The T wave on the ECG is typically characterized as:

The T wave on the ECG is typically characterized as positive, rounded, and slightly asymmetric. This waveform represents the repolarization of the ventricles following depolarization, which is seen in the QRS complex. A healthy T wave is usually upward deflecting, indicating that the electrical activity is returning to its resting state. Its rounded and slightly asymmetric nature is a normal characteristic, reflecting the differing durations of electrical activity as the ventricles relax.

Understanding these properties is crucial, as abnormalities in the T wave can indicate various cardiac conditions or electrolyte imbalances. For example, a peaked T wave can be associated with hyperkalemia, while a flattened T wave may suggest ischemia or electrolyte disturbances. This knowledge is important for interpreting an ECG accurately, recognizing potential issues, and making clinical decisions.