Infarction
Myocardial Infarction Triad
Ischemia
Myocardial Infarction Triad
Ischemia
Ischemia (decreased blood supply) is characterized by inverted T waves.
Ischemia means reduced blood supply (from the coronary arteries); the ischemic area is at the periphery of the infarct.
The characteristic sign of ischemia is the inverted T wave. It may vary from a slightly inverted to a deeply inverted T wave.
Inverted T waves may indicate ischemia in the absence of myocardial infarction. Coronary blood flow can decrease without producing an infarction.
Cardiac ischemia alone can cause chest pain known as angina, which is usually associated with transient T wave inversion.
Ischemia means reduced blood supply (from the coronary arteries); the ischemic area is at the periphery of the infarct.
The characteristic sign of ischemia is the inverted T wave. It may vary from a slightly inverted to a deeply inverted T wave.
Inverted T waves may indicate ischemia in the absence of myocardial infarction. Coronary blood flow can decrease without producing an infarction.
Cardiac ischemia alone can cause chest pain known as angina, which is usually associated with transient T wave inversion.
The typical ischemia T wave is symmetrically inverted.
You should check every EKG that you read for T wave inversion. Since the chest leads are nearest the ventricles, T wave changes are most pronounced in these leads. Always run down V1 to V6 (as well as the limb leads) and check for T wave inversion to see if there is diminished coronary flow.
The T wave of ischemia is both inverted and symmetrical; that is, the right and left sides of the inverted T wave are mirror images.
In adults flat (nonexistent) T waves or minimal T wave inversion may be a normal variant in any of the limb leads (frontal plane). However, any T wave inversion in leads V2 through V6 is considered pathological. Marked T wave inversion in leads V2 and V3 the hallmark of Wellens Syndrome, alerts us to stenosis of the anterior descending coronary.
Credit: Dale Dubin-RapidInterpreatation Of EKG
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