has a heart rate of 110 beats per minute and is becoming increasingly dyspneic. Which additional assessment finding by the nurse supports the client's admitting diagnosis?
- A. An enlarged, distended abdomen.
- B. Crackles in the bases of both lungs.
- C. Jugular vein distension.
- D. Peripheral edema.
Correct answer: B
Rationale: The correct answer is B. Crackles in the bases of the lungs are indicative of fluid accumulation, which is common in left-sided heart failure. In left-sided heart failure, the heart is unable to effectively pump blood from the lungs to the rest of the body, leading to a backup of fluid in the lungs. This results in crackles heard on auscultation. Choices A, C, and D are not specific to left-sided heart failure. An enlarged, distended abdomen may indicate ascites or liver congestion. Jugular vein distension is more commonly associated with right-sided heart failure, and peripheral edema is a sign of fluid accumulation in the tissues, which can occur in both types of heart failure but is not as specific to left-sided heart failure as crackles in the lungs.
4. The client with chronic renal failure is being educated on dietary restrictions. Which of the following foods should the client avoid?
- A. Bananas.
- B. Oranges.
- C. Rice.
- D. Apples.
Correct answer: A
Rationale: The correct answer is A: Bananas. Bananas are high in potassium, and clients with chronic renal failure are often advised to follow a low-potassium diet to prevent hyperkalemia. Oranges and apples are also high in potassium and should be avoided by clients with renal issues. Rice, on the other hand, is low in potassium and is generally considered safe for individuals with chronic renal failure to consume in moderation.
5. 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.
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