Need statement \- a new way to distinguish between a healthy small fetus and a small fetus suffering from deprivation of nutrition and oxygen to prevent unnecessary induction of preterm birth and improve neonatal outcome. Aim - to characterize fetal heart rate variability (fHRV) based on fetal ECG in the normal fetus and in the fetus suffering from growth retardation to evaluate its value and applicability as a supplementary tool in fetal surveillance. Aim of current study \- To evaluate the feasibility of NI-FECG from gestational week 20 and onwards and investigate if important factors as length and heart rate pattern affects repeatability of time domain and spectral analyses in fetuses.
Study Type
OBSERVATIONAL
Enrollment
75
No direct intervention, as the study is observational.
Arhus Universityhospital
Aarhus, Aarhus N, Denmark
Standard deviation of normal to normal RR-interval (SDNN)
Time domain analysis, measured in ms
Time frame: 01.04.2020
Root mean square of successive RR-interval differences (RMSSD)
Time domain analysis, measured in ms
Time frame: 01.04.2020
Low frequency power (LF-power)
Spectral analysis, measured in ms\^2
Time frame: 01.04.2020
High frequency power (HF-power)
Spectral analysis, measured in ms\^2
Time frame: 01.04.2020
LF-power/HF-power
Spectral analysis, ratio
Time frame: 01.04.2020
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