What is a posterior MI?

What is a posterior MI?

A posterior wall MI occurs when posterior myocardial tissue (now termed inferobasilar), usually supplied by the posterior descending artery — a branch of the right coronary artery in 80% of individuals — acutely loses blood supply due to intracoronary thrombosis in that vessel.

What is a posterior heart attack?

A posterior myocardial infarction (MI) is a heart attack or cessation of blood flow to the heart muscle that involves the backside or posterior side of the heart.

What is posterior ECG?

Posterior ECG leads (V7-V9) are applied by moving V4-V6 to under the left scapula. Purpose: To detect posterior infarcts, which are often associated with inferior or lateral wall AMI.

Is a posterior MI a stemi?

Clinical Significance of Posterior MI Posterior infarction accompanies 15-20% of STEMIs, usually occurring in the context of an inferior or lateral infarction. Isolated posterior MI is less common (3-11% of infarcts).

What causes 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.

How is anterior wall MI diagnosed?

The ECG findings of an acute anterior myocardial infarction wall include:

1. 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.
2. Reciprocal ST segment depression in the inferior leads (II, III and aVF).

What causes a posterior MI?

What artery causes posterior MI?

What are the anterior leads?

The arrangement of the leads produces the following anatomical relationships: leads II, III, and aVF view the inferior surface of the heart; leads V1 to V4 view the anterior surface; leads I, aVL, V5, and V6 view the lateral surface; and leads V1 and aVR look through the right atrium directly into the cavity of the …

How is posterior MI treated?

The definitive management of acute posterior STEMI is reperfusion therapy. Optimally this is done via percutaneous coronary intervention (PCI), though the next option would be fibrinolytic therapy. PCI is the preferred option if it can be initiated within 120 minutes, though within 90 minutes is the goal.

What is ST elevation MI?

ST-segment elevation myocardial infarction (STEMI) is the term cardiologists use to describe a classic heart attack. It is one type of myocardial infarction in which a part of the heart muscle (myocardium) has died due to the obstruction of blood supply to the area.

Is anterior 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.