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Postoperative Urinary Retention
Case Synopsis A 73-year-old man undergoes total hip arthroplasty performed under spinal anesthesia using 1.5 mL of 0.75% bupivacaine (11.25 mg) with 100 μg of morphine. The patient receives approximately 1500 mL of intravenous fluids during the 2-hour procedure. After…