title: Ultrasonically activated shears in gastrectomy for large gastric cancers.
abstract: OBJECTIVE
  High-frequency ultrasound energy was introduced in gastrointestinal surgery to improve dissection and coagulation. We assessed the safety and efficacy of ultrasonic dissection compared with standard electrosurgery in gastrectomy for large gastric cancers, which is associated with high morbidity.
  
  
  METHODS
  The subjects of this retrospective study were 52 patients who underwent gastrectomy for gastric cancers, > or =7 cm in diameter. Gastrectomy was performed with ultrasonically activated shears (UAS) between January 2005 and June 2006 (UAS group, n = 26) and with standard electrosurgery between July 2003 and December 2004 (control group, n = 26). We compared morbidity, operating time, and intraoperative blood loss between the two groups.
  
  
  RESULTS
  The mean operating time and intraoperative blood loss were significantly lower in the UAS group than in the control group. Morbidity in the UAS group was also lower, but the difference was not significant.
  
  
  CONCLUSIONS
  Our findings showed that UAS gastrectomy was safe, with significantly shorter operating times and less intraoperative blood loss than standard electrosurgery.
authors.affiliation: Department of Gastrointestinal and Pediatric Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu, Mie, Japan.
authors.forename: Yasuhiko
authors.initials: Y
authors.lastname: Mohri
authors.forename: Hitoshi
authors.initials: H
authors.lastname: Tonouchi
authors.forename: Koji
authors.initials: K
authors.lastname: Tanaka
authors.forename: Masaki
authors.initials: M
authors.lastname: Ohi
authors.forename: Yuuki
authors.initials: Y
authors.lastname: Koike
authors.forename: Yuuki
authors.initials: Y
authors.lastname: Morimoto
authors.forename: Chikao
authors.initials: C
authors.lastname: Miki
authors.forename: Masato
authors.initials: M
authors.lastname: Kusunoki
mesh_terms: D000230:Adenocarcinoma / Q000601:surgery*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016063:Blood Loss, Surgical / Q000517:prevention & control*; D004598:Electrosurgery / Q000379:methods; D005260:Female; D005500:Follow-Up Studies; D005743:Gastrectomy / Q000379:methods*; D006488:Hemostasis, Surgical / Q000379:methods*; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D013274:Stomach Neoplasms / Q000601:surgery*; D013997:Time Factors; D016896:Treatment Outcome; D014465:Ultrasonics