MVO/SVC Determination
MVO (Maximum Venous Outflow) and SVC (Segmental Venous Capacitance) determination are advanced tests that assess venous function and capacity, providing critical data for the diagnosis and management of venous disorders.
MVO and SVC tests measure the ability of veins to accommodate and expel blood, reflecting venous compliance and outflow. These parameters are essential for evaluating chronic venous insufficiency and planning interventions.
- Non-invasive and safe
- Assesses venous capacitance and outflow
- Guides treatment for venous disorders
Using air plethysmography or similar techniques, the limb is elevated and then occluded to measure venous filling and emptying rates. The results provide quantitative data on venous function and capacity.
- Standardized occlusion and release protocol
- Real-time monitoring of venous volume changes
- Automated data capture and analysis
Test Protocol Flow
Patient Positioning
Patient lies supine with leg elevated 45° to empty veins
Cuff Application
Pneumatic cuff placed around thigh, inflated to 80 mmHg
Venous Filling (SVC)
Patient stands, cuff deflated - measures venous filling rate
Venous Outflow (MVO)
Cuff re-inflated, patient exercises - measures venous emptying rate
SVC (Segmental Venous Capacitance)
Volume of blood that fills the leg veins when standing
Clinical Significance: Higher values indicate venous insufficiency
MVO (Maximum Venous Outflow)
Rate at which blood empties from leg veins during exercise
Clinical Significance: Lower values indicate venous outflow obstruction
MVO/SVC determination is invaluable for:
- Diagnosing chronic venous insufficiency
- Guiding treatment and monitoring outcomes
- Supporting early intervention and improved patient care
These tests are recommended in clinical guidelines for comprehensive venous assessment and are a mainstay in vascular labs.
VasoGuard systems streamline MVO/SVC determination with automated workflows, high-precision sensors, and intuitive software. Clinicians benefit from real-time data, comprehensive reporting, and seamless integration with EMR systems.
- Automated MVO/SVC protocols
- High-resolution waveform display
- Comprehensive data management and export