Valve
|
Size
|
n
|
Peak gradient (mm Hg)
|
Mean gradient (mm Hg)
|
Peak velocity (m/s)
|
Effective orifice area (cm2)
|
ATS open pivot AP ATS open pivot (bileaflet)
|
16
|
6
|
47.7 ± 12
|
27 ± 7.3
|
3.44 ± 0.47
|
0.61 ± 0.09
|
19
|
9
|
47 ± 12.6
|
26.2 ± 7.9
|
3.41 ± 0.43
|
0.96 ± 0.18
|
21
|
15
|
25.5 ± 6.1
|
14.4 ± 3.5
|
2.4 ± 0.39
|
1.58 ± 0.37
|
23
|
8
|
19 ± 7
|
12 ± 4
|
|
1.8 ± 0.2
|
25
|
12
|
17 ± 8
|
11 ± 4
|
|
2.2 ± 0.4
|
27
|
10
|
14 ± 4
|
9 ± 2
|
|
2.5 ± 0.3
|
29
|
5
|
11 ± 3
|
8 ± 2
|
|
3.1 ± 0.3
|
Biocor stentless (stentless bioprosthesis)
|
21
|
45
|
35.97 ± 4.06
|
18 ± 4
|
|
|
23
|
115
|
29.15 ± 8.28
|
18.64 ± 7.14
|
3 ± 0.6
|
1.4 ± 0.5
|
25
|
100
|
28.65 ± 6.6
|
17.72 ± 6.99
|
2.8 ± 0.5
|
1.6 ± 0.38
|
27
|
55
|
25.87 ± 2.81
|
18 ± 2.8
|
2.7 ± 0.2
|
1.9 ± 0.46
|
≥29
|
16
|
24 ± 2
|
|
|
|
Biocor extended stentless (stentless bioprosthesis)
|
19–21
|
12
|
17.5 ± 5.8
|
9.7 ± 3.5
|
|
1.3 ± 0.4
|
23
|
18
|
14.8 ± 5.9
|
8.1 ± 3.1
|
|
1.6 ± 0.3
|
25
|
20
|
14.2 ± 3.5
|
7.7 ± 1.9
|
|
1.8 ± 0.3
|
Bioflo pericardial (stented bioprosthesis)
|
19
|
16
|
37.25 ± 8.65
|
24.15 ± 5.1
|
|
0.77 ± 0.11
|
21
|
9
|
28.7 ± 6.2
|
18.7 ± 5.5
|
|
1.1 ± 0.1
|
23
|
4
|
20.7 ± 4
|
125 ± 3
|
|
1.3 ± 0.09
|
Björk-Shiley monostrut (tilting disk)
|
19
|
37
|
46.0
|
26.67 ± 7.87
|
3.3 ± 0.6
|
0.94 ± 0.19
|
21
|
161
|
32.41 ± 9.73
|
18.64 ± 6.09
|
2.9 ± 0.4
|
|
23
|
153
|
26.52 ± 9.67
|
14.5 ± 6.2
|
2.7 ± 0.5
|
|
25
|
89
|
22.33 ± 7
|
13.3 ± 4.96
|
2.5 ± 0.4
|
|
27
|
61
|
18.31 ± 8
|
10.41 ± 4.38
|
2.1 ± 0.4
|
|
29
|
9
|
12 ± 8
|
7.67 ± 4.36
|
1.9 ± 0.2
|
|
Björk-Shiley spherical (tilting disk) or not specified
|
17
|
1
|
|
|
4.1
|
|
19
|
2
|
27.0
|
21.8 ± 3.4
|
3.8
|
1.1
|
21
|
18
|
38.94 ± 11.93
|
17.34 ± 6.86
|
2.92 ± 0.88
|
1.1 ± 0.25
|
23
|
41
|
33.86 ± 11
|
11.5 ± 4.55
|
2.42 ± 0.4
|
1.22 ± 0.23
|
25
|
39
|
20.39 ± 7.07
|
10.67 ± 4.31
|
2.06 ± 0.28
|
1.8 ± 0.32
