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Caceres Guido P, Perez M, Halac A, Ferrari M, Ibarra M, Licciardone N, Castaños C, Gravina LP, Jimenez C, Garcia Bournissen F, Schaiquevich P. Population pharmacokinetics of amikacin in patients with pediatric cystic fibrosis. Pediatr Pulmonol 2019; 54:1801-1810. [PMID: 31402602 DOI: 10.1002/ppul.24468] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 07/21/2019] [Indexed: 01/20/2023]
Abstract
INTRODUCTION Amikacin is commonly used in patients with pediatric cystic fibrosis (CF) for the treatment of pulmonary exacerbations. Amikacin efficacy is related to maximum plasma concentration/minimum inhibitory concentration (Cmax/MIC) ratio >8. Pharmacokinetic data in patients with pediatric CF are scarce. The aim of this study was to develop a population pharmacokinetic (PopPK) model describing amikacin disposition in patients with pediatric CF. METHODS CF patients under 18 years of age with pulmonary exacerbation who received amikacin were enrolled. Patients received different amikacin regimens (30 mg-1 kg-1 day-1 every 8, 12, or 24 hours) depending on the patient's status and hospital protocols. Amikacin serum levels were obtained for therapeutic drug monitoring. PopPK model was developed using MONOLIX Suite-2018R1 (Lixoft). RESULTS A total of 39 patients (114 amikacin concentrations) were included in this study. Population estimates for the elimination rate constant (k) and the volume of distribution (V) were 0.541 hours-1 and 0.451 L/kg, respectively. Between-subject and between-occasion variability were 53% and 16.5% for k and 31% and 22% for V, respectively. Bodyweight was a significant covariate associated with V. Based on simulations, almost 70% of the patients receiving 30 mg-1 kg-1 day-1 every 24 hours would achieve a Cmax/MIC ratio >8 which is an appropriate therapeutic goal while no patient in the other two groups (Q8 and Q12) would achieve that objective. CONCLUSIONS The regimen of 30 mg-1 kg-1 day-1 every 24 hours more adequately fulfilled the therapeutic target for amikacin. Although all our patients had good clinical results and a good adverse-events profile, further studies are necessary to redefine the optimal treatment strategy.
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Affiliation(s)
- Paulo Caceres Guido
- Clinical Pharmacokinetics Unit, Hospital de Pediatria JP Garrahan, Buenos Aires, Argentina
| | - Mariel Perez
- Pharmacy Area, Hospital de Pediatria JP Garrahan, Buenos Aires, Argentina
| | - Alicia Halac
- Intermediate and Moderate Care Ward, Hospital de Pediatria JP Garrahan, Buenos Aires, Argentina
| | - Mariela Ferrari
- Intermediate and Moderate Care Ward, Hospital de Pediatria JP Garrahan, Buenos Aires, Argentina
| | - Manuel Ibarra
- Pharmaceutical Sciences, Department of Chemistry, Universidad de la Republica, Uruguay, Uruguay
| | - Nieves Licciardone
- Laboratory Service, Hospital de Pediatria JP Garrahan, Buenos Aires, Argentina
| | - Claudio Castaños
- Department of Pulmonology, Hospital de Pediatria JP Garrahan, Buenos Aires, Argentina
| | - Luis P Gravina
- Molecular Biology - Genetics, Hospital de Pediatria JP Garrahan, Buenos Aires, Argentina
| | - Cristina Jimenez
- Intermediate and Moderate Care Ward, Hospital de Pediatria JP Garrahan, Buenos Aires, Argentina
| | - Facundo Garcia Bournissen
- Multidisciplinary Institute for Pediatric Pathology Research (IMIPP), Hospital General de Niños R, Gutierrez, Argentina
| | - Paula Schaiquevich
- Clinical Pharmacokinetics Unit, Hospital de Pediatria JP Garrahan, Buenos Aires, Argentina.,National Scientific and Technical Research Council (CONICET), Buenos Aires, Argentina
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Stephens K, Orlick M, Beattie S, Snell A, Munsterman K, Oladitan L, Abdel-Rahman S. Examining Mid-Upper Arm Circumference Malnutrition z-Score Thresholds. Nutr Clin Pract 2019; 35:344-352. [PMID: 31175704 DOI: 10.1002/ncp.10324] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Anthropometric z-scores used commonly for diagnosis and determining degree of malnutrition, specifically body mass index (BMIz), weight-for-length (WLz), and mid-upper arm circumference (MUACz), are not wholly concordant, yet the proposed thresholds for classification are identical. This study was designed to critically examine MUACz thresholds and their ability to correctly classify nutrition status. METHODS This was a 2-year, prospective single-center study of children ≤18 years seen by registered dietitians within a large pediatric institution. The sensitivity, specificity, and predictive performance of the malnutrition classification thresholds were estimated against clinician-based classification. RESULTS Sixty-one dietitians enrolled 10,401 patients with distributions of z-scores for weight (-0.5 ± 1.9), length (-0.8 ± 1.6), BMI or WL (-0.1 ± 1.8), and MUAC (-0.4 ± 1.5), suggesting participants were smaller and shorter than the reference U.S. POPULATION Distributions of MUACz were broad and overlapped between nutrition classification groups, an observation that extended to BMIz and WLz as well. Consequently, existing thresholds do not accurately classify 100% of children. Misclassification rates increase, with increasing severity ranging from 8% in children with no malnutrition to 71% in children with severe malnutrition. Algorithm- and manually-based refinement of thresholds result in mixed improvements and can be explored by the reader with the associated supplement. CONCLUSION The sensitivity of proposed MUACz thresholds systematically decreases with increasing severity of malnutrition and will require optimization if we aim to limit the number of children at risk of misclassification. Indicators for overnutrition remain to be addressed but are explored herein.
