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Valve

Size

Peak Gradient (mm Hg)

Mean Gradient (mm Hg)

Peak Velocity (m/s)

Pressure Half-Time (ms)

Effective Orifice Area (cm2)

Biocor

27

13 ± 1

Stentless bioprosthesis

29

14 ± 2.5

31

11.5 ± 0.5

33

12 ± 0.5

Bioflo pericardial

25

10 ± 2

6.3 ± 1.5

2 ± 0.1

Stented bioprosthesis

27

9.5 ± 2.6

5.4 ± 1.2

2 ± 0.3

29

5 ± 2.8

3.6 ± 1

2.4 ± 0.2

31

4.0

2.0

2.3

Bjork-Shiley

23

1.7

115

Tilting disc

25

12 ± 4

6 ±2

1.75 ± 0.38

99 ± 27

1.72 ± 0.6

27

10 ± 4

5 ±2

1.6 ± 0.49

89 ± 28

1.81 ± 0.54

29

7.83 ± 2.93

2.83 ± 1.27

1.37 ± 0.25

79 ± 17

2.1 ± 0.43

31

6 ± 3

2 ± 1.9

1.41 ± 0.26

70 ± 14

2.2 ± 0.3

Bjork-Shiley monostrut

23

5.0

1.9

Tilting disc

25

13 ± 2.5

5.57 ± 2.3

1.8 ± 0.3

27

12 ± 2.5

4.53 ± 2.2

1.7 ± 0.4

29

13 ± 3

4.26 ± 1.6

1.6 ± 0.3

31

14 ± 4.5

4.9 ± 1.6

1.7 ± 0.3

Carbomedics

23

1.9 ± 0.1

126 ± 7

Bileaflet

25

10.3 ± 2.3

3.6 ± 0.6

1.3 ± 0.1

93 ± 8

2.9 ± 0.8

27

8.79 ± 3.46

3.46 ± 1.03

1.61 ± 0.3

89 ± 20

2.9 ± 0.75

29

8.78 ± 2.9

3.39 ± 0.97

1.52 ± 0.3

88 ± 17

2.3 ± 0.4

31

8.87 ± 2.34

3.32 ± 0.87

1.61 ± 0.29

92 ± 24

2.8 ± 1.14

33

8.8 ± 2.2

4.8 ± 2.5

1.5 ± 0.2

93 ± 12

Carpentier- Edwards

27

6 ± 2

1.7 ± 0.3

98 ± 28

Stented bioprosthesis

29

4.7 ± 2

1.76 ± 0.27

92 ±14

31

4.4 ± 2

1.54 ± 0.15

92 ± 19

33

6 ± 3

93 ± 12

Carpentier- Edwards pericardial

27

3.6

1.6

100

Stented Bioprosthesis

29

5.25 ± 2.36

1.67 ± 0.3

110 ± 15

31

4.05 ± 0.83

1.53 ± 0.1

90 ± 11

33

1.0

0.8

80

Duromedics

27

13 ± 6

5 ± 3

1.61 ± 0.4

75 ± 12

Bileaflet

29

10 ± 4

3 ± 1

1.40 ± 0.25

85 ± 22

31

10.5 ± 4.33

3.3 ± 1.36

1.38 ± 0.27

81 ± 12

33

11.2

2.5

85

Hancock I or not specified

27

10 ± 4

5 ± 2

1.3 ± 0.8

Stented bioprosthesis

29

7 ± 3

2.46 ± 0.79

115 ± 20

1.5 ± 0.2

31

4 ± 0.86

4.86 ± 1.69

95 ± 17

1.6 ± 0.2

33

3 ± 2

3.87 ± 2

90 ± 12

1.9 ± 0.2

Hancock II

27

2.21 ± 0.14

Stented bioprosthesis

29

2.77 ± 0.11

31

2.84 ± 0.1

33

3.15 ± 0.22

Hancock pericardial

29

2.61 ± 1.39

1.42 ± 0.14

105 ± 36

Stented bioprosthesis

31

3.57 ± 1.02

1.51 ± ...

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