The 12-lead ECG is a foundational tool for evaluating cardiac rhythm, conduction, ischemia, chamber enlargement, and structural heart disease. In this episode, we review a structured approach to ECG interpretation, including cardiac axis, PR/QRS/QT intervals, bundle branch blocks, left ventricular hypertrophy, and practical pattern recognition. THIS TRANSLATES MUCH BETTER TO VIDEO FORMAT, LINK TO VIDEO BELOW. Topics covered include: • How to approach the 12-lead ECG • Rate, rhythm, and regularity • P waves and atrial activity • PR interval interpretation • QRS duration and morphology • QT interval and QTc assessment • Cardiac axis interpretation • Left axis deviation and right axis deviation • Bundle branch blocks • Right bundle branch block • Left bundle branch block • Fascicular blocks and conduction disease • Left ventricular hypertrophy • Voltage criteria and repolarization changes • ST segments and T waves • Practical ECG interpretation workflow • Common pitfalls in ECG interpretation Watch the full video on YouTube: https://www.youtube.com/watch?v=zKYF-LLM1u8 📚 Join the WhiteBoard Medicine Patreon Community https://www.patreon.com/WhiteBoardMedicine Join a growing emergency medicine, critical care, and resuscitation education community built around high-yield clinical learning. Patreon members get access to: • Comprehensive Study Guides • Bedside One-Pagers • Clinical Reviews • Mini-Courses • Practice Questions • Ad-Free Videos • Structured Topic Collections 🌐 WhiteBoard Medicine Website Explore our growing library of critical care and emergency medicine content: https://www.whiteboardmedicine.com ⚠️ Educational Disclaimer: This content is intended for educational purposes only and should not be used as a substitute for clinical judgment, institutional protocols, specialist consultation, or individualized patient care. Full disclaimer: https://whiteboardmedicine.com/disclaimer

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“What did the council decide on item 42?” — answered with the speaker and the moment.

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