Obstetrics » Obstetrics 2nd And 3rd Trimester. Routine ultrasound screening in the second trimester is used to confirm gestation age, and to diagnose multiple pregnancy and major fetal malformation. Presentation This 18 year old woman, primigravida, presented for a routine antenatal scan at 31 weeks of gestation. Reasons for deviations from these recommendations should be documented. Reinar LM, Smedslund G, Fretheim A, Hofmann B, Thürmer H. Oslo, Norway: Knowledge Centre for the Health Services at The Norwegian Institute of Public Health (NIPH); 2008 Jun. Please note: your email address is provided to the journal, which may use this information for marketing purposes. Interventions 60 midwifery practices offered usual care (serial fundal height measurements with clinically indicated ultrasonography). The remaining 59 practices participated in the study until 29 February 2016. What A Third Trimester Ultrasound Cannot Reveal? With an α of 5% and 80% power, inclusion of 13 536 women was required. gmanegold@uhbs.ch PURPOSE: The detection … Third, to define the predictive performance for a LGA neonate of different EFW cut-offs on routine ultrasound examination at 35+0to36+6weeks’ gestation. In both strategies, women with suspected fetal growth restriction were referred to obstetrician led care for further diagnosis and management. We set the level of significance at P<0.05. Performed weekly if FGR is noted on ultrasound. View options for downloading these results. Table 1 shows the baseline characteristics of the participating midwifery practices. Policies for routine third trimester obstetrical ultrasound examinations differ among countries. (1) The study showed no difference in neonatal outcomes among women undergoing ultrasound scans versus women undergoing standard care. •The detection of fetal structural abnormalities is a routine part of antenatal care. Study design: Two university clinics using routine ultrasound screening in the third trimester were compared with seven county or district hospitals with no routine screening. Data from hospital files on fetuses with a suspected severe adverse perinatal outcome were used to analyse the level of adherence to the multidisciplinary protocol for diagnosing and managing fetal growth restriction. No significant differences were found in maternal morbidity and mortality between the groups (table 5). Epub 2020 Sep 20. Fetal Ultrasound www.healthlinkbc.ca [Accessed March 2019] Le Ray C, Morin L. 2009. Other secondary outcomes were the individual components of the perinatal and maternal composite outcomes and the secondary outcomes non-cephalic presentation at the start of labour in midwife led care and birth in midwife led or obstetrician led care. ABSTRACT Objective To examine the performance of the routine 11–13-week scan in detecting fetal non-chromosomal abnormalities. Fetal growth restriction is a risk factor for perinatal mortality and morbidity and cardiovascular disease and neurodevelopmental disorders in adulthood, Routine ultrasonography in the third trimester detects neonates who are small for gestational age (SGA) significantly more often than usual care using serial fundal height measurements combined with clinically indicated ultrasonography, Evidence that routine ultrasonography in the third trimester reduces the incidence of severe adverse perinatal outcomes is lacking, In low risk pregnancies, routine ultrasonography in the third trimester combined with clinically indicated ultrasonography was associated with greater antenatal detection of SGA neonates and induction of labour but was not associated with a reduction in severe adverse perinatal outcomes compared with usual care, Based on these findings, routine ultrasonography has no benefit (or harm) to the neonate but was associated with a moderately increased incidence of induction of labour, These findings do not support routine ultrasonography in the third trimester for low risk pregnancies. Table 3 shows the diagnostic accuracy for detecting SGA at birth (birth weight <10th centile) for both screening strategies. Salomon, J.-P. Bernard, Y. Ville. After the first randomisation in April 2015, one midwifery practice withdrew from the study because of time constraints. For every topic, specific questions were formulated (see Table 2 in Appendix). Dutch Association of Obstetrics and Gynaecology (NVOG)-guideline Fetal Growth Restriction (FGR), Dutch Association of Obstetrics and Gynaecology, Routine ultrasound in late pregnancy (after 24 weeks’ gestation), Value of a single early third trimester fetal biometry for the prediction of birth weight deviations in a low risk population, Evidence-based national guidelines for the management of suspected fetal growth restriction: comparison, consensus, and controversy. The scan is largely similar to the ones you had during the first and/or second trimesters of pregnancy. Also, we used registration