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 the case of heparin, stopping the drug alone may be enough to reverse the toxic effects because of the drug's short half-life (1 to 2 hours). - In severe cases IV injection of protamine sulfate ( ANTIDOTE) is indicated. -1 mg of protamine can reverse the effects of 100 units of heparin.