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.

scholarly journals Swedish intrauterine growth reference ranges of biometric measurements of fetal head, abdomen and femur

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Linda Lindström ◽  
Mårten Ageheim ◽  
Ove Axelsson ◽  
Laith Hussain-Alkhateeb ◽  
Alkistis Skalkidou ◽  
...  
Keyword(s):  
Fetal Growth ◽  
Random Effect ◽  
Abdominal Circumference ◽  
Reference Ranges ◽  
Fetal Head ◽  
Major Barrier ◽  
National Reference ◽  
Gestational Week ◽  
Biometric Measurements ◽  
Prospective Longitudinal

AbstractUltrasonic assessment of fetal growth is an important part of obstetric care to prevent adverse pregnancy outcome. However, lack of reliable reference ranges is a major barrier for accurate interpretation of the examinations. The aim of this study was to create updated Swedish national reference ranges for intrauterine size and growth of the fetal head, abdomen and femur from gestational week 12 to 42. This prospective longitudinal multicentre study included 583 healthy pregnant women with low risk of aberrant fetal growth. Each woman was examined up to five times with ultrasound from gestational week 12 + 3 to 41 + 6. The assessed intrauterine fetal biometric measurements were biparietal diameter (outer–inner), head circumference, mean abdominal diameter, abdominal circumference and femur length. A two-level hierarchical regression model was employed to account for the individual measurements of the fetus and the number of repeated visits for measurements while accounting for the random effect of the identified parameterization of gestational age. The expected median and variance, expressed in both standard deviations and percentiles, for each individual biometric measurement was calculated. The presented national reference ranges can be used for assessment of intrauterine size and growth of the fetal head, abdomen and femur in the second and third trimester of pregnancy.

DIAGNOSIS AND MANAGEMENT OF SELECTIVE FETAL GROWTH RESTRICTION IN MONOCHORIONIC TWINS

2009 ◽  
Vol 20 (4) ◽  
pp. 269-281 ◽  
Author(s):  
EDUARD GRATACÓS ◽  
ELISENDA EIXARCH ◽  
FATIMA CRISPI
Keyword(s):  
Fetal Growth ◽  
Common Sense ◽  
Fetal Growth Restriction ◽  
Growth Restriction ◽  
Fetal Weight ◽  
Abdominal Circumference ◽  
Monochorionic Twins ◽  
Normal Ranges ◽  
Estimated Fetal Weight ◽  
Simple Definition

Selective fetal growth restriction (sFGR) has been reported to occur in about 10–15% of monochorionic (MC) twins. The diagnosis of sFGR has been based on variable criteria including estimated fetal weight (EFW), abdominal circumference and/or the degree of fetal weight discordance. Recent studies tend to use a simple definition which includes the presence of an EFW less than the 10th percentile in the smaller twin. Some would argue that the intertwin fetal weight discordance should be included in the definition. Indeed this factor plays a major role in the complications presented by these cases. While the majority of cases with one fetus below the 10th percentile usually will also present with a large intertwin EFW discordance, the contrary is not always true. Thus, it is possible to find MC twins with remarkable intertwin EFW discordance but the EFW of both fetuses are still within normal ranges. Although it appears to be common sense that a large intertwin discrepancy might represent a higher risk for some of the complications described later in this review, there is no consistent evidence to support this notion. Therefore, due to its simplicity, a definition based on an EFW below 10th percentile in one twin is probably the most useful for clinical and research purposes.

