Table 3 Comparison of RV echocardiographic structural and functional parameters between the CTEPH patient and control groups

RV structural parameters

 RVD (mm)

44.25 ± 7.25

32.04 ± 2.26

0.002

 LVD (mm)

33.88 ± 2.90

35.25 ± 2.38

0.317

 RVD/LVD

1.31 ± 0.26

0.91 ± 0.04

0.001

 EI

1.36 ± 0.12

1.06 ± 0.29

 < 0.001

 Dmpap (mm)

30.68 ± 5.49

25.37 ± 1.50

0.020

RV function parameters

 RVLS (%)

−17.13 ± 3.01

−23.80 ± 3.06

0.001

 TAPSE (mm)

16.50 ± 2.76

19.91 ± 1.48

0.008

 RV FAC (%)

28.28 ± 8.66

41.62 ± 2.44

0.003

 RIMP

0.72 ± 0.21

0.47 ± 0.04

0.005

 S’ (cm/s)

8.95 ± 1.15

13.02 ± 2.33

0.001