BACKGROUND: Renal inulin clearance is the gold standard for glomerular filtration rate (GFR), but is compromised by problems of collecting urine samples in children, especially those <6 years of age or with a bladder dysfunction. Therefore, we should utilize the serum creatinine (Cr)-based estimated GFR (eGFR), measuring serum Cr by enzymatic method. The updated Schwartz formulae were reported by enzymatic Cr instead of by the Jaffe method in American children aged 1-16 years old. We believe it would be better to determine serum Cr-based eGFR by the enzymatic method in Japanese children for evaluation of renal function. METHODS: Serum Cr-based eGFR was determined by measuring inulin clearance and serum Cr level in 76 pediatric chronic kidney disease (CKD) patients (49 males and 27 females) aged 2-11 years with no underlying disease that would affect renal function. RESULTS: We showed the inulin clearance by expression of the body length/serum Cr ratio in pediatric CKD patients, which resulted in the equation: [Formula: see text]. Additionally, we suggest the following serum Cr-based eGFR formula passing through the origin: [Formula: see text], because it is simple and easy to remember, thus making it clinically useful. CONCLUSION: The new eGFR formula derived from body length and serum Cr level is applicable for clinical screening of renal function in Asian as well as Japanese children aged between 2 and 11 years old.
BACKGROUND: Renal inulin clearance is the gold standard for glomerular filtration rate (GFR), but is compromised by problems of collecting urine samples in children, especially those <6 years of age or with a bladder dysfunction. Therefore, we should utilize the serum creatinine (Cr)-based estimated GFR (eGFR), measuring serum Cr by enzymatic method. The updated Schwartz formulae were reported by enzymatic Cr instead of by the Jaffe method in American children aged 1-16 years old. We believe it would be better to determine serum Cr-based eGFR by the enzymatic method in Japanese children for evaluation of renal function. METHODS: Serum Cr-based eGFR was determined by measuring inulin clearance and serum Cr level in 76 pediatric chronic kidney disease (CKD) patients (49 males and 27 females) aged 2-11 years with no underlying disease that would affect renal function. RESULTS: We showed the inulin clearance by expression of the body length/serum Cr ratio in pediatric CKDpatients, which resulted in the equation: [Formula: see text]. Additionally, we suggest the following serum Cr-based eGFR formula passing through the origin: [Formula: see text], because it is simple and easy to remember, thus making it clinically useful. CONCLUSION: The new eGFR formula derived from body length and serum Cr level is applicable for clinical screening of renal function in Asian as well as Japanese children aged between 2 and 11 years old.
Authors: Ronald J Hogg; Susan Furth; Kevin V Lemley; Ronald Portman; George J Schwartz; Josef Coresh; Ethan Balk; Joseph Lau; Adeera Levin; Annamaria T Kausz; Garabed Eknoyan; Andrew S Levey Journal: Pediatrics Date: 2003-06 Impact factor: 7.124
Authors: Emil den Bakker; Reinoud Gemke; Joanna A E van Wijk; Isabelle Hubeek; Birgit Stoffel-Wagner; Arend Bökenkamp Journal: Pediatr Nephrol Date: 2018-05-17 Impact factor: 3.714