Abstract
Background
Glomerular filtration rate (GFR) is conventionally indexed to body surface area (BSA), but this may lead to biased results when applied to subjects of abnormal body size. The aim of our study was to examine the impact of normalization to the BSA and alternative body size descriptors on measured and estimated GFR in overweight and obese children.
Methods
This was a cross-sectional study of 313 children aged 8–9 years old. GFR was measured by 24-h creatinine clearance (CrCl) and additionally estimated from serum creatinine and cystatin C (CysC) using the combined Zappitelli formula, both as absolute values and adjusted to various body size descriptors. The results were compared between 163 normal-weight, 89 overweight and 61 obese children.
Results
Compared to the normal-weight children, mean absolute GFR (both measured and estimated) was higher in the overweight and obese children, whereas BSA-adjusted GFR was lower. Linear regression models fitted in normal-weight children revealed equally close associations between absolute GFR and squared height, ideal body weight (IBW) and BSA derived from IBW. Normalization of GFR to the IBW-derived BSA completely eliminated the discrepancy between absolute and BSA-indexed GFR in overweight and obese children.
Conclusions
Indexing of GFR to BSA calculated from the ideal—rather than actual—body weight is a promising approach to avoid overcorrection when studying obese children. Further studies should assess the accuracy of this approach across the full range of age and BMI distribution.
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References
Savino A, Pelliccia P, Chiarelli F, Mohn A (2010) Obesity-related renal injury in childhood. Horm Res Paediatr 73:303–311
Levey AS, Kramer H (2010) Obesity, glomerular hyperfiltration, and the surface area correction. Am J Kidney Dis 56:255–258
McIntosh JF, Möller E, Van Slyke DD (1928) Studies of urea excretion. III: The influence of body size on urea output. J Clin Invest 6:467–483
Delanaye P, Mariat C, Cavalier E, Krzesinski J-M (2009) Errors induced by indexing glomerular filtration rate for body surface area: reductio ad absurdum. Nephrol Dial Transpl 24:3593–3596
Heaf JG (2007) The origin of the 1 x 73-m2 body surface area normalization: problems and implications. Clin Physiol Funct Imaging 27:135–137
Hallynck TH, Soep HH, Thomis JA, Boelaert J, Daneels R, Dettli L (1981) Should clearance be normalised to body surface or to lean body mass? Br J Clin Pharmacol 11:523–526
Delanaye P, Krzesinski J-M (2011) Indexing of renal function parameters by body surface area: intelligence or folly? Nephron Clin Pract 119:c289–292
Ruggieri G, Rocca AR (2010) Analysis of past and present methods of measuring and estimating body surface area and the resulting evaluation of its doubtful suitability to universal application. Blood Purif 30:296–305
Wuerzner G, Bochud M, Giusti V, Burnier M (2011) Measurement of glomerular filtration rate in obese patients: pitfalls and potential consequences on drug therapy. Obes Facts 4:238–243
Soares AA, Prates AB, Weinert LS, Veronese FV, de Azevedo MJ, Silveiro SP (2013) Reference values for glomerular filtration rate in healthy Brazilian adults. BMC Nephrol 14:54
Peters AM, Perry L, Hooker CA, Howard B, Neilly MDJ, Seshadri N, Sobnack R, Irwin A, Snelling H, Gruning T, Patel NH, Lawson RS, Shabo G, Williams N, Dave S, Barnfield MC (2012) Extracellular fluid volume and glomerular filtration rate in 1878 healthy potential renal transplant donors: effects of age, gender, obesity and scaling. Nephrol Dial Transpl 27:1429–1437
Si H, Lei Z, Li S, Liu J, Geng J, Chen S (2013) Lean body mass is better than body surface area in correcting GFR. Clin Nucl Med 38:e210–215
Redal-Baigorri B, Rasmussen K, Heaf JG (2013) The use of absolute values improves performance of estimation formulae: a retrospective cross sectional study. BMC Nephrol 14:271
Anastasio P, Spitali L, Frangiosa A, Molino D, Stellato D, Cirillo E, Pollastro RM, Capodicasa L, Sepe J, Federico P, Gaspare De Santo N (2000) Glomerular filtration rate in severely overweight normotensive humans. Am J Kidney Dis 35:1144–1148
Wuerzner G, Pruijm M, Maillard M, Bovet P, Renaud C, Burnier M, Bochud M (2010) Marked association between obesity and glomerular hyperfiltration: a cross-sectional study in an African population. Am J Kidney Dis 56:303–312
