Antiphospholipid Syndrome


Hypercoagulable state that can be idiopathic or associated w\ SLE or scleroderma



  • Recurrent arterial \ venous thrombosis (risk of PE)
  • Recurrent fetal loss (bc of anticardiolipin Abs)
  • Thrombocytopenia
  • Livedo reticularis



  • Best initial test: mixing study -> aPTT will remain elevated
  • Presence of lupus anticoagulant, anticardiolipin, or both



Life-long anti-coagulation


Download the PDF version: here


  • Step up to medicine
  • Pocket medicine
  • Toronto notes

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