Correlation between renal parenchymal thickness and EGFR in chronic kidney disease

Background Renal length, volume, and parenchymal thickness are important clinical parameters, yet data concerning the accuracy and reproducibility of ultrasound (US)-based renal length and volume assessment in patients with chronic kidney disease (CKD) are scarce. Purpose To establish whether renal length, volume, and parenchymal thickness can be reliably measured with renal US in patients with CKD. Material and Methods All participants underwent renal US, immediately followed by 3-T magnetic resonance imaging (MRI). Renal length, width, transverse diameter, and parenchyma thickness were measured with both methods; renal volume was calculated using the ellipsoid formula. A total of 45 patients with CKD (eGFR [mean ± SD] 57.4 ± 4.4 mL/min/1.73 m2) and 46 participants without CKD (eGFR 97.0 ± 2.4 mL/min/1.73 m2) were included. Results US-measured renal length correlated strongly with MRI-measured renal length in no-CKD patients (Spearman’s r = 0.83 and 0.85 for the right and left kidney, respectively; P < 0.005) and CKD patients (r = 0.89 and 0.92 for the right and left kidney, respectively; P < 0.005). There was a significant but weaker correlation between MRI- and US-measured right and left renal volume (r = 0.72, P < 0.005) in no-CKD (r = 0.74 and r = 0.72, respectively; for both: P < 0.005) and CKD patients (r = 0.83 and 0.85, P < 0.005). Weak to moderate correlations were found for parenchyma thickness for the right (CKD group: r = 0.29, no-CKD: r = 0.23; for both: P < 0.05) and left kidney (CKD: r = 0.52, no-CKD group: r = 0.37, P < 0.05). Both intra-observer (Pearson’s correlations of 0.82 for the right and 0.89 for the left kidney) and inter-observer (Lin’s correlation coefficient of 0.90 for the right and 0.82 for the left kidney) reproducibility of US-assessed renal length was high. Conclusions US-based assessment of renal length in CKD patients is comparable to MRI measures. Both intra- and inter-observer reproducibility of US-assessed renal length in CKD patients are high. Measurements of US renal volume and parenchymal thickness should, however, be interpreted with caution.

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Correlation of Ultrasonographic Parameters with Serum Creatinine in Chronic Kidney Disease

Journal of Clinical Imaging Science ◽

10.4103/2156-7514.114809 ◽

2013 ◽

Vol 3 ◽

pp. 28 ◽

Cited By ~ 15

Author(s):

Jagdeesh K. Siddappa ◽

Saurabh Singla ◽

Mohammed Al Ameen ◽

S.C. Rakshith ◽

Naveen Kumar

Keyword(s):

Chronic Kidney Disease ◽

Kidney Disease ◽

Serum Creatinine ◽

National Kidney Foundation ◽

Longitudinal Size ◽

Kidney Replacement Therapy ◽

Grade 3 ◽

The Relationship ◽

Parenchymal Thickness ◽

One Way Anova

Objective: The purpose of our study is to correlate renal echogenicity with serum creatinine in order to determine the significance of renal echogenicity when it comes to identifying the progression of chronic kidney disease (CKD) and for the sonographic grading of CKD. Materials and Methods: Sixty patients above 30 years of age who had been diagnosed with CKD according to the guidelines of the National Kidney Foundation were included in the study. Patients on kidney replacement therapy or with fatty liver findings on ultrasonography were excluded. Ultrasounds of kidneys were performed by two radiologists who were blind to the patients’ serum creatinine levels. Renal cortical echogenicity was compared with serum creatinine. Statistical analysis was performed using one-way ANOVA followed by Scheffe's test. The relationship between serum creatinine and sonographic features was assessed by correlation coefficient analysis. A P value less than 0.05 was considered statistically significant. Results: Mean serum creatinine was 2.80 mg/dl for Grade 1 (range: 0.9-9.2 mg/dl), 3.69 mg/dl for Grade 2 (range: 1.2-10.3 mg/dl), 3.86 mg/dl for Grade 3 (range: 1.1-6.5 mg/dl), and 7.90 mg/dl for Grade 4 (range: 3.1-11.4 mg/dl). The grades being determined by cortical echogenicity on imaging A statistically significant, positive correlation was observed between serum creatinine and grading based on cortical echogenicity (P = 0.004). Conclusion: Renal echogenicity and its grading correlates better with serum creatinine in CKD than other sonographic parameters such as longitudinal size, parenchymal thickness, and cortical thickness. Hence, renal echogenicity is a better parameter than serum creatinine for estimating renal function in CKD, and has the added advantage of irreversibility.

