Nursing Elites

1. A client has been prescribed phenytoin. Which of the following should the nurse monitor to prevent toxicity?

• A. Blood pressure
• B. Complete blood count
• C. Serum phenytoin levels
• D. Liver function tests

Correct answer: C

Rationale: Corrected Rationale: Serum phenytoin levels should be regularly monitored to prevent toxicity because the therapeutic range is narrow. Monitoring blood pressure (choice A), complete blood count (choice B), and liver function tests (choice D) are not directly related to preventing phenytoin toxicity.

2. A nurse is teaching a client about fecal occult blood testing (FOBT) for the screening of colorectal cancer. Which of the following statements should the nurse include in the teaching?

• A. “Your provider will use stool samples from your bowel movement to perform the test.”
• B. “Your provider will prescribe a stimulant laxative prior to the procedure to cleanse the bowel.”
• C. “You should begin biennial fecal occult blood testing for colorectal cancer screening at 50 years old.”
• D. “You should avoid taking corticosteroids prior to testing.”

Correct answer: D

Rationale: The correct answer is D. The nurse should instruct the client to avoid corticosteroids and vitamin C prior to testing to prevent false-positive results. Choice A is incorrect because stool samples from bowel movements, not from digital rectal examinations, are used for FOBT. Choice B is incorrect because a stimulant laxative is not typically prescribed before FOBT; rather, the client is instructed to follow specific dietary restrictions. Choice C is incorrect because biennial fecal occult blood testing for colorectal cancer screening usually begins at 50 years old, not 40.

3. A healthcare professional is verifying nasogastric tube placement by the pH of aspirated gastric fluid. Which of the following pH values provides a good indication of correct tube placement?

• A. 2
• B. 5
• C. 7
• D. 9

Correct answer: A

Rationale: The correct answer is A: '2'. Gastric contents with a pH between 0 and 4 provide a good indication of appropriate tube placement. A pH of 2 is within this range, indicating that the tube is correctly placed in the stomach. Choices B, C, and D are incorrect because a pH of 5, 7, or 9 does not fall within the expected acidic pH range of gastric fluid.

4. A nurse is assessing a client for signs of heart failure. Which of the following findings should the nurse monitor?

• A. Decreased heart rate
• B. Peripheral edema
• C. Increased energy levels
• D. Hyperglycemia

Correct answer: B

Rationale: The correct answer is B: Peripheral edema. Peripheral edema, the accumulation of fluid causing swelling in the extremities, is a classic sign of heart failure due to fluid overload. This occurs because the heart's reduced pumping efficiency leads to fluid backup in the circulatory system. Choices A, C, and D are incorrect. Decreased heart rate is not typically associated with heart failure; instead, tachycardia or an increased heart rate may be observed. Increased energy levels are not an expected finding in heart failure, as this condition often causes fatigue and weakness. Hyperglycemia is not a direct sign of heart failure; however, it can be present in individuals with uncontrolled diabetes or as a result of certain treatments, but it is not a specific indicator of heart failure.

5. A healthcare provider is assessing a client with chronic obstructive pulmonary disease (COPD) receiving oxygen therapy. Which of the following findings indicates oxygen toxicity?

• A. Oxygen saturation 94%
• B. Decreased respiratory rate
• C. Wheezing
• D. Peripheral cyanosis

Correct answer: B

Rationale: The correct answer is B: Decreased respiratory rate. In clients with COPD, especially when receiving oxygen therapy, a decreased respiratory rate is indicative of oxygen toxicity. This occurs because their respiratory drive is often dependent on low oxygen levels. Oxygen saturation of 94% is within an acceptable range and does not necessarily indicate oxygen toxicity. Wheezing is more commonly associated with airway narrowing or constriction, while peripheral cyanosis is a sign of decreased oxygen levels in the peripheral tissues, not oxygen toxicity.

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