scholarly journals Comparative Performance of Creatinine-Based Estimated Glomerular Filtration Rate Equations in the Malays: A Pilot Study in Tertiary Hospital in Malaysia

2017 ◽  
Vol 2017 ◽  
pp. 1-7 ◽  
Author(s):  
Maisarah Jalalonmuhali ◽  
Ng Kok Peng ◽  
Lim Soo Kun
Keyword(s):  
Glomerular Filtration Rate ◽  
Glomerular Filtration ◽  
Filtration Rate ◽  
Estimated Glomerular Filtration Rate ◽  
Tertiary Hospital ◽  
Outpatient Setting ◽  
Rate Equations ◽  
Comparative Performance ◽  
Cross Sectional ◽  
Measured Gfr

Aim. To validate the accuracy of estimated glomerular filtration rate (eGFR) equations in Malay population attending our hospital in comparison with radiolabeled measured GFR.Methods. A cross-sectional study recruiting volunteered patients in the outpatient setting. Chromium EDTA (51Cr-EDTA) was used as measured GFR. The predictive capabilities of Cockcroft-Gault equation corrected for body surface area (CGBSA), four-variable Modification of Diet in Renal Disease (4-MDRD), and Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equations were calculated.Results. A total of 51 subjects were recruited with mean measured GFR 42.04 (17.70–111.10) ml/min/1.73 m2. Estimated GFR based on CGBSA, 4-MDRD, and CKD-EPI were 40.47 (16.52–115.52), 35.90 (14.00–98.00), and 37.24 (14.00–121.00), respectively. Higher accuracy was noted in 4-MDRD equations throughout all GFR groups except for subgroup of GFR ≥ 60 ml/min/1.73 m2where CGBSA was better.Conclusions. The 4-MDRD equation seems to perform better in estimating GFR in Malay CKD patients generally and specifically in the subgroup of GFR < 60 ml/min/1.73 m2and both BMI subgroups.

scholarly journals Applicability of Different Estimated Glomerular Filtration Rate Equations in Chinese Healthy Population: A Cross-Sectional Study

2021 ◽  
Author(s):  
Lu Wei ◽  
Xue Shen ◽  
Juan Zhang ◽  
Zhenzhu Yong ◽  
Qun Zhang ◽  
...  
Keyword(s):  
Older Adults ◽  
Glomerular Filtration Rate ◽  
Glomerular Filtration ◽  
Filtration Rate ◽  
Estimated Glomerular Filtration Rate ◽  
Cross Sectional Study ◽  
Rate Equations ◽  
Healthy Population ◽  
Cross Sectional ◽  
The Difference

Abstract Objective: To estimate kidney function with aging by equations based on serum creatinine (Scr) and investigate the applicability of these equations in estimated glomerular filtration rate (eGFR) in healthy Chinese population. Patients and methods: A total of 34,416 healthy individuals were enrolled in this study, eGFR was calculated by CKD-EPI, FAS and Xiangya equations. Plotted scatter diagrams were adopted to show the difference between eGFR by above three equations. Agreement analysis between these equations was quantified by the linear weighted κ statistic.Results: eGFRs by CKD-EPI and Xiangya equation had a constant decline with aging. eGFR by FAS equation was approximately 116.5 mL/min/1.73m2 under 40 years, then decreased with a rate of 1.27 mL/min/1.73 m2/year. The difference was relatively small, and substantial agreement was observed between CKD-EPI and FAS equations with Scr levels above 0.9 mg/dL in males (κ =0.798) or 0.7 mg/dL in females (κ =0.745). The agreement between CKD-EPI and FAS equations was moderate to near-perfect in non-elderly (κ 0.617-0.901 for males and 0.536-0.861 for females), whereas was fair to moderate in older adults (κ 0.494-0.513 for males and 0.373-0.526 for females). eGFR by CKD-EPI was slightly higher than which by FAS equation in older population. The agreement between Xiangya and CKD-EPI or FAS equation was all slight (κ＜0.2).Conclusion: FAS equation could be used to evaluate declining rate of eGFR in healthy population. We recommend FAS or CKD-EPI equation in non-elderly adults, and FAS equation in older adults to calculate eGFR. More verification is needed, especially in older adults and population with low Scr level.

