Official Ninja Nerd Website: Ninja Nerds! In this updated cardiovascular physiology lecture, Professor Zach Murphy explains a systematic, high-yield approach to reading and interpreting 12-lead ECGs (EKGs)—an essential skill for students, clinicians, and anyone preparing for boards or bedside care. We review the fundamentals of ECG interpretation, including rate, rhythm, axis, intervals, and waveform morphology. From there, the lecture moves step-by-step through analyzing P waves, PR intervals, QRS complexes, ST segments, T waves, and QT intervals, helping you recognize both normal findings and clinically significant abnormalities. This lecture emphasizes practical application by teaching how to identify arrhythmias, conduction blocks, ischemic changes, and electrolyte disturbances. It also reviews how each lead reflects electrical activity in different regions of the heart. Enjoy the lecture and support us below! 🌐 Official Links Website: Podcast: Store: 📱 Social Media @ninjanerdlectures 💬 Join Our Community Discord: #ninjanerd #EKGBasics #EKGs