FETAL MOVEMENT MONITORING PROTYPE DESIGN BASED ON NON-INVASIVE FETAL ELECTROCARDIOGRAM (NI FECG)

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Ida Widiawati
Rika Resmana
Santi Sofiyanti
Selli Novita
Amirudin Amirudin

Abstract

Background: Fetal movements during pregnancy at 30 to 39 weeks are more often than at 20 to 29 weeks of gestation, this is because the frequently fetus moves the endometrium and the strength of fetal movement increases with fetal development. Non-invasive fetal electrocardiogram (NI-FECG) can be used in early pregnancy, easy to apply, and safe to use. This research aims to develop a prototype design of a fetal movement recording device based on NI-FECG


Methods: Research and development (R&D) are used to develop certain products and test the effectiveness of the product. The analysis uses literature review and qualitative tests.


Results: The various distances between the electrodes and the position of the intrauterine fetus can affect the results so that they are taken into consideration in placing the electrodes in the right position. The position of the electrode shown in the image above is recommended in the cephalic position of the fetus in late pregnancy, taking into account the reduced freedom of movement of the fetus. The use of this belt aims to monitor fetal movement with electrocardiography (ECG) at rest and while the patient is moving. The maternal abdominal signal generator used asthe processor; the processor read the maternal abdominal ECG data (CU1, 2 and 3) and output three-channel ECG signals through digital-to-analog conversion. The three-lead abdominal signals, were sent to the data receiving end of the smartphone app software, and the data processing module, processed the received data. The processed fetal ECG and heart rate were displayed on the smartphone, screen in real time.


Conclusion: The need for a proper system to monitor fetal movements in a non-clinical setup is of paramount importance in order to maintain fetal well-being. A complete system was introduced to be used by pregnant While a significant amount of effort was spent on developing the algorithm as well as the sensing system an equal amount of effort was invested in designing and implementing proper ergonomics and a user-friendly interface to the system. It was made sure that the proposed system is feasible to be implemented.

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