Correct Answer: A

Rationale: In a postoperative client, a low-grade fever can be an early sign of infection, which is crucial to report to the healthcare team for timely intervention. Shortness of breath and decreased urine output are also important to monitor, but in the context of postoperative care, infection is a more immediate concern. A high platelet count is not typically a priority in the immediate postoperative period.

Correct Answer: D

Rationale: The correct answer is D: Elevated temperature. Cocaine is a stimulant drug that can lead to an increase in body temperature. Hypotension (choice A) is less likely as cocaine tends to increase blood pressure. Memory loss (choice B) and slurred speech (choice C) are not typically immediate effects of recent cocaine use.

Correct Answer: D

Rationale: Abdominal distention and rigidity may indicate a postoperative complication, such as bowel obstruction or peritonitis, and should be reported to the provider. While monitoring urine output, heart rate, and wound drainage are essential postoperative assessments, they are not as concerning as abdominal distention and rigidity, which could signal a more urgent issue requiring immediate attention.

Correct Answer: B

Rationale: Checking gastric residual volumes every 6 hours is essential in preventing aspiration in clients receiving continuous enteral feedings. This practice helps determine if the stomach is adequately emptying, reducing the risk of regurgitation and aspiration. Elevating the head of the bed to 30 degrees, not 15 degrees, is recommended to further prevent aspiration by reducing the risk of reflux. Monitoring the pH of gastric aspirate is important to assess tube placement but does not directly prevent aspiration. Instilling air into the tube before feeding is not a recommended practice and does not prevent aspiration.

Correct Answer: B

Rationale: The correct answer is B: 'Check your pulse before taking this medication.' When a patient is prescribed digoxin, it is crucial to monitor their pulse rate because digoxin can cause bradycardia (slow heart rate) as a side effect. In contrast, choices A, C, and D are incorrect. Taking digoxin with meals is not necessary; it should be taken consistently at the same time every day. Taking digoxin with an antacid is not recommended as it can interfere with the absorption of the medication. While digoxin can cause hypokalemia (low potassium levels), patients should not increase their potassium intake without healthcare provider guidance to avoid potential complications.