Quickly calculate crucial hemodynamic parameters like Cardiac Output (CO), Stroke Volume (SV), Systemic Vascular Resistance (SVR), and Pulmonary Vascular Resistance (PVR) using Doppler echocardiography measurements. This essential online tool aids cardiologists, intensivists, and medical students in rapid, accurate patient assessment and clinical decision-making.
Formula:
Formulas Used:
- Stroke Volume (SV) = VTILVOT × LVOT Area
- LVOT Area = 0.785 × LVOTD2
- Cardiac Output (CO) = SV × Heart Rate (HR)
- Cardiac Index (CI) = CO / Body Surface Area (BSA)
- Systemic Vascular Resistance (SVR) = ((Mean Arterial Pressure (MAP) - Central Venous Pressure (CVP)) / CO) × 80
- Pulmonary Vascular Resistance (PVR) = ((Mean Pulmonary Artery Pressure (MPAP) - Pulmonary Capillary Wedge Pressure (PCWP)) / CO) × 80
Where:
- VTILVOT: Velocity Time Integral of Left Ventricular Outflow Tract (cm)
- LVOTD: Left Ventricular Outflow Tract Diameter (cm)
- HR: Heart Rate (bpm)
- MAP: Mean Arterial Pressure (mmHg)
- CVP: Central Venous Pressure (mmHg)
- MPAP: Mean Pulmonary Artery Pressure (mmHg)
- PCWP: Pulmonary Capillary Wedge Pressure (mmHg)
- BSA: Body Surface Area (m²)