Correct Answer: C

Rationale: The correct instruction the nurse should include is to advise the client to eat foods that are rich in potassium. Furosemide is a loop diuretic that can cause the loss of potassium, leading to hypokalemia. Eating foods high in potassium can help prevent this electrolyte imbalance. Choice A is incorrect because furosemide does not directly interact with magnesium. Choice B is incorrect because furosemide is usually taken in the morning to prevent nighttime diuresis. Choice D is incorrect because furosemide is a diuretic that typically leads to a decrease in blood pressure rather than an increase.

Correct Answer: A

Rationale: The correct answer is to ensure that electrical cords are not frayed. Frayed electrical cords pose a fire hazard when oxygen is in use. Keeping oxygen tanks in a horizontal position (Choice B) is important to prevent leaks but is not the priority compared to fire safety. Storing extra oxygen tanks in a closed closet (Choice C) is also important but not as immediate as preventing fire hazards. Applying petroleum-based gel to the inside of the nostrils (Choice D) is unrelated to oxygen therapy safety and is not recommended.

Correct Answer: C

Rationale: A temperature of 38.2°C (100.8°F) suggests the possibility of an underlying infection or fever, which should be evaluated before proceeding with the transfusion to prevent complications. Elevated temperature can indicate an immune response to incompatible blood components, increasing the risk of a transfusion reaction. The other vital signs and lab results provided are within acceptable ranges for administering packed RBCs, making choices A, B, and D less likely to cause a delay in the transfusion.

Correct Answer: C

Rationale: The correct answer is C. There should be 2 cm of water in the water seal chamber of the chest tube system. A level of 1 cm may indicate a leak or compromised functionality that requires intervention. Choices A, B, and D are not findings that necessarily require immediate intervention. Tidaling with spontaneous respirations is an expected finding, the drainage collection chamber being 1/3 full is within normal limits, and a suction chamber pressure of -20 cm H2O indicates appropriate suction for chest drainage.

Correct Answer: B

Rationale: The correct answer is B. Sucralfate should be taken on an empty stomach, 1 hour before meals. This timing allows sucralfate to form a protective barrier over the ulcer, enhancing healing. Choice A is incorrect because sucralfate should not be taken with an antacid. Choice C is incorrect because sucralfate should not be taken with food. Choice D is incorrect because sucralfate should not be taken at bedtime only; it is best absorbed on an empty stomach.