What is infarct related artery?
What is infarct related artery?
Infarct related artery or culprit artery refers to a coronary artery that is blocked or stenosed by atheroma and thrombosis, and responsible for an acute coronary syndrome.
Which artery is ECG?
Table 1: Localization of ischemic area in ST Elevation Myocardial Infarction (STEMI/STE-ACS)
| Leads with ST segment elevations | Affected myocardial area | Occluded coronary artery (cuprit) |
|---|---|---|
| V3–V4 | Anterior | LAD. |
| V5–V6 | Apical | Distal LAD, LCx or RCA. |
| I, aVL | Lateral | LCx. |
| II, aVF, III | Inferior | 90% RCA. 10% LCx. |
How do you identify an inferior wall on an ECG?
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)
What does inferior infarct look like on ECG?
The ECG findings of an inferior ST segment elevation myocardial infarction include: ST segment elevation in the inferior leads (II, III, and aVF) of at least 1 mm. Reciprocal ST segment depression in the lateral and/or high lateral leads (I, aVL, V5 and V6).
Which is the culprit artery in myocardial infarction?
The culprit artery is defined as total occlusion (Thrombolysis in Myocardial Infarction, TIMI grade 0) or significant stenosis (> 70% diameter stenosis) of RCA or LCX and of their major branches with intraluminal thrombosis or supply to hypokinetic territory.
How is occlusion site of infarct-related coronary artery determined?
The occlusion site of infarct-related coronary artery determined by coronary angiography is classified into three groups: proximal RCA: lesion proximal to the first right ventricular branch of the RCA; distal RCA: lesion distal to the first right ventricular branch of the RCA; and LCX groups.
Which is the culprit vessel in inferior MI?
The culprit vessel in inferior MI: RCA (in 80%) or CX. Greater ST-segment elevation in lead III than in lead II & ST-segment depression of more than 1 mm in leads I and aVL suggest involvement of the RCA rather than the CX.