1. HIT/HITT and alternative anticoagulation: current concepts
E Pravinkumar, N.R. Webster 
British Journal of Anaesthesia 
Volume 90, Issue 5, Pages (May 2003)
DOI: /bja/aeg063
Copyright © 2003 British Journal of Anaesthesia Terms and Conditions

2. Fig 1
Mechanism of action of heparin–PF4–IgG complex and the vicious circle that leads to thrombus formation and platelet destruction. IgG=immunoglobulin G; PF4=platelet factor 4; GP=glycoprotein.
British Journal of Anaesthesia  , DOI: ( /bja/aeg063)
Copyright © 2003 British Journal of Anaesthesia Terms and Conditions

3. Fig 2
Actions of thrombin. NO=nitric oxide; PgI2=prostaglandin I2; t-PA=tissue plasminogen activator. Adapted with permission from Fuster and Verstraete.22
British Journal of Anaesthesia  , DOI: ( /bja/aeg063)
Copyright © 2003 British Journal of Anaesthesia Terms and Conditions