Poster discussion hub abstracts at 7 cm dilatation in primiparous and at 10 cm in multiparous. Proposed TPU cut-offs performed well to estimate the mode of delivery in occipito-anterior position, but not in occipito-posterior (OP) position.
Conclusions:The results strengthen previous studies regarding the feasibility of imagistic methods in establishing labour progress and anticipate potential complications. The sonopartogram proved to be a suitable alternative in assessing labour because it is well accepted, non-invasive and with minimal infectious risks. Ultrasound evaluation should be available in most delivery rooms.
P13.04The role of ultrasound in prediction of successful induction of labour V. Marsoosi, A. Jamal, L. Eslamian, S. Nejat Eslamifard
Obstetrics and Gynecology, Tehran University of Medical Sciences, Tehran, Islamic Republic of IranObjectives: The aim of this study was to evaluate the potential value of cervical length and posterior cervical angle measurement by transvaginal ultrasound and determination of the fetal head position by transabdominal ultrasound before induction of labour in prediction of successful induction of labour. Methods: In a prospective study of 298 singleton pregnancies who admitted for induction of labour, after informed consent maternal characteristics were recorded. Fetal head position assessed by TAS, cervical length and posterior cervical angle measured by TVS. We examined the value of pre induction ultrasound parameters in prediction of labour induction outcomes. Results: The cervical length measured by TVS was significantly shorter in patients who delivered vaginally in comparison with patients who delivered by Caesarean section due to the failure to progress.(18±5.7) versus (29.5±11) mm, respectively (p 0.001).The odds ratio for successful induction for occiput anterior was 1.75(CI 95%=1.064-2.878) and for OP was 0.455 ,(CI 95%=0.272-0.763).And risk ratio for OA was 1.243(1.033-1.4950); and for OP was0.701 (CI 95%=0.541-0.908).The mean of posterior cervical angle in patients delivered vaginally was 124±18; and in patients with failed induction was 100±20.5 (P 0.001). Conclusions: Using pre-induction ultrasound to determine fetal head position and cervical changes provides more precise information in comparison with Bishop score to predict the outcome of induction of labour, and enable clinicians to improve further management of pregnancy.
P13.05Can the ''dynamic'' assessment of intrapartum ultrasound parameters serve a better predictor for mode of delivery? Objectives: The angle of progression (AOP) and progression distance (PD), measured by transperineal ultrasound, have been used for assessment of fetal head descent during labour.Our aim was to assess the dynamic change of these parameters with uterine contraction and bearing down, and explore its ability to predict mode of delivery.
Methods:In this prospective observational study, we included nulliparas, in active first stage of labour for whom we obtained static and dynamic measures of AOP and PD using 2D ultras...
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