<prompt> True about DC shock treatment in AF:Synchronized 50 JoulesSynchronized 250 JoulesUnsynchronized 50 JoulesUnsynchronized 250 Joules  <response>: Ans. A. Synchronized 50 Joulesa. In Atrial fibrillationb. Initial Monophasic Synchronize DC shock of 50-100Joulesc. Initial Biphasic 150J synchronized upto 200 synchronized. 