|
27
|
23
|
19.44 ± 7.99
|
|
1.77 ± 0.12
|
2.6
|
29
|
5
|
21.1 ± 7.1
|
|
1.87 ± 0.18
|
2.52 ± 0.69
|
31
|
2
|
|
|
2.1 ± 0.14
|
|
Carbomedics (bileaflet)
|
17
|
7
|
33.4 ± 13.2
|
20.1 ± 7.1
|
|
1.02 ± 0.2
|
19
|
63
|
33.3 ± 11.19
|
11.61 ± 5.08
|
3.09 ± 0.38
|
1.25 ± 0.36
|
21
|
111
|
26.31 ± 10.25
|
12.68 ± 4.29
|
2.61 ± 0.51
|
1.42 ± 0.36
|
23
|
120
|
24.61 ± 6.93
|
11.33 ± 3.8
|
2.42 ± 0.37
|
1.69 ± 0.29
|
25
|
103
|
20.25 ± 8.69
|
9.34 ± 4.65
|
2.25 ± 0.34
|
2.04 ± 0.37
|
27
|
57
|
19.05 ± 7.04
|
8.41 ± 2.83
|
2.18 ± 0.36
|
2.55 ± 0.34
|
29
|
6
|
12.53 ± 4.69
|
5.8 ± 3.2
|
1.93 ± 0.25
|
2.63 ± 0.38
|
Carbomedics reduced (bileaflet)
|
19
|
10
|
43.4 ± 1.8
|
24.4 ± 1.2
|
|
1.22 ± 0.08
|
Carbomedics supraannular top hat (bileaflet)
|
19
|
4
|
29.04 ± 10.1
|
19.5 ± 2.12
|
1.8
|
1 ± 0.18
|
21
|
30
|
29.61 ± 8.93
|
16.59 ± 5.79
|
2.62 ± 0.35
|
1.18 ± 0.33
|
23
|
30
|
24.38 ± 7.53
|
13.29 ± 3.73
|
2.36 ± 0.55
|
1.37 ± 0.37
|
25
|
1
|
22.0
|
11.0
|
2.4
|
|
Carpentier-Edwards (stented bioprosthesis)
|
19
|
56
|
43.48 ± 12.72
|
25.6 ± 8.02
|
|
0.85 ± 0.17
|
21
|
73
|
27.73 ± 7.6
|
17.25 ± 6.24
|
2.37 ± 0.54
|
1.48 ± 0.3
|
23
|
100
|
28.93 ± 7.49
|
15.92 ± 6.43
|
2.76 ± 0.4
|
1.69 ± 0.45
|
25
|
85
|
23.95 ± 7.05
|
12.76 ± 4.43
|
2.38 ± 0.47
|
1.94 ± 0.45
|
27
|
50
|
22.14 ± 8.24
|
12.33 ± 5.59
|
2.31 ± 0.39
|
2.25 ± 0.55
|
29
|
24
|
22.0
|
9.92 ± 2.9
|
2.44 ± 0.43
|
2.84 ± 0.51
|
31
|
4
|
|
|
2.41 ± 0.13
|
|
Carpentier-Edwards pericardial (stented prosthesis)
|
19
|
14
|
32.13 ± 3.35
|
24.19 ± 8.6
|
2.83 ± 0.14
|
1.21 ± 0.31
|
21
|
34
|
25.69 ± 9.9
|
20.3 ± 9.08
|
2.59 ± 0.42
|
1.47 ± 0.36
|
23
|
20
|
21.72 ± 8.57
|
13.01 ± 5.27
|
2.29 ± 0.45
|
1.75 ± 0.28
|
25
|
5
|
16.46 ± 5.41
|
9.04 ± 2.27
|
2.02 ± 0.31
|
|
27
|
1
|
19.2
|
5.6
|
1.6
|
|
29
|
1
|
17.6
|
11.6
|
2.1
|
|
Carpentier-Edwards supraannular AV (stented bioprosthesis)
|
19
|
15
|
34.1 ± 2.7
|
|
