Table 2.
The optimal cutoff values of TTE parameters and the diagnostic efficacy for new criterion.
| Parameters | Cutoff values | Sen (%) | Spe (%) | PPV (%) | NPV (%) | Acc (%) | p |
|---|---|---|---|---|---|---|---|
| TAPSE/sPAP | < 0.50 mm/mmHg | 79.6 | 80.0 | 95.7 | 41.4 | 79.7 | < 0.001 |
| TAPSE/sPAP | < 0.55 mm/mmHg※ | 88.0 | 60.0 | 92.5 | 47.4 | 83.8 | < 0.001 |
| RVOT-AT | < 93 ms | 88.6 | 60.0 | 91.8 | 51.2 | 83.9 | < 0.001 |
| RVOT-AT | < 105 ms※ | 92.0 | 34.3 | 87.6 | 46.2 | 82.5 | < 0.001 |
| RAA | > 14.5 cm2 | 66.9 | 69.4 | 91.4 | 30.1 | 67.3 | < 0.001 |
| RAA | > 18 cm2※ | 35.8 | 72.2 | 86.3 | 18.7 | 42.0 | 0.465 |
| mPA | > 25 mm | 68.8 | 60.0 | 89.6 | 27.6 | 67.1 | 0.002 |
| LVEI | > 1.1 | 42.3 | 93.9 | 97.3 | 24.2 | 50.7 | < 0.001 |
| sPAP | > 37.5 mmHg | 84.0 | 72.7 | 94.0 | 47.1 | 82.2 | < 0.001 |
| TRV | > 2.8 m/s | 90.0 | 57.6 | 91.6 | 52.8 | 84.7 | < 0.001 |
| RVD | > 26.5 mm | 60.6 | 77.8 | 93.0 | 28.9 | 63.5 | < 0.001 |
| RVD/LVD | > 0.65 | 58.0 | 77.8 | 92.7 | 27.5 | 61.3 | < 0.001 |
| mPA/AO | > 1 | 60.0 | 68.6 | 90.5 | 25.5 | 61.4 | 0.003 |
| IVCE | > 13.5 mm | 63.1 | 68.8 | 91.7 | 25.3 | 63.9 | 0.002 |
Note: Acc, accuracy; AO, aorta diameter; IVCE, inferior vena cava diameter of end-expiratory; mPA, main pulmonary artery diameter; Sen, sensitivity; Spe, specificity; TTE, transthoracic echocardiography.
Abbreviations: LVD, left ventricular diameter; LVEI, left ventricular eccentricity index; NPV, negative predictive value; PPV, positive predictive value; RAA, right atrial area; RVD, right ventricular diameter; RVOT-AT, right ventricular outflow tract acceleration time; sPAP, systolic pulmonary arterial pressure; TAPSE, tricuspid annular plane systolic excursion; TRV, tricuspid regurgitation velocity.
※The cutoff values recommended by guidelines.