Rationale: A. Administer naloxone if the client's respiratory rate is greater than 24/min: Naloxone is an opioid antagonist indicated for opioid-induced respiratory depression.. A respiratory rate greater than 24/min suggests tachypnea, which may be related to pain or anxiety. Administering naloxone in this situation could abruptly reverse analgesia and precipitate acute pain. B. Provide analgesic medication prior to physical activities: Administering opioid analgesia before ambulation, coughing, deep breathing, or participation in physical therapy improves comfort and promotes effective participation in recovery activities. Adequate pain control reduces splinting, enhances lung expansion, and decreases the risk of postoperative complications such as atelectasis and pneumonia. C. Inform the client to monitor for loose stools while taking opioid analgesia: Opioids decrease gastrointestinal motility by binding to mu receptors in the enteric nervous system, leading to delayed peristalsis and increased fluid absorption. The expected adverse effect is constipation rather than diarrhea. D. Withhold analgesic medication unless the client reports pain: Postoperative pain management is most effective when provided on a scheduled basis or prior to activities that increase discomfort. Waiting until pain becomes severe can lead to heightened sympathetic activation, delayed mobilization, and impaired respiratory effort.