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Author
Title Evaluating devices for the measurement of auditory-evoked fetal movement
URL
Publication Date
University/Publisher University of Western Ontario
Abstract Determining normal and abnormal fetal function in utero in order to better predict which fetuses are at risk for adverse outcome is critical. However, the medical imaging tools that could assist with diagnosis are very expensive and rarely available in the developing world. In this study, we developed a prototype audio-motio-tachograph (AMTG), which measures fetal movements through the recording of abdominal wall deformations and tested it in Rwanda. First, we showed that AMTG detected fetal signals and that fetuses respond to complex acoustic stimuli. In order to improve the sensitivity of the device, we then measured whole abdominal wall deformations in an automated way using a lab-based 3D optical measurement system, in which fringes are projected and the deflections recorded with a camera. We found that abdominal wall deformations can be measured accurately with a non-invasive measurement apparatus. Overall, we conclude that wearable modalities provide a promising alternative assessment capacity in fetal research, especially in low income countries.
Subjects/Keywords Audio-motio-tachograph (AMTG); evoked fetal movements; fetuses; acoustic stimuli; wearable electronics; optical tomography; Biomedical Devices and Instrumentation; Developmental Neuroscience; Other Neuroscience and Neurobiology
Language en
Country of Publication ca
Format application/pdf
Record ID oai:ir.lib.uwo.ca:etd-7666
Repository uwo
Date Retrieved
Date Indexed 2020-06-19

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…tracings (MTB) and fetal movements signals for one sensor. ......... 36 Figure 2-9 Fetal signal average: Fetal signals averaged across channels and sessions for the individual subjects. (A) top graph shows individual subjects and when…

…shown an important role in prenatal assessment of fetal neurobehavior and prediction of adverse neurological outcome (Kurjak et al., 2012). In their study,(Kurjak et al., 2012) they measured different isolated fetal movements (…

…movement has been used as indicators of fetal health status, with studies showing that decreased fetal movements may precede fetal demise (Concenço et al., 2017). Similarly, maternal perception of decreased fetal movements has been linked to poor…

…x29;. In addition to being a guide to general fetal health, fetal movements are particularly important for another aspect; musculoskeletal development (Nowlan, 2015). Decreased fetal movement is associated with neuromuscular disorders such as…

…musculoskeletal events in utero that occur later in neonatal life. There are a number of musculoskeletal conditions in which abnormal fetal movements (reduced or restricted) lead to an increase chance of fetal abnormality. Most common of these are the…

…measure of fetal brain function than movements in themselves. 1.6 Detecting fetal movement It is of great importance to choose an appropriate approach to study fetal behavior. In developmental psychology and obstetrics, multiple methods have been employed…

…to detect fetal movements from maternal perceptions to modern imaging techniques. Scientists and obstetricians rely on different methods for fetal movement monitoring which can be grouped and classified into active, passive and self-reported. Three…

…Furthermore, there is no widely accepted absolute definition of reduced fetal activity of alarm limits. Some women may also record passive fetal displacement, fetal breathing and Braxton Hicks’s contractions as fetal movements (Hertogs, Roberts, Cooper…

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