A patient on warfarin therapy can be taken for elective surgery if INR is ?

.LOW MOLECULAR WEIGHT HEPARIN (LMWH) It is a commercially prepared heparin with a molecular weight of 4,000 to 6,500. * Enoxaparin. * Dalteparin. * Parnaparin. * Reviparin. * Fraxiparin.Advantages includes * Have a longer duration of action - once a day * Have a better anticoagulant effect * Less interaction with platelets * Less antigenic * Usage is easier and more acceptable * Monitoring is not necessary.Indications for therapy includes 1. In DVT after cessation of heparin for maintenance therapy. 2. After valve replacement surgery. To achieve adequate anticoagulant effect and to prevent thromboembolic episodes the INR has to be maintained within 2-3. ref:SRB&;s manual of surgery,ed 3,pg no 207