Table 3 Synchrony parameters pre- and post-PVR (n = 36)
Parameter | Pre-PVR | Post-PVR | P-value |
|---|---|---|---|
Left ventricle | |||
Longitudinal strain | |||
 Maximum difference in time-to-peak | 315 ± 185 | 351 ± 196 | 0.33 |
 Standard deviation of time-to-peak | 121 ± 73 | 139 ± 82 | 0.23 |
 Cross-correlation delay | 301 ± 218 | 340 ± 242 | 0.39 |
Circumferential strain: base | |||
 Maximum difference in time-to-peak | 233 ± 172 | 151 ± 120 | 0.01 |
 Standard deviation of time-to-peak | 89 ± 63 | 58 ± 48 | 0.02 |
 Cross-correlation delay | 217 ± 182 | 107 ± 77 | 0.0001 |
Circumferential strain: mid | |||
 Maximum difference in time-to-peak | 124 ± 75 | 107 ± 55 | 0.02 |
 Standard deviation of time-to-peak | 49 ± 27 | 43 ± 20 | 0.15 |
 Cross-correlation delay | 106 ± 113 | 77 ± 53 | 0.13 |
Circumferential strain: apex | |||
 Maximum difference in time-to-peak | 58 ± 46 | 47 ± 44 | 0.27 |
 Standard deviation of time-to-peak | 28 ± 22 | 23 ± 21 | 0.26 |
 Cross-correlation delay | 99 ± 146 | 42 ± 24 | 0.04 |
Right ventricle | |||
Longitudinal strain | |||
 Maximum difference in time-to-peak | 249 ± 176 | 337 ± 170 | 0.02 |
 Standard deviation of time-to-peak | 97 ± 70 | 128 ± 64 | 0.02 |
 Cross-correlation delay | 258 ± 171 | 254 ± 179 | 0.91 |
Circumferential strain: base | |||
 Maximum difference in time-to-peak | 361 ± 198 | 265 ± 155 | 0.01 |
 Standard deviation of time-to-peak | 136 ± 70 | 99 ± 59 | 0.004 |
 Cross-correlation delay | 342 ± 285 | 341 ± 286 | 0.56 |
Circumferential strain: mid | |||
 Maximum difference in time-to-peak | 214 ± 133 | 268 ± 179 | 0.11 |
 Standard deviation of time-to-peak | 96 ± 55 | 101 ± 66 | 0.73 |
 Cross-correlation delay | 268 ± 216 | 263 ± 224 | 0.93 |
Circumferential strain: apex | |||
 Maximum difference in time-to-peak | 95 ± 84 | 129 ± 97 | 0.047 |
 Standard deviation of time-to-peak | 43 ± 37 | 60 ± 43 | 0.03 |
 Cross-correlation delay | 119 ± 148 | 126 ± 145 | 0.82 |