Estimation of mouse fetal weight by ultrasonography: application from clinic to laboratory

2012 ◽  
Vol 46 (3) ◽  
pp. 225-230 ◽  
Author(s):  
Thang M Nguyen ◽  
Hitomi Nakamura ◽  
Atsuko Wakabayashi ◽  
Takeshi Kanagawa ◽  
Shinsuke Koyama ◽  
...  
Keyword(s):  
Fetal Growth ◽  
Fetal Weight ◽  
High Frequency Ultrasound ◽  
Biometric Parameters ◽  
Biparietal Diameter ◽  
Ultrasound System ◽  
Ultrasonographic Assessment ◽  
Growth Abnormalities ◽  
Estimate Fetal Weight ◽  
Frequency Ultrasound

Ultrasonographic assessment of fetal growth to estimate fetal weight has been widely used in clinical obstetrics but not in laboratory mice. Even though it is important to assess fetal growth abnormalities for gene-targeting studies using mice, there have been no reports of accurately estimated fetal weight using fetal biometric parameters in mice. The aim of this study was to establish an accurate mouse formula using fetal biometric parameters under ultrasound imaging. Using a high-frequency ultrasound system with a 40 MHz transducer, we measured 293 fetuses of biparietal diameter and mean abdominal diameter from day 12.5 postcoitus (p.c.) until day 18.5 p.c every day. Thirteen algorithms for humans based on head and/or abdominal measurements were assessed. We established an accurate formula based on measurement of the abdomen in Jcl:ICR mice to investigate gestational complications, such as intrauterine growth restriction.

scholarly journals HUBUNGAN KENAIKAN BERAT BADAN IBU DENGAN TAKSIRAN BERAT JANIN

2021 ◽  
Vol 6 (1) ◽  
pp. 17
Author(s):  
Yati Isnaini Safitri ◽  
Nur Masruroh
Keyword(s):  
Weight Gain ◽  
Pregnant Women ◽  
Fetal Growth ◽  
Sampling Technique ◽  
Fetal Weight ◽  
Maternal Weight ◽  
Chi Square ◽  
Purposive Sampling ◽  
Starting Point ◽  
Estimated Fetal Weight

Kecukupan gizi ibu hamil ditentukan oleh kenaikan berat badan ibu yang juga akan mendukung kenaikan berat badan janin serta kecepatan janin mensintesis jaringan. Pencatatan hasil berat badan pada setiap kunjungan ibu hamil bermanfaat untuk mengetahui kesejahteraan janin yang ada di dalam kandungan ibu. Pengukuran Tinggi Fundus Uteri (TFU) menjadi titik awal evaluasi pertumbuhan janin. Taksiran berat janin berguna untuk memantau pertumbuhan janin dalam rahim, sehingga diharapkan dapat mendeteksi dini kemungkinan terjadinya pertumbuhan janin yang abnormal. Tujuan penelitian Menganalisis hubungan antara kenaikan berat badan ibu hamil dengan taksiran berat janin di RBG Zakat Surabaya. Sampel berjumlah 25 ibu adalah ibu hamil trimester 3 yang datang berkunjung ke klinik RBG Zakat Surabaya selama bulan Mei-Agustus 2019. Tehnik pengambilan sample menggunakan teknik purposive sampling. Analisis data menggunakan chi-square. Hasil penelitian Berdasarkan hasil uji statistic dengan chi-square di dapatkan hasil perhitungan menunjukkan signifikansi (α) = 0,396. Dengan asumsi jika ρ <0,05 Ho Ditolak maka ada hubungan antara kenaikan berat badan ibu dengan taksiran berat badan janin.The nutritional adequacy of pregnant women is determined by the increase in maternal weight, which will also support the increase in fetal weight, and the rate at which the fetus synthesizes tissue. Recording weight results at every visit of pregnant women is useful to know the welfare of the fetus in the mother's womb. Uterine Fundus Height Measurement (TFU) is the starting point for evaluating fetal growth. Estimated fetal weight is useful for monitoring fetal growth in the uterus, so it is expected to detect early the possibility of abnormal fetal growth. Research Objectives To analyze the relationship between weight gain of pregnant women and fetal weight estimates in RBG Zakat Surabaya. The sample of 25 mothers was 3rd trimester pregnant women who came to visit the Zakat Surabaya RBG clinic during May-August 2019. The sampling technique used purposive sampling technique. Data analysis using chi-square. Results of the study Based on the results of the statistical test with chi-square obtained the calculation results showed significance (α) = 0.396. Assuming if ρ <0.05 Ho is rejected then there is a relationship between maternal weight gain and 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.

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