Vagal Withdrawal and Sympathetic Overactivity Contribute to the Genesis of Early-Onset Pregnancy-Induced Hypertension
Table 4
Comparison of HRV indices between early-onset PIH and late-onset PIH at different weeks of gestation.
HRV indices sat diff. weeks
Early onset PIH
Late onset PIH
values
At 12th week
TP (ms2)
75.80 ± 61.20
135.90 ± 82.20
.0291
LFnu
63.42 ± 25.30
52.40 ± 20.85
.1948
HFnu
34.50 ± 16.50
47.90 ± 20.50
.0554
LF-HF ratio
2.96 ± 1.70
1.80 ± 1.10
.0308
Mean RR (s)
0.61 ± 0.13
0.71 ± 0.097
.0211
SDNN (s)
0.020 ± 0.014
0.021 ± 0.019
.8694
RMSSD (ms)
21.95 ± 13.10
36.41 ± 20.26
.0263
At 24th week
TP (ms2)
70.80 ± 60.50
118.40 ± 75.20
.0630
LFnu
67.06 ± 30.08
54.08 ± 24.41
.1961
HFnu
30.75 ± 17.34
45.95 ± 20.10
.0324
LF-HF ratio
3.05 ± 1.80
2.02 ± 1.64
.1063
Mean RR (s)
0.59 ± 0.122
0.70 ± 0.083
.0062
SDNN (s)
0.022 ± 0.011
0.022 ± 0.005
.9999
RMSSD (ms)
17.75 ± 8.01
23.96 ± 15.22
.1700
At 31st week
TP (ms2)
58.30 ± 42.65
98.70 ± 69.10
.0769
LFnu
74.46 ± 32.83
60.05 ± 28.15
.2139
HFnu
24.40 ± 15.60
39.80 ± 19.02
.0266
LF-HF ratio
3.84 ± 1.50
2.50 ± 1.15
.0112
Mean RR (s)
0.58 ± 0.11
0.67 ± 0.093
.0242
SDNN (s)
0.021 ± 0.016
0.023 ± 0.004
.6316
RMSSD (ms)
12.65 ± 6.20
22.86 ± 13.10
.0157
The values are mean ± SD; The -values depicted in the last column indicate comparison between early-onset and late-onset PIH groups. The indicates comparison with the 12th week value of RMSSD in early-onset group. ; ( in early-onset group at the 31st week).
