A client with urolithiasis is preparing for discharge after lithotripsy. Which intervention should the nurse include in the client's postoperative discharge instructions?

A. Report when hematuria becomes pink tinged: Pink-tinged urine is expected for several days following lithotripsy due to trauma from stone fragmentation. Reporting this immediately is unnecessary unless bleeding becomes heavy or prolonged. B. Use incentive spirometer: Incentive spirometry is typically emphasized after thoracic or abdominal surgery to prevent atelectasis. Lithotripsy does not directly impair lung expansion, so this intervention is not routinely required for discharge teaching. C. Monitor urinary stream for decrease in output: Passage of stone fragments can obstruct urinary flow, leading to complications such as hydronephrosis or infection. Monitoring urine output ensures early detection of obstruction and is a critical discharge instruction. D. Restrict physical activities: Light activity is encouraged after lithotripsy to promote passage of stone fragments. Complete restriction is not necessary, unless the client is experiencing significant pain or other complications.