title: Topical cooling assisted hepatic resection of segment 7 and 8 oriented by en-bloc interruption of the targeted portal pedicles.
abstract: OBJECTIVE
  The crucial points of hepatic segmentectomy include an accurate mapping of proposed segment(s) to be resected and minimization of intra-operative blood loss. This study reports a surgical technique of hepatic resection for segment 7 and 8, and a benefit of supplemental use of topical cooling during consecutive right hepatic inflow occlusion.
  
  
  METHODS
  From January 1993 to December 1996, ten hepatocellular carcinoma patients with pathologic livers underwent hepatic segmentectomy for segment 7 and 8. The mapping of the target segments was guided by en-bloc test occlusion of the relevant portal pedicles and subsequent discoloration, often after the opening hilum method. Of these, five tumors were resected with topical cooling by ice slush seeding during consecutive right inflow occlusion (cooling group) and the remainder without cooling (Normothermic group). In the normothermic group, inflow occlusion was carried out by cyclic clamping and unclamping method.
  
  
  RESULTS
  The inflow occlusion time was 54 +/- 9.4 min in the cooling group, much longer than in the normothermic group. Although the post-operative peak transaminase values were twice as high as those in the normothermic group, the blood loss was significantly less, and there was no detrimental effect of prolonged, consecutive ischemia on the other intra- and post-operative data.
  
  
  CONCLUSIONS
  En-bloc taping of the target portal pedicles with or without the opening hilum method is useful in the mapping of segments, and the use of topical cooling is beneficial in prolonged inflow occlusion during complicated right-sided segmentectomy.
authors.affiliation: First Department of Surgery, Hyogo College of Medicine, Nishinomiya, Japan. snyamana@hyo-med.ac.jp
authors.forename: N
authors.initials: N
authors.lastname: Yamanaka
authors.forename: J
authors.initials: J
authors.lastname: Yamanaka
authors.forename: T
authors.initials: T
authors.lastname: Tanaka
authors.forename: W
authors.initials: W
authors.lastname: Tanaka
authors.forename: C
authors.initials: C
authors.lastname: Yasui
authors.forename: T
authors.initials: T
authors.lastname: Ando
authors.forename: E
authors.initials: E
authors.lastname: Okamoto
mesh_terms: D000328:Adult; D000368:Aged; D016063:Blood Loss, Surgical / Q000517:prevention & control*; D005260:Female; D006498:Hepatectomy / Q000379:methods*; D006801:Humans; D008113:Liver Neoplasms / Q000098:blood supply / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D011168:Portal System; D013696:Temperature