Reading an ECG involves understanding several key components:
P Wave: Represents atrial depolarization. The P wave should be upright in most leads. QRS Complex: Indicates ventricular depolarization. It is usually narrow and sharp. T Wave: Reflects ventricular repolarization. It follows the QRS complex. PR Interval: Time between the onset of the P wave and the start of the QRS complex. Normally, it ranges from 0.12 to 0.20 seconds. ST Segment: Represents the interval between ventricular depolarization and repolarization. It should be isoelectric.
