Edward C. Wells

OC19.04: Validation of the placenta accreta index by ultrasound to predict morbidly adherent placenta

5 patients had acute Caesarean section. Mean Apgar values were 7.9/8.8/9.4, mean pH was 7.25. Fetomaternal survival was 100%. Final diagnosis was placenta accreta for 10 (26.3%) and inor percreta for 28 (73.7%) patients. The degree of invasiveness did not progress in 3rd trimester, no significant difference between presence or severity of the assessed US signs was found (p > 0.16 for all). The estimated AIP probability during 2nd and 3rd trimester correlated highly with the final diagnosis (r 0.72 and 0.8, p<0.0002 for both). Conclusions: Placental invasiveness does not progress significantly over the course of the 3rd trimester. Irrespective of time US diagnosis significantly correlates with the final diagnosis (r > 0.7, p< 0.0002). Bleeding or preterm labour might make earlier delivery necessary, but the majority (87%) of our patients delivered on chosen schedule (>34 week of gestation). Therefore the recommended delivery in week 34–37 seems feasible, thus avoiding unnecessary neonatal morbidity.