What does a flat T wave on an EKG typically suggest?

A flat T wave on an EKG is often indicative of myocardial ischemia, signaling that the heart muscle is not receiving sufficient blood flow and therefore oxygen. This condition can arise due to various factors, such as narrowed coronary arteries or increased demand on the heart, which can occur during physical exertion or stress. Myocardial ischemia may present as a flat or inverted T wave, as the repolarization of the myocardial cells is affected by the lack of adequate blood supply.

In normal EKG readings, T waves are usually upright and have a specific morphology. Changes in T wave appearance, such as flattening, can be key diagnostic indicators, reflecting underlying issues with cardiac health. Therefore, recognizing flat T waves as a sign of myocardial ischemia enables healthcare providers to take immediate action to assess and manage the patient’s condition.