title: Randomized clinical trial of hepatectomy using intermittent pedicle occlusion with ischaemic intervals of 15 versus 30 minutes.
abstract: BACKGROUND
  The optimal ischaemic interval during hepatectomy with intermittent pedicle occlusion (IPO) remains to be established. The aim of the present randomized clinical trial was to compare the short-term outcome of hepatectomy using IPO with an ischaemic interval of 15 versus 30 min.
  
  
  METHODS
  Between October 2002 and September 2004, 108 consecutive patients scheduled to undergo hepatectomy without bilioenterostomy were enrolled. During liver transection, IPO was performed with an ischaemic interval of either 15 min with 5 min of reperfusion (standard group, SG) or 30 min with 5 min of reperfusion (prolonged group, PG). After randomization and subsequent exclusion of certain patients, 44 patients in the SG and 48 in the PG were analysed.
  
  
  RESULTS
  The mean(s.d.) bilirubin ratio (serum total bilirubin level on day 2 after operation divided by the preoperative level) was 1.6(0.8) in the SG and 1.7(0.8) in the PG (P = 0.874). The transection area per unit transection time was significantly greater in the latter group (median (range) 1.0 (0.4-2.1) versus 0.8 (0.0-1.5) cm(2)/min; P = 0.046).
  
  
  CONCLUSIONS
  There was no difference in the bilirubin ratio when IPO was carried out for 30 or 15 min. By extension of IPO to 30 min, a greater resection area per unit time was possible with preservation of remnant liver function.
authors.affiliation: Hepatobiliary and Pancreatic Surgery Division, National Cancer Centre Hospital, Tokyo, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Esaki
authors.forename: T
authors.initials: T
authors.lastname: Sano
authors.forename: K
authors.initials: K
authors.lastname: Shimada
authors.forename: Y
authors.initials: Y
authors.lastname: Sakamoto
authors.forename: Y
authors.initials: Y
authors.lastname: Takahashi
authors.forename: K
authors.initials: K
authors.lastname: Wakai
authors.forename: T
authors.initials: T
authors.lastname: Kosuge
mesh_terms: D000328:Adult; D000368:Aged; D001663:Bilirubin / Q000097:blood*; D004621:Embolization, Therapeutic / Q000379:methods; D005260:Female; D006498:Hepatectomy / Q000379:methods*; D006801:Humans; D019194:Ischemic Preconditioning / Q000379:methods; D008099:Liver / Q000098:blood supply*; D008113:Liver Neoplasms / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D013997:Time Factors
chemical_list: D001663:Bilirubin