1.1 ± 0.09
|
|
21
|
8
|
25 ± 8
|
14 ± 5
|
|
1.06 ± 0.16
|
CryoLife O'Brien stentless (stentless prothesis)
|
19
|
47
|
|
12 ± 4.8
|
|
1.25 ± 0.1
|
21
|
163
|
|
10.33 ± 2
|
|
1.57 ± 0.6
|
23
|
40
|
|
8.5
|
|
2.2
|
25
|
40
|
|
7.9
|
|
2.3
|
27
|
39
|
|
7.4
|
|
2.7
|
Duromedics (Tekna; bileaflet)
|
19
|
1
|
|
|
3.6
|
|
21
|
3
|
19.08 ± 16
|
8.98 ± 5
|
|
1.3
|
23
|
12
|
19.87 ± 7
|
7 ± 2
|
2.64 ± 0.27
|
|
25
|
18
|
21 ± 9
|
5 ± 2
|
2.34 ± 0.38
|
|
27
|
15
|
22.5 ± 12
|
6 ± 3
|
1.88 ± 0.6
|
|
29
|
1
|
13.0
|
3.4
|
2.1
|
|
Edwards Prima stentless (stentless bioprosthesis)
|
19
|
7
|
30.9 ± 11.7
|
15.4 ± 7.4
|
|
1 ± 0.3
|
21
|
30
|
31.22 ± 17.35
|
16.36 ± 11.36
|
|
1.25 ± 0.29
|
23
|
62
|
23.39 ± 10.17
|
11.52 ± 5.26
|
2.8 ± 0.4
|
1.49 ± 0.46
|
25
|
97
|
19.74 ± 10.36
|
10.77 ± 9.32
|
2.7 ± 0.3
|
1.7 ± 0.55
|
27
|
46
|
15.9 ± 7.3
|
7.1 ± 3.7
|
|
2 ± 0.6
|
29
|
11
|
11.21 ± 8.6
|
5.03 ± 4.53
|
|
2.49 ± 0.52
|
Hancock I (stented bioprosthesis)
|
21
|
1
|
|
|
3.5
|
|
23
|
14
|
19.09 ± 4.35
|
12.36 ± 3.82
|
2.94 ± 0.24
|
|
25
|
26
|
17.61 ± 3.13
|
11 ± 2.85
|
2.36 ± 0.37
|
|
27
|
20
|
18.11 ± 6.92
|
10 ± 3.46
|
2.4 ± 0.36
|
|
29
|
2
|
|
|
2.23 ± 0.04
|
|
31
|
1
|
|
|
2.0
|
|
Hancock II (stented bioprosthesis)
|
21
|
39
|
20 ± 4
|
14.8 ± 4.1
|
|
1.23 ± 0.27
|
23
|
119
|
24.72 ± 5.73
|
16.64 ± 6.91
|
|
1.39 ± 0.23
|
25
|
114
|
20 ± 2
|
10.7 ± 3
|
|
1.47 ± 0.19
|
27
|
113
|
14 ± 3
|
|
|
1.55 ± 0.18
|
29
|
35
|
15 ± 3
|
|
|
1.6 ± 0.15
|
Ionescu-Shiley (stented bioprosthesis)
|
17
|
11
|
42.0
|
21.1 ± 3.21
|
|
0.86 ± 0.1
|
19
|
63
|
23.17 ± 6.58
|
20.44 ± 8.47
|
2.63 ± 0.32
|
1.15 ± 0.18
|
21
|
11
|
27.63 ± 8.34
|
15.1 ± 1.56
|
2.75 ± 0.25
|
|
23
|
5
|
18.09 ± 6.49
|
9.9 ± 2.85
|
2.1 0.38
|
|
25
|
1
|
18.0
|
|
|
|
27
|
3
|
14.75 ± 2.17
|
8.97 ± 0.57
|
1.92 ± 0.14
|
|
29
|
1
|
16.0
|
7.3
|
2.0
|
|
Jyros bileaflet (bileaflet)
|
22
|
4
|
17.3
|
10.8
|
|
1.5
|
24
|
7
|
