Table 2 Optimal thresholds (determined by Youden’s index) with prognostic metrics

LV ejection fraction (%)

59

0.23 (0.16, 0.31)

0.86

(0.81, 0.9)

0.47

(0.34, 0.59)

0.68

(0.62, 0.73)

0.52 (0.45, 0.58)

1.83

(1.03, 3.25)

LV basal width (cm)

4.4

0.56 (0.47, 0.65)

0.68

(0.62, 0.74)

0.48 (0.40 0.57)

0.74

(0.68, 0.8)

0.61 (0.54, 0.67)

2.67

(1.68, 4.26)

Tricuspid annular plane systolic excursion (TAPSE) (cm)

1.98

0.57 (0.47, 0.66)

0.71

(0.66, 0.78)

0.52 (0.43, 0.6)

0.76

(0.7, 0.81)

0.66 (0.59, 0.72)

3.35

(2.06, 5.30)

Right ventricle

mid-width (cm)

3.5

0.64 (0.56, 0.73)

0.6 (0.53, 0.66)

0.46 (0.38, 0.54)

0.76

(0.69, 0.82)

0.64 (0.58, 0.7)

2.68

(1.68, 4.28)

RV/LV basal

width ratio

1.08

0.64 (0.56, 0.73)

0.6 (0.55, 0.66)

0.49 (0.41, 0.57)

0.78 (0.71, 0.84)

0.66 (0.59, 0.72)

3.32

(2.07, 5.33)

Initial BNP level (pg/mL)

190

0.59 (0.50, 0.68)

0.67

(0.60, 0.73)

0.49 (0.40, 0.57)

0.75

(0.69, 0.82)

0.66 (0.60, 0.72)

2.89

(1.81, 4.62)

RV free wall systolic excursion velocity S', cm/s

10.10

0.72 (0.64, 0.8)

0.52 (0.46, 0.59)

0.45 (0.37, 0.52)

0.78

(0.71, 0.85)

0.61 (0.55, 0.68)

2.85

(1.75, 4.63)

TAPSE/RVSP ratio cm/mmHg

0.05

0.79 (0.72, 0.87)

0.48 (0.41, 0.55)

0.45 (0.38, 0.52)

0.81

(0.74, 0.88)

0.65 (0.59, 0.71)

3.52

(2.09, 5.94)

Right ventricle basal width (cm)

3.9

0.83 (0.76, 0.9)

0.38 (0.31, 0.44)

0.41 (0.35, 0.48)

0.8

(0.72, 0.88)

0.61 (0.55, 0.68)

2.85

(1.64, 4.97)

Tricuspid regurg peak velocity, m/s

2.50

0.95 (0.91, 0.99)

0.1 (0.06, 0.14)

0.36 (0.31, 0.41)

0.79 (0.63, 0.94)

0.55 (0.49, 0.61)

2.06 (0.81, 5.24)

RV/major length (cm)

5.20

1 (1, 1)

0.09 (0.05, 0.13)

0.37 (0.32, 0.42)

1 (1, 1)

0.51 (0.45, 0.57)

0.83