PALS

PALS is an American Heart Association certification course and clinical algorithm framework designed for healthcare providers who manage pediatric emergencies. Unlike adults, pediatric cardiac arrest is more commonly due to progressive respiratory failure or shock leading to cardiac arrest, rather than a primary cardiac event (e.g., arrhythmia from coronary disease). Therefore, PALS emphasizes early identification and treatment of respiratory distress/failure and shock states before they progress to cardiopulmonary arrest.

Key components include: - The Pediatric Assessment Triangle (appearance, work of breathing, circulation to skin) for rapid initial evaluation. - Systematic approach: Primary assessment (ABCDE - Airway, Breathing, Circulation, Disability, Exposure), secondary assessment, and diagnostic tests. - Recognition and management of respiratory distress vs. respiratory failure. - Shock recognition (compensated vs. decompensated) and fluid resuscitation strategies. - Specific algorithms for: pulseless arrest (VF/pulseless VT vs. asystole/PEA), bradycardia with a pulse, tachycardia with a pulse (stable vs. unstable, wide vs. narrow complex). - Weight-based drug dosing (e.g., epinephrine 0.01 mg/kg IV/IO for arrest), energy dosing for defibrillation (2 J/kg initial, then 4 J/kg) and cardioversion. - High-quality CPR with age-appropriate compression depth and rate, minimizing interruptions. - Post-cardiac arrest care including targeted temperature management and hemodynamic optimization.

Clinical significance: Pediatric cardiac arrest has different etiologies than adult arrest (respiratory/hypoxic causes predominate over primary cardiac causes), which is why early intervention on the respiratory and circulatory axis is critical. Outcomes for pediatric cardiac arrest remain poor, making prevention through early recognition of the 'PALS' framework a key teaching point. This is tested on Step 2 CK in the context of pediatric emergency management, and understanding the differences between adult ACLS and pediatric PALS algorithms (e.g., drug doses, defibrillation energy, causes of arrest) is high-yield.