\[LVSW=(MAP-PCWP)*SV*0.0136\]
Variables
LVSWleft ventricular stroke work (g·m/beat)
MAPmean arterial pressure (mmHg)
PCWPpulmonary capillary wedge pressure (mmHg)
SVstroke volume (mL/beat)
Description
What is this formula?
Left Ventricular Stroke Work (LVSW) estimates the mechanical work performed by the left ventricle during a single heartbeat. It combines the pressure generated by the ventricle and the volume of blood ejected.
When to use it
Use this formula in advanced hemodynamic assessment, cardiac catheterization, intensive care monitoring, and evaluation of left ventricular performance.
Example
Data:
MAP = 95 mmHg
PCWP = 15 mmHg
SV = 80 mL/beat
Formula:
LVSW = (MAP − PCWP) × SV × 0.0136
Substitution:
LVSW = (95 − 15) × 80 × 0.0136
Result:
LVSW = 87.04 g·m/beat
Applications
- Cardiac performance assessment
- Critical care monitoring
- Cardiogenic shock evaluation
- Cardiac catheterization
- Ventricular function studies