EP01.33: Examination of fetal breathing movements following magnesium sulphate treatment to the mother using artificial intelligence

Fetal breathing movements are one of the indicators for assessing fetal well-being. We have previously reported on the visualisation and quantification of fetal breathing movements using artificial intelligence. In this report, we present our study on fetal breathing movements in cases of maternal administration of magnesium sulphate. We collected the data of 80 singleton fetal examinations between 25 and 36 weeks of gestation. Of these, 20 cases received magnesium sulphate for the prevention of preterm birth. We recorded the fetal breathing movements for 30 seconds, focusing on the fetal trunk (±30 degrees where the descending aorta appears horizontal). We created the dataset by dividing the videos into 3150 still images, annotated the diaphragm, and developed a diaphragm detection model. Moreover, we visualised the movement of respiration by graphing the trajectory of its centre of gravity shift (see figure 1). Furthermore, we compared the distance moved per second between the two groups. The average gestational ages for the normal and treated groups were 30.5 and 30.3 weeks, respectively. In comparing the distance moved by the diaphragm's centroid, the median and interquartile range for the normal and administration groups were 28.8 (26.8-30.8) mm/s and 23.5 (21.5-25.5) mm/s, respectively, showing a tendency to decrease in the administration group. This study suggests that fetal breathing movements may decrease in cases of maternal administration of magnesium sulphate. Since breathing movements are part of the assessment of fetal well-being, perinatal management considering the impact related to magnesium sulphate treatment may be required. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.