Pulseless electrical activity (PEA) is a condition where the heart has electrical activity, but there is no detectable pulse. Some synonyms for PEA include electromechanical dissociation (EMD), non-palpable pulse, and cardiac standstill. Another similar term is asystole, which is the absence of any electrical activity in the heart. These terms are often used interchangeably in medical settings, but the specific diagnosis and treatment may vary depending on the underlying cause. PEA is a life-threatening condition that requires immediate treatment, including cardiopulmonary resuscitation (CPR) and advanced life support interventions. Rapid and accurate diagnosis of PEA is crucial for successful treatment and outcomes.