12-LEAD ECG INTERPRETATION

Up Objectives Schedule Faculty

OBJECTIVES

Describe electrode placement for each of the 12 ECG leads.

Predict the normal ECG morphology seen in each of the 12 leads.

Determine the mean QRS axis on a 12-lead ECG.

Explain the physiologic basis of axis deviation.

Explain the relationships between the coronary arteries, left ventricular walls, and ECG leads which provide a basis for localizing myocardial infarctions.

Discuss reciprocal ECG changes seen with a myocardial infarction.

Recognize the following on a 12-lead ECG: anterior myocardial infarction, inferior myocardial infarction, lateral myocardial infarction, and posterior myocardial infarction.

Contrast ECG findings seen in a Q-wave versus a non Q-wave myocardial infarction.

Discuss the electrocardiographic diagnosis of a right ventricular infarction.

List conditions other than myocardial infarction that may product ST segment or T wave changes.

Identify noncardiac surgical patients at increased risk for myocardial ischemia/infarction.

Recognize the following on a 12-lead ECG: right bundle branch block, left bundle branch block, left anterior fascicular block, left posterior fascicular block, and bifascicular block.

Relate coronary artery distribution to the etiology of bundle branch blocks.

Discuss the clinical significance of a new bundle branch block in a patient with an acute myocardial infarction.

Explain the risk of pulmonary artery catheterization in a patient with a left bundle branch block.

Recognize the following on a 12-lead ECG: right atrial enlargement, left atrial enlargement, right ventricular hypertrophy, left ventricular hypertrophy, and strain pattern.

Discuss the clinical significance of left ventricular hypertrophy with strain in a patient with hyper-tension.

Describe typical ECG changes that may be seen in the following electrolyte abnormalities: hyperkalemia, hypokalemia, hypercalcemia, and hypocalcemia.

Discuss the effects of various medications on the ECG.

 

 

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