ECG waveforms represent the electrical activity of the heart, captured through an electrocardiogram. These waveforms consist of several key components: the P wave, QRS complex, and T wave. The P wave indicates atrial depolarization, while the QRS complex reflects ventricular depolarization. The T wave represents ventricular repolarization. Each component of the ECG waveform provides important information about heart function. For instance, the duration and shape of these waves can help identify various heart conditions, such as arrhythmias or myocardial infarctions. Understanding these waveforms is crucial for diagnosing and monitoring heart health.