title: Bloodless liver resection using needle arrays under alternating electromagnetic fields.
abstract: OBJECTIVE
  Hemostasis is a major difficulty associated with hepatectomies. The authors designed a new thermal surgery system to reduce blood loss.
  
  
  METHODS
  The newly designed system consists of an alternating magnetic field generator and stainless steel needle arrays with thermosensitive bands. Lanyu pigs were used: 4 for the Kelly crushing method and 4 for the newly designed method. The procedures used were S4-S5 segmentectomies or left lateral segmentectomies, after which the amount of blood loss and operation times were compared. The pigs were observed for 4 weeks, after which liver pathologies were studied.
  
  
  RESULTS
  The blood loss in the method proposed by the authors was almost 0 mL, whereas with the Kelly crushing method it was 116 +/- 35 mL. The method proposed in this study can save 15 to 25 minutes of operation time. The resected liver margins exhibited prominent apoptosis and fibrotic change in the remnant livers.
  
  
  CONCLUSIONS
  The method proposed is a novel new way of performing thermal surgery.
authors.affiliation: National Cheng Kung University, Tainan, Taiwan.
authors.forename: Yan-Shen
authors.initials: YS
authors.lastname: Shan
authors.forename: Roberto
authors.initials: R
authors.lastname: Zuchini
authors.forename: Hung-Wen
authors.initials: HW
authors.lastname: Tsai
authors.forename: Pin-Wen
authors.initials: PW
authors.lastname: Lin
authors.forename: Gwo-Bin
authors.initials: GB
authors.lastname: Lee
authors.forename: Xi-Zhang
authors.initials: XZ
authors.lastname: Lin
mesh_terms: D000818:Animals; D016063:Blood Loss, Surgical / Q000517:prevention & control*; D004574:Electromagnetic Fields; D006498:Hepatectomy / Q000295:instrumentation*; D008099:Liver / Q000473:pathology / Q000601:surgery*; D008280:Magnetics / Q000295:instrumentation*; D008297:Male; D023421:Models, Animal; D009339:Needles; D013552:Swine