Echocardiographically measured indices of left ventricular diastolic function, at rest and during exercise, for 19 mm, 21 mm, and 23 mm pericardial bioprosthetic valves and bileaflet prostheses in the aortic position
| 19 mm | 21 mm | ||||||
|---|---|---|---|---|---|---|---|
| M | B | Total | M | B | Total | ||
| A (cm/s) (***) | |||||||
| Rest (‡) | 87 (29) | 100 (28) | 96 (28) | 88 (16) | 100 (20) | 95 (18) | |
| Exercise (NS) | 92 (27) | 117 (31) | 110 (31) | 103 (22) | 107 (21) | 105 (21) | |
| E (cm/s) (***) | |||||||
| Rest (†) | 94 (18) | 91 (15) | 92 (15) | 94 (17) | 89 (19) | 92 (18) | |
| Exercise (NS) | 105 (21) | 108 (19) | 107 (19) | 109 (33) | 112 (26) | 111 (29) | |
| A/E (NS) | |||||||
| Rest (‡‡) | 0.92 (0.21) | 1.14 (0.39) | 1.07 (0.36) | 0.97 (0.10) | 1.15 (0.22) | 1.07 (0.20) | |
| Exercise (NS) | 0.90 (0.28) | 1.12 (0.38) | 1.06 (0.37) | 1.01 (0.20) | 0.99 (0.30) | 1.00 (0.26) | |
| TDE (mm/s) (*** †) | |||||||
| Rest (NS) | 206 (25) | 179 (78) | 189 (67) | 180 (45) | 218 (48) | 202 (50) | |
| Exercise (NS) | 150 (19) | 125 (59) | 132 (51) | 142 (48) | 158 (51) | 151 (49) | |
| IVRT (ms) (***) | |||||||
| Rest (†) | 100 (10) | 96 (14) | 100 (14) | 100 (15) | 108 (13) | 105 (14) | |
| Exercise (‡) | 82 (13) | 79 (12) | 80 (12) | 79 (17) | 88 (13) | 85 (16) | |
| 23 mm | Overall | |||||
|---|---|---|---|---|---|---|
| M | B | Total | M | B | Total | |
| 74 (21) | 90 (20) | 80 (22) | 82 (22) | 98 (23) | 90 (24) | |
| 95 (32) | 100 (23) | 97 (29) | 97 (29) | 109 (26) | 103 (28) | |
| 82 (18) | 77 (21) | 80 (19) | 89 (18) | 87 (19) | 88 (18) | |
| 99 (28) | 98 (18) | 95 (25) | 104 (29) | 105 (23) | 104 (26) | |
| 0.96 (0.28) | 1.20 (0.19) | 1.05 (0.28) | 0.95 (0.21) | 1.16 (0.29) | 1.06 (0.27) | |
| 1.01 (0.30) | 1.14 (0.14) | 1.06 (0.26) | 0.99 (0.26) | 1.08 (0.31) | 1.04 (0.29) | |
| 213 (45) | 193 (50) | 205 (47) | 200 (44) | 198 (62) | 199 (54) | |
| 159 (41) | 137 (27) | 151 (38) | 151 (41) | 142 (50) | 146 (46) | |
| 97 (14) | 104 (13) | 100 (14) | 100 (14) | 103 (13) | 102 (14) | |
| 76 (12) | 86 (15) | 80 (14) | 78 (14) | 85 (14) | 82 (14) | |
Values are mean (SD).
Differences between resting and exercise values: ***p < 0.001.
Differences between prosthesis sizes: †p < 0.05.
Differences between mechanical and biological prostheses: ‡p < 0.05;‡‡p < 0.01.
A, A wave velocity; B, bioprosthesis; E, E wave velocity; IVRT, isovolumic relaxation time; M, mechanical; TDE, E wave deceleration time.