Relationship Between Amniotic Fluid Index and Ultrasound Estimated Fetal Weight in Healthy Pregnant African Women

Adeyekun, AA; Awosanya, Gbolahan G

doi:10.4103/2156-7514.106614

Cited by 10 publications

(10 citation statements)

References 7 publications

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“…Ademola et al. ( 24 ) found an overall correlation coefficient between AFI and the EFWT to be 0.241 ( P > 0.05). He neither categorized the data into male and female nor grouped the data into gestational age groups.…”

Section: Discussionmentioning

confidence: 96%

Relationship of amniotic fluid index (AFI) in third trimester with fetal weight and gender in a southeast Nigerian population

Agwu¹,

Ugwu

Shem

et al. 2016

Acta Radiologica Open

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BackgroundAmniotic fluid (AF) is one of the major determinants of fetal biophysical profile and can predict pregnancy outcome. Abnormal value of amniotic fluid index (AFI) may indicate fetal and maternal disorders.PurposeTo establish reference standards for AFI for this population after 28 weeks of pregnancy and evaluate the relationship between AFI, the estimated fetal weight (EFWT), and fetal gender.Material and MethodsA prospective cross-sectional estimation of AFI and FWT was done in 385 apparently healthy pregnant women in the gestational age range of 28–42 weeks. General scanning in longitudinal, transverse, and oblique directions of the abdomen was done to assess the fetal wellbeing and determine the fetal gender for each participant. AF was measured in each of the quadrants of the abdomen. The four values of the AF were summed to get the AFI. Measurement of the head circumference, biparietal diameter, abdominal circumference, and femoral length of the fetus were obtained. The EFWT was calculated using Hadlock’s formula. The data were divided into five groups: 28–30 weeks 6 days; 31–33 weeks 6 days; 34–36 weeks 6 days; 37–39 weeks 6 days; and 40–42 weeks. AFI for the different gestational age group studied and their percentiles were obtained.ResultsAFI normogram for the local population was established. Positive and significant correlations of AF and EFWT were seen in all the gestational age groups of the women. No significant correlations between AF and EFWT was seen in male fetuses. Regression equations of EFWT and AFI were obtained for female fetuses.ConclusionThe normal range for AFI values for the third trimester was established and could be used to evaluate AFI in the studied population. Established fetal weight should be taken into account when interpreting AFI for female fetuses but this need not be applied for male fetuses.

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Section: Discussionmentioning

confidence: 96%

Relationship of amniotic fluid index (AFI) in third trimester with fetal weight and gender in a southeast Nigerian population

Agwu¹,

Ugwu

Shem

et al. 2016

Acta Radiologica Open

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“…Previous reports have investigated possible associations between the sonographically attained fluid index and the EFW,[ 10 11 ] including the influence of AFI on the accuracy of sonographically EFW, among Caucasians. However, such studies are rare among Indians, especially those in Central India.…”

Section: Introductionmentioning

confidence: 99%

Association between fetal weight and amniotic fluid index in women of Central India

Wadnere¹,

Kosta²,

Kumar³

2014

Adv Biomed Res

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Background:The placenta is important for fetal growth and well-being. Defective placentation and impaired placental circulation may result in anomalies in fetal growth. Placental volume in the second trimester appears to be closely related to the neonatal weight. The association of body weight with urine output has been observed in human neonates. Our goal is to assess the association of the amniotic fluid index (AFI) with the estimated fetal weight (EFW).Materials and Methods:Thirteen hundred and ninety-three pregnant women were prospectively studied by means of an ultrasound over a 12–month period. The fetal weight (FW) was estimated using a combination of fetal parameters – bi-parietal diameter, fetal trunk cross-sectional area, and femur length. AFI was assessed using the four quadrant method. The level of statistical significance was set at P ≤ 0.05.Results:There was no statistically significant association between AFI and EFW (P > 0.05; r = 0.413). We also did not find a significant association between AFI and EFW for all subdivisions of gestation age, except in the 24 – 28 weeks and 29 – 32 weeks’ groups.Conclusion:The FW calculations and amniotic index show a variation in values in late pregnancy. There does not appear to be a linear association between the ultrasound estimate of FW and the amniotic index. The implication of this is that the fetal size need not be taken into cognizance when alterations in amniotic fluid values are noted.

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“…Previous studies by Adeyekun et al . 9 , in 2013 with 253 patients, or by Owen et al . 11 in 2002 with 274 patients, found no correlation between EFW and AFI, either in the overall population or in the gestational age-separated subgroups, which is discordant to our results.…”

Section: Discussionmentioning

confidence: 99%

“…Such an association could indicate that the amniotic fluid assessment should consider the fetal parameters to make it more precise. A review of the existing literature showed conflicting results on the possible correlation between the amount of amniotic fluid and fetal weight estimation 9 – 12 . However, these studies were all unicentric, based only on a small number of patients (from 90 to 400 patients), mainly retrospective and did not analyze the influence of other factors.…”

Section: Introductionmentioning

confidence: 99%

Association between amniotic fluid evaluation and fetal biometry: a prospective French “Flash” study

Fuchs

Aouinti

Souaied

et al. 2018

Sci Rep

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We aimed to study the association between three different methods of assessing the amount of amniotic fluid (subjective method (SM), deepest vertical pocket (DVP) and amniotic fluid index (AFI)) and estimated fetal weight (EFW) (in percentile or Z-score) after adjustment on maternal-fetal parameters. We performed a nationwide cross-sectional study through the French network of obstetric sonographers using the “flash” study method and including low-risk singleton pregnancies from 18–40 weeks. Crude and adjusted odds ratio were computed after stratification upon 2nd and 3rd trimester of pregnancy. 1667 ultrasound scans performed by 65 operators were included. Only Z-score of EFW was significantly associated with SM in both trimesters. For DVP and AFI, Z-score of EFW and male fetal gender was significantly associated with them in 2nd trimester. In the 3rd trimester, both Z-score of EFW and large (LGA) or small for gestational age (SGA) fetus were significantly associated with AFI. and DVP. Overweight woman and class I obesity women were also significantly associated with DVP modification. In conclusion, all three methods of amniotic fluid evaluation are significantly associated to estimated fetal weight. DVP and AFI appeared equivalent except that maternal-fetal factors seemed to have a higher impact in DVP than AFI.

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Relationship Between Amniotic Fluid Index and Ultrasound Estimated Fetal Weight in Healthy Pregnant African Women

Cited by 10 publications

References 7 publications

Relationship of amniotic fluid index (AFI) in third trimester with fetal weight and gender in a southeast Nigerian population

Relationship of amniotic fluid index (AFI) in third trimester with fetal weight and gender in a southeast Nigerian population

Association between fetal weight and amniotic fluid index in women of Central India

Association between amniotic fluid evaluation and fetal biometry: a prospective French “Flash” study

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