The ECG waveform consists of several components: the P wave, QRS complex, and T wave. Each of these components corresponds to specific phases of the cardiac cycle, which are deeply rooted in the histological characteristics of the heart:
- P Wave: Represents atrial depolarization initiated by the SA node. - QRS Complex: Corresponds to ventricular depolarization, involving the rapid conduction of impulses through the bundle of His and Purkinje fibers. - T Wave: Indicates ventricular repolarization.
Alterations in the histological structure of the heart, such as fibrosis, hypertrophy, or ischemic damage, can significantly affect these electrical patterns.
