Introduction: The identification of the rhythm in the care of the patient with cardiopulmonary arrest (CA), (shockable and non-shockable) is fundamental for the reversal of the condition. In this context, echocardiography (ECHO) allows real-time recognition of myocardial movement and helps to identify the potential reversible cause of CA in non-shockable rhythms such as PEA and Asystole. Objective: to present an update of the scientific evidence about the use of ECHO during CA. Method: integrative literature review, in the Medical Literature Analysis and Retrieval System Online database, using the descriptors "Echocardiography" and "Cardiac Arrest", with original articles published between 2019 and 2021. Results: the use of ECHO during CRP allows visualizing the movement of heart chambers and valves, blood flow and myocardial contractility, helping to identify the cardiac rhythm and, in turn, the cause of the shock. The use of transthoracic echocardiography (TTE), a non-invasive method, requires pauses in che