What does the T wave represent on an EKG strip?

The T wave on an EKG strip represents the repolarization of the ventricles. This is the process where the ventricular muscle cells return to their resting state after contraction, allowing the heart to reset and prepare for the next heartbeat. During repolarization, the electrical activity indicates that the ventricles are recovering from the depolarization that preceded their contraction, which is represented by the QRS complex.

Understanding the significance of the T wave is vital for interpreting EKGs, as abnormalities in this wave can indicate various cardiac issues, such as electrolyte imbalances or ischemia. The timing and shape of the T wave are also crucial for diagnosing potential heart problems. Recognizing that the T wave is specifically related to ventricular activity helps in distinguishing it from other components of the EKG, such as the P wave, which corresponds to atrial depolarization, and the QRS complex, which involves ventricular depolarization.