Endocardium — ECG/EKG Terminology

Definition: Inner lining of the heart.

Key Facts

• Thin endothelial lining of the heart chambers and valves.
• Provides a smooth surface for blood flow and valve function.
• Inflammation or infection may affect valve competence and embolic risk.

ECG Connection: Endocardial pathology has indirect ECG findings, commonly rhythm disturbances from associated inflammation.

Why It Matters: New conduction abnormalities can accompany structural or inflammatory cardiac disease.