Predicting Fetal Growth Restriction With Renal Volume Using 3-D Ultrasound: Efficacy Evaluation

Chang, Cheng-Yen; Tsai, Perng Jy; Chen, Yu; Ko, Huei Chen; Chang, Feng-Cheng

doi:10.1016/j.ultrasmedbio.2007.10.006

Cited by 17 publications

(15 citation statements)

References 26 publications

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“…Volume measurements may predict single renal glomerular filtration rate better than renal length measurements [17]. Fetal renal growth was found predictive for intrauterine growth retardation and the 10th percentile of renal volume was found to be the best cutoff value [18]. For practical reasons, with respect to the inherent difficulties to investigate young children, we recommend to regard a range from 10 to 90% of the normally distributed BSARV as a normal range for all children and adolescents.…”

Section: Discussionmentioning

confidence: 99%

Body-Surface-Area Related Renal Volume: A Common Normal Range from Birth to Adulthood

Scholbach

Weitzel

2012

Scientifica

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Renal volume is an important parameter of renal development. Deviations from normal volume may indicate pathologic conditions. Thus, during childhood, the ever changing renal volumes require the continuous referral to normal volume charts in order to classify actual volumes, which is rather inconvenient. In daily practice this is frequently disregarded and kidneys are evaluated by their appearance only. Therefore, we tested the hypothesis that body surface area (BSA) and renal volume grow proportionally from birth to adulthood. We divided the renal volume of a child by its BSA to get the BSA-related renal volume (BSARV) and found no differences between left and right kidneys and a normal distribution for all kidneys regardless of the patient's age. BSARV has a common normal range for all age groups with the 10th percentile of 45 and the 90th percentile of 85 mL/m2. 80% of all kidneys do not exceed the volume of their counterparts by more than 20%. BSARV alleviates the correct evaluation of a child's renal volume regardless of age and reveals pathological influences by the simple observation that a kidney deviates from a former percentile or z-value. This is especially valuable in the followup of kidneys with chronic diseases.

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Section: Discussionmentioning

confidence: 99%

Body-Surface-Area Related Renal Volume: A Common Normal Range from Birth to Adulthood

Scholbach

Weitzel

2012

Scientifica

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“…Three-dimensional US offers a more accurate volumetric estimation of fetal organs than 2D-US [14,15] , thus allowing a better assessment of growth. In a recent study, Chang et al [8] reported that RV estimated by the multiplanar method was a good predictor of intrauterine growth restriction (using the 10th percentile as a cut-off), with a sensitivity of 96.4%, a specificity of 95.9%, a positive predictive value of 75.0% and a negative predictive value of 99.5%.…”

Section: Discussionmentioning

confidence: 99%

“…While there are three previous publications on fetal renal volume [5,7,8] , only one of them presented reference values throughout pregnancy [5] . In all three studies, the renal volume was calculated using the multiplanar method which traces multiple adjacent sequential planes of the organ.…”

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confidence: 99%

Reference Range of Fetal Renal Volume by Three-Dimensional Ultrasonography Using the Vocal Method

et al. 2009

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Objective: To establish reference values for fetal renal volume by three-dimensional sonography using the VOCAL (Virtual Organ Computer-Aided Analysis) method. Methods: This prospective longitudinal study involved 57 healthy pregnant women who were examined between 24 and 34 weeks of pregnancy. Each fetal kidney was evaluated separately using the VOCAL method with a 30° rotation angle. For each gestational age, the following measures were obtained for the right and left kidneys: mean, standard deviation, minimum and maximum values, and the 5th, 10th, 25th, 50th, 75th and 90th percentiles. Polynomial regression models were constructed to assess the relationship between renal volume and gestational age, adjusted by the determination coefficient (R²). The Wilcoxon test was used to evaluate the concordance between the right and left renal volumes. Bland-Altman graphs were used to assess intra- and inter-observer variability. Results: The right renal volume increased from 4.5 ± 1.3 cm³ at 24 weeks to 12.1 ± 1.5 cm³ at 34 weeks. The left renal volume increased from 4.6 ± 0.8 cm³ at 24 weeks to 11.9 ± 1.1 cm³ at 34 weeks. There was a strong correlation between both the right and left renal volumes and gestational age (R² = 0.975 and 0.970, respectively). There were no significant differences between the right and left renal volumes. The mean difference between repeated measures by the same examiner was –0.07 cm³ (–0.88 to 0.75) for the right kidney and –0.21 cm³ (–0.95 to 0.75) for the left kidney. The mean difference between repeated measures obtained by two different examiners was –0.07 cm³ (–1.25 to 1.12) for the right kidney and 0 cm³ (–1.53 to 1.53) for the left kidney. Conclusion: Reference values were generated for fetal renal volume assessed by three-dimensional ultrasonography using the VOCAL method.

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“…Because the fetal liver occupies about two thirds of the fetal abdomen and contributes a great percentage to the fetal weight, the values of FLV obtained at various GA can be used to assess growth-restricted fetuses, as noted by Chang et al 12 This is particularly important in Nigeria, as there is evidence that a high proportion of growth restriction in utero is due to malnutrition. 13 …”

Section: Discussionmentioning

confidence: 99%

2D Sonographic Assessment of the Fetal Liver in Normal Pregnant Nigerian Women

Agwu

Chiegwu

Nwobi

2008

Journal of Diagnostic Medical Sonography

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Precise gestational age (GA) is critical in prenatal care and is important in reducing maternal and perinatal mortality and morbidity. Clinical methods of estimating GA are the woman's last menstrual period (LMP), fundal height, and Delee's or quickening test. However, these methods are unreliable and imprecise for various reasons 1-3 and also depend on indirect measurement of the fetus.This study investigated the relationship between fetal liver volume (FLV) and gestational age (GA) in Nigerian subjects using 2D sonography. Fetal liver volume measurements were obtained from 900 normal singleton fetuses between 15 and 41 weeks GA (mean = 28 weeks). The FLV was computed from anterior-posterior, sagittal, and transverse dimensions of the fetal liver by assuming the liver to be a pyramidal structure. The mean FLV obtained ranged from 4.14 ± 0 cm 3 at 15 weeks to 76.88 ± 7.58 cm 3 at 40 weeks and 79.45 ± 9.32 cm 3 at 41 weeks. A simple regression analysis showed a positive linear relationship between GA and FLV (r = 0.98), which is described by the equation FLV = 53.53 + 3.246 GA. A strong positive correlation was also noted between FLV and biparietal diameter (BPD; r = 0.968), FLV and head circumference (r = 0.960), FLV and abdominal circumference (r = 0.901), and FLV and fetal weight (r = 0.979). Z test analysis showed no significant difference between GA estimated by FLV and GA estimated by BPD or femur length (α = 0.01). The use of FLV determined by 2D sonography has been shown to be accurate in dating pregnancy, and its use in a multiparameter biometry should improve the precision in predicting the expected date of delivery.

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Predicting Fetal Growth Restriction With Renal Volume Using 3-D Ultrasound: Efficacy Evaluation

Cited by 17 publications

References 26 publications

Body-Surface-Area Related Renal Volume: A Common Normal Range from Birth to Adulthood

Body-Surface-Area Related Renal Volume: A Common Normal Range from Birth to Adulthood

Reference Range of Fetal Renal Volume by Three-Dimensional Ultrasonography Using the Vocal Method

2D Sonographic Assessment of the Fetal Liver in Normal Pregnant Nigerian Women

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