Table 1 Mean values of peak and time to peak twist and untwist-rate at the endocardial level.
Mean ± SD | Peak twist endocardial (degrees) | Time to peak twist (ms) | Peak untwist-rate endocardial (degrees/s) | Time to peak untwist-rate (ms) |
|---|---|---|---|---|
Volunteers at rest | 17 ± 11 | 393 ± 180 | -140 ± 58 | 495 ± 194 |
Volunteers at 10 mcg of dobutamine | 26 ± 7 (p = 0.03) | 247 ± 49 (p = 0.007) | -282 ± 100 (p = 0.01) | 342 ± 56 (p = 0.03) |
Volunteers at 20 mcg of dobutamine | 30 ± 15 (p = 0.001) | 238 ± 54 (p = 0.003) | -356 ± 179 (p = 0.005) | 324 ± 57 (p = 0.01) |