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

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.

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.

Correct Answer: B

Rationale: The correct answer is B: 'Monitor for constipation.' Calcium carbonate can cause constipation as a side effect. Educating clients on dietary adjustments, such as increasing fluid intake and fiber consumption, can help alleviate this issue. Choice A is incorrect because calcium carbonate supplementation is used to treat hypocalcemia, not cause it. Choice C is incorrect because calcium carbonate should be taken with food for optimal absorption. Choice D is incorrect because calcium carbonate is available over the counter, not as a prescription medication.

Correct Answer: B

Rationale: The correct answer is B: Serum creatinine. Vancomycin is known to be nephrotoxic, meaning it can cause kidney damage. Monitoring serum creatinine levels is essential to assess kidney function and detect any signs of nephrotoxicity. Blood glucose levels (choice A) are not directly affected by vancomycin. INR levels (choice C) are typically monitored for clients on anticoagulants, not vancomycin. Liver function tests (choice D) are not primarily affected by vancomycin use; kidney function is of greater concern.

Correct Answer: D

Rationale: The correct answer is D: Chicken breast provides a low-fat protein source, and mashed potatoes and spinach provide high-calorie nutrients suitable for managing liver failure. Option A (Scrambled eggs, bacon, and pancakes) is high in protein, which is not suitable for a low-protein diet. Option B (Grilled cheese sandwich, potato chips, chocolate pudding) contains high protein and may not be appropriate for the client. Option C (Steak, French fries, corn) is high in protein and fat, which are not recommended for this client's dietary requirements.

Correct Answer: C

Rationale: The correct answer is C: To increase reabsorption of water in the renal tubules. Vasopressin mimics the action of antidiuretic hormone (ADH) by increasing the reabsorption of water in the renal tubules. This leads to decreased urine output, helping to manage symptoms of diabetes insipidus, which is characterized by excessive thirst and urination. Choices A, B, and D are incorrect. Vasopressin does not stimulate the pancreas to secrete insulin, slow the absorption of glucose in the intestine, or directly increase blood pressure.

Correct Answer: D

Rationale: The correct answer is D because an elevated temperature is a common manifestation of dehydration. Choices A, B, and C are not indicative of dehydration. A urine specific gravity of 1.010 is within normal range, weight gain suggests fluid overload, and a hematocrit of 45% is also within normal limits and not specifically related to dehydration.

Correct Answer: B

Rationale: Hypotension is a critical sign of anaphylaxis. During anaphylaxis, there is a widespread vasodilation leading to a drop in blood pressure, which manifests as hypotension. This can be accompanied by other symptoms such as swelling, difficulty breathing, hives, and itching. Bradycardia (choice A) is not typically associated with anaphylaxis; instead, tachycardia is more common due to the body's response to the allergic reaction. Increased appetite (choice C) is unrelated to anaphylaxis, as individuals experiencing anaphylaxis often feel unwell and may have nausea or vomiting. Decreased respiratory rate (choice D) is also not a typical finding in anaphylaxis; instead, respiratory distress and wheezing are more commonly observed.

Correct Answer: A

Rationale: Corrected Rationale: When educating a client about fluoxetine, it is essential to mention that it can take several weeks for the therapeutic effects to be noticed. This is because fluoxetine is an SSRI that requires time to build up in the body and start producing its intended effects. Choice B is incorrect as fluoxetine is not an antipsychotic medication but an SSRI. Choice C is inaccurate because fluoxetine can be taken at any time of the day, and there is no specific requirement to take it at night. Choice D is incorrect as all medications, including fluoxetine, have potential side effects that should be discussed with the client.