title: Wash-out of the non-heart-beating donor liver: a matter of flush solution and temperature?
abstract: OBJECTIVE
  Ischemically damaged donor livers are prone to graft non-function. This can in part be explained by a suboptimal wash-out during procurement. An enriched machine perfusion (MP) preservation solution for livers, named Polysol, was developed. The aim of this study was to investigate the type of flush solution, temperature and anticoagulant content on the wash-out of the non-heart-beating donor (NHBD) rat liver.
  
  
  METHODS
  Rat livers were flushed after 30 min warm ischemia. After excision, livers were reperfused at 37 degrees C, with analysis of damage and function, concerning (1) solutions (University of Wisconsin (UW), histidine-tryptophan-ketoglutarate (HTK) and Polysol); (2) temperature (4 degrees C, 18 degrees C and 37 degrees C); (3) addition of heparin and (4) wash-out followed by 24 h MP.
  
  
  RESULTS
  (1) Reperfusion results were inferior in the UW group; (2) less damage and improved function were seen after wash-out using Polysol at 37 degrees C; (3) No effects were seen of the addition of heparin to Polysol; (4) MP after wash-out using HTK resulted in more liver damage and decreased liver function as compared with wash-out using Polysol.
  
  
  CONCLUSIONS
  Polysol is applicable as a flush solution for the NHBD liver, resulting in equal to better wash-out as compared with UW and HTK. The best temperature for this NHBD wash-out is 37 degrees C.
authors.affiliation: Surgical Laboratory, Department of Surgery, Academic Medical Center, AZ Amsterdam, The Netherlands.
authors.forename: Maud
authors.initials: M
authors.lastname: Bessems
authors.forename: Benedict M
authors.initials: BM
authors.lastname: Doorschodt
authors.forename: Peter S
authors.initials: PS
authors.lastname: Albers
authors.forename: Alfred J
authors.initials: AJ
authors.lastname: Meijer
authors.forename: Thomas M
authors.initials: TM
authors.lastname: van Gulik
mesh_terms: D000241:Adenosine; D000493:Allopurinol; D000818:Animals; D005947:Glucose; D005978:Glutathione; D006493:Heparin; D007328:Insulin; D008099:Liver; D016031:Liver Transplantation; D008297:Male; D008353:Mannitol; D009926:Organ Preservation; D019188:Organ Preservation Solutions; D010477:Perfusion; D011189:Potassium Chloride; D011343:Procaine; D011887:Raffinose; D051381:Rats; D017208:Rats, Wistar; D013696:Temperature; D013997:Time Factors; D014019:Tissue Donors
chemical_list: C039984:Bretschneider cardioplegic solution; D007328:Insulin; D019188:Organ Preservation Solutions; C055206:University of Wisconsin-lactobionate solution; C504758:polysol solution; D008353:Mannitol; D011343:Procaine; D000493:Allopurinol; D011189:Potassium Chloride; D006493:Heparin; D005978:Glutathione; D005947:Glucose; D000241:Adenosine; D011887:Raffinose