title: Ambulatory anorectal surgery under perianal anesthetics infiltration: analysis of 222 cases.
abstract: OBJECTIVE
  To assess the safety and early postoperative results of ambulatory anorectal surgery using perianal anesthetics infiltration.
  
  
  METHODS
  This retrospective study included 222 elective ambulatory anorectal surgical patients under perianal anesthetics infiltration between March 2002 and September 2005. Perioperative pain, postoperative complications, and surgical outcomes were analyzed.
  
  
  RESULTS
  The patients were 122 males and 100 females aged 16-84 (mean 43) years undergoing 150 closed hemorrhoidectomies, 55 lateral internal anal sphincterotomies, 28 fistulotomies, and 3 cauterizations for condyloma acuminata. Perianal block was effective, neither intravenous analgesics nor conversion to general anesthesia was needed. The average pain score was 3.4 +/- 2.3 on day 1 and 1.2 +/- 1.5 on day 7 postoperatively. Urinary retention was found in one case (0.5%). None of the patients needed hospital admission, except one emergency hospitalization (0.5%) due to bleeding.
  
  
  CONCLUSIONS
  Perianal anesthetics infiltration allows the surgeons to perform anorectal surgery in a day-case regimen safely and effectively with a low incidence of urinary retention.
authors: Department of Surgery, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand. sislr@mahidol.ac.th
authors: Varut
authors: V
authors: Lohsiriwat
authors: Darin
authors: D
authors: Lohsiriwat
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000556:Ambulatory Surgical Procedures / Q000379:methods*; D001003:Anal Canal / Q000601:surgery*; D000779:Anesthetics, Local / Q000008:administration & dosage*; D017558:Elective Surgical Procedures; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010149:Postoperative Pain / Q000453:epidemiology; D011184:Postoperative Period; D012007:Rectum / Q000601:surgery*; D012189:Retrospective Studies; D016896:Treatment Outcome
chemical_list: D000779:Anesthetics, Local