Use your online local resources for reversal of anti-coagulation that are available on your hospital intranet.
Haematology can assist you in how to reverse coagulation but typically cardiology should be consulted regarding risks/ benefits of reversal in patients in atrial fibrillation and/or mechanical valves.
An update of consensus guidelines for warfarin reversal
Huyen A Tran, Sanjeev D Chunilal, Paul L Harper, Huy Tran, Erica M Wood and Alex S Gallus, on behalf of the Australasian Society of Thrombosis and Haemostasis. Med J Aust 2013; 198 (4): 198-199. DOI: 10.5694/mja12.10614. Abstract available from https://www.ncbi.nlm.nih.gov/pubmed/23451962