IRCT20180129038549N9 IRCT 2018-10-04 Esfahan University of Medical Sciences Ultrasound in cardiac arrest Accuracy of point-of-care focused sonography in predicting outcome of resuscitation in cardiac arrest patients 2017-12-11 anticipated 100 Complete https://irct.ir/trial/34168 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Diagnostic, Randomization description: Block randomization with Table of random numbers. 3 Cardiac arrest. Intervention 1: Intervention group: Sonography during resuscitation in the check pulse period. During resuscitation, an ultrasound curved array probe (2–4 MHz) placed in the subxiphoid area. The resuscitation team leader will be informed the ultrasound performer 5 seconds before the check pulse so that he takes a four-chamber view of the heart within 10 seconds of checking the pulse. In the first time, cardiac organized contraction and pericardial effusion are checked and recorded. In the second check pulse, the presence of hypovolemia (right ventricle collapse) and pulmonary embolism (right ventricular enlargement with left ventricular collapse) is checked and recorded, and in the third check pulse, a pneumothorax is checked in the event of a strong clinical suspicion of it. Intervention 2: Control group: Performing a classic cardiopulmonary resuscitation. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is There is no extra data