A normal ECG (electrocardiogram) shows that the heart’s electrical activity is functioning properly, with regular rhythm, normal heart rate (usually 60–100 beats per minute), and correctly shaped waves (P wave, QRS complex, and T wave). In contrast, an abnormal ECG indicates irregularities in the heart’s electrical signals, such as arrhythmias, blocked pathways, heart enlargement, or ... https://sunfox.in/blogs/what-does-normal-ecg-and-abnormal-ecg-mean/