Dive into a comprehensive lecture on electrocardiogram (ECG/EKG) fundamentals, covering essential concepts for reading and interpreting these vital diagnostic tools. Learn about waveforms, deflections, and key components such as the isoelectric line, PR interval, and various leads including precordial leads. Gain a solid foundation in understanding EKG patterns and their significance in assessing cardiac function. Explore the intricacies of ECG interpretation through detailed explanations and visual aids, equipping yourself with the knowledge needed to analyze and evaluate electrocardiograms effectively in clinical settings.