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Low-molecular-weight heparin (LMWH) is a class of anticoagulant medications. [1] They are used in the prevention of blood clots and, in the treatment of venous thromboembolism ( deep vein thrombosis and pulmonary embolism ), and the treatment of myocardial infarction .
Unfractionated heparin is used in hemodialysis. Compared to low-molecular-weight heparin, unfractionated heparin does not have prolonged anticoagulation action after dialysis and is low cost. However, the short duration of action for heparin would require it to maintain continuous infusion to maintain its action.
The affinity of unfractionated heparin and the various LMWHs for Factor Xa varies considerably. The efficacy of heparin-based anticoagulants increases as selectivity for Factor Xa increases. LMWH shows increased inactivation of Factor Xa compared to unfractionated heparin, and fondaparinux, an agent based on the critical pentasacharide sequence ...
Traditionally this was heparin, but several of the DOACs are licensed for treatment without initial heparin use. [42] If heparin is used for initial treatment of VTE, fixed doses with low-molecular-weight heparin (LMWH) may be more effective than adjusted doses of unfractionated heparin (UFH) in reducing blood clots. [44]
Pulmonary embolism may be preventable in those with risk factors. People admitted to the hospital may receive preventative medication, including unfractionated heparin, low molecular weight heparin (LMWH), or fondaparinux, and anti-thrombosis stockings to reduce the risk of a DVT in the leg that could dislodge and migrate to the lungs. [83]
Fondaparinux is a synthetic pentasaccharide factor Xa inhibitor. Fondaparinux binds antithrombin and accelerates its inhibition of factor Xa.. Apart from the O-methyl group at the reducing end of the molecule, the identity and sequence of the five monomeric sugar units contained in fondaparinux is identical to a sequence of five monomeric sugar units that can be isolated after either chemical ...
Dalteparin is a low molecular weight heparin.It is marketed as Fragmin.Like other low molecular weight heparins, dalteparin is used for prophylaxis or treatment of deep vein thrombosis and pulmonary embolism to reduce the risk of a stroke or heart attack. [2]
The ability to have a shorter stay in hospital came with the advent of low molecular weight heparin (LMWH) and the ability of self-injecting subcutaneously at home. Biotechnology developments then paved way for the first successful synthetic anticoagulants including hirudin . [ 6 ]