data as an initial screening for potential severe adverse perinatal outcomes. Data from 13 024 (96.3%) women and neonates were linked to data in the Perined database. Perinatale Zorg in Nederland 2014. … gene disorders such as achondroplasia, thus providing a noninvasive tool for diagnosing skeletal dysplasia . It also aimed to determine whether the risk of morbidity in SGA fetuses was associated with other ultrasound markers of growth restriction. In some units in Sweden, a second ultrasound screening examination is offered in the third trimester to identify small‐for‐gestational age fetuses (SGA). Methods This was a retrospective study of prospectively collected data from 100997 singleton pregnancies attending for a routine ultrasound examination of In response to the challenges of assessing fetal growth in obese women, guidelines recommend routine third trimester ultrasound scans. Another explanation for our findings might be that the quality of ultrasound scans was too low. This study aimed to determine the diagnostic performance of routine third trimester ultrasound for detecting babies with estimated fetal weight < 10th centile (SGA). Although we found a difference of only 0.1% between the two strategies, it is unlikely that this difference would have met the preset meaningful difference of 0.54% had the sample size been larger. Would you like email updates of new search results? Time of inclusion, divided into four groups according to the crossover from usual care to the intervention strategy, was considered as a fixed factor. In a multilevel multivariable logistic regression adjusted for confounders, routine ultrasonography in the third trimester was associated with a higher incidence of induction of labour (1.16, 1.04 to 1.30) and a lower incidence of augmentation of labour (0.78, 0.71 to 0.85). Women in the intervention strategy had significantly more ultrasound scans than women in the control strategy (mean 2.04 (SD 0.75) v 0.88 (0.96), P<0.001). Six women did not fulfil the inclusion criteria and 797 refused to participate. How often do we identify fetal abnormalities during routine third-trimester ultrasound? Routine mid-trimester fetal ultrasound scan Consideration must be given to local circumstances and medical practices. Sonographers conducted third trimester biometry according to the guidelines of the Dutch Society of Obstetrics and Gynaecology (NVOG).2223 Sonographers who participated in the IRIS study were experienced in performing biometry and held a certificate for structural anomaly screening (73% of 154 participating sonographers) or passed a biometry quality test before the trial (27%), based on four biometry scans assessed by two experienced sonographers; had successfully completed a module on fetal biometry from a national Dutch medical e-learning education programme (see www.medicaleducation.nl); and used ultrasound equipment according to the standards of the Dutch Society of Obstetrics and Gynaecology.14 Two independent and experienced sonographers who were board members of the Dutch Professional Organisation of Sonographers carried out quality assessments of the sonographers during the trial. Nevertheless, our findings are in line with a previous meta-analysis, which failed to show better perinatal outcomes in women who received routine ultrasound scans after 24 weeks’ gestation, based on 13 previous trials (n=34 980).15. Optimal risk assessment of small-for-gestational-age fetuses … We defined a clinically significant reduction of severe adverse perinatal outcome in the intervention strategy as 1.54% to 1.0%. Ultrasound Obstet Gynecol. Of the pregnant women (n=107) referred to obstetrician led care because of a fetal abdominal circumference below the 10th centile, 97% (74 of 76) in the intervention strategy had additional ultrasound scans compared with 97% (30 of 31 women) receiving usual care. Pregnant women seem to appreciate a third trimester routine ultrasound, but it does not seem to reduce anxiety or to improve bonding with their baby. See: http://creativecommons.org/licenses/by-nc/4.0/. Obstetrics » Obstetrics 2nd And 3rd Trimester. Client organisations will be involved in communicating the findings of the study to the general public. Considering that these fetuses had EFW in the AGA range and were in a predominantly low risk … The Dutch Ministry of Health considered introducing routine ultrasonography in the third trimester of pregnancy but was unable to decide on the effectiveness of this screening approach owing to lack of evidence. Similar to the Pregnancy Outcome Prediction (POP) study, we found that sensitivity rates were higher for the intervention strategy with routine ultrasonography compared with usual care strategy with clinically indicated ultrasonography, although specificity rates were lower.11 Thus our findings suggest that repeated ultrasonography measures increase the detection of