Key result
Photoplethysmography (PPG) overcomes almost all of the drawbacks of other non-invasive fetal heart rate monitoring methods and deserves the most attention in future biomedical research.
This review suggests that photoplethysmography (PPG) is the most promising non-invasive technique for fetal heart rate monitoring, overcoming the drawbacks of other established methods.
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PPG merits prioritized research for fetal heart rate monitoring; leaves open clinical adoption pending prospective validation.
Fetal heart rate monitoring is a process carried out during pregnancy and/or labor to keep track of the fetal heart rate and in some devices the uterine contractions. A variety of techniques has been studied and is used on a daily basis in many hospitals. This review discusses and compares the operating principle, the key signal processing techniques, advantages and drawbacks of five of those techniques: fetal electrocardiography (FECG) using abdominal surface electrodes, photoplethysmography (PPG) using near infrared (NIR) light, Doppler ultrasound, ultrasound based cardiotocography (CTG) known as electronic fetal monitoring and fetal magnetocardiography (FMCG). The review leads to the conclusion that the PPG overcomes almost all of the drawbacks of the other methods and thus deserves the most attention in future biomedical research.
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Abdulhay et al. (2014) conducted a review in Fetal heart rate monitoring. Photoplethysmography (PPG) vs. Other non-invasive monitoring techniques (FECG, Doppler ultrasound, CTG, FMCG) was evaluated. Photoplethysmography (PPG) overcomes almost all of the drawbacks of other non-invasive fetal heart rate monitoring methods and deserves the most attention in future biomedical research.
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