Table 5 Log-rank test of survival and cumulative incidence of weaning from MV depending on the presence or absence of an abnormal RV echocardiography parameter
Echocardiography parameters | Mean survival time, days | Mean time to weaning from MV, days | ||||
|---|---|---|---|---|---|---|
Patients with a normal parameter | Patients with an abnormal parameter | p | Patients with a normal parameter | Patients with an abnormal parameter | p | |
Abnormal cut-off values based on literature (Ref. [7]) | ||||||
TAPSE < 12 mm | 25.5 ± 0.9 | 18.3 ± 3.4 | 0.005* | 13.6 ± 1.4 | 13.6 ± 2.4 | 0.32 |
RV FAC < 35% | 25.5 ± 1.0 | 22.4 ± 2.2 | 0.24 | 13.4 ± 1.6 | 15.8 ± 2.5 | 0.43 |
S′ < 11.5 cm/s | 25.1 ± 1.3 | 23.9 ± 1.6 | 0.21 | 13.7 ± 1.8 | 13.9 ± 1.8 | 0.75 |
Abnormal cut-off values based on 2015 EACVI/ASE guidelines (Ref. [4]) | ||||||
TAPSE < 17 mm | 25.3 ± 1.1 | 23.4 ± 1.8 | 0.31 | 13.6 ± 1.7 | 14.9 ± 2.3 | 0.57 |
RV FAC < 35% | 25.5 ± 1.0 | 22.4 ± 2.2 | 0.24 | 13.4 ± 1.6 | 15.8 ± 2.5 | 0.43 |
S′ < 9.5 cm/s | 24.7 ± 1.1 | 24.2 ± 1.8 | 0.57 | 14.5 ± 1.5 | 10.2 ± 2.0 | 0.55 |
Abnormal cut-off values derived from control patients (mean ± 2SD) | ||||||
RV STE-derived parameters | ||||||
RV inferior LSS > − 17.6% | 25.3 ± 1.2 | 23.7 ± 1.6 | 0.57 | 13.7 ± 1.8 | 14.6 ± 2.0 | 0.78 |
RV lateral LSS > − 17.8% | 25.1 ± 1.1 | 23.9 ± 1.7 | 0.94 | 15.8 ± 1.9 | 11.4 ± 1.5 | 0.13 |
RV septal LSS > − 11.1% | 25.4 ± 1.1 | 22.6 ± 2.1 | 0.24 | 14.5 ± 1.6 | 11.2 ± 1.5 | 0.68 |
RV global LSS > − 17.4% | 24.2 ± 1.5 | 25.0 ± 1.3 | 0.44 | 14.8 ± 2.2 | 13.5 ± 1.6 | 0.60 |
RV global LSR > − 1.02 | 25.0 ± 1.0 | 22.7 ± 2.8 | 0.48 | 14.2 ± 1.4 | 14.6 ± 3.8 | 0.97 |