Bupivacaine local injection in anorectal surgery.

A retrospective study of 46 patients who received bupivacaine local injections after hemorrhoidectomy were compared to a matching group of 46 patients of similar age and sex distribution who underwent the same operation. Pain medications requirement on the same day of operation and on subsequent days were measured and found to be the same in both groups. The incidence of urinary retention was equal in both groups. However, the group receiving bupivacaine had a shorter hospital stay. In this respect, local injection of bupivacaine after hemorrhoidectomy may have a role in making patients more comfortable and shortening hospital stay.