scholarly journals Estimated glomerular filtration rate equations in people of self-reported black ethnicity in the United Kingdom: Inappropriate adjustment for ethnicity may lead to reduced access to care

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0255869
Author(s):  
Rouvick M. Gama ◽  
Amanda Clery ◽  
Kathryn Griffiths ◽  
Neil Heraghty ◽  
Adrien M. Peters ◽  
...  
Keyword(s):  
United Kingdom ◽  
Glomerular Filtration Rate ◽  
African Americans ◽  
Glomerular Filtration ◽  
Filtration Rate ◽  
Estimated Glomerular Filtration Rate ◽  
Rate Equations ◽  
The United Kingdom ◽  
The Uk ◽  
Measured Gfr

Assessment in African populations suggest adjustment for ethnicity in estimated glomerular filtration rate (eGFR) equations derived from African Americans lead to overestimation of GFR and failure to determine severity in chronic kidney disease (CKD). However, studies in African Europeans are limited. We aimed to assess accuracy of eGFR equations, with and without ethnicity adjustment compared with measured GFR in people of Black ethnicity in the United Kingdom. Performance of MDRD, CKD-EPI (with and without ethnicity adjustment), Full Age Spectrum (FAS), revised Lund Malmö (LM Revised), and European Kidney Function Consortium (EKFC) eGFR equations were assessed compared to 51Cr-EDTA GFR studies extracted from hospital databases. Participants with albumin <30g/l, liver disease, <18 years, of non-Black or non-White self-reported ethnicity were excluded. Agreement was assessed by bias, precision and 30%-accuracy and was stratified for ethnicity and GFR. 1888 51Cr-EDTA studies were included (Mean age-53.7yrs; 43.6% female; 14.1% Black ethnicity). Compared to White participants, eGFR-MDRD and eGFR-CKD-EPI equations in Black participants significantly overestimated GFR (bias 20.3 and 19.7 ml/min/1.73m2 respectively, p<0.001). Disregarding the ethnicity adjustment significantly improved GFR estimates for Black participants (bias 6.7 and 2.4ml/min/1.73m2 for eGFR-MDRD and eGFR-CKD-EPI respectively, p<0.001). The LM Revised equation had the smallest bias for both White and Black participants (5.8ml and -1.1ml/min/1.73m2 respectively). 30%-accuracy was superior for GFR≥60ml/min/1.73m2 compared to <60ml/min/1.73m2 using eGFR-CKD-EPI equation for both White and Black participants (p<0.001). Multivariate regression methodology with adjustment for age, sex and log(serum creatinine) in the cohort yielded an ethnicity coefficient of 1.018 (95% CI: 1.009–1.027). Overestimation of measured GFR with eGFR equations using ethnicity adjustment factors may lead to reduced CKD diagnosis and under-recognition of severity in people of Black ethnicity. Our findings suggest that ethnicity adjustment for GFR estimation in non-African Americans may not be appropriate for use in people of Black ethnicity in the UK.

scholarly journals Performance of Cystatin C– and Creatinine-Based Estimated Glomerular Filtration Rate Equations Depends on Patient Characteristics

2015 ◽  
Vol 61 (10) ◽  
pp. 1265-1272 ◽  
Author(s):  
Jeffrey W Meeusen ◽  
Andrew D Rule ◽  
Nikolay Voskoboev ◽  
Nikola A Baumann ◽  
John C Lieske
Keyword(s):  
Glomerular Filtration Rate ◽  
Kidney Disease ◽  
Glomerular Filtration ◽  
Cystatin C ◽  
Filtration Rate ◽  
Estimated Glomerular Filtration Rate ◽  
Patient Characteristics ◽  
Transplant Recipients ◽  
Ckd Stage ◽  
Measured Gfr

