Systemic Vascular Resistance (SVR) Calculator
This calculator estimates Systemic Vascular Resistance (SVR), a key measure of afterload and vascular tone. It uses mean arterial pressure (MAP), central venous pressure (CVP), and cardiac output (CO) to assess blood flow resistance within systemic circulation.
SVR Estimator Using MAP, CVP, and CO
Systemic Vascular Resistance Formula
Where:
- $$SVR$$ = Systemic Vascular Resistance (dyn·s·cm⁻⁵)
- $$MAP$$ = Mean Arterial Pressure (mmHg)
- $$CVP$$ = Central Venous Pressure (mmHg)
- $$CO$$ = Cardiac Output (L/min)
- Constant 80 = unit conversion factor
Systemic Vascular Resistance (SVR) reflects the resistance the heart must overcome to pump blood through the systemic circulation. It’s calculated using MAP, CVP, and CO, and is an important hemodynamic parameter in critical care and cardiology. Elevated SVR may indicate vasoconstriction, hypovolemia, or left heart failure, while decreased SVR can occur with vasodilation or sepsis.