| Hypersensitivity to Tinzaparin, Cerebrovascular hemorrhage or other active Haemorrhage (except disseminated intravascular coagulation), Cerebral Aneurysm, severe and uncontrolled Hypertension (risk of Cerebral Haemorrhage), Severe Gastric or Duodenal ulcer, unless it is the reason for surgery, Acute bacterial Endocarditis, Diabetic Retinopathy, Positive in vitro aggregation test in presence of Tinzaparin in patients with a history of Heparin-associated Thrombocytopenia |