Archives

The wave that arrives after the QRS; is a graphical presentation of ventricular repolarization. Expect a T wave to follow every QRS complex. The T Read More

An inverted T wave can point to cardiac ischemia among other causes. Ischemia to the epicardium prolongs ventricular repolarization to this area. This extended repolarization Read More

A cardiac rhythm with a rate above 100/minute; for example, if the impulse originates from the atria with a rate of 160/minute, the rhythm is Read More

Also known as complete heart block, the supraventricular impulse is blocked at the junction or high in the bundle branches; as a result, the myocardium Read More

The minimum level of electrical current necessary for an artificial pacemaker to stimulate depolarization of the heart. 1. Six Second ECG Guidebook (2012), T Barill, Read More

The electrical potential point across the cell membrane where the cell’s channels open to cause depolarization; for example, in the heart’s myocardial cells, the fast Read More

Means the twisting of the points, a polymorphic ventricular tachycardia characterized by periods of increasing QRS amplitude followed with a period of reduced QRS amplitude Read More

The baseline or isoelectric line is a reference point for the waves, intervals and segments. While the PR segment is often used as the baseline, Read More

A full thickness myocardial infarction through all three layers of the heart – epicardium, myocardium and endocardium. 1. Six Second ECG Guidebook (2012), T Barill, Read More

The atria and ventricles are separated by the tricuspid valve (3 leaf) in the right heart. Valves act as gates ensuring unidirectional blood flow. They Read More