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Abstract #4301

Late-term Prenatal MRI for Evaluating Maternal Changes and their Correlation with Supine Hypotension Syndrome for Cesarean Section

Rui Ma1, TaoTao Sun2, and Feifei Qu3
1Department of Anesthesiology, International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, ShangHai, China, 2Department of Radiology, International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University, ShangHai, China, 3Siemens Healthineers, MR Research Collaboration, ShangHai, China

Synopsis

Keywords: Uterus, Prenatal, Supine hypotension syndrome, Gynecology

Motivation: Effectively preventing supine hypotension syndrome (SHS) is difficult due to the lack of sufficient in vivo abdominal MRI data.

Goal(s): This study aimed to retrospectively analyze the changes in the quantitative parameters of maternal MRI in late pregnancy to identify potential predictors of SHS.

Approach: By examining late-term prenatal MRI scans, we observed changes in several quantitative parameters.

Results: The abdominal–right uterine surface area ratio, dural sac anteroposterior diameter, ratio of epidural space anteroposterior diameter to dural sac, anteroposterior diameter, and left and right vertebral vein short-axis measurements were found to be helpful in determining SHS.

Impact: Late-term prenatal MRI can fully display the changes in maternal structure, providing a method for preoperative prediction of SHS after anesthesia.

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