Key Arrhythmia Review: ECG & Action • Ventricular Tachycardia (VT): Wide-complex tachycardia from ventricles. Assess for pulses immediately; unstable VT requires cardioversion. • Ventricular Fibrillation (V-Fib): Chaotic ventricular activity, no cardiac output. Immediate defibrillation is critical. • Atrial Fibrillation (AF): Irregularly irregular rhythm, absent P waves. Focus on rate control & stroke risk stratification (CHADS₂-VASc). • Supraventricular Tachycardia (SVT): Regular, narrow-comple

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