Fetal Kidney Length: Can be a New Parameter for Determination of Gestational Age in 3rd Trimester

Yusuf, Nahid; Moslem, Fauzia; Haque, Jasmine Ara

doi:10.3329/taj.v20i2.3078

Cited by 25 publications

(34 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The fetal renal length measurements in our study correlate closely with those of Cohen et al Their study found that unless the fetus is prone with its back facing the transducer, usually only the borders of the near kidney can be imaged adequately. Yusuf et al 16 in their study found that the mean fetal KL in millimeters approximates the gestational age in weeks in 3rd trimester.…”

Section: Discussionmentioning

confidence: 90%

“…14,15 By about 30 weeks of gestation, there is sufficient perinephric fat accentuating the renal outline to make its identification easy and accurate. 16 Studies have indicated that fetal growth variations predominantly affect the anteroposterior and transverse diameters of the fetal kidneys and KL remains unchanged in small-for-gestational age fetuses. 12,14,15 The fetal kidneys were studied on antenatal sonography in 397 patients by Cohen et al 15 who concluded that a strong statistical correlation exists between renal length and sonographic gestational age.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Sonographic Correlation of Gestational Age with Fetal Kidney Length

Hemraj¹,

Abraham²,

Vinayaka³

et al. 2016

International Journal of Infertility &Amp; Fetal Medicine

View full text Add to dashboard Cite

Background:Gestational age estimation is one of the most important information conveyed by a sonologist when performing an obstetric ultrasound examination. The traditional fetal biometric parameters, such as biparietal diameter (BPD), head circumference (HC), femur length (FL), and abdominal circumference become increasingly unreliable for accurate gestational age estimation with advancing pregnancy, especially in 3rd trimester. This study was conducted to assess the role of fetal kidney length (KL) as an alternate parameter to assess gestational age in 2nd and 3rd trimesters. Aim:To assess relationship between sonographic gestational age and fetal KL between 18 and 39 weeks of gestation. Settings and design:Prospective, cross-sectional, single operator study conducted over a period of 1 year in a medical college hospital. Materials and methods:Three hundred singleton pregnant women between 18 and 39 weeks of gestation were subjected to antenatal ultrasound. In addition to routine fetal biometry, measurements of fetal KL were made by noting distance between upper and lower poles of each kidney on a sagittal section of the fetal abdomen. The right and left KLs were averaged to obtain a single value for the purpose of statistical analysis. Statistical analysis:Statistical analysis is done using SAS 9.2, SPSS 15.0, Stata 10.1, Med Calc 9.0.1, Systat 12.0, and R environment version 2.11.1. Fetal KL was expressed as mean ± standard deviation. Linear regression analysis was used to establish a relationship between sonographic gestational age in weeks and fetal KL. Level of significance was expressed as p value.Results: A strong statistical correlation was found between sonographic gestational age and fetal KL. Nomograms and growth curves were constructed to correlate gestational age with fetal KL.ijifm Conclusion: Fetal KL measurements can be used as alternate method of estimating gestational age in women with uncertain last menstrual periods (LMPs) and presenting late in the gestation for safe confinement. In fetal macrocephaly, hydrocephalus, short-limb dysplasias, and when fetal head is engaged, these measurements are valuable alternate parameters to assess gestational age since they are simple, not time-consuming, easy to identify, and measure.

show abstract

Section: Discussionmentioning

confidence: 90%

Section: Discussionmentioning

confidence: 99%

Sonographic Correlation of Gestational Age with Fetal Kidney Length

Hemraj¹,

Abraham²,

Vinayaka³

et al. 2016

International Journal of Infertility &Amp; Fetal Medicine

View full text Add to dashboard Cite

show abstract

“…Initially fetal kidney length (FKL) is used for diagnosis of renal malformation in utero and later on it is used for correlation between it and the gestational age. It is strongly correlated to Gestational Age and its linear growth during gestation has been demonstrated on MRI also [15,16,1]. It is more accurate method of Gestational Age estimation than BPD, FL, HC and AC after 24th week of gestation [15,17].…”

Section: Original Research Articlementioning

confidence: 99%

“…The essential and primary responsibility of an obstetrician is to date the pregnancy as early as possible during the antenatal period. It is particularly important in high risk pregnancies for example severe preeclampsia, chronic hypertension, severe IUGR, central placenta previa, and sensitized Rh-negative mother where, in some cases early termination may become necessary as soon as fetus becomes mature [1]. Gestational Age estimation is also a prerequisite to interpret certain tests [2] (amniotic fluid assay, serum assay, chorionic villus sampling) and to plan timing of various forms of fetal therapy.…”

Section: Introductionmentioning

confidence: 99%

Fetal Kidney Length for Determining Gestational Age in Third Trimester

Gayam

Bai²,

Paul

2018

Obs Gyne Reivew J Obstet Gynecol

View full text Add to dashboard Cite

Introduction: Accurate gestational age assessment is important in obstetric care. Ultrasonography plays a significant role in determination of Gestational Age. The ultrasonographic parameters used for GA determination are Crown rump Length, Biparietal diameter, Head circumference, and abdominal circumference and Femur length. Fetal kidney length (FKL) is one of the emerging parameter in estimation of gestational age. Renal length in mm is identified to approximate the gestational age in weeks. The present study is aimed to corroborate that FKL as a good parameter for gestational age estimation in third trimester. Objective: Is to ascertain the precision of the ultrasonographic 'foetal kidney length' measurement as a reliable parameter for determination of GA in third trimester. Material and Methods: One year Cross-Sectional and an Observational Study was conducted on 171 antenatal women in the third trimester after corroborating the gestational age by first trimester ultra sound and GA by LMP. Ultrasound measurements of Foetal kidney length were taken and correlation with last menstrual period gestational age and with other parameters (BPD, HC, AC, FL) were evaluated. Results: This study showed a good correlation of Mean kidney length with GA by LMP of (r=0.991) than the rest of the parameters, HC(r=0.836), FL(r=0.853), AC(r=0.853), BPD (r=0.734) with p value=0.000 for all the parameters. Conclusion: This study confirms that the fetal kidney length measurement is a reliable ultrasonographic parameter for estimating the gestational age accurately in the 3rd trimester and also it is observed that the correlation is increased when used along with other parameters.

show abstract

“…6 Previous studies have demonstrated that fetal kidney length (FKL) is a more accurate method of GA estimation than BPD,HC, AC and FL after 24 weeks of gestation. [7][8][9][10] This study intends to determine the accuracy of fetal gestational age estimation using mean fetal kidney length and comparing its efficacy with other biometric parameters and gestational age derived from last menstrual period as taken as a standard. The investigational tool will accurately predict the estimated date the confinement without being affected by the discrepancy of late trimester or by growth retardation of the foetus.…”

mentioning

confidence: 99%

Foetal Kidney Length Comparing Its Efficacy with Other Biometric Parameters as a Parameter for Determination of Gestational Age in Pregnancy by Ultrasonography

Saxena¹

2016

jmscr

View full text Add to dashboard Cite

Fetal Kidney Length: Can be a New Parameter for Determination of Gestational Age in 3rd Trimester

Cited by 25 publications

References 5 publications

Sonographic Correlation of Gestational Age with Fetal Kidney Length

Sonographic Correlation of Gestational Age with Fetal Kidney Length

Fetal Kidney Length for Determining Gestational Age in Third Trimester

Foetal Kidney Length Comparing Its Efficacy with Other Biometric Parameters as a Parameter for Determination of Gestational Age in Pregnancy by Ultrasonography

Contact Info

Product

Resources

About