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Table 3 Fetal HRV parameters and CTG indices in the study population

From: Autonomic imbalance captures maternal and fetal circulatory response to pre-eclampsia

Index

Group I

Group II

Group III

SDNN, ms

45.8 ± 13.1

29.4 ± 8.3*

10.2 ± 4.5*⁄†

RMSSD, ms

22.4 ± 3.4

14.2 ± 2.6*

8.1 ± 0.8*⁄†

pNN5O, %

4.2 ± 1.1

2.0 ± 0.4*

1.1 ± 0.3*⁄†

AMo, %

39.6 ± 14.1

50.2 ± 11.6*

65.9 ± 13.4*/†

SI, c.u.

169.3 ± 42.7

496.1 ± 65.8*

1467.3 ± 405.8*⁄†

TP, ms2

1513.6 ± 329.1

896.2 ± 163.5*

424.9 ± 93.7*⁄†

VLF, ms2

1252.8 ± 248.3

692.8 ± 91.3*

251.8 ± 44.2*⁄†

LF, ms2

184.3 ± 26.5

151.9 ± 34.1*

135.0 ± 19.6*⁄†

HF, ms2

77.6 ± 9.4

53.6 ± 8.2*

38.9 ± 10.4*⁄†

STV, ms

7.5 ± 2.8

6.0 ± 2.2*

4.1 ± 1.6*⁄†

LTV, ms

21.9 ± 7.1

16.1 ± 5.8*

12.6 ± 4.3*⁄†

Number of accelerations

4.2 ± 1.8

2.7 ± 1.3*

1.2 ± 0.4*⁄†

Number of decelerations

0.3 ± 0.1

1.5 ± 0.4*

2.8 ± 0.9*⁄†

  1. Abbreviations: SDNN the standard deviation of normal to normal intervals, RMSSD the root mean square of successive heartbeat interval differences, pNN50 the proportion of NN pairs differing by more than 50 ms divided by the total number of NNs, AMo the mode amplitude (the most frequent value of NN interval or the highest column in the histogramm) – the number of NN intervals included in the pocket corresponding to mode measured in percentages (%), SI the stress index SI = AMo (%)/(2 × Mo × Var); Var = NNmax – NNmin, TP the total power, VLF the very low frequency, LF the low frequency, HF the high frequency
  2. *the differences were statistically significant compared to Group I (p < 0.05)
  3. †the differences were statistically significant compared to Group II (p < 0.05)
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Clinical Hypertension

ISSN: 2056-5909

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