pulseless electrical activity
Also written as: PEA — pulseless electrical activity
A cardiac arrest rhythm where organized electrical activity is present on ECG but produces no detectable pulse or blood pressure.
Full Definition
Pulseless electrical activity (PEA) is a form of cardiac arrest characterized by organized electrical activity on the electrocardiogram without a palpable pulse or measurable blood pressure. Unlike ventricular fibrillation or ventricular tachycardia, PEA is not shockable and requires identification and treatment of reversible causes. Common causes include hypovolemia, hypoxia, acidosis, electrolyte abnormalities, tension pneumothorax, cardiac tamponade, and massive pulmonary embolism. Treatment focuses on high-quality CPR and addressing underlying precipitating factors.
Usage
Usage note: Commonly abbreviated as PEA; avoid the outdated term 'electromechanical dissociation' in modern documentation.
In Context
- "The code team identified pulseless electrical activity and began searching for reversible causes." — Resuscitation documentation
- "Pulseless electrical activity secondary to massive pulmonary embolism was suspected." — Emergency medicine consultation