IRCT20190608043836N1 IRCT 2019-08-22 Sairan medical company Inferiority of ZOLL and SAIRAN Electroshocks Comparing Effectiveness and Safety of Synchronized Electrical Cardioversion by ZOLL and SAIRAN Electroshocks in Patients with Atrial Fibrillation: A Non-Inferiority Double Blinded Randomized Clinical Trial 2019-09-23 anticipated 670 Complete https://irct.ir/trial/40051 interventional Randomization: Randomized, Blinding: Double blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment, Randomization description: Block Randomization (block size=4) is used for random allocation of patients. Using RANDBETWEEN command in excell program, we determined sequence of blocks. With a sample and block size 670 and 4, respectively, RANDBETWEEN will be run for 168 times. After determining sequence of all blocks, a patient-specific 5-digits code will be written on a paper. Then paper is folded and put in a dark and thick sealed envelop. Envelops will be numbered from 1 to 670 according to blocks sequences. The meaning of 5-digits code will not be clear for patients so we will have concealment. only assessors (physician) who open envelop will be informed that how they distinguish the brand of device (SaIran or Zoll). A trained and blind nurse will preserve sealed envelops securely and deliver them to assessor (physician) one at the time according to numbering on it. For example, when first patient enters to study, the first envelope, numbered 1 on it, is delivered by the responsible nurse to the physician. Physician will open it and select type of electroshok device for patient based on 5-digits code. This work will be repeated until last patient, Blinding description: There is no possibility for blinding of assessors (physicians) due to the fact that the Zoll is known to all. However, patients will be blinded via masking device brand. In addition, we will blind data analyser. So this will be a double blinded study. N/A Atrial Fibrillation. Intervention 1: Intervention group: Group treated by Electroshock of Sa-Iran. Before the shock, the first part of the questionnaire, which includes demographic data and risk factors, is completed by the patient's nurse. Then patient is allocated to Sa-Iran or Zoll group. After randomizations, the patient is prepared for the shock. The patient's nurse completes the second part of the questionnaire, which includes shock data (number of shocks performed to achieve success, number of used paddles, etc.) under supervision of physician. Patients is followed up at least for 24 hours after procedure in hospital. Patient's nurse completes the third part of the questionnaire, which includes complications data (thrombotic events, Burn wound status, etc.) in 12 and 24 hours after performing shock. Intervention 2: Control group: group treated by Electroshock of Zoll. Before the shock, the first part of the questionnaire, which includes demographic data and risk factors, is completed by the patient's nurse. Then patient is allocated to Sa-Iran or Zoll group. After randomizations, the patient is prepared for the shock. The patient's nurse completes the second part of the questionnaire, which includes shock data (number of shocks performed to achieve success, number of used paddles, etc.) under supervision of physician. Patients is followed up at least for 24 hours after procedure in hospital. Patient's nurse completes the third part of the questionnaire, which includes complications data (thromboembolic events, Burn wound status, etc.) in 12 and 24 hours after performing shock. No - There is not a plan to make this available Justification or reason for not sharing IPD is There is not more information