Ventricular fibrillation is not provoked by chest compression during post-shock organized rhythms in out-of-hospital cardiac arrest

VF recurred following successful shocks in 52% of pts. With asystole VF recurred frequently during CC. However, during post-shock OR VF recurred unrelated to CC in most instances. Thus, resumption of CC immediately after shocks that restore an OR is unlikely to provoke recurrent VF, and resumption of CC need not be delayed.