A longitudinal study of amniotic fluid index in normal pregnancy in Nigerian women

Chama, Calvin; Bobzom, D. N.; Mai, Marion

doi:10.1016/s0020-7292(00)00338-6

Cited by 11 publications

(19 citation statements)

References 8 publications

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“…However, since the amniotic fluid volume is determined by factors that affect production and resorption, fetal swallowing, transmembranous and intramembranous absorption, which are the main routes of removal of amniotic fluid, these definitely have significant roles in ultimately determining the amniotic fluid index. Fetal swallowing accounts for about half of the total amount of fluid removed [13,14,18,19]. After 40 weeks the fetal urine production wanes as a result of decreasing fetal growth and decreasing placental function hence the gradual drop in AFI noted in this study after 40 weeks gestation [1,13,14,18,19].…”

Section: Discussionmentioning

confidence: 74%

“…Oligohydramnios has been defined as an amniotic fluid volume that is abnormally low for gestational age or a volume of less than 500 ml at term, while polyhydramnios is amniotic fluid volume greater than normal for gestational age or 2000 ml or more at term [5,12]. Oligohydramnios is associated with small for gestational age fetus, renal anomalies and urinary tract dysplasias [5] while polyhydramnios may be associated with fetal neural tube defects, central nervous system abnormalities affecting fetal swallowing, gastrointestinal obstructions, infections, isoimmunisation, gestational diabetes mellitus, non-immune fetal hydrops, chorioangioma of the placenta, and pulmonary hypoplasia [6,13,14].…”

Section: Introductionmentioning

confidence: 99%

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Sonographic evaluation of the Amniotic Fluid Index in normal singleton pregnancies in a Nigerian population.

Igbinidu¹,

Akhigbe²,

Akinola³

2013

IOSR-JDMS

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Estimation of amniotic fluid volume is an integral part of the routine obstetric ultrasound scan and the amniotic fluid index (AFI) is one of the methods for doing this. Reduction or excessive production of amniotic fluid during pregnancy is also a strong predictor of possible associated congenital fetal anomaly. This study was to assess the AFI in Nigerian women and correlate same with their gestational age. It is a prospective cross sectional study of 300 scanned singleton pregnancies between 15-42 gestational ages. Their amniotic fluid indices were determined and correlated with their gestational age. A statistical analysis of data was done using the SPSS version 16, Chicago, Illinois. The study population mean AFI was 12.91±4.82cm, ranging from 4.17-22.05cm and a median of 12.56; the 5 th and 95 th percentile being 5.81 and 21.95 respectively. The mean AFI for preterm and term gestations were 12.70±5.02cm and 14.07±3.34cm respectively. There was no statistically significant difference between the mean AFI of the total study population and that of preterm and term gestations. The peak mean AFI value occurred at 28 weeks gestational age, with no bias in the distribution of amniotic fluid in the four quadrants of the uterus. Apart from establishing the normal AFI values in this environment, this study also showed that there was a weak positive correlation between gestational age and AFI, with no statistically significant difference in AFI of preterm and term gestations.

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Section: Discussionmentioning

confidence: 74%

Section: Introductionmentioning

confidence: 99%

Sonographic evaluation of the Amniotic Fluid Index in normal singleton pregnancies in a Nigerian population.

Igbinidu¹,

Akhigbe²,

Akinola³

2013

IOSR-JDMS

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“…In this study, the gestation specific percentage values of amniotic fluid index have been formulated for the uncomplicated pregnant Abuja women. While various studies [29,34] recorded their peak AFI values at 26 th week of gestation, the peak mean AFI value in the present study was recorded at the 28 th week of gestation. Igbinidu and colleagues reported similar findings [2].…”

Section: Discussionmentioning

confidence: 46%

“…Sample size, N=Z 2 δ 2 / ɛ 2 N=Sample size Z=is the abscissa of the normal curve that cuts off an area α at the tails (1.96) δ=population standard deviation or variance (3.89 for 20 weeks while 3.06 for 22 weeks) [29] ɛ=error range obtained from pilot study (11%) For mothers at 20 weeks:…”

