Mother health includes health during pregnancy and childbirth. Each step during pregnancy should have a positive experience and ensure that their women and their children reach their entire ability in health and well-being. However, it cannot be achieved always. According to the UNFPA (UN Population Fund), around 800 women die each day due to pregnancy and childish reasons, so it is important to monitor the health of the mother and fetus during pregnancy. Many portable sensors and equipment are designed to monitor both fetal and mother's health and physical activities and reduce the risk during pregnancy. Some wearables monitor fetal ECG or heart rate and movement, while others focus on the mother’s health and physical activities. This study presents a systematic review of these analyses. Twelve scientific articles were reviewed to address three research questions oriented to sensors and methods of data acquisition, processing methods of the acquired data, and detection of the activities or movements of the fetus or the mother. Based on these findings, we discuss how sensors can help effectively monitor maternal and fetal health during pregnancy. We have observed that most of the wearable sensors were used in a controlled environment. These sensors need more testing in free-living conditions and to be employed for continuous monitoring before being recommended for mass implementation.
FECG, FHR, fetal movement, m-health, PPG, wearable sensors
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