Abstract BACKGROUND The Kidney Disease Improving Global Outcomes (KDIGO) guideline recommends use of a cystatin C–based estimated glomerular filtration rate (eGFR) to confirm creatinine-based eGFR between 45 and 59 mL · min−1 · (1.73 m2)−1. Prior studies have demonstrated that comorbidities such as solid-organ transplant strongly influence the relationship between measured GFR, creatinine, and cystatin C. Our objective was to evaluate the performance of cystatin C–based eGFR equations compared with creatinine-based eGFR and measured GFR across different clinical presentations. METHODS We compared the performance of the CKD-EPI 2009 creatinine-based estimated GFR equation (eGFRCr) and the newer CKD-EPI 2012 cystatin C–based equations (eGFRCys and eGFRCr-Cys) with measured GFR (iothalamate renal clearance) across defined patient populations. Patients (n = 1652) were categorized as transplant recipients (n = 568 kidney; n = 319 other organ), known chronic kidney disease (CKD) patients (n = 618), or potential kidney donors (n = 147). RESULTS eGFRCr-Cys showed the most consistent performance across different clinical populations. Among potential kidney donors without CKD [stage 2 or higher; eGFR &gt;60 mL · min−1 · (1.73 m2)−1], eGFRCys and eGFRCr-Cys demonstrated significantly less bias than eGFRCr; however, all 3 equations substantially underestimated GFR when eGFR was &lt;60 mL · min−1 · (1.73 m2)−1. Among transplant recipients with CKD stage 3B or greater [eGFR &lt;45 mL · min−1 · (1.73 m2)−1], eGFRCys was significantly more biased than eGFRCr. No clear differences in eGFR bias between equations were observed among known CKD patients regardless of eGFR range or in any patient group with a GFR between 45 and 59 mL · min−1 · (1.73 m2)−1. CONCLUSIONS The performance of eGFR equations depends on patient characteristics that are readily apparent on presentation. Among the 3 CKD-EPI equations, eGFRCr-Cys performed most consistently across the studied patient populations.

scholarly journals Microalbuminuria risks and glomerular filtration in children with sickle cell anaemia in Nigeria

2019 ◽  
Vol 45 (1) ◽  
Author(s):  
I. E. Ocheke ◽  
S. Mohamed ◽  
E. S. Okpe ◽  
F. Bode-Thomas ◽  
M. I. McCullouch
Keyword(s):  
Risk Factors ◽  
Glomerular Filtration Rate ◽  
Glomerular Filtration ◽  
Sickle Cell ◽  
Filtration Rate ◽  
Sickle Cell Anaemia ◽  
Estimated Glomerular Filtration Rate ◽  
Kidney Damage ◽  
Strong Positive Correlation ◽  
Cross Sectional

Abstract Introduction Evidence of kidney damage is observed in children with sickle cell anaemia (SCA) and this continues through adulthood with progression to severe functional impairment in some. One of the earliest features of kidney damage associated with SCA is microalbuminuria. Our objective was to determine the risk factors of microalbuminuria in these children and its relationship with estimated glomerular filtration rate. Methods This was a cross-sectional and comparative study involving three hundred and twenty three children with SCA in steady state and equal numbers of apparently healthy age and sex matched haemoglobin AA (HbAA) control, aged 6 months to 18 years. They were consecutively recruited over a 6 month period. Result Microalbuminuria was present in 26% of the study subjects compared with 1.85% of control P = 0.001). Anaemia and high estimated glomerular filtration rate (eGFR) showed strong positive correlation with microalbuminuria (OR = 3.19, CI 0.953–1.116, p = 0.003 and OR = 1.7, CI 1.042–1.066, p = 0.001 respectively). Similarly, eGFR was higher in subjects with SCA than in controls and as well as in those with microalbuminuria compared with those who do not (p = < 0.01). Conclusions The two most important risk factors for microalbuminuria were anaemia and high eGFR. Age category was associated more with microalbuminuria than just age as a variable. Glomerular filtration rate was higher in children with microalbuminuria than those who do not and it was also higher in children with SCA than in control.

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