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A sustained decrease in plasma fibrinolytic potential following partial liver resection or pancreas resection.

Simone F Kleiss1, Jelle Adelmeijer1, Joost C M Meijers2

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Partial hepatectomy and pancreas resection cause a temporary decrease in blood clot breakdown (hypofibrinolysis), increasing thrombosis risk. This state, linked to altered anticoagulant protein levels, resolves over time but may persist longer after liver surgery.

Keywords:
FibrinolysisHepatectomyPylorus-preserving pancreaticoduodenectomyThrombosis

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Area of Science:

  • Hepatobiliary surgery
  • Thrombosis and hemostasis research
  • Surgical oncology

Background:

  • Partial hepatectomy patients face high venous thrombosis risk despite thromboprophylaxis.
  • Previous studies identified a post-hepatectomy hypercoagulable state.
  • The fibrinolytic system's role after partial hepatectomy was uninvestigated.

Purpose of the Study:

  • To investigate the fibrinolytic status following partial hepatectomy.
  • To compare fibrinolytic changes in liver resection versus pancreas resection patients.
  • To correlate fibrinolytic changes with thrombotic risk.

Main Methods:

  • Assessed plasma fibrinolytic potential and individual protein levels in 17 partial hepatectomy patients.
  • Collected serial perioperative blood samples.
  • Compared results with 10 pancreas resection patients and 24 healthy volunteers.

Main Results:

  • Both surgery types induced a transient hypofibrinolytic state, peaking on post-operative day 3.
  • Increased plasminogen activator inhibitor-1 (PAI-1) was observed on post-operative day 1.
  • Decreased levels of plasminogen, α2-antiplasmin, and TAFI were noted, with slower recovery in liver resection patients.

Conclusions:

  • A post-surgical hypofibrinolytic state, particularly pronounced after partial hepatectomy, contributes to thrombosis risk.
  • Altered ratios of pro- and anti-fibrinolytic proteins may explain the sustained hypofibrinolysis.
  • Combining hypercoagulability and hypofibrinolysis increases thrombotic complications after liver resection.