Kazuo Maeda Author

Research Article Open Access

Improved Fetal Heart Rate Study Using Update Actocardiogram

Author(s):

Kazuo Maeda

Aims: To precisely diagnose Fetal Heart Rate (FHR) with actocardiogram (ACG), which is the simultaneous record of FHR and movement signal spikes. Method: Low frequency ultrasonic Doppler signal of fetal movement and high frequency Doppler of fetal heart beat were detected with single ultrasonic probe, and separated into two groups by a new electric circuit. FHR was recorded by autocorrelation heart rate meter, and fetal chest movement was changed to spikes, and their chart record was ACG. Results: Whole body fetal movements were recorded, because fetal body movements were conducted to fetal chest and recoded. Movement spike amplitude was parallel to fetal movement. FHR increased if fetus moved with 7 sec delay. FHR acceleration was associated with fetal movement burst, moderate movement... view more»

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