A Coupling Analysis Method of Fetal Heart Rate and Uterine Contraction Signal

Abstract

The invention discloses a coupling analysis method for fetal heart rates and uterine contraction signals. The coupling analysis method is implemented by the aid of a signal input module, a signal preprocessing module, a coupling parameter calculation module and a parameter output module. The signal input module is responsible for receiving the fetal heart rates and the uterine contraction signalswhich are measured by fetal heart rate monitoring instruments, the signal preprocessing module is responsible for carrying out cubic spline interpolation repair and band-pass filtering processing on abnormal values of received signals, cross power spectra, coherence spectra and coupling parameters of the fetal heart rates and the uterine contraction signals can be calculated by the coupling parameter calculation module, and the parameter output module is responsible for outputting calculation results. The coupling analysis method has the advantages that intrauterine movement conditions of fetuses can be analyzed by the aid of multivariate time series coupling analysis technologies, the cross power spectra and the coherence spectra can be fused with one another to quantitatively evaluate the coupling degrees between the fetal heart rates and the uterine contraction signals, accordingly, the shortcomings of incomplete univariate information and inaccurate analysis can be effectively overcome, and the intrauterine movement conditions of the fetuses can be comprehensively and accurately evaluated by the aid of the coupling analysis method.

Description

technical field [0001] The invention belongs to a physiological parameter analysis method, in particular to a coupling analysis method of fetal heart rate and uterine contraction signals. Background technique [0002] Fetal movement, fetal heart rate and uterine contraction signals are important physiological parameters for pregnant women to observe the fetal condition. Fetal movement is the activity of the fetus in the mother's uterus. The fetal heart rate is the heartbeat rate of the fetus. The uterine contraction signal is the pressure signal of the mother's abdominal wall or the envelope signal of the uterine myoelectric power spectrum caused by fetal movement and uterine contraction. During fetal movement, there is often a short-term increase in fetal heart rate and changes in maternal abdominal pressure and uterine myoelectricity. The number, speed, and strength of fetal movement indicate the safety of the fetus in the mother's body. When the placenta is insufficient ...

AI Technical Summary

Problems solved by technology

Since the fetal heart rate is affected by various factors such as exercise and circadian rhythm, and the signal of uterine contraction is affected by maternal exertion, breathing, and body position changes, the quantitative evaluation of fetal activity by fetal heart rate or uterine contraction signal alone has inaccurate estimates. technical problems

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