title: Double-blind, randomized trial comparing Harmonic Scalpel hemorrhoidectomy, bipolar scissors hemorrhoidectomy, and scissors excision: ligation technique.
abstract: OBJECTIVE
  The aim of this study was to compare the outcome of patients receiving hemorrhoidectomy using Harmonic Scalpel, bipolar scissors, and the conventional scissors excision-ligation technique.
  
  
  METHODS
  Eighty-six patients with irreducible prolapsing piles were randomly assigned to receive 1) Milligan-Morgan hemorrhoidectomy using scissors excision-ligation technique or 2) bipolar scissors hemorrhoidectomy and Harmonic Scalpel hemorrhoidectomy. Neither the patient nor the independent assessor were aware of the technique used at operation. Patients were followed up at 4 and 12 weeks after operation. The measured outcomes included 1) operation time; 2) blood loss; 3) postoperative hospital stay; 4) pain score; 5) pain expectation score; 6) date of first bowel movement; 7) number of pethidine injections; 8) number of dologesic tablets taken; 9) time off work or normal activity; 10) wound healing; 11) satisfaction score; and 12) postoperative complications, including anal stenosis and fecal or flatus incontinence.
  
  
  RESULTS
  There was no difference among the three groups in the operation time, hospital stay, pain expectation score, day of first bowel movement, number of dologesic tablets taken, time off work or normal activity, wound healing, and satisfaction score. The complication rate also did not differ in the three groups. Both Harmonic Scalpel hemorrhoidectomy and bipolar scissors hemorrhoidectomy were superior to Milligan-Morgan hemorrhoidectomy in terms of reduced blood loss. Harmonic Scalpel hemorrhoidectomy had the best pain score when compared with bipolar scissors hemorrhoidectomy and Milligan-Morgan hemorrhoidectomy, and patients required significantly less pethidine injection after Harmonic Scalpel hemorrhoidectomy than after Milligan-Morgan hemorrhoidectomy. Although the time required to return to work or normal activity remained similar, patients after Harmonic Scalpel hemorrhoidectomy had the best satisfaction score among the three groups.
  
  
  CONCLUSIONS
  The study shows that Harmonic Scalpel hemorrhoidectomy is as good as bipolar scissors hemorrhoidectomy in terms of reduced blood loss but is superior because it is associated with less postoperative pain and hence, better patient satisfaction. However, these observed benefits are small, and the time off work or normal activity remains similar.
authors.affiliation: Department of Surgery, Pamela Youde Nethersole Eastern Hospital, Chai Wan, Hong Kong Special Adminisrative Region, China.
authors.forename: C C
authors.initials: CC
authors.lastname: Chung
authors.forename: J P Y
authors.initials: JP
authors.lastname: Ha
authors.forename: Y P
authors.initials: YP
authors.lastname: Tai
authors.forename: W W C
authors.initials: WW
authors.lastname: Tsang
authors.forename: M K W
authors.initials: MK
authors.lastname: Li
mesh_terms: D000203:Activities of Daily Living; D000328:Adult; D002425:Cautery; D004311:Double-Blind Method; D005260:Female; D006484:Hemorrhoids / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008026:Ligation; D008297:Male; D008875:Middle Aged; D010149:Postoperative Pain; D017060:Patient Satisfaction; D019106:Postoperative Hemorrhage; D013525:Surgical Instruments; D013514:Surgical Procedures, Operative / Q000379:methods*; D016896:Treatment Outcome