Differences in clinical efficacy between unfractionated heparin (UFH) and low molecular weight heparin (LMWH) but also between several LMWH preparations are a hot topic in research due to differences in study results: enoxaparin proved superiority over UFH (1,2), whereas dalteparin and nadroparin showed only equivalence (3,4). As there is a lack of trials directly comparing LMWHs, some investig...

Resistance of fibrin-bound thrombin to inactivation by the heparin/antithrombin III complex is considered a limitation in the use of heparin as an antithrombotic agent. Intimatan (dermatan 4,6-di-O-sulfate) is a heparin cofactor II agonist that inhibits both free and bound forms of thrombin. The present study examines the hypothesis that Intimatan prevents thrombotic occlusion in response to va...

Little is known about the differences between unfractionated heparin (UFH) and low molecular weight heparin (LMWH) with regard to their effects on coagulation activity during treatment for pulmonary embolism. The objective of this study was to compare UFH and LMWH (dalteparin) in the early treatment of pulmonary embolism in terms of control of coagulation markers and perfusion abnormalities. Th...

BACKGROUND A single bolus dose of LMW heparin at the start of haemodialysis effectively prevents clot formation in the dialyser and bubble trap. However, there are few studies on the appropriate dosage of LMW heparins in haemodialysis. Therefore we examined the relationship between the anticoagulant effect of dalteparin and clinical clotting during haemodialysis. METHODS We performed an open,...

We conducted a retrospective, literature-based decision analysis to compare the cost-effectiveness of conventional low-dose heparin, dalteparin, and intermittent pneumatic compression (IPC) as thromboembolic prophylaxis to a no-prophylaxis option in patients at moderate risk of developing thromboembolic complications after major elective abdominal surgery. The analysis was conducted through an ...

TO THE EDITOR: The well-performed and important FRAGMATIC (Dalteparin in Preventing Blood Clots in Patients With Lung Cancer) trial reported by Macbeth et al concluded that the addition of prophylactic doses of the lowmolecular weight heparin (LMWH) dalteparin for 24 weeks to standard of care in patients with lung cancer did not improve overall survival; the rate of venous thromboembolism was s...

The effectiveness of heparin for thromboprophylaxis during microvascular free flap transfer is uncertain. The purpose of this meta-analysis was to determine the effect of heparin on the prevention of flap loss in microsurgical free flap transfer.A search of PubMed, Cochrane databases, and Google Scholar using combinations of the search terms heparin, free flap, flap loss, free tissue transfer w...

OBJECTIVE To determine the incidence of deep vein thrombosis (DVT)in patients undergoing spinal surgeries receiving prophylactic doses of Deltaparin in a single center in central Iran. METHOD This cross-sectional study was conducted in Shariatee hospital of Isfahan during a 12-month period. We included all the patients undergoing elective spinal surgeries in our center during the study period...