Upon ECG analysis, inferior STEMI displays ST-elevation in leads II, III, and aVF.
Also question is, how can you tell inferior MI?
Symptoms include chest pain, heaviness or pressure and shortness of breath, and diaphoresis with radiation to the jaw or arms. There are often other symptoms such as fatigue, lightheadedness, or nausea. On physical exam, particular attention should be given to the heart rate since bradycardia and heart block may occur.
Also, 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 artery is involved in an inferior MI?
In most patients, the inferior myocardium is supplied by the right coronary artery. In about 6-10% of the population, because of left dominance, the left circumflex will supply the posterior descending coronary artery. Approximately 40% of all MIs involve the inferior wall.
What is inferior MI ECG?
Inferior Wall ST Segment Elevation Myocardial Infarction (MI) ECG Review. An inferior wall MI — also known as IWMI, or inferior MI, or inferior ST segment elevation MI, or inferior STEMI — occurs when inferior myocardial tissue supplied by the right coronary artery, or RCA, is injured due to thrombosis of that vessel.
What is lateral myocardial infarction?
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.
What is the treatment for an inferior MI?
Prehospital fibrinolytic therapy by the administration of tissue-type plasminogen activator (t-PA), aspirin, and heparin may be given to patients with bona fide MI by paramedics, as guided by electrocardiographic findings, within 90 minutes of the onset of symptoms.
Why does inferior wall MI cause bradycardia?
Also, because the right coronary artery perfuses the sinoatrial node, heart block and bradycardia may occur. A high degree heart block, defined as a second or third-degree block, is seen in 19% of patients with acute inferior wall MI. The amount of collateral circulation to the AV impacts the rate of heart blocks.
Why nitrates are contraindicated in inferior wall MI?
Nitroglycerin is also contraindicated in the setting of an inferior MI with right ventricular involvement because, in this specific situation, the heart is dependent on preload.
Why we do right sided ECG in inferior MI?
All patients with chest pain should receive a 12-lead ECG early in the patient encounter. When the patient is suffering acute inferior STEMI a right-sided 12-lead ECG can help to identify right ventricular infarction.