Fig. 4From: Cardiovascular risk factors differently affect the survival of patients undergoing manual or mechanical resuscitationConnection between first observed rhythm and ratio of return of spontaneous circulation (ROSC). Ventricular fibrillation is a favourable indicator regarding the outcome of resuscitation in both Lucas and manual groups. In the cases of initial asystole, resuscitation by using a Lucas device was significantly more effective. VF: ventricular fibrillation, L: Lucas, PEA: pulseless electrical activity, VT: ventricular tachycardiaBack to article page