SAFE AND RELIABLE TRANSABDOMINAL FETAL OXIMETRY

摘要

Systems and methods are described, and one method includes determining a fetal blood oxygenation level, including: activating at least one light source with at least two distinct wavelengths of light on an abdomen of a pregnant mammal to direct light into a maternal abdomen toward a fetus; receiving a set of mixed signals from a set of photodetectors positioned at different locations on the maternal abdomen from reflected light that traverses maternal tissue or maternal tissue and fetal tissue; determining the fetal blood oxygenation level by performing computations on a composite fetal signal produced from the mixed signals; and ensuring a skin temperature of the maternal abdomen does not rise to unsafe levels due to activating the at least one light source.