18.6
|
11.4
|
|
1.5
|
26
|
8
|
14.4
|
8.4
|
|
1.7
|
28
|
3
|
10.0
|
5.7
|
|
1.9
|
30
|
1
|
8.0
|
6.0
|
|
1.6
|
Lillehei-Kaster (tilting disk)
|
14
|
1
|
|
|
2.7
|
|
16
|
2
|
|
|
3.43 ± 0.39
|
|
18
|
2
|
|
|
2.85 ± 0.21
|
|
20
|
1
|
|
|
1.7
|
|
Medtronic Freestyle stentless (stentless bioprosthesis)
|
19
|
11
|
|
13.0
|
|
|
21
|
85
|
|
7.99 ± 2.6
|
|
1.6 ± 0.32
|
23
|
141
|
|
7.24 ± 2.5
|
|
1.9 ± 0.5
|
25
|
164
|
|
5.35 ± 1.5
|
|
2.03 ± 0.41
|
27
|
105
|
|
4.72 ± 1.6
|
|
2.5 ± 0.47
|
Medtronic-Hall (tilting disk)
|
20
|
24
|
34.37 ± 13.06
|
17.08 ± 5.28
|
2.9 ± 0.4
|
1.21 ± 0.45
|
21
|
30
|
26.86 ± 10.54
|
14.1 ± 5.93
|
2.42 ± 0.36
|
1.08 ± 0.17
|
23
|
27
|
26.85 ± 8.85
|
13.5 ± 4.79
|
2.43 ± 0.59
|
1.36 ± 0.39
|
25
|
17
|
17.13 ± 7.04
|
9.53 ± 4.26
|
2.29 ± 0.5
|
1.9 ± 0.47
|
27
|
8
|
18.66 ± 9.71
|
8.66 ± 5.56
|
2.07 ± 0.53
|
1.9 ± 0.16
|
29
|
1
|
|
|
1.6
|
|
Medtronic intact (stented bioprosthesis)
|
19
|
16
|
39.43 ± 15.4
|
23.71 ± 9.3
|
2.5
|
|
21
|
55
|
33.9 ± 12.69
|
18.74 ± 8.03
|
2.73 ± 0.44
|
1.55 ± 0.39
|
23
|
110
|
31.27 ± 9.62
|
18.88 ± 6.17
|
2.74 ± 0.37
|
1.64 ± 0.37
|
25
|
41
|
27.34 ± 10.59
|
16.4 ± 6.05
|
2.6 ± 0.44
|
1.85 ± 0.25
|
27
|
16
|
25.27 ± 7.58
|
15 ± 3.94
|
2.51 ± 0.38
|
2.2 ± 0.17
|
29
|
5
|
31.0
|
15.6 ± 2.1
|
2.8
|
2.38 ± 0.54
|
Medtronic Mosaic, porcine (stented bioprosthesis)
|
21
|
51
|
|
12.43 ± 7.3
|
|
1.6 ± 0.7
|
23
|
121
|
|
12.47 ± 7.4
|
|
2.1 ± 0.8
|
25
|
71
|
|
10.08 ± 5.1
|
|
2.1 ± 1.6
|
27
|
30
|
|
9.0
|
|
|
29
|
6
|
|
9.0
|
|
|
Mitroflow (stented bioprosthesis)
|
19
|
4
|
18.7 ± 5.1
|
10.3 ± 3
|
|
1.13 ± 0.17
|
21
|
7
|
20.2
|
15.4
|
2.3
|
|
23
|
5
|
14.04 ± 4.91
|
7.56 ± 3.38
|
1.85 ± 0.34
|
|
25
|
2
|
17 ± 11.31
|
10.8 ± 6.51
|
2 ± 0.71
|
|
27
|
3
|
13 ± 3
|
6.57 ± 1.7
|
1.8 ± 0.2
|
|
O'Brien-Angell stentless (annular position; stentless bioprosthesis)
|
23
|
|
|
14.5 ± 7.77
|
|
1.15 ± 0.07
|
25
|
50
|
|
