Table 4.
Cut-off points, sensitivity, and specificity for highly significant continuous parameters
| Continuous parameters | Cut-off points | Sensitivity (%) | Specificity (%) |
|---|---|---|---|
| Left heart structures (Z-score sets) | |||
| Mitral valve annulus: Krishnan et al. [14] | –2.03 | 90.5 | 88.1 |
| Ratios | |||
| Mitral/tricuspid valve annulus | 0.61 | 84.6 | 87.1 |
| Carotid-subclavian artery index | 0.78 | 92.3 | 96.8 |
| Isthmus/arterial duct (sag.) | 0.59 | 92.3 | 77.4 |
| Isthmus/arterial duct (3VT) | 0.57 | 84.6 | 90 |
| I/D3VTxMV/TV | 0.37 | 100 | 94.6 |
I/D3VTxMV/TV: product of isthmus/arterial duct in the three-vessel trachea view and mitral/tricuspid valve in the four-chamber view