The below are open source tools and mostly available on GNU/Linux, and can run on other platforms too: 1  GeoGebra - open source software for dynamic geometry, algebra and calculus for middle/high school and college. Exports interactive web pages.  Kig[1] A GUI based geometry editor.
â¢ Before surgery, wait at least 24 hours after the last dose of LMW heparin is administered before a spinal/epidural catheter is placed. â¢ After surgery, when there is adequate surgical site hemostasis, for twice daily dosing, wait at least 24 hours after catheter removal before resuming therapeutic-dose LMW heparin.
In patients with persistent AF where cardioversion cannot be postponed for 3 weeks: heparin should be given and the cardioversion performed, and warfarin should then be given for a minimum of 4 weeks post cardioversion Anticoagulation should be continued for the long term in patients with AF who have undergone cardioversion where there is a high risk of AF recurrence or where it is there is a high stroke risk defined as: 1  previous ischaemic stroke/TIA or thromboembolic event.