Abnormal ultrasound findings relating pathophysiology and outcome of the low-lying placenta

Abstract

s / Placenta 36 (2015) A1eA14 A6 prospective study was to determine prenatal imaging findings that predict the presence of adherent placenta in pregnancies with placenta previa. Study design: The study included 58 consecutive pregnant women with placenta previa who underwent both ultrasonography and magnetic resonance imaging prenatally. Ultrasonographic findings of anterior placental location, grade 2 or higher placental lacunae (PL G2), loss of retroplacental hypoechoic clear zone (LCZ) and the presence of turbulent blood flow in the arteries were evaluated, in addition to MRI findings. Forty-three women underwent cesarean section alone; 15 women with adherent placenta underwent cesarean section followed by hysterectomy with pathological examination. To determine imaging findings that predict adherent placenta, univariate and multivariate logistic regression analyses were performed. Results: Univariate logistic regression analyses demonstrated that anterior placental location, PL G2, LCZ, and MRI were associatedwith the presence of adherent placenta. Multivariate analyses revealed that LCZ (p<0.01, odds ratio 15.6, 95%CI 2.1e114.6) was a single significant predictor of adherent placenta in women with placenta previa. Conclusion: This prospective study demonstrated for the first time that US findings, especially LCZ, might be useful for identifying patients at high risk for adherent placenta among pregnant women with placenta previa. JPA2015-19. ABNORMAL ULTRASOUND FINDINGS RELATING PATHOPHYSIOLOGY AND OUTCOME OF THE LOW-LYING PLACENTA Katsuhiko Naruse, Aiko Shigemitsu, Juria Akasaka, Chiharu Yoshimoto, Taihei Tsunemi, Toshiyuki Sado, Hiroshi Kobayashi. Department of Obstetrics and Gynecology, Nara Medical