Coronary Circulation — ECG Academy Lesson

How the heart feeds itself through coronary arteries, why perfusion depends on diastole, and what connects heart rate to ST changes on the monitor.

Learning Objectives

• Name the three major coronary arteries and describe the territory each supplies
• Explain why coronary artery perfusion occurs primarily during diastole
• Describe how tachycardia reduces coronary perfusion time
• Connect the concept of coronary ischemia to ST changes on the monitor