Nakon što je indicirana elektrokardioverzija potrebna je adekvatna priprema bolesnika – psihička i fizička, priprema defibrilatora i pribora. Priprema bolesnika potrebna je prije postupka, praćenje bolesnika tijekom i nakon postupka elektrokardioverzije. Bolesnik nakon usmenog pristanka mora obavezno potpisati informirani pristanak za primjenu anestezije i intervenciju - elektrokardioverziju. Za cijeli postupak potreban je  tim koji se sastoji od liječnika kardiologa i anesteziologa te kardiološke medicinske sestre i anesteziološkog tehničara.

Preporučuje se da bolesnici budu primljeni u bolnicu na kardiološki odjel ili jednicu intezivnog liječenja (ako su hemodinamski nestabilni) i da budu monitorirani prije, tijekom i nakon elekrokardioverzije.
Oko 90% elektrokardioverzija je uspješno.
Promjene u načinu života su preporuke za liječenje nepravilnog rada srca: odvikavanje od pušenja, kofeina, alkohola, izbjegavanje fizičke aktivnosti koja do vodi do aritmija, zdrava prehrana, održavanje normalne tjelesne težine i izbjegavanje lijekova npr. koji sadrže stimulans i obavezno redovite kontrole liječnika te samo kontrole krvnog tlaka i pulsa.
Šanse za uspješnu kardioverziju i održavanje sinusnog ritma ritma opadaju s dužim trajanjem fibrilacije a posebno su niske ako je fibrilacija trajala dulje od godinu dana. U takvim slučajevima važnost treba pridodati kontroli srčane frekvencije i antikoagulantnoj terapiji.
Prikladna oprema i educirano medicinsko osoblje su glavni uvjeti uspješne i sigurne kardioverzije.

Cardioversion  the process by which the cardiac rhythm translates to sinus rhythm, stroke direct current synchronized with the ventricular complex of th electrocardiogram (R prong of the QRS complex). If the delivery of electric strock occurs during the T-wave can cause ventricular fibrillation (VF).
Defibrillators to be used for cardioversion have the kej that activates thy synchronization with the R prong.
Indication is in atrias fibrillation,supraventricular tachycardia (SVPT) refractory to treatment and procedures, persistent ventricular tachycardia (VT) refractoryto drug therapy. To stable elective patiens cardioversion runs performed after anticoagulation therapy with warfarin by 3-4 weeks and can be done first if there is hemodynamic instability in patiens, ancertainty in the antiarrhythmic drugs.
After the indicated cardioversion requiresdequate patient preparation – mental and physical, preparation defibrillators and accessories.
Priprema patiens is needed before the procedure, monitoring during and after the procedure.
After verbal consent must be required to sign informed consent for the use of anesthetic and intervention – cardioversion.
For whole procedure is actually required coordinated team of doctors cardiologists and anesthesiollogists and nurses and technicians anesthesions.
It is recommeded that pattiens be admitted to the cardiological department or intesive care unit ifthey hemodynamically unstable( and be monitored during and after cardioversion.
About 90% uspije.Change  life style recommendations for treatima irregular hear failure:smoking cessation, avoidance of physical ativities, that lead to arrhythmias, limit salt intake, caffeine, healthy diet, maintaining normal weight, regular control of the cardiologist, regularly taking medication andavoidinis medication eg cough containing stimulant.
The chanes for a successful cardioversion and maintenance of sinus rhytham decreased with longer duration of fibrillation areespecially low if th fibrillation lasted longer than a year. In such cases, the importaned should be added to control hear rate and anticoagulation therapy.
Suitable equipment and traines medical personnel are the main conditions of successful and safe cardioversion.