What does the T wave represent in an EKG?

The T wave on an EKG represents ventricular repolarization, which is the process where the ventricles recover from the contraction (depolarization) that occurred during the QRS complex. This recovery phase is crucial because it prepares the ventricles for the next heartbeat. During repolarization, the muscle cells in the ventricles return to their resting state, and this electrical activity is effectively represented by the T wave seen on the EKG tracing.

Understanding the significance of the T wave is essential for interpreting an EKG, as abnormalities in its shape or duration can indicate underlying cardiac issues, such as ischemia or electrolyte imbalances. Recognizing that the T wave corresponds specifically to ventricular repolarization highlights its importance in assessing the heart's electrical activity and overall health.