Tatjana Van Der Heggen1,2, Evelyn Dhont3,4,5, Harlinde Peperstraete6, Joris R Delanghe7, Johan Vande Walle3, Peter De Paepe4,8, Pieter A De Cock4,5,8. 1. Department of Pediatrics, Ghent University Hospital, 3K12D, Corneel Heymanslaan 10, 9000, Ghent, Belgium. tatjana.vanderheggen@ugent.be. 2. Heymans Institute of Pharmacology, Ghent University, Ghent, Belgium. tatjana.vanderheggen@ugent.be. 3. Department of Pediatrics, Ghent University Hospital, 3K12D, Corneel Heymanslaan 10, 9000, Ghent, Belgium. 4. Heymans Institute of Pharmacology, Ghent University, Ghent, Belgium. 5. Department of Pediatric Intensive Care, Ghent University Hospital, Ghent, Belgium. 6. Department of Cardiac Intensive Care, Ghent University Hospital, Ghent, Belgium. 7. Department of Laboratory Medicine, Ghent University, Ghent, Belgium. 8. Department of Pharmacy, Ghent University Hospital, Ghent, Belgium.
Abstract
BACKGROUND: Augmented renal clearance (ARC), an increase in kidney function with enhanced elimination of circulating solute, has been increasingly recognized in critically ill adults. In a pediatric intensive care setting, data are scarce. The primary objective of this study was to investigate the prevalence of ARC in critically ill children. Secondary objectives included a risk factor analysis for the development of ARC and a comparison of two methods for assessment of renal function. METHODS: In 105 critically ill children between 1 month and 15 years of age, glomerular filtration rate (GFR) was measured by means of a daily 24-h creatinine clearance (24 h ClCr) and compared to an estimated GFR using the revised Schwartz formula. Logistic regression analysis was used to identify risk factors for ARC. RESULTS: Overall, 67% of patients expressed ARC and the proportion of ARC patients decreased during consecutive days. ARC patients had a median ClCr of 142.2 ml/min/1.73m2 (IQR 47.1). Male gender and antibiotic treatment were independently associated with the occurrence of ARC. The revised Schwartz formula seems less appropriate for ARC detection. CONCLUSIONS: A large proportion of critically ill children develop ARC during their stay at the intensive care unit. Clinicians should be cautious when using Schwartz formula to detect ARC. Our findings require confirmation from large study cohorts and investigation of the relationship with clinical outcome.
BACKGROUND: Augmented renal clearance (ARC), an increase in kidney function with enhanced elimination of circulating solute, has been increasingly recognized in critically ill adults. In a pediatric intensive care setting, data are scarce. The primary objective of this study was to investigate the prevalence of ARC in critically illchildren. Secondary objectives included a risk factor analysis for the development of ARC and a comparison of two methods for assessment of renal function. METHODS: In 105 critically illchildren between 1 month and 15 years of age, glomerular filtration rate (GFR) was measured by means of a daily 24-h creatinine clearance (24 h ClCr) and compared to an estimated GFR using the revised Schwartz formula. Logistic regression analysis was used to identify risk factors for ARC. RESULTS: Overall, 67% of patients expressed ARC and the proportion of ARCpatients decreased during consecutive days. ARCpatients had a median ClCr of 142.2 ml/min/1.73m2 (IQR 47.1). Male gender and antibiotic treatment were independently associated with the occurrence of ARC. The revised Schwartz formula seems less appropriate for ARC detection. CONCLUSIONS: A large proportion of critically illchildren develop ARC during their stay at the intensive care unit. Clinicians should be cautious when using Schwartz formula to detect ARC. Our findings require confirmation from large study cohorts and investigation of the relationship with clinical outcome.
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