INTRODUCTION. High lateral ST-segment elevation myocardial infarction. (STEMI) is a pattern of ST-segment elevation caused by acute occlusion of the first diagonal branch (D1) of the left anterior descending coronary artery (LAD-D1).
Moreover, can you have an inferior lateral MI?
The ECG findings of an acute inferior myocardial infarction include the following: ST segment elevation in the inferior leads (II, III and aVF) Reciprocal ST segment depression in the lateral and/or high lateral leads (I, aVL, V5 and V6)
- 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. …
- Reciprocal ST segment depression in the inferior leads (II, III and aVF).
Also to know is, how is lateral myocardial infarction treated?
Treatment is antiplatelet drugs, anticoagulants, nitrates, beta-blockers, statins, and reperfusion therapy. For ST-segment-elevation myocardial infarction, emergency reperfusion is via fibrinolytic drugs, percutaneous intervention, or, occasionally, coronary artery bypass graft surgery.
How is STEMI diagnosed?
Classically, STEMI is diagnosed if there is >1-2mm of ST elevation in two contiguous leads on the ECG or new LBBB with a clinical picture consistent with ischemic chest pain. Classically the ST elevations are described as “tombstone” and concave or “upwards” in appearance.
Is lateral wall ischemia serious?
Myocardial ischemia can lead to serious complications, including: Heart attack. If a coronary artery becomes completely blocked, the lack of blood and oxygen can lead to a heart attack that destroys part of the heart muscle. The damage can be serious and sometimes fatal.
What are the 5 types of myocardial infarction?
ST segment elevation myocardial infarction (STEMI) non-ST segment elevation myocardial infarction (NSTEMI) coronary spasm, or unstable angina.
What is occlusion MI?
Occlusion Myocardial Infarction (OMI): A branch of the ACS algorithm representing near or total occlusion with insufficient collateral circulation causing active infarction. Non-Occlusion Myocardial Infarction (NOMI): No occlusion, or sufficient collateral circulation to avoid active infarction.
What is reciprocal to lateral leads?
ST elevation during acute STEMI is associated with simultaneous ST depression in the electrically opposite leads: Inferior STEMI produces reciprocal ST depression in aVL (± lead I). Lateral or anterolateral STEMI produces reciprocal ST depression in III and aVF (± lead II).
What supplies the lateral wall of the heart?
Circumflex artery, which passes behind the heart between the left atrium and left ventricle and supplies blood to the side (lateral wall) of the left ventricle. In a small number of people, the circumflex artery supplies the lower and back portions of the left ventricle.
When do you use right sided ECG?
All patients with inferior wall myocardial infarction should have a right-sided ECG. ST-segment elevation in lead V4 R is the single most powerful predictor of right ventricular involvement, identifying a high-risk subset of patients in the setting of inferior wall myocardial infarction.
When should you suspect posterior MI?
Suspicion for a posterior MI must remain high, especially if inferior ST segment elevation is also present. ST segment elevation in the inferior leads (II, III and aVF) if an inferior MI is also present.
Which are the lateral leads on ECG?
The septum is represented on the ECG by leads V1 and V2, whereas the lateral wall is represented by leads V5, V6, lead I and lead aVL.
Which leads are affected in a lateral wall MI?
Lateral MI is characterized by ST elevation on the electrocardiogram (EKG) in leads I and aVL.