Validation study of the capacity of the reference curves of ultrasonographic measurements of the umbilical cord to identify deviations in estimated fetal weight

2008 ◽  
Vol 87 (3) ◽  
pp. 286-291 ◽  
Author(s):  
Cristiane Barbieri ◽  
Jose Guilherme Cecatti ◽  
Fabiana Krupa ◽  
Emilio Francisco Marussi ◽  
Jose Vilton Costa
Keyword(s):  
Umbilical Cord ◽  
Validation Study ◽  
Fetal Weight ◽  
Reference Curves ◽  
Estimated Fetal Weight

scholarly journals Relationship between Sonographic Umbilical cord Diameter and Gestational Age in Third Trimester of Pregnancy

2021 ◽  
pp. 20-27
Author(s):  
Sara Essam ALdabouly ◽  
Mohamed Mohsen El Namori ◽  
Mona Khaled Omar ◽  
Essmat Hamdy AboZeid
Keyword(s):  
Pregnant Women ◽  
Umbilical Cord ◽  
Fetal Growth ◽  
Gestational Age ◽  
Umbilical Vein ◽  
Well Being ◽  
Fetal Weight ◽  
University Hospital ◽  
Third Trimester ◽  
Estimated Fetal Weight

Background: Throughout the fourth week of embryonic development the umbilical cord (UC) is formed, which corresponds to the fifth to the twelfth weeks of gestation. Fetuses with intrauterine growth restriction (IUGR) have leaner UCs than fetuses of appropriate gestational age do, and the caliber of the umbilical vein decreases significantly, resulting in a worsening of the Doppler parameters of the umbilical artery in the mother. The goal of this study was to evaluate the significance of sonographic UC diameter in determining gestational age in third trimester in pregnant women. Methods: We conducted a comparative cross-sectional research on 300 pregnant women aged range between (20-35) years, singleton gestation, gestational age (3rd) trimester estimated from antenatal mothers last menstrual period (LMP), viable fetus, presenting to obstetrics and gynecology department at Tanta university hospital. Results: Highly statistically significant positive correlation between UC diameter and gestational age, BPD, FL, AC, AFI, and estimated fetal weight was found. The increase in UC diameter was positively and significantly correlated with the increase in gestational age and estimated fetal weight, indicating that those who have prolonged gestational age and estimated fetal weight are more likely to have wider UC diameter. Conclusions: The UC diameter (UCD) has the potential to be a valuable indicator of fetal growth, well-being, and perinatal outcome. Sonographic measurement of UC diameter could be an efficient method of measuring fetal growth and predicting gestational age (GA), particularly between 28-40 weeks GA. It is possible that abnormal UC diameter can be a strong indicator to identify antenatal mothers at risk for IUFD and poor fetal outcomes.

scholarly journals Local References for Ultrasound-Estimated Fetal Weight Based on 2,211 Singleton Pregnancies in the City of Curitiba, South of Brazil

2020 ◽  
Vol 42 (04) ◽  
pp. 174-180
Author(s):  
Daniel Massamatsu Pianovski Kato ◽  
Liziane Lorusso ◽  
Natália Roberta Andrade Dalla Costa ◽  
Camila Rotter Queiroz Ulyssea ◽  
Gabrielle Navarro Lizana ◽  
...  
Keyword(s):  
Local Population ◽  
Fetal Weight ◽  
Coefficient Of Determination ◽  
Growth Disorders ◽  
Reference Curve ◽  
Proposed Model ◽  
Reference Curves ◽  
South Of Brazil ◽  
Estimated Fetal Weight ◽  
Singleton Pregnancies

Abstract Objective To develop reference curves of estimated fetal weight for a local population in Curitiba, South of Brazil, and compare them with the curves established for other populations. Methods An observational, cross-sectional, retrospective study was conducted. A reference model for estimated fetal weight was developed using a local sample of 2,211 singleton pregnancies with low risk of growth disorders and well-defined gestational age. This model was compared graphically with the Hadlock and Intergrowth 21st curves. Results Reference curves for estimated fetal weight were developed for a local population. The coefficient of determination was R2 = 99.11%, indicating that 99.11% of the fetal weight variations were explained by the model. Compared with Hadlock curves, the 50th, 90th, and 97th percentiles in this model were lower, whereas the 10th percentile nearly overlapped, and the 3rd percentile was slightly higher in the proposed model. The percentiles were higher in the proposed model compared with the Intergrowth 21st curves, particularly for the 3rd, 10th, and 50th percentiles. Conclusion We provide a local reference curve for estimated fetal weight. The proposed model was different from other models, and these differences might be due to the use of different populations for model construction.

scholarly journals Area of Wharton's jelly as an estimate of the thickness of the umbilical cord and its relationship with estimated fetal weight

2011 ◽  
Vol 8 (1) ◽  
Author(s):  
Cristiane Barbieri ◽  
Jose G Cecatti ◽  
Fernanda G Surita ◽  
Maria L Costa ◽  
Emilio F Marussi ◽  
...  
Keyword(s):  
Umbilical Cord ◽  
Wharton’S Jelly ◽  
Fetal Weight ◽  
Wharton's Jelly ◽  
Estimated Fetal Weight

scholarly journals Accuracy of ultrasound estimated fetal weight formulae to predict actual birthweight after 34 weeks: prospective validation study

2013 ◽  
Vol 58 (3) ◽  
pp. 116 ◽  
Author(s):  
S Kumarasiri ◽  
R Wanigasekara ◽  
L Wahalawatta ◽  
L Jayasinghe ◽  
T Padeniya ◽  
...  
Keyword(s):  
Validation Study ◽  
Fetal Weight ◽  
Estimated Fetal Weight

