Essential guide to the four primary ECG rhythms in cardiac arrest, aligned with ACLS protocols. Shockable Rhythms · VF: Chaotic, disorganized electrical activity. → Defibrillate. · Pulseless VT: Wide-complex tachycardia (>150 bpm). → Defibrillate. Non-Shockable Rhythms · PEA: Organized ECG rhythm without a pulse. → CPR Find Cause. · Asystole: Absence of electrical activity (confirm in ≥2 leads). → CPR Epinephrine. #ACLS #CardiacArrest #ECG #MedEd #cardiology | Abdallah Othman

ECG interpretation involves systematically analyzing the waveforms and intervals to assess heart rhythm, rate, and overall electrical activity. This includes evaluating the P-wave (atrial depolarization), PR interval, QRS complex (ventricular depolarization), ST segment, T-wave (ventricular repolarization), and QT interval. A normal ECG typically shows a regular heart rate (60-100 bpm), normal P-waves, a PR interval between 120-200 ms, a QRS complex duration less than 120 ms, and a normal QT int