Quick 12-Lead ECG/EKG Format with Corresponding Infarcts

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Quick 12-Lead ECG/EKG Format

EKG and Locations of Infarcts:

• ST-segment elevation and T-wave inversion in leads II, III and aVF for infarcts in right coronary artery occlusion. Most common complication is 3rd degree heart block. Always administer IV fluids in right ventricular myocardial infarction.

• ST-segment elevation and T-wave inversion in leads I, aVL, and V4 V6 for infarcts in circumflex artery.

• ST-segment elevation and T-wave inversion in leads V1V3 for anteroseptal infarcts in left anterior descending artery.

• ST-segment elevation and T-wave inversion in leads V2V4 for anterior infarcts in left anterior descending artery.

• ST-segment elevation and T-wave inversion in leads I, aVL, and V1V3 for lateral infarcts in left anterior descending artery.

• Leads V1V2 show a tall broad initial R wave, with ST depression in leads V1V3, and tall upright T waves in these leads for infarcts in posterior descending artery.

Normal EKG for reference:

This is an EKG of a healthy 18-year-old male. Click on the following image to enlarge:

image of normal EKG

Additional Reading:

Basic Cardiology

1. Electrical Activity of the Heart
2. Heart Muscle Mechanics
3. Heart Sounds and Murmurs
4. Additional FAQ on Heart Sounds and Murmurs
5. Cardiac Conduction Diagram
6. Blood Pressures in Cardiac Chambers
7. What is Pulsus Paradoxus?
8. FAQ on Heart Murmurs and Mechanisms of Turbulent Flow
9. Notes on Fetal Circulation
10. FAQ on Ischemic Myocardial Infarction
11. FAQ on Electrocardiograms / ECG / EKG
12. FAQ on Cardiac Conduction
13. The Heart as a Pump, the Cardiac cycle and Cardiac Output
14. What are the most common causes of aortic stenosis?
15. What is Pulseless Electrical Activity?
16. Causes and Complications of Arteriovenous Fistulas
17. CHADS2 Score for Atrial Fibrillation Stroke Risk
18. How to Reduce Blood Pressure without Medications?
19. Types of Shock
20. Locations of Heart Murmurs on Chest Wall
21. Types of Heart Blocks

Electrocardiogram (EKG/ECG) Topics

1. EKG Chest Leads
2. EKG Limb Leads
3. Quick 12-Lead ECG/EKG Format

Cardiology Videos

1. Video of Cardiology Examination in a Clinical Setting

Medical Images

Useful Medical Images & Diagrams (link opens in a new window)

Related Topics

1. Thorax Anatomy
2. Vascular Disorders
3. Heart Disorders
4. Histology of the Cardiovascular System
5. Jugular Venous Distention Workup
6. ER Chest Pain Workup
7. Cardiac Examination for Internal Medicine
8. FAQ on Blood Pressure
9. FAQ on principles of fluid and flow dynamics of Blood

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