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Electronic poster abstractsupon labour ward admission. The Wharton's jelly area (WJA) was calculated as the difference between the total umbilical cord area (UCA) and the vascular area. The WJA/birthweight and the UCA/birthweight ratio were compared between women who underwent an OI (i.e. Caesarean section, operative vaginal deliveries or intrapartum resuscitation) for suspected fetal compromise (group OI) and those where this was not necessary (group no OI). The correlation between the total deceleration area during labour and the WJA/birthweight and the UCA/ birthweight ratio was also assessed. Results: Overall, 185 women were included. Table 1 illustrates the maternal and labour characteristics between the two groups. The UCA/birthweight ratio did not differ between the two groups (0.6 ± 0.1 versus 0.5 ± 0.2 cm 2 /mg p = 0.07) as well as the WJA/ birthweight (0.4 ± 0.1 cm 2 /mg versus 0.3 ± 0.1; p = 0.06). Also, no correlation was found between the total deceleration area in labour and both the WJA/birthweight and the UCA/birthweight ratio. Conclusions: A lower thickness of the umbilical cord does not seem to represent a risk factor for suspected fetal compromise during active labour.

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Oral communication abstractsResults: Simple Rules had a sensitivity of 92% and specificity of 90.6% while classifying adnexal masses. As per original cut-off value of 10% ADNEX model had an AUC of 0.932 (0.858-1), with a sensitivity of 92% (74-99) and specificity of 87.5% (77-94). For polytomous classification, ADNEX model had the best performance at differentiating benign from advanced (stage II-IV) primary tumours. At cut-off 10%, LR1 had an AUC of 0.878 (0.719-1), sensitivity of 88% (69-97), specificity of 93.8% (85-98) and LR2 had an AUC of 0.960 (0.92-0.999), with a sensitivity of 84% (64-95) and specificity of 93.8% (85-98). At original cut-off value of 200 for RMI 3, AUC was 0.941 (0.888-0.993), with a sensitivity of 68% (46-85) and specificity of 93.8% (85-98). Conclusions: ADNEX model and LR2 have a great potential and highly promising results to modify the conventional management protocol for adnexal masses. The polytomous classification proposed in the ADNEX model is first of its kind. It could be used as an initial screening tool by examiners with limited expertise in ultrasonography.

Fetuses conceived by intra-cytoplasmatic sperm injection (ICSI) and complicated by fetal growth restriction (FGR) are characterised by a different phenotype of cardiac remodelling. We present a case in which both conditions, ICSI and late FGR, were present. An echocardiographic study of the fetal cardiac geometry showed the presence of a globular heart with sphericity indices of both ventricles values < 5th centile, not associated with dilated heart, as present in ICSI fetuses. The possible pathophysiological changes of these findings are discussed.