Janmahasatian S, Duffull SB, Chagnac A, Kirkpatrick CMJ, Green B (2008) Lean body mass normalizes the effect of obesity on renal function. Br J Clin Pharmacol 65:964–965
Duffull SB, Dooley MJ, Green B, Poole SG, Kirkpatrick CMJ (2004) A standard weight descriptor for dose adjustment in the obese patient. Clin Pharmacokinet 43:1167–1178
Eriksen BO, Melsom T, Mathisen UD, Jenssen TG, Solbu MD, Toft I (2011) GFR normalized to total body water allows comparisons across genders and body sizes. J Am Soc Nephrol 22:1517–1525
Delanaye P, Radermecker RP, Rorive M, Depas G, Krzesinski JM (2005) Indexing glomerular filtration rate for body surface area in obese patients is misleading: concept and example. Nephrol Dial Transpl 20:2024–2028
Peters AM, Glass DM (2010) Use of body surface area for assessing extracellular fluid volume and glomerular filtration rate in obesity. Am J Nephrol 31:209–213
Bird NJ, Henderson BL, Lui D, Ballinger JR, Peters AM (2003) Indexing glomerular filtration rate to suit children. J Nucl Med 44:1037–1043
Larsen PS, Kamper-Jorgensen M, Adamson A, Barros H, Bonde JP, Brescianini S, Brophy S, Casas M, Charles M-AA, Devereux G, Eggesbo M, Fantini MP, Frey U, Gehring U, Grazuleviciene R, Henriksen TB, Hertz-Picciotto I, Heude B, Hryhorczuk DO, Inskip H, Jaddoe VWV, Lawlor DA, Ludvigsson J, Kelleher C, Kiess W, Koletzko B, Kuehni CE, Kull I, Kyhl HB, Magnus P, Momas I, Murray D, Pekkanen J, Polanska K, Porta D, Poulsen G, Richiardi L, Roeleveld N, Skovgaard AM, Sram RJ, Strandberg-Larsen K, Thijs C, Van Eijsden M, Wright J, Vrijheid M, Andersen A-MNM, Kamper-Jørgensen M, Adamson A, Barros H, Bonde JP, Brescianini S, Brophy S, Casas M, Charles M-AA, Devereux G, Eggesbø M, Fantini MP, Frey U, Gehring U, Grazuleviciene R, Henriksen TB, Hertz-Picciotto I, Heude B, Hryhorczuk DO, Inskip H, Jaddoe VWV, Lawlor DA, Ludvigsson J, Kelleher C, Kiess W, Koletzko B, Kuehni CE, Kull I, Kyhl HB, Magnus P, Momas I, Murray D, Pekkanen J, Polanska K, Porta D, Poulsen G, Richiardi L, Roeleveld N, Skovgaard AM, Sram RJ, Strandberg-Larsen K, Thijs C, Van Eijsden M, Wright J, Vrijheid M, Andersen A-MNM (2013) Pregnancy and birth cohort resources in europe: a large opportunity for aetiological child health research. Paediatr Perinat Epidemiol 27:393–414
Durão C, Severo M, Oliveira A, Moreira P, Guerra A, Barros H, Lopes C, Durao C, Severo M, Oliveira A, Moreira P, Guerra A, Barros H, Lopes C (2014) Evaluating the effect of energy-dense foods consumption on preschool children’s body mass index: a prospective analysis from 2 to 4 years of age. Eur J Nutr 54:835–843
de Onis M, Onyango AW, Borghi E, Siyam A, Nishida C, Siekmann J (2007) Development of a WHO growth reference for school-aged children and adolescents. Bull World Heal Organ 85:660–667
Fenton TR, Kim JH (2013) A systematic review and meta-analysis to revise the Fenton growth chart for preterm infants. BMC Pediatr 13:59
Peters AM, Snelling HLR, Glass DM, Bird NJ (2011) Estimation of lean body mass in children. Br J Anaesth 106:719–723
Schaefer F, Georgi M, Zieger A, Schärer K (1994) Usefulness of bioelectric impedance and skinfold measurements in predicting fat-free mass derived from total body potassium in children. Pediatr Res 35:617–624
Haycock GB, Schwartz GJ, Wisotsky DH (1978) Geometric method for measuring body surface area: a height–weight formula validated in infants, children, and adults. J Pediatr 93:62–66
Ross EL, Jorgensen J, DeWitt PE, Okada C, Porter R, Haemer M, Reiter PD (2014) Comparison of 3 body size descriptors in critically ill obese children and adolescents: implications for medication dosing. J Pediatr Pharmacol Ther 19:103–110
Myers GL, Miller WG, Coresh J, Fleming J, Greenberg N, Greene T, Hostetter T, Levey AS, Panteghini M, Welch M, Eckfeldt JH (2006) Recommendations for improving serum creatinine measurement: a report from the Laboratory Working Group of the National Kidney Disease Education Program. Clin Chem 52:5–18
Grubb A, Blirup-Jensen S, Lindström V, Schmidt C, Althaus H, Zegers I (2010) First certified reference material for cystatin C in human serum ERM-DA471/IFCC. Clin Chem Lab Med 48:1619–1621
Zappitelli M, Parvex P, Joseph L, Paradis G, Grey V, Lau S, Bell L (2006) Derivation and validation of cystatin C-based prediction equations for GFR in children. Am J Kidney Dis 48:221–230
