Table 3.
Absolute and relative changes of indexed ventricular volumes and changes of ejection fractions during inspiration
| Volume increase (percentage relative to end-expiratory volume), absolute increase of ejection fraction | T-test for comparison (P-value) | |||
|---|---|---|---|---|
| RV overload | Controls | |||
| RV | EDVi (ml/m2) per TTVi (ml/m2) | + 19.0 ± 6.0 (+ 16.0 ± 9.0%) | + 16.0 ± 7.0 (+ 22.0 ± 13.0%) | 0.31 |
| ESVi (ml/m2) per TTVi (ml/m2) | + 6.8 ± 4.6 (+ 1.4 ± 0.9%) | + 12.0 ± 7.0 (+ 4.7 ± 4.3%) | 0.09 | |
| SVi (ml/m2) per TTVi (ml/m2) | + 13.0 ± 3.0 (+ 15.0 ± 6.0%) | + 21.0 ± 6.0 (+ 35.0 ± 17.0%) | 0.38 | |
| EF (%) | + 1.4 ± 0.9 | + 6.1 ± 1.5 | 0.01 | |
| LV | EDVi (ml/m2) per TTVi (ml/m2) | -5.3 ± 2.3 (-8.6 ± 3.0%) | -4.7 ± 1.6 (-6.1 ± 1.8%) | 0.28 |
| ESVi (ml/m2) per TTVi (ml/m2) | + 0.4 ± 0.4 (+ 1.7 ± 1.6%) | + 0.7 ± 0.5 (+ 2.1 ± 2.0%) | 0.31 | |
| SVi (ml/m2) per TTVi (ml/m2) | -5.5 ± 2.5 (-13.9 ± 4.7%) | -5.3 ± 1.7 (-10.2 ± 3.0%) | 0.36 | |
| EF (%) | -3.0 ± 1.8 | -3.3 ± 1.1 | 0.47 | |
EDVi end-diastolic volume indexed to body surface area, EF ejection fraction, ESVi end-systolic volume indexed to body surface area, LV left ventricular, RV right ventricular, SVi stroke volume indexed to body surface area, TTVi typical tidal volume indexed to body surface area