Endothelium — ECG/EKG Terminology

Definition: Innermost lining of blood vessels.

Key Facts

• Single-cell lining of blood vessels regulating vascular tone and thrombosis balance.
• Endothelial dysfunction contributes to atherosclerosis and plaque instability.
• Vascular inflammation increases thrombotic risk.

ECG Connection: Endothelial and plaque pathology underlies many ischemic ECG syndromes.

Why It Matters: Ischemic telemetry patterns often reflect acute vascular pathology, not only electrical disorders.