Discrepancy Analysis between Clinical Versus Ultrasound Estimated Fetal Weight and Actual Birth Weight at 3rd Trimester

2019 ◽  
Vol 11 (1) ◽  
pp. 32-38
Author(s):  
Naznin Rashid Shewly ◽  
Menoka Ferdous ◽  
Hasina Begum ◽  
Shahadat Hossain Khan ◽  
Sheema Rani Debee ◽  
...  
Keyword(s):  
Birth Weight ◽  
Low Birth Weight ◽  
Fetal Weight ◽  
P Value ◽  
Weight Estimation ◽  
Third Trimester ◽  
Mortality And Morbidity ◽  
Fetal Weight Estimation ◽  
Obstetric Management ◽  
Estimated Fetal Weight

Background: In obstetric management fetal weight estimation is an important consideration when planning the mode of delivery in our day to day practice. In Bangladesh low birth weight is a major public health problem & incidence is 38% - 58%. Neonatal mortality and morbidity also yet high. So accurate antenatal estimation of fetal weight is a good way to detect macrosomia or small for date baby. Thus to improve the pregnancy outcome and neonatal outcome decreasing various chance of neonatal mortality and morbidity antenatal fetal weight prediction is an invaluable parameter in some situation where to identify the at risk pregnancy for low birth weight become necessary. Reliable method for prenatal estimation of fetal weight two modalities have got popularity - Clinical estimation and another one is ultrasonic estimation. This study was designed to determine the accuracy of clinical versus ultrasound estimated fetal weight detecting the discrepancy with actual birth weight at third trimester. So that we can verify more reliable and accurate method. Objectives: To find out more accurate and reliable modality of fetal weight estimation in antenatal period during obstetric management planning. To compare clinical versus ultrasound estimated fetal weight & to determine discrepancy of both variable with actual birth weight. Method: This prospective, cross sectional analytical study was carried out in Dhaka Medical College Hospital from January 2006 to December 2006. By purposive sampling 100 pregnant women fulfilling inclusion criteria were included in my study in third trimester (29wks-40wks). In clinical weight estimation procedure SFH (Symphysio Fundal Height) was measured in centimeter. On pervaginal finding whether vertex below or above the ischial spine was determined. By Johnson’s formula fetal weight in grams was estimated. Then by ultrasound scan different biometric measurements were taken and finally by Hadlock’s formula fetal weight was estimated. Eventually actual birth weight was taken after birth by Globe Brand weighing machine. Accuracy of both modalities were compared and which one was more reliable predictor was determined by statistical analysis. Results: After data collection were analyzed by computer based software (SPSS). There was gradual and positive relationship between symphysiofundal height and estimated birth weight. Discrepancy between clinical and actual birth weight at third trimester was statistically significant – Paired Student’s ‘t’ test was done where p value was <0.001. Whereas discrepancy between sonographically estimated fetal weight with actual birth weight was not statistically significant (by paired ‘t’ test where p value was >0.05). That implies discrepancy between ultrasound estimated fetal weight and actual birth weight was significantly less than that of clinically estimated fetal weight. 14% clinically and 46% sonographically estimated fetal weight were observed within £ 5% of actual birth weight. 31% clinical and 42% sonographically estimates observed within 6% to 10% of actual birth weight and 55% clinical and 12% sonographically estimate were >10% of actual birth weight. That is about 88% sonographical versus 45% clinical estimates were within 10% of actual birth weight. Conclusion: There is no doubt about importance of fetal weight in many obstetric situations. Clinical decisions at times depends on fetal weight. Whether to use oxytocin, to use forceps or vacuum for delivery or extend of trial or ended by Caesarian section immediately or no scope of trial to be largely depend on fetal size and weight. So more accurate modality for antenatal fetal weight estimation has paramount importance. In my study sonographically estimated weight have more accuracy than that of clinical estimate in predicting actual birth weight. Sonographically estimated fetal weight is more reliable, accurate and reproducible rather than other modality. J Shaheed Suhrawardy Med Coll, June 2019, Vol.11(1); 32-38

scholarly journals Swedish intrauterine growth reference ranges for estimated fetal weight

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Linda Lindström ◽  
Mårten Ageheim ◽  
Ove Axelsson ◽  
Laith Hussain-Alkhateeb ◽  
Alkistis Skalkidou ◽  
...  
Keyword(s):  
Fetal Growth ◽  
Postnatal Growth ◽  
Fetal Weight ◽  
Hierarchical Regression ◽  
Reference Ranges ◽  
Hierarchical Regression Model ◽  
Gestational Week ◽  
Prospective Longitudinal ◽  
Estimate Fetal Weight ◽  
Estimated Fetal Weight

AbstractFetal growth restriction is a strong risk factor for perinatal morbidity and mortality. Reliable standards are indispensable, both to assess fetal growth and to evaluate birthweight and early postnatal growth in infants born preterm. The aim of this study was to create updated Swedish reference ranges for estimated fetal weight (EFW) from gestational week 12–42. This prospective longitudinal multicentre study included 583 women without known conditions causing aberrant fetal growth. Each woman was assigned a randomly selected protocol of five ultrasound scans from gestational week 12 + 3 to 41 + 6. Hadlock’s 3rd formula was used to estimate fetal weight. A two-level hierarchical regression model was employed to calculate the expected median and variance, expressed in standard deviations and percentiles, for EFW. EFW was higher for males than females. The reference ranges were compared with the presently used Swedish, and international reference ranges. Our reference ranges had higher EFW than the presently used Swedish reference ranges from gestational week 33, and higher median, 2.5th and 97.5th percentiles from gestational week 24 compared with INTERGROWTH-21st. The new reference ranges can be used both for assessment of intrauterine fetal weight and growth, and early postnatal growth in children born preterm.

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