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Renal colic is a common cause of pain; however, there have been few reports of treating this pain with regional anesthesia. We report on a 49-year-old man presenting with severe left flank pain resulting from a 4-mm stone in the left ureter. The pain was minimally responsive to intravenous opioids. Left-sided paravertebral blocks were performed at T7 and T9 with 10 mL bupivacaine 0.5% with epinephrine 2.5 µg/mL to each paravertebral space. The pain resolved over the following 30 minutes, and the patient was discharged home. No further pain was experienced before and while subsequently passing the stone.
David Murphy (Thu,) studied this question.