Impedance, resistance and systolic wall stress data in chronic severe mitral regurgitation
| Impedance (mm Hg/mL/s) | |
| Retrograde | 0.77±0.17 |
| Forward | 0.63±0.12, p=0.003 vs retrograde |
| Total | 0.35±0.06 |
| Resistance (dyne s/cm5) | |
| Retrograde | 851±191 |
| Forward | 674±130, p=0.001 vs retrograde |
| Afterload (g/cm2) | |
| Mean systolic stress | 372±24 |