19 ± 12.72
|
|
1.12 ± 0.25
|
27
|
|
|
18 ± 12.72
|
|
1.55 ± 0.21
|
29
|
|
|
12 ± 7.07
|
|
2.05 ± 1.2
|
O'Brien-Angell stentless (supraannular position; stentless bioprosthesis)
|
23
|
|
|
9 ± 1.4
|
|
1.58 ± 0.58
|
25
|
50
|
|
7.5 ± 0.7
|
|
2.37 ± 0.18
|
27
|
|
|
8.5 ± 0.7
|
|
2.85 ± 0.87
|
29
|
|
|
7 ± 1.4
|
|
2.7 ± 0.42
|
Omnicarbon (tilting disk)
|
21
|
71
|
36.79 ± 12.59
|
19.4 ± 5.46
|
2.93 ± 0.47
|
1.25 ± 0.43
|
23
|
83
|
29.33 ± 9.67
|
17.98 ± 6.06
|
2.66 ± 0.44
|
1.49 ± 0.34
|
25
|
81
|
24.29 ± 7.71
|
13.51 ± 3.85
|
2.32 ± 0.38
|
1.94 ± 0.52
|
27
|
40
|
19.63 ± 4.34
|
12.06 ± 2.98
|
2.08 ± 0.35
|
2.11 ± 0.46
|
29
|
5
|
17.12 ± 1.53
|
10 ± 1.53
|
1.9 ± 0.06
|
2.27 ± 0.23
|
Omniscience (tilting disk)
|
19
|
2
|
47.5 ± 3.5
|
28 ± 1.4
|
|
0.81 ± 0.01
|
21
|
5
|
50.8 ± 2.8
|
28.2 ± 2.17
|
|
0.87 ± 0.13
|
23
|
8
|
39.8 ± 8.7
|
20.1 ± 5.1
|
|
0.98 ± 0.07
|
On-X (bileaflet)
|
19
|
6
|
21.3 ± 10.8
|
11.8 ± 3.4
|
|
1.5 ± 0.2
|
21
|
11
|
16.4 ± 5.9
|
9.9 ± 3.6
|
|
1.7 ± 0.4
|
23
|
23
|
15.9 ± 6.4
|
8.5 ± 3.3
|
|
2 ± 0.6
|
25
|
12
|
16.5 ± 10.2
|
9 ± 5.3
|
|
2.4 ± 0.8
|
27–29
|
8
|
11.4 ± 4.6
|
5.6 ± 2.7
|
|
3.2 ± 0.6
|
Sorin Allcarbon (tilting disk)
|
19
|
7
|
44 ± 7
|
29 ± 8
|
3.3 ± 0.3
|
0.9 ± 0.1
|
21
|
25
|
36.52 ± 9.61
|
21.07 ± 6.72
|
2.93 + 0.2
|
1.08 ± 0.19
|
23
|
37
|
34.97 ± 10.97
|
18.72 ± 6.49
|
2.9 ± 0.41
|
1.31 ± 0.2
|
25
|
23
|
22 ± 4.68
|
13.85 ± 3.97
|
2.37 ± 0.23
|
1.96 ± 0.71
|
27
|
13
|
16.3 ± 3.3
|
10.15 ± 3.76
|
2 ± 0.25
|
2.51 ± 0.57
|
29
|
4
|
13 ± 4
|
8 ± 2
|
1.8 ± 0.3
|
4.1 ± 0.7
|
Sorin Bicarbon (bileaflet)
|
19
|
19
|
29.53 ± 4.46
|
16.35 ± 1.99
|
2.5 ± 0.1
|
1.36 ± 0.13
|
21
|
70
|
24.52 ± 7.1
|
12.54 ± 3.3
|
2.46 ± 0.31
|
1.46 ± 0.2
|
23
|
71
|
17.79 ± 6.1
|
9.61 ± 3.3
|
2.11 ± 0.24
|
1.98 ± 0.23
|
25
|
40
|
18.46 ± 3.1
|
10.05 ± 1.6
|
2.25 ± 0.19
|
2.39 ± 0.29
|
27
|
8
|
12 ± 3.25
|
7 ± 1.5
|
1.73 ± 0.21
|
3.06 ± 0.47
|
29
