Table 1.
Fetal heart rate (FHR) and middle cerebral artery pulsatility index (MCA-PI) according to type of stimulus and time
| Baseline US | Stimulus ON | Stimulus OFF | p Value (difference baseline–ON) | p Value (difference baseline–OFF) | |
|---|---|---|---|---|---|
| FHR (M ± SD) | |||||
| IV music | 143.7 ± 8.6 | 150.3 ± 12.2 | 148.2 ± 8.6 | ||
| IV vibration | 150.3 ± 12.2 | 146.7 ± 8.7 | 145.6 ± 9.4 | 0.003 | 0.008 |
| AB music | 148.2 ± 8.6 | 147.9 ± 8.9 | 143.2 ± 7.5 | ||
| P value | 0.04 | 0.206 | 0.105 | ||
| MCA-PI (M ± SD) | |||||
| IV music | 1.98 ± 0.32 | 1.77 ± 0.25 | 1.74 ± 0.26 | ||
| IV vibration | 1.95 ± 0.34 | 1.85 ± 0.33 | 1.99 ± 0.44 | 0.204 | 0.061 |
| AB music | 1.87 ± 0.55 | 1.82 ± 0.45 | 1.79 ± 0.44 | ||
| P value | 0.636 | 0.724 | 0.188 | ||
Note: IV: intravaginal; AB: abdominal.
Comparisons by analysis of variance (ANOVA). Individual data for the difference between each stimulation period were calculated and compared by type of device by ANOVA.