DALI LDL-apheresis: anticoagulation with r-hirudin in a patient with heparin-induced thrombocytopenia (HIT II)

Int J Artif Organs. 2000 Sep;23(9):637-41.

Abstract

A 50-year old male patient with familial hypercholesterolemia and hyperlipoproteinemia (a), who underwent low density lipoprotein-apheresis treatment developed heparin-induced thrombocytopenia type II (HIT II). Because heparin is contraindicated in patients with HIT, an alternative LDL-apheresis system and modified anticoagulation regimen was necessary. Treatment was changed to a new system called DALI (direct adsorption of lipids). After confirmation of the diagnosis HIT II, DALI LDL-apheresis was carried out with recombinant-hirudin (lepirudin) and citrate in order to prevent hypercoagulability. Efficient LDL-apheresis therapy with minimum therapeutic blood levels of lepirudin (1.4 mg/dl) was achieved with an initial intravenous bolus of 0.114 mg/kg of lepirudin followed by continuous lepirudin infusion of 0.350 mg/h. Thrombin-antithrombin III complex production was well controlled and other hemostatic markers showed no abnormalities. LDL-cholesterol and lipoprotein(a) concentrations were effectively reduced. R-hirudin offers a novel anticoagulation strategy and is, at present, the only alternative for patients with HIT II requiring LDL-apheresis on a regular basis.

Publication types

  • Case Reports

MeSH terms

  • Antithrombins / administration & dosage*
  • Blood Component Removal / methods*
  • Heparin / adverse effects*
  • Hirudins / administration & dosage*
  • Humans
  • Hyperlipoproteinemia Type II / therapy*
  • Hyperlipoproteinemias / therapy*
  • Injections, Intravenous
  • Lipoproteins, LDL / blood*
  • Male
  • Middle Aged
  • Recombinant Proteins / administration & dosage
  • Thrombocytopenia / chemically induced*
  • Thrombocytopenia / complications

Substances

  • Antithrombins
  • Hirudins
  • Lipoproteins, LDL
  • Recombinant Proteins
  • Heparin