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Can measurement of the foetal renal parenchymal thickness with ultrasound be used as an indirect measure of nephron number?

Journal of Developmental Origins of Health and Disease ◽

10.1017/s204017442000015x ◽

2020 ◽

pp. 1-9 ◽

Cited By ~ 1

Author(s):

Sonja Brennan ◽

David Watson ◽

Michal Schneider ◽

Donna Rudd ◽

Yogavijayan Kandasamy

Keyword(s):

Chronic Kidney Disease ◽

Blood Flow ◽

Kidney Disease ◽

Renal Artery ◽

Artery Blood Flow ◽

Nephron Number ◽

Foetal Growth ◽

Significant Difference ◽

Prospective Longitudinal ◽

Parenchymal Thickness

Abstract Chronic kidney disease continues to be under recognised and is associated with a significant global health burden and costs. An adverse intrauterine environment may result in a depleted nephron number and an increased risk of chronic kidney disease. Antenatal ultrasound was used to measure the foetal renal parenchymal thickness (RPT), as a novel method to estimate nephron number. Foetal renal artery blood flow was also assessed. This prospective, longitudinal study evaluated the foetal kidneys of 102 appropriately grown and 30 foetal growth-restricted foetuses between 20 and 37 weeks gestational age (GA) to provide vital knowledge on the influences foetal growth restriction has on the developing kidneys. The foetal RPT and renal artery blood flow were measured at least every 4 weeks using ultrasound. The RPT was found to be significantly thinner in growth-restricted foetuses compared to appropriately grown foetuses [likelihood ratio (LR) = 21.06, P ≤ 0.0001] and the difference increases with GA. In foetuses with the same head circumference, a growth-restricted foetus was more likely to have a thinner parenchyma than an appropriately grown foetus (LR = 8.9, P = 0.0028), supporting the principle that growth-restricted foetuses preferentially shunt blood towards the brain. No significant difference was seen in the renal arteries between appropriately grown and growth-restricted foetuses. Measurement of the RPT appears to be a more sensitive measure than current methods. It has the potential to identify infants with a possible reduced nephron endowment allowing for monitoring and interventions to be focused on individuals at a higher risk of developing future hypertension and chronic kidney disease.

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Correlation of Duplex Ultrasonographic Parameters with Glomerular Filtration Rate in Chronic Kidney Disease

Journal of Nepal Health Research Council ◽

10.33314/jnhrc.v17i01.1277 ◽

2019 ◽

Vol 17 (01) ◽

pp. 32-37

Author(s):

Karun Devkota ◽

Mukesh Kumar Gupta ◽

Ashok Raj Pant ◽

Prahlad Karki

Keyword(s):

Chronic Kidney Disease ◽

Glomerular Filtration Rate ◽

Kidney Disease ◽

Glomerular Filtration ◽

Filtration Rate ◽

Resistive Index ◽

P Value ◽

Diastolic Velocity ◽

Parenchymal Thickness ◽

Renal Length

Background: Chronic kidney disease encompasses a spectrum of different pathophysiological processes associated with abnormal renal function and a progressive decline in glomerular filtration rate. Duplex ultrasonography is widely available and important imaging investigation required in the work?up of chronic kidney disease. The objective of the study was to assess correlation of renal duplex ultrasonographic parameters with decreased glomerular filtration rate in patients with chronic kidney disease.Methods: This was a crosssectional hospital-based study. A total of sixty-two patients with chronic kidney disease referred for ultrasonography were included in the study. Patients were evaluated by duplex ultrasonography. Correlation of renal length, parenchymal thickness, cortical thickness, cortical echogenicity, peak systolic velocity, end diastolic velocity pulsatility index and resistive index with glomerular filtration rate was evaluated by using Pearson’s correlation coefficient.Results: Chronic kidney disease was seen more prevalent in 41-50 years of age group. The major risk factors associated with Chronic kidney disease was Hypertension and Diabetes Mellitus. A significant positive correlation of renal length, parenchymal thickness, cortical thickness (p value < 0.01) and end diastolic velocity (p value < 0.05) with eGFR and significant negative correlation of cortical echogenicity, resistive index and pulsatility index (p value < 0.01) with eGFR was derived.Conclusions: Duplex sonographic findings of renal length, parenchymal thickness, cortical thickness, cortical echogenicity, end diastolic velocity, pulsatility index and resistive index are found to be useful parameters in evaluation of chronic kidney disease.Keywords: Chronic kidney disease; duplex ultrasonography; glomerular filtration rate.

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