Upon ECG analysis, inferior STEMI displays ST-elevation in leads II, III, and aVF. There are subtle differences in the ECG pattern depending on the artery occluded. Reciprocal changes (ST-segment depression) may be seen in lead aVL [6].
Beside this, how can you tell MI from ECG?
The ECG findings of an acute anterior myocardial infarction wall include:
- 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).
- 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)
Also, how do you identify inferior MI?
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).
How is inferior MI treated?
The traditional field treatment for an MI is aspirin and oxygen, with nitroglycerin and morphine for pain (often referred to as MONA). Some services now administer angiotensin converting enzyme (ACE) inhibitors, clopidogrel, and beta-blocking drugs as well.
Is inferior wall MI serious?
Inferior wall myocardial infarction (MI) occurs from a coronary artery occlusion with resultant decreased perfusion to that region of the myocardium. Unless there is timely treatment, this results in myocardial ischemia followed by infarction.
What does inferior MI mean?
An inferior 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 either the right coronary artery in 85% of the cases or the left circumflex in 15% of the cases.
What is a fixed inferior wall defect?
A fixed defect is a perfusion defect present at stress and rest. Primary differential for a fixed defect includes scarring from infarction, chronically ischemic areas called hibernating myocardium, or attenuation.
What is Anteroseptal?
Medical Definition of anteroseptal
: located in front of a septum and especially the interventricular septum An electrocardiogram showed atrial fibrillation, with a ventricular rate of 116 beats per minute, and confirmed the presence of an old anteroseptal infarct.—
What is normal ECG report?
The normal range of the ECG differed between men and women: heart rate 49 to 100 bpm vs. 55 to 108 bpm, P wave duration 81 to 130 ms vs. 84 to 130 ms, PR interval 119 to 210 ms vs. 120 to 202 ms, QRS duration 74 to 110 ms vs.
What is the inferior wall of the heart?
The right coronary artery supplies blood to the right ventricle and then supplies the underside (inferior wall) and backside (posterior wall) of the left ventricle.
Which heart block is associated with inferior wall MI?
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.
Which lead reflects an inferior wall myocardial infarction on an ECG?
Details follow. Inferior wall infarction causes ST-segment elevations in leads II, III and aVF. The ST-segment elevation is highest in lead III and the majority of cases display reciprocal ST-segment depressions in lead aVL and I.
Why is there no nitro in inferior 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.