It is typically small, and, by definition, follows the T wave.

In most leads, the T wave is positive.

His T waves have peaked and his potassium is up.

This is known as appropriate T wave discordance with bundle branch block.

Diminution of T waves has been noticed on routine electrocardiographic recordings.

A less common variant is biphasic T wave inversions in the same leads.

However, a negative T wave is normal in lead aVR.

Also, the T wave is inverted, accompanied by ST depression.

The "T wave" represents repolarization, the electrical "resetting" of the heart for the next beat.

The last half of the T wave is referred to as the relative refractory period (or vulnerable period).

The T wave contains more information than the QT interval.

This is because the end of the T wave is not always clearly defined and usually merges gradually with the baseline.

In electrocardiography, the T wave represents the repolarization (or recovery) of the ventricles.

A concordant T wave may suggest ischemia or myocardial infarction.

The T wave shows when the lower heart chambers are resetting electrically and preparing for their next muscle contraction.

If the burst of current occurs in the vulnerable T wave of the heart cycle then fibrillation may occur.

There can also be ST depression or T wave inversion, these do not indicate toxicity.

The QRS and T waves look very different to normal readings.

The T wave will generally become inverted in the first 24 hours, as the ST elevation begins to resolve.

However the QRS complex and T waves appear relatively normal.

The electrocardiogram may show flattening of T waves and prominent U waves.

Tall and narrow ("peaked" or "tented") symmetrical T waves may indicate hyperkalemia.

Within seconds Frank's regular cardiac rhythm degenerated with T waves peaking, and then flattening out.

Flat or inverted T waves are most common, often with low-voltage QRS complexes.

The T wave should be deflected opposite the terminal deflection of the QRS complex.