RT Journal Article SR Electronic T1 Anticoagulation before cardioversion of acute atrial fibrillation in the emergency department JF Emergency Medicine Journal JO Emerg Med J FD BMJ Publishing Group Ltd and the British Association for Accident & Emergency Medicine SP 275 OP 275 DO 10.1136/emj.2005.023531 VO 22 IS 4 A1 Potier, Katherine A1 Parris, Richard YR 2005 UL http://emj.bmj.com/content/22/4/275.1.abstract AB A short cut review was carried out to establish whether anticoagulation is indicated prior to emergency department cardioversion of a patient with acute onset atrial fibrillation. 54 papers were found using the reported search, of which none presented any evidence to answer the clinical question. It is concluded that there is no evidence available to answer this question. Further research is needed.