|
4
|
9 ± 1.25
|
5 ± 0.5
|
1.51 ± 0.1
|
3.45 ± 0.02
|
Sorin Pericarbon (stentless bioprosthesis)
|
23
|
15
|
39 ± 13
|
25 ± 8
|
|
2.0
|
St. Jude Medical (bileaflet)
|
19
|
100
|
35.17 ± 11.16
|
18.96 ± 6.27
|
2.86 ± 0.48
|
1.01 ± 0.24
|
21
|
207
|
28.34 ± 9.94
|
15.82 ± 5.67
|
2.63 ± 0.48
|
1.33 ± 0.32
|
23
|
236
|
25.28 ± 7.89
|
13.77 ± 5.33
|
2.57 ± 0.44
|
1.6 ± 0.43
|
25
|
169
|
22.57 ± 7.68
|
12.65 ± 5.14
|
2.4 ± 0.45
|
1.93 ± 0.45
|
27
|
82
|
19.85 ± 7.55
|
11.18 ± 4.82
|
2.24 ± 0.42
|
2.35 ± 0.59
|
29
|
18
|
17.72 ± 6.42
|
9.86 ± 2.9
|
2 ± 0.1
|
2.81 ± 0.57
|
31
|
4
|
16.0
|
10 ± 6
|
2.1 ± 0.6
|
3.08 ± 1.09
|
St. Jude Medical Hemodynamic Plus (bileaflet)
|
19
|
19
|
25.81 ± 7.52
|
16.44 ± 3.57
|
|
1.65 ± 0.2
|
21
|
30
|
18.9 ± 7.31
|
9.62 ± 3.37
|
|
2.15 ± 0.29
|
Starr-Edwards (ball-and-cage)
|
21
|
5
|
29.0
|
|
|
1.0
|
22
|
2
|
|
|
4
|
|
23
|
22
|
32.6 ± 12.79
|
21.98 ± 8.8
|
3.5 ± 0.5
|
1.1
|
24
|
43
|
34.13 ± 10.33
|
22.09 ± 7.54
|
3.35 ± 0.48
|
|
26
|
29
|
31.83 ± 9.01
|
19.69 ± 6.05
|
3.18 ± 0.35
|
|
27
|
14
|
30.82 ± 6.3
|
18.5 ± 3.7
|
|
1.8
|
29
|
8
|
29 ± 9.3
|
16.3 ± 5.5
|
|
|
Stentless porcine xenograft (stentless bioprosthesis)
|
21
|
3
|
14 ± 5
|
8.7 ± 3.5
|
|
1.33 ± 0.38
|
22
|
3
|
16 ± 5.6
|
9.7 ± 3.7
|
|
1.32 ± 0.48
|
23
|
4
|
13 ± 4.8
|
7.7 ± 2.3
|
|
1.59 ± 0.6
|
24
|
3
|
13 ± 3.8
|
7.7 ± 2.2
|
|
1.4 ± 0.01
|
25
|
6
|
11.5 ± 7.1
|
7.4 ± 4.5
|
|
2.13 ± 0.7
|
26
|
3
|
10.7
|
7 ± 2.1
|
|
2.15 ± 0.2
|
27
|
1
|
9.2
|
5.5
|
|
3.2
|
28
|
1
|
7.5
|
4.1
|
|
2.3
|
Toronto stentless, porcine (stentless bioprosthesis)
|
20
|
1
|
10.9
|
4.6
|
|
1.3
|
21
|
9
|
18.64 ± 11.8
|
7.56 ± 4.4
|
|
1.21 ± 0.7
|
22
|
1
|
23.0
|
|
|
1.2
|
23
|
84
|
13.55 ± 7.28
|
7.08 ± 4.33
|
|
1.59 ± 0.84
|
25
|
190
|
12.17 ± 5.75
|
6.2 ± 3.05
|
|
1.62 ± 0.4
|
27
|
240
|
9.96 ± 4.56
|
4.8 ± 2.33
|
|
1.95 ± 0.42
|
29
|
200
|
7.91 ± 4.17
|
3.94 ± 2.15
|
|
2.37 ± 0.67
|