title: Preoperative Thromboelastography as a Sensitive Tool Predicting Those at Risk of Developing Early Hepatic Artery Thrombosis After Adult Liver Transplantation.
abstract: BACKGROUND
  Whilst causes of hepatic artery thrombosis (HAT) after liver transplantation (LT) are multifactorial, early HAT (E-HAT) remains pertinent complication impacting on graft and patient survival. Currently there is no screening tool that would identify patients with increased risk of developing E-HAT.
  
  
  METHODS
  We analyzed the native procoagulant state of LT recipients, identified through pretransplant thromboelastographic (TEG) data among other known risk factors, to identify risk factors for E-HAT.
  
  
  RESULTS
  The outcomes of 828 adult patients undergoing LT between 2008 and 2013 were analyzed. Overall, 79 (9.5%) patients experienced HAT, E-HAT was diagnosed in 23, and in the remainder this was "late" HAT. The maximum amplitude (MA) on preoperative TEG was significantly higher in patients diagnosed with E-HAT compared with those who did not (71.2 mm vs 57.9 mm; P < 0.0001). Receiver operating characteristic analysis with the cutoff value for MA of 65 mm or greater returned area under the curve of 0.750 (P < 0.001) predicting E-HAT with a sensitivity of 70%. A total of 7% of patients with an MA of 65 mm or greater went on to develop E-HAT (hazard ratio, 5.28; 95% confidence interval, 2.10-12.29; P < 0.001), whereas only 1.2% patients with an MA less than 65 mm experienced E-HAT.
  
  
  CONCLUSIONS
  Preoperative TEG may reliably identify group of recipients at greater risk of developing E-HAT, and intense surveillance and anticoagulation prophylaxis may avoid this serious complication after LT.
authors: 1 The Liver Unit, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, United Kingdom.2 Department of Anaesthesia, Queen Elizabeth Hospital Birmingham, Edgbaston, Birmingham, United Kingdom.3 Centre for Liver Research, National Institute for Health Research (NIHR) Birmingham Liver Biomedical Research Unit, University of Birmingham, Edgbaston, Birmingham, United Kingdom.4 Department of Medical Statistics, Queen Elizabeth Hospital, Birmingham, United Kingdom.
authors: Firas
authors: F
authors: Zahr Eldeen
authors: Garrett R
authors: GR
authors: Roll
authors: Carlos
authors: C
authors: Derosas
authors: Rajashankar
authors: R
authors: Rao
authors: Muhammad S
authors: MS
authors: Khan
authors: Bridget K
authors: BK
authors: Gunson
authors: James
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authors: Hodson
authors: Hynek
authors: H
authors: Mergental
authors: Ben-Hur
authors: BH
authors: Ferraz-Neto
authors: John
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authors: Isaac
authors: Paolo
authors: P
authors: Muiesan
authors: Darius F
authors: DF
authors: Mirza
authors: Asim
authors: A
authors: Iqbal
authors: M Thamara P R
authors: MT
authors: Perera
mesh_terms: D000328:Adult; D005260:Female; D006499:Hepatic Artery; D006801:Humans; D016031:Liver Transplantation / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012306:Risk; D013916:Thrombelastography; D013927:Thrombosis / Q000175:diagnosis*