Schwartz GJ, Munoz A, Schneider MF, Mak RH, Kaskel F, Warady BA, Furth SL (2009) New equations to estimate GFR in children with CKD. J Am Soc Nephrol 20:629–637
Remer T, Neubert A, Maser-Gluth C (2002) Anthropometry-based reference values for 24-h urinary creatinine excretion during growth and their use in endocrine and nutritional research. Am J Clin Nutr 75:561–569
Tomaszewski M, Charchar FJ, Maric C, McClure J, Crawford L, Grzeszczak W, Sattar N, Zukowska-Szczechowska E, Dominiczak AF (2007) Glomerular hyperfiltration: a new marker of metabolic risk. Kidney Int 71:816–821
Chagnac A, Weinstein T, Korzets A, Ramadan E, Hirsch J, Gafter U (2000) Glomerular hemodynamics in severe obesity. Am J Physiol Ren Physiol 278:F817–822
Naour N, Fellahi S, Renucci J-F, Poitou C, Rouault C, Basdevant A, Dutour A, Alessi M-C, Bastard J-P, Clément K, Guerre-Millo M (2009) Potential contribution of adipose tissue to elevated serum cystatin C in human obesity. Obesity (Silver Spring) 17:2121–2126
Roos JF, Doust J, Tett SE, Kirkpatrick CMJ (2007) Diagnostic accuracy of cystatin C compared to serum creatinine for the estimation of renal dysfunction in adults and children–a meta-analysis. Clin Biochem 40:383–391
Piepsz A, Tondeur M, Ham H (2008) Escaping the correction for body surface area when calculating glomerular filtration rate in children. Eur J Nucl Med Mol Imaging 35:1669–1672
Lemoine S, Guebre-Egziabher F, Sens F, Nguyen-Tu M-S, Juillard L, Dubourg L, Hadj-Aissa A (2014) Accuracy of GFR estimation in obese patients. Clin J Am Soc Nephrol 9:720–727
Pai MP, Cojutti P, Pea F (2014) Levofloxacin dosing regimen in severely morbidly obese patients (BMI ≥40 kg/m(2)) should be guided by creatinine clearance estimates based on ideal body weight and optimized by therapeutic drug monitoring. Clin Pharmacokinet 53:753–762
Maskatia SA, Spinner JA, Nutting AC, Slesnick TC, Krishnamurthy R, Morris SA (2013) Impact of obesity on ventricular size and function in children, adolescents and adults with Tetralogy of Fallot after initial repair. Am J Cardiol 112:594–598
Schwartz GJ, Work DF (2009) Measurement and estimation of GFR in children and adolescents. Clin J Am Soc Nephrol 4:1832–1843
Hellerstein S, Berenbom M, Alon US, Warady BA (1998) Creatinine clearance following cimetidine for estimation of glomerular filtration rate. Pediatr Nephrol 12:49–54
Correia-Costa L, Afonso AC, Schaefer F, Guimarães JT, Bustorff M, Guerra A, Barros H, Azevedo A (2015) Decreased renal function in overweight and obese prepubertal children. Pediatr Res 78:436–444
Acknowledgments
The authors gratefully acknowledge the families enrolled in Generation XXI for their kindness, all members of the research team for their enthusiasm and perseverance and the participating hospitals and their staff for their help and support.
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None of the authors have any financial or nonfinancial competing interests concerning the present study.
Sources of funding
This project was supported by FEDER funds from Programa Operacional Factores de Competitividade—COMPETE (FCOMP-01-0124-FEDER-028751)—and by national funds from the Portuguese Foundation for Science and Technology, Lisbon, Portugal (PTDC/DTP-PIC/0239/2012). Liane Correia-Costa was supported by the Portuguese Foundation for Science and Technology (grant SFRH/SINTD/95898/2013) and Franz Schaefer was supported by the ERA-EDTA Research Programme and the KfH Foundation for Preventive Medicine.
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The ObiKid project was approved by the Ethics Committee of Centro Hospitalar São João, Porto, Portugal, and by the Faculty of Medicine of the University of Porto and complies with the Helsinki Declaration and the current national legislation. Written informed consent from parents (or their legal substitute) and verbal assent from children was obtained.
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Liane Correia-Costa and Franz Schaefer contributed equally as first authors to this work.
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Correia-Costa, L., Schaefer, F., Afonso, A.C. et al. Normalization of glomerular filtration rate in obese children. Pediatr Nephrol 31, 1321–1328 (2016). https://doi.org/10.1007/s00467-016-3367-8
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DOI: https://doi.org/10.1007/s00467-016-3367-8