Venule — ECG/EKG Terminology

Definition: Small vein.

Key Facts

• Small veins that collect blood from capillary beds.
• Participate in volume reservoir function of venous circulation.
• Drain into progressively larger veins returning to the heart.

ECG Connection: No direct ECG signal, but systemic venous return influences hemodynamics and rhythm tolerance.

Why It Matters: Understanding preload helps interpret telemetry changes during fluid shifts.