Table 4 Statistical analysis of the various parameters obtained on the subxiphoid view and on the reference apical view
Mean apical | CV apical | CE apical | Precision of apical | Mean subxiphoid | Bias (± SD) | Bias (% of the apical value) | Percentage error | Precision of subxiphoid | |
|---|---|---|---|---|---|---|---|---|---|
LVEF | 54% ± 16 | 29.6 | 17.1 | 34% | 55% ± 14 | -0.1 ± 8.6 | -1.5% ± 17 | 32% | 12% |
Ao VTI | 18 cm ± 5 | 29.1 | 16.8 | 34% | 16 cm ± 5 | 2.0 ± 2.8 | 12% ± 16 | 31% | 13% |
E/A | 1.2 ± 0.9 | 75.7 | 43.7 | 87% | 1.1 ± 0.5 | 0.03 ± 0.2 | 5% ± 16 | 33% | 81% |
E/Ea | 9.6 ± 4.6 | 47.5 | 27.4 | 55% | 7.6 ± 4 | 1.9 ± 2.4 | 22% ± 28 | 50% | 23% |
RVEDA/LVEDA | 0.5 ± 0.19 | 37.5 | 21.6 | 43% | 0.49 ± 0.18 | 0.01 ± 0.1 | 3% ± 22 | 40% | 16% |