Coronary Arteries — ECG/EKG Terminology

Definition: Blood vessels that branch from the aorta and carry oxygen-rich blood to the heart muscle.

Key Facts

• Supply oxygenated blood to myocardium during diastole.
• Flow limitation causes ischemia and, if prolonged, infarction.
• Coronary anatomy determines infarct territory patterns on ECG.

ECG Connection: Acute coronary occlusion can cause ST elevation, reciprocal changes, and evolving T-wave abnormalities.

Why It Matters: Rapid detection of ischemic patterns supports urgent escalation for reperfusion workflows.