Table 2. Heart rate variability indexes (standard deviation of normal-to-normal beat (SDNN) and root mean squared successive differences of R-R intervals (RMSSD)) and baroreceptor reflex sensitivity (BRS) in preeclampsia groups vs. controls.
| Preeclampsia | Controls | |||||
|---|---|---|---|---|---|---|
|
all (n = 24) |
Early-onset (GA < 34+0 weeks) (n = 10) |
Late-onset (GA ≥ 34+0 weeks) (n = 14) |
all (n = 72) |
GA<34+0
weeks (n = 30) |
GA ≥34+0
weeks (n = 42) |
|
| Hr (bpm) | 81.2 ± 12.2 | 83.6 ± 10.8 | 79.4 ± 13.2 | 83.3 ± 9.4 | 85.4 ± 10.0 | 81.8 ± 8.9 |
| SDNN (ms) | 41.0 ± 16.1 | 33.2 ± 10.7 | 46.5 ± 17.4 b | 36.5 ± 11.2 | 35.2 ± 9.9 | 37.1 ± 12.2 |
| RMSSD (ms) | 26.8 ± 17.3 a | 17.7 ± 9.5 | 33.3 ± 18.9 b | 20.5 ± 9.4 | 19.9 ± 10.3 | 21.0 ± 8.9 |
| ln (LFRRI) (ms2) | 5.76 ± 0.91 | 5.28 ± 0.81 | 6.11 ± 0.83 | 5.67 ± 0.81 | 5.58 ± 0.77 | 5.74 ± 0.83 |
| ln (HFRRI) (ms2) | 5.11 ± 1.19 | 4.44 ± 1.18 | 5.58 ± 0.98 b | 4.84 ± 0.94 | 4.81 ± 0.96 | 4.87 ± 0.93 |
| ln (LF/HFRRI) (-) | 0.65 ± 0.84 | 0.84 ± 1.13 | 0.52 ± 0.57 | 0.83 ± 0.73 | 0.77 ± 0.77 | 0.88 ± 0.70 |
| BRS (ms/mmHg) | 11.7 ± 6.4 | 9.1 ± 4.4 | 13.6 ± 7.0 b | 10.4 ± 4.2 | 10.3 ± 4.9 | 10.4 ± 3.8 |
GA gestational age
a denotes significant differences (p<0.05) between the preeclampsia group and controls (all)
b denotes significant differences (p<0.05) between subgroups of late- onset preeclampsia and ≥ 34 weeks controls