Table 1 Hemodynamic characterisitcs of main pulmonary artery in the three groups.

Main pulmonary artery

Mean ± SD

Mean ± SD

Mean ± SD

echoPASP, mmHg

30.3 ± 15.6

74.0 ± 35.8

70.5 ± 29.2

mean PAP, mmHg

48.1 ± 27.8

41.7 ± 14.5

area, max, cm2

6.6 ± 1.7

14.4 ± 5.6

12.3 ± 5.0

distensibility, %

24.9 ± 8.7

17.9 ± 11.8

14.4 ± 9.2

flow rate, mL/min

5791.2 ± 1286.0

7143.9 ± 5393.7

4586.0 ± 1580.6

peak velocity, cm/s

46.7 ± 7.6

29.5 ± 17.5

23.3 ± 11.4

accelerate time, ms

232.0 ± 25.3

211.3 ± 44.5

171.2 ± 39.9

Pulse wave velocity, m/s

2.0 ± 1.0

3.5 ± 1.9

3.4 ± 1.5

vortex, number

3.5 ± 3.0

12.1 ± 8.2

13.0 ± 8.2

vortex, duration, s

0.17 ± 0.13

0.28 ± 0.13

0.22 ± 0.09

resistance (PVR), dyne.s.cm-5

16.3 ± 6.6

24.7 ± 14.9

39.9 ± 21.0