Title: OP25.05: Sonographic markers for placenta accreta in the first trimester: are they reliable?
Abstract:To assess the diagnostic utility of sonographic markers for placenta accreta in the first trimester. Retrospective case control study of women with a history of prior Cesarean delivery. Ten blinded re...To assess the diagnostic utility of sonographic markers for placenta accreta in the first trimester. Retrospective case control study of women with a history of prior Cesarean delivery. Ten blinded reviewers analyzed first trimester images from 30 cases: 10 with placenta accreta and 20 without accreta. Data were collected on placental location and the presence of markers for placenta accreta. Provider suspicion for accreta and possible effect on documenting, managing and counseling were scored on a scale of 1 to 10. Markers for placenta accreta and their corresponding sensitivities, specificities, positive and negative predictive values and likelihood ratios are shown in Table 1. Suspicion for accreta was significantly increased based on sonographic findings and in combination with surgical history (5.6 vs. 3.9 and 6.7 vs. 5.0, respectively; P < 0.001). The likelihood of commenting on placental appearance (7.2 vs. 5.3), desire for additional studies (6.4 vs. 4.9) and counseling about accreta (6.4 vs. 4.5) were all significantly increased is cases of accreta (P < 0.001). OP25.05: Table Sonographic markers of placenta accreta are present as early as the first trimester. In high-risk populations identifying such markers may allow for earlier investigation, diagnosis, counseling and treatment planning.Read More