Section: Methodsmentioning

confidence: 99%

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Comparison of Amniotic Fluid Index at Different Gestational Age in Normal Pregnancy

Adebayo¹,

Onafowokan²,

Babalola³

et al. 2017

J Women's Health Care

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Sonographic assessment of amniotic fluid has formed an integral and important component of pregnancy assessment of fetal wellbeing. Changes in amniotic fluid volume are associated with variable outcome of the fetus. Amniotic fluid index which is an objective means of assessing adequacy of amniotic fluid volume does not only vary with gestational age but also differs from population to population. The study determined the reference values of amniotic fluid index and compared the values with the established ranges throughout gestation in uncomplicated singleton pregnancies among women attending our antenatal care facility. This was a longitudinal prospective assessment of amniotic fluid index in eighty six healthy pregnant women with singleton pregnancies recruited at 20 to 22 weeks of gestation and followed up to 41 weeks and 3 days. The patients recruited at 20 weeks had amniotic fluid measurements at recruitment and 4 weeks apart until 40 weeks gestation. Those recruited at 22 weeks had it also at recruitment and 4 weekly with the last estimation at 41 weeks +3 days. These measurements were plotted against their respective gestational ages. The graph was then analyzed using statistical and graphical packages of SPSS version 21. The study populations mean, 5 th and 95 th percentiles was documented and discussed appropriately. A total of 414 readings were obtained from 81 subjects who underwent more than 3 measurements. Analysis of the data obtained shows a rising AFI with a mean 28 weeks and, thereafter gradually fell till term. The mean age obtained in the study group compared with that of Caucasians showed statistically significant difference (P=0.014). Also, comparison with Chama et al. showed obvious statistical difference at the lower limit (5 th percentile; P=0.007, 50 th percentile; P=0.006) but no differences at the upper limit (95 th percentile; P=0.726). Amniotic fluid index values appear to be differing in different population. The reference range of AFI used in clinical practice should therefore be based on data obtained from local population.

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Current Awareness

2001

Prenatal Diagnosis

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In order to keep subscribers up‐to‐date with the latest developments in their field, John Wiley & Sons are providing a current awareness service in each issue of the journal. The bibliography contains newly published material in the field of prenatal diagnosis. Each bibliography is divided into 17 sections: 1 Books, Reviews & Symposia; 2 General Interest; 3 Normal Fetal Development; 4 Gametogenesis and Pre‐implantation Diagnosis; 5 First Trimester Diagnosis; 6 Second Trimester Diagnosis; 7 Fetal Diagnosis by Ultrasound and Other Imaging; 8 Maternal Screening; 9 Screening for Carriers of Genetic Abnormality; 10 Technological Developments; 11 Confined Placental Mosaicism and Uniparental Disomy; 12 Molecular Cytogenetics; 13 Fetal Cells in Maternal Circulation; 14 Fetal Therapy; 15 Psychosocial Aspects; 16 Epidemiology and Environmental Factors; 17 Developmental Pathology. Within each section, articles are listed in alphabetical order with respect to author. If, in the preceding period, no publications are located relevant to any one of these headings, that section will be omitted

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A longitudinal study of amniotic fluid index in normal pregnancy in Nigerian women

Abstract: Gestational age specific values of amniotic fluid index should be used and the 5th and 95th percentiles taken as lower and upper limits of normal, respectively.

Cited by 11 publications

References 8 publications

Sonographic evaluation of the Amniotic Fluid Index in normal singleton pregnancies in a Nigerian population.

Sonographic evaluation of the Amniotic Fluid Index in normal singleton pregnancies in a Nigerian population.

Comparison of Amniotic Fluid Index at Different Gestational Age in Normal Pregnancy

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