What is one reason for obtaining a 12-lead ECG?

The primary purpose of the 12-lead EKG is to screen patients for cardiac ischemia, especially for acute ST-elevation myocardial infarction.

Is anterior myocardial infarction a heart attack?

Anterior myocardial infarction (AMI) is a common heart disease associated with significant mortality and morbidity. Advancement in diagnosis and treatment options have led to a favorable outcome.

What is inferior posterior myocardial infarction?

Posterior wall myocardial infarction occurs when circulation becomes disrupted to the posterior heart. It commonly cooccurs with inferior or inferolateral MI, but when in isolation, posterior myocardial infarction represents a diagnostic challenge.

What are the 12 leads?

Each of the 12 EKG leads represent a different direction of cardiac activation in 3-D space. The standard EKG leads are denoted as lead I, II, III, aVF, aVR, aVL, V1, V2, V3, V4, V5, V6. Leads I, II, III, aVR, aVL, aVF are denoted the limb leads while the V1, V2, V3, V4, V5, and V6 are precordial leads.

How is posterior MI confirmed?

In patients presenting with ischaemic symptoms, horizontal ST depression in the anteroseptal leads (V1-3) should raise the suspicion of posterior MI. Posterior infarction is confirmed by the presence of ST elevation and Q waves in the posterior leads (V7-9).

How is an anterior myocardial infarction treated?

Beta blockers, glyceryl trinitrate and possibly ACE inhibitors work in this way. All patients with a suspected myocardial infarction should be given aspirin. It is a powerful antiplatelet drug, with a rapid effect, which reduces mortality by 20%. Aspirin, 150-300 mg, should be swallowed as early as possible.

Why would you do a posterior ECG?

Clinical Significance of Posterior MI Posterior extension of an inferior or lateral infarct implies a much larger area of myocardial damage, with an increased risk of left ventricular dysfunction and death. Isolated posterior infarction is an indication for emergent coronary reperfusion.

What makes posterior myocardial infarction a posterior STEMI?

Marked ST elevation in V7-9 with Q-wave formation confirms involvement of the posterior wall, making this an inferior-lateral-posterior STEMI (= big territory infarct!). In this ECG, posterior MI is suggested by the presence of:

How often does posterior myocardial infarction occur?

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 are the hallmarks of inferior wall myocardial infarction?

Inferior wall myocardial infarction (IMI) is the most common ST-elevation myocardial infarction (STEMI). The classic features of inferior STEMI are unmistakable: The hallmark is the presence of ST-segment elevations in the “inferior limb leads” – II, III and aVF. In most cases, there is reciprocal ST-segment depression in the high lateral

Which is an example of an inferior Q-wave mi?

Example #2: Old inferior Q-wave MI; note largest Q in lead III, next largest in aVF, and smallest in lead II (indicative of right coronary artery occlusion). ECG changes are seen in anterior precordial leads V1-3, but are the mirror image of an anteroseptal MI:

What is one reason for obtaining a 12-lead ECG? The primary purpose of the 12-lead EKG is to screen patients for cardiac ischemia, especially for acute ST-elevation myocardial infarction. Is anterior myocardial infarction a heart attack? Anterior myocardial infarction (AMI) is a common heart disease associated with significant mortality and morbidity. Advancement in diagnosis and…