Electronic poster abstractsResults: The normalized estimated placental and brain resistances were respectively increased and reduced in IUGR fetuses (Fig).There was a trend towards an increased placental compliance, and dilatation of the arteries while maintaining vascular elasticity. Conclusions: Individual IUGR fetuses show marked differences in their vascular components with a higher placental resistance as major determinant for the observed changes in measured Doppler flows. The proposed computational model seems to be a good approach to assess hemodynamic parameters than cannot be measured clinically.Supporting information can be found in the online version of this abstract P13.12 Objectives: To estimate the combined value of the cerebral Doppler with the Bishop Score predicting perinatal outcome after labour induction in late-onset intrauterine growth restricted (IUGR) fetuses with normal umbilical artery Doppler. Methods: We conducted this prospective study in two tertiary centers with women attending to labour induction because of an estimated fetal weight below 10th percentile with normal Umbilical artery Doppler. The middle cerebral artery pulsatility index (MCAPI) and CPR was obtained in all cases. Cervical conditions were always assessed at admission by the Bishop score. Very unfavourable cervix was defined as a Bishop score below two. A predictive model for perinatal outcomes was constructed using the Decision Tree Analysis algorithm (SPSS 20.0). Results: We finally included in the study164 patients. Abnormal CPR cohort presented an increase rate of overall Caesarean section with respect to the normal CPR (25% vs 12.8%;p = 0.017). Caesarean for fetal distress was required in 28 cases (17.1%) in the abnormal CPR group, while only in 12 patients (7.3%) of normal CPR group (p = 0.016). Neonatal admission was twice in the abnormal CPR cohort (37.1% vs 21.3%;p = 0.028). Bishop score below two was the best isolated predictor for overall Caesarean (OR 5.32; 95% CI 2.32 -12.17) and Caesarean for fetal distress (OR 3.18; 95% CI1.28 -7.86). A decision tree analysis for the risk of overall and fetal distress Caesarean, stratified the risk by cervical conditions and later by CPR. Rates of overall and fetal distress Caesarean were 60.7% and 39.3% in those patients with unfavorable cervix and abnormal CPR, while in those with favorable cervix and normal CPR Caesarean rates were 12.5% and 8.3% respectively. The presence of brain redistribution increase twice the risk of Caesarean and fetal distress Caesarean after the cervical assessment. Conclusions: The combined use of cervical conditions and cerebral Doppler improves the predictive ability of Caesarean after labour induction in late IUGR.