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MRI prognosticators for adverse maternal and neonatal clinical outcome in patients at high risk for placenta accreta spectrum (PAS) disorders

Journal of Magnetic Resonance Imaging Jul 18, 2019

Bourgioti C, et al. - Since placenta accreta spectrum (PAS) disorders could be linked to significant mortality and morbidity for both mother and fetus, therefore, through a prospective study, the researchers intended to recognize MRI risk factors for poor peripartum result in gravid subjects at risk for PAS. One hundred gravid women who were at the third trimester, with placenta previa were recruited in this study. Remarkable agreement between MRI and intraoperative findings for the invasive placenta, bladder, and parametrial involvement was found. For both mother and fetus, intraplacental T2 dark bands, myometrial disruption, uterine bulge, and hypervascularity at the uteroplacental interface or parametrium, demonstrated a notable correlation with poor clinical results. For each adverse maternal event, the MRI score presented vital predictive ability. For a complicated delivery, the presence of ≥3 MRI signs was the cutoff point and for massive bleeding, hysterectomy or extensive bladder repair, ≥6 MRI signs was the cutoff point. For prognosticating adverse neonatal events including preterm delivery, low birth weight, and 5-minute Apgar score, the MRI score was non-significant in nature. Hence, in high-risk cases, preoperative identification of specific MRI features could prognosticate the peripartum course for PAS.
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