T wave

The T wave is a part of an electrocardiogram (ECG) that represents the heart's ventricles (the main pumping chambers) as they recover after contracting to pump blood. Think of it as the heart "resetting" itself so it can prepare for the next beat. The T wave appears as a small upward curve following the main heartbeat spike (the QRS complex). Its shape and timing help doctors assess the heart's electrical stability and identify potential issues like abnormal rhythms or damage. In essence, the T wave provides important information about the heart's electrical recovery process.