Pulseless electrical activity (PEA), also known as electromechanical dissociation, is a clinical condition characterized by unresponsiveness and impalpable pulse in the presence of sufficient electrical discharge. A lack of ventricular impulse often points to the absence of ventricular contraction, but the contrary is not always true. It means that the electrical activity is pertinent, but not sufficient, condition for contraction. In the case of cardiac arrest, the organized ventricular electrical activity does not usually follow sufficient ventricular response. The word “sufficient” is being used to describe a degree of ventricular mechanical activity that is adequate to generate a palpable pulse. Pulseless electrical activity does not necessarily mean the lack of mechanical activity. There can be ventricular contractions and detectable pressures in the aorta, which are also known as pseudo-PEA.[1] True pulseless electrical activity is a state in which cardiac contractions are lacking in the presence of coordinated electrical impulses. Pulseless electrical activity can include a number of organized cardiac rhythms that may be supraventricular in origin, sinus versus non sinus, or ventricular in origin such as accelerated idioventricular or escape. An impalpable pulse should not always be taken as a pulseless electrical activity because it may be due to severe peripheral vascular abnormality.[2][3][4]