T Wave — ECG/EKG Terminology

Definition: The wave following the QRS complex, representing ventricular repolarization.

Key Facts

• Represents ventricular repolarization following depolarization.
• Shape and polarity vary by lead but should be physiologically consistent.
• Inversion, peaking, or dynamic change can indicate ischemia or electrolyte disturbance.

ECG Connection: T-wave morphology changes are often early signs of ischemia or metabolic abnormalities.

Why It Matters: Serial T-wave comparison can reveal clinically important deterioration.