SGA but are also accompanied by higher false positive rates. Skråstad RB, Eik-Nes SH, Sviggum O, Johansen OJ, Salvesen KÅ, Romundstad PR, Blaas HG. In the intervention strategy, more SGA neonates (22%) had an abdominal circumference below the 10th centile compared with SGA neonates in the usual care strategy (13%; P<0.001). In this stepped wedge cluster randomised trial we evaluated the effectiveness of routine ultrasonography in the third trimester combined with usual care (ie, serial fundal height measurements with clinically indicated ultrasonography) in reducing severe adverse perinatal outcomes in low risk pregnancies compared with usual care alone. Routine Ultrasound in 3rd Trimester? JH, JW, and VV conducted data analyses. Midwifery practices formed the unit of cluster randomisation. After the 20 week anomaly screening had been conducted if desired, the women were invited to take part in the study. I've had an uneventful and easy pregnancy so far (31 weeks). J.J. Stirnemann, G. Benoist, L.J. AdJ, PJ, LV, VV, and JH were involved in the development, implementation, or data collection of the study. Various third trimester ultrasound markers have been investigated to predict small-for-gestational-age fetuses at risk of adverse perinatal outcome. The cluster randomised design controlled for unknown confounders at the cluster level and limited contamination between the study strategies, which might occur in individual randomised trials. At the onset of data collection on 1 February 2015 all the midwifery practices (n=60) carried out the control strategy, with a third sequentially crossing over to the intervention strategy at 3, 7, and 10 months (fig 1). BJOG. Prenatal ultrasound screening: false positive soft markers may alter maternal representations and mother-infant interaction [correction in: Performance of the ATLAS trigger system in 2015, Screening for fetal growth restriction using ultrasound and the sFLT1/PlGF ratio in nulliparous women: a prospective cohort study, Fetal movement counting for assessment of fetal wellbeing, Anatomopathological changes of the cardiac conduction system in sudden cardiac death, particularly in infants: advances over the last 25 years, Editorial: New approaches to the pathogenesis of sudden intrauterine unexplained death and sudden infant death syndrome, Effectiveness of routine third trimester ultrasonography to reduce adverse perinatal outcomes in low risk pregnancy (the IRIS study): nationwide, pragmatic, multicentre, stepped wedge cluster randomised trial, http://creativecommons.org/licenses/by-nc/4.0/, Lincolnshire Partnership NHS Foundation Trust: CAMHS Consultant Psychiatrist, Cambridgeshire and Peterborough NHS Foundation Trust: Consultant General Adult Community Psychiatry, Hertfordshire Partnership University NHS Foundation Trust: Consultant Perinatal Psychiatrist, Hertfordshire Partnership University NHS Foundation Trust: Consultant Psychiatrist in General Adult Community, Women’s, children’s & adolescents’ health. for undertaking this challenging study assessing the use of routine growth third trimester ultrasound in pregnancy in low risk women. routine ultrasound in the third trimester after two normal. Prediction of large for gestational age neonates by routine third trimester ultrasound Naila KHAN,1,2 Anca CIOBANU,3 Argyro SYNGELAKI,3 Ranjit AKOLEKAR,1,2 Kypros H. NICOLAIDES.3 Short title: Third trimester screening for LGA Key words: Third trimester screening; Large for gestational age; Estimated fetal weight; Fetal biometry; Symphysial-fundal height; Pyramid of pregnancy care. Effectiveness and cost-effectiveness of routine third trimester ultrasound screening for intrauterine growth restriction: study protocol of a nationwide stepped wedge cluster-randomized trial in The Netherlands (The IRIS Study), New charts for ultrasound dating of pregnancy and assessment of fetal growth: longitudinal data from a population-based cohort study. Ethical approval: The IRIS study was approved by the Dutch Institutional Review Board of the VU Medical University Centre Amsterdam (reference No 2013.409). These 5840 non-referred pregnant women had a mean number of 1.91 (SD 0.8) scans for the indication biometry. Fetal gestational age corresponded to 34 weeks. Routine versus indicated third trimester ultrasound: is a randomized trial feasible? Ultrasound is not as useful for imaging air-filled lungs, but it may be used to detect fluid around or within the lungs. In addition to their usual care, women in the intervention strategy received two biometry ultrasound scans in the third trimester, at 28-30 and 34-36 weeks’ gestation, to detect fetal growth restriction. Trial registration Netherlands Trial Register NTR4367. technical support for your product directly (links go to external sites): Thank you for your interest in spreading the word about The BMJ. 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