How long does ST elevation last after MI?

S-T segment elevation was present on admission in 18 of 23 patients (78 per cent) with acute anterior myocardial infarction and persisted in 13 after 1 week and in 9 of 14 (64 percent) during a follow-up period of 1 to 6 months.

How does ST elevation indicate MI?

An acute ST-elevation myocardial infarction (STEMI) is an event in which transmural myocardial ischemia results in myocardial injury or necrosis. [1] The current 2018 clinical definition of myocardial infarction (MI) requires the confirmation of the myocardial ischemic injury with abnormal cardiac biomarkers.

Is anterior myocardial infarction serious?

Anterior myocardial infarction (AMI) is a common heart disease associated with significant mortality and morbidity. Advancement in diagnosis and treatment options have led to a favorable outcome.

When does an anterior wall ST segment elevation MI ECG occur?

Anterior Wall ST Segment Elevation MI ECG Review. An anterior wall myocardial infarction — also known as anterior wall MI, or AWMI, or anterior ST segment elevation MI, or anterior STEMI — occurs when anterior myocardial tissue usually supplied by the left anterior descending coronary artery suffers injury due to lack of blood supply.

What does ST elevation mean in anterior myocardial infarction?

This pattern is seen in proximal LAD occlusion and indicates a large territory infarction with a poor LV ejection fraction and high likelihood of cardiogenic shock and death. ST elevation is present throughout the precordial and inferior leads. There are hyperacute T waves, most prominent in V1-3.

What are the ECG results of an anterior myocardial infarction?

This large anterior myocardial infarction is termed an extensive anterior. The ECG findings of an acute anterior myocardial infarction wall include: ST segment elevation in the anterior leads (V3 and V4) at the J point and sometimes in the septal or lateral leads, depending on the extent of the MI.

What does ST elevation mean on an EKG?

There is also slight ST elevation in the inferior leads and T wave inversion. The EKG suggests an inferior wall infarction, probably old. (the best way to determine “old” is to see a previous cardiogram). Copyleft image obtained courtesy of, http://en.ecgpedia.org/wiki/Main_Page