Does maternal height affect clinical estimation of fetal weight accuracy?

Maternal height along with fetal weight has a great influence on the mode of delivery. This study is aimed to find the obstetric outcome in short stature pregnant females. So 250 pregnant primi patients were randomly selected. After considering the inclusion and exclusion criteria, 250 cases were divided in two groups. One group of 144 cases who underwent emergency LSCS was the study group, and rest 106 who gave birth vaginally was the control group. Results of the two groups compared in relation to obstetric outcome and fetal weight.

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Sonographic Risk Assessment for An Unplanned Operative Delivery: A Prospective Study

10.21203/rs.3.rs-522672/v1 ◽

2021 ◽

Author(s):

Sharon Perlman ◽

Hanoch Schreiber ◽

Zvi Kivilevitch ◽

Ron Bardin ◽

Eran Kassif ◽

...

Keyword(s):

Prospective Study ◽

Vaginal Delivery ◽

Fetal Weight ◽

Maximum Likelihood Estimates ◽

Operative Delivery ◽

Maternal Height ◽

Spontaneous Vaginal Delivery ◽

Pubic Arch ◽

Estimated Fetal Weight ◽

Angle Of Progression

Abstract Purpose: To assess the value of pre-labor maternal and fetal sonographic variables to predict an unplanned operative delivery.Methods: In this prospective study, nulliparous women were recruited at 37.0-42.0 weeks of gestation. Sonographic measurements included estimated fetal weight, maternal pubic arch angle, and the angle of progression. We performed a descriptive and comparative analysis between two outcome groups: spontaneous vaginal delivery (SVD) and unplanned operative delivery (UOD) (vacuum-assisted, forceps-assisted and cesarean deliveries). Multivariate logistic regression with ROC analysis was used to create discriminatory models for UOD. Results: Among 234 patients in the study group, 175 had a spontaneous vaginal delivery and 59 an unplanned operative delivery. Maternal height and pubic arch angle (PAA) significantly correlated with UOD. Analysis of Maximum Likelihood Estimates revealed a multivariate model for the prediction of UOD, including the parameters of maternal age, maternal height, sonographic PAA, angle of progression (AOP), and estimated fetal weight, with an area under the curve of 0.7118. Conclusion: Sonographic parameters representing maternal pelvic configuration (PAA) and maternal-fetal interface (AOP) improve the prediction ability of pre-labor models for a UOD. These data may aid the obstetrician in the counseling process before delivery.

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Fetal growth prediction: Establishing fetal growth prediction curves in the second trimester

Technology and Health Care ◽

10.3233/thc-218032 ◽

2021 ◽

Vol 29 ◽

pp. 345-350

Author(s):

Yan Wang ◽

Xinyu Bao ◽

Song Zhang ◽

Lin Yang ◽

Guoli Liu ◽

...

Keyword(s):

Birth Weight ◽

Fetal Growth ◽

Growth Curve ◽

Stepwise Regression ◽

Fetal Weight ◽

Maternal Height ◽

Second Trimester ◽

Growth Prediction ◽

Curve Model ◽

Input Model

BACKGROUND: Monitoring fetal weight during pregnancy has a guiding role in prenatal care. OBJECTIVE: To establish a personalized fetal growth curve for effectively monitoring fetal growth during pregnancy. METHODS: (1) This study retrospectively analyzed the birth weight database of 2,474 singleton newborns delivered normally at term. The personalized fetal growth curve model was formed by combining the estimating birth weight of newborns with the proportional weight formula. (2) Multiple linear stepwise regression method was used to estimate the birth weight of newborns. RESULTS: (1) Delivery gestational age, weight at first visit, maternal height, pre-pregnancy body mass index, fetal sex, parity had significant effects on birth weight. Based on these parameters, the formula for calculating term optimal weight was obtained (R2= 22.8%, P< 0.001). (2) The personalized fetal growth curve was obtained according to the epidemiological factors input model of each pregnant woman. CONCLUSIONS: A model of personalized fetal growth curve can be established, and be used to evaluate fetal growth and development through estimated fetal weight monitoring.

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Preterm birth unrelated to maternal height in Asian women with singleton gestations

Journal of the Society for Gynecologic Investigation ◽

10.1016/s1071-5576(01)00127-7 ◽

2001 ◽

Vol 8 (5) ◽

pp. 291-294 ◽

Cited By ~ 2

Author(s):

T Lao

Keyword(s):

Preterm Birth ◽

Asian Women ◽

Maternal Height

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Macrosomia – a new formula for optimized fetal weight estimation

Geburtshilfe und Frauenheilkunde ◽

10.1055/s-0028-1089271 ◽

2008 ◽

Vol 68 (S 01) ◽

Author(s):

NC Hart ◽

J Siemer ◽

B Meurer ◽

TW Goecke ◽

RL Schild

Keyword(s):

Fetal Weight ◽

Weight Estimation ◽

Fetal Weight Estimation ◽

New Formula

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Does the formula suggested by Intergrowth-21st project yield the best accuracy in fetal weight estimation?

10.1055/s-0037-1607875 ◽

2017 ◽

Author(s):

D Balsyte ◽

T Burkhardt ◽

R Zimmermann ◽

J Kurmanavicius

Keyword(s):

Fetal Weight ◽

Weight Estimation ◽

Fetal Weight Estimation

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

Journal of Shaheed Suhrawardy Medical College ◽

10.3329/jssmc.v11i1.43176 ◽

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

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