Table 3 Hemodynamic variables at rest and during maximal stress (n = 61)

Heart rate (beat/min):

63 ± 11

109 ± 21

< 0.001

CO (l/min):

5.5 ± 1.4

10.2 ± 3.2

< 0.001

Peak gradient (mmHg):

15.9 ± 9.2

38.3 ± 19.8

< 0.001

Mean gradient mmHg):

8.0 ± 4.8

18.7 ± 10.0

< 0.001

EOA (cm²):

2.0 ± 0.7

2.2 ± 0.8

ns

EOA index (cm²/m²):

1.1 ± 0.4

1.2 ± 0.4

ns

Performance index:

0.55 ± 0.16

0.59 ± 0.20

ns

Ejection fraction (%):

57.8 ± 10.5

69.1 ± 8.6

< 0.001