A 52-year-old man with chronic low back pain following an automobile accident desires pain relief. He has significant gastroesophageal reflux and abdominal pain. Which of the following agents may improve his pain but worsen his gastrointestinal symptoms?

Correct Answer: D

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: D

Rationale: Antihistamines, particularly first-generation ones (e.g., diphenhydramine), block H1 receptors but cross the blood-brain barrier, causing sedation. The statement 'This medication could make me very sleepy' shows the client understands this key side effect, indicating effective education. Alcohol exacerbates sedation, so that's incorrect. Increased fluids aren't specifically required unless addressing dry mouth, a secondary issue. OTC status doesn't guarantee safety, a common misconception. The nurse evaluates learning by the client's recognition of drowsiness, critical for safety (e.g., avoiding driving), making choice D the best evidence of comprehension.

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Correct Answer: C

Rationale: Potassium chloride corrects hypokalemia but is caustic IV, risking phlebitis or tissue damage if it infiltrates. Monitoring the IV site prevents complications, a key precaution. Undiluted or rapid infusion causes burns or arrhythmias'standard is diluted, <10 mEq/hour. A syringe pump isn't required'IV pumps suffice. Site monitoring aligns with potassium's administration risks, critical in hypokalemia where cardiac effects (e.g., arrhythmias) are at stake, making C the nurse's priority to ensure safe delivery.

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.