ECG Waveform Diagram - Understanding Heart Rhythm Basics #3863124 (License: Personal Use)

The image displays a stylized electrocardiogram (ECG or EKG) waveform with distinct features: a small upward P wave representing atrial depolarization, a sharp tall QRS complex indicating ventricular depolarization, and a rounded T wave signifying ventricular repolarization. The baseline is flat between complexes, suggesting normal sinus rhythm without arrhythmia or artifact. The illustration uses clean black lines on a transparent background for clarity and versatility in medical education materials.

This image is commonly used in medical textbooks, online health resources, cardiology training modules, and patient education pages to introduce the fundamentals of ECG interpretation. It matches user intent for learning basic cardiac physiology, preparing for exams, or visualizing how heart electrical activity translates into diagnostic waveforms.