Which artery is involved in MI?

Which artery is involved in MI?

The vast majority of MI involves the anterior wall (78%). The most common coronary artery affected is the left anterior descending (LAD) branch. Coronary dissection is the primary cause of infarction in the peripartum period and more commonly in the postpartum period.

Which artery is affected in posterior MI?

Posterior myocardial infarction occurs when the posterior coronary circulation becomes disrupted. The two main branches of the coronary circulation are the right coronary artery and the left main coronary artery.

What are the areas of infarction?

ECG Changes during Myocardial Infarction (MI)

What is posterior wall of heart?

Posterior surface is now referred to as infero-posterior. The posterior aspect of heart contains essentially the venous channels and the atrium (LA in particular)pulmonary veins and coronary sinus. This happens right from 8 week heart open stage when venous end of lower straight heart tube folds up and posteriorly .

Which artery is most commonly occluded in myocardial infarction?

The left anterior descending artery was the most common culprit artery (48.3%), followed by the right coronary artery (30.9%), and the circumflex artery (20.8%). The most common acute STEMI type was inferior MI (52%)….Table 1.

Which artery is blocked in anterior MI?

In an anterior-wall MI, the left anterior descending artery, which supplies blood to the large muscular anterior wall of the left ventricle and the anterior two-thirds of the intraventricular septum, becomes occluded.

Which artery is blocked in lateral wall MI?

A lateral myocardial infarction (MI) is a heart attack or cessation of blood flow to the heart muscle that involves the inferior side of the heart. Inferior MI results from the total occlusion of the left circumflex artery. Lateral MI is characterized by ST elevation on the electrocardiogram (EKG) in leads I and aVL.

Which ECG leads are posterior?

ST elevation in the posterior leads of a posterior ECG (leads V7-V9). 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 artery is blocked in a STEMI?

Anterior STEMI. This type of STEMI usually occurs when a blockage occurs in the left anterior descending (LAD) artery, the largest artery which provides blood flow to the anterior (front) side of your heart.

Which coronary artery is most likely occluded in a patient presenting with chest pain who has ST segment elevation in V3 and V4?

Table 1: Localization of ischemic area in ST Elevation Myocardial Infarction (STEMI/STE-ACS)