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Affiliation(s)
- Karen Stephens
- Nutrition Services, Children's Mercy Hospital, Kansas City, Missouri, USA
| | - Meike Orlick
- Children's Mercy Hospital, Kansas City, Missouri, USA
| | | | - Audrey Snell
- Children's Mercy Hospital, Kansas City, Missouri, USA
| | | | - Leah Oladitan
- Children's Mercy Hospital, Kansas City, Missouri, USA
| | - Susan Abdel-Rahman
- UMKC School of Medicine, Kansas City, Missouri, USA.,Innovation in Health Care Delivery, Children's Research Institute, Kansas City, Missouri, USA.,Section of Therapeutic Innovation, Children's Mercy Hospital, Kansas City, Missouri, USA
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3
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Abstract
Malnutrition occurs when nutrient intake does not meet the needs for normal body functions and as a consequence leads to alterations of growth and development in children. Chronic illness puts children at risk for developing malnutrition. Because of children's rapid periods of growth and development, early diagnosis, prevention, and management of malnutrition are paramount. The reasons for malnutrition in children with chronic disease are multifactorial and are related to the underlying disease and non-illness-associated factors. This review addresses the causes, evaluation, and management of malnutrition in pediatric congenital heart disease, chronic kidney disease, liver disease, and cystic fibrosis.
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Affiliation(s)
- Catherine Larson-Nath
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, University of Minnesota, Minneapolis, Minnesota, USA
| | - Praveen Goday
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Medical College of Wisconsin, Milwaukee, Wisconsin, USA
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Calella P, Valerio G, Brodlie M, Taylor J, Donini LM, Siervo M. Tools and Methods Used for the Assessment of Body Composition in Patients With Cystic Fibrosis: A Systematic Review. Nutr Clin Pract 2019; 34:701-714. [DOI: 10.1002/ncp.10247] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Affiliation(s)
- Patrizia Calella
- Department of Movement Sciences and Wellbeing; Parthenope University; Naples Italy
- Human Nutrition Research Centre; Institute of Cellular Medicine; Newcastle University; Newcastle on Tyne UK
| | - Giuliana Valerio
- Department of Movement Sciences and Wellbeing; Parthenope University; Naples Italy
| | - Malcolm Brodlie
- Institute of Cellular Medicine; Newcastle University and Great North Children's Hospital; Newcastle upon Tyne UK
| | - Jake Taylor
- Institute of Cellular Medicine; Newcastle University and Great North Children's Hospital; Newcastle upon Tyne UK
| | - Lorenzo Maria Donini
- Department of Experimental Medicine-Medical Pathophysiology; Food Science and Endocrinology Section; Food Science and Human Research Unit; Sapienza University of Rome; Rome Italy
| | - Mario Siervo
- Human Nutrition Research Centre; Institute of Cellular Medicine; Newcastle University; Newcastle on Tyne UK
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5
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Rozga M, Handu D. Nutrition Care for Patients with Cystic Fibrosis: An Evidence Analysis Center Scoping Review. J Acad Nutr Diet 2019; 119:137-151.e1. [DOI: 10.1016/j.jand.2018.03.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Accepted: 03/15/2018] [Indexed: 01/13/2023]
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6
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Calella P, Valerio G, Brodlie M, Donini LM, Siervo M. Cystic fibrosis, body composition, and health outcomes: a systematic review. Nutrition 2018; 55-56:131-139. [DOI: 10.1016/j.nut.2018.03.052] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 02/26/2018] [Accepted: 03/22/2018] [Indexed: 12/15/2022]
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7
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Charatsi A, Dusser P, Freund R, Maruani G, Rossin H, Boulier A, Le Bourgeois M, Chedevergne F, de Blic J, Letourneur A, Casimir G, Jais J, Sermet-Gaudelus I. Bioelectrical impedance in young patients with cystic fibrosis: Validation of a specific equation and clinical relevance. J Cyst Fibros 2016; 15:825-833. [DOI: 10.1016/j.jcf.2016.05.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2015] [Revised: 04/28/2016] [Accepted: 05/07/2016] [Indexed: 01/10/2023]
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Alicandro G, Battezzati A, Bianchi ML, Loi S, Speziali C, Bisogno A, Colombo C. Estimating body composition from skinfold thicknesses and bioelectrical impedance analysis in cystic fibrosis patients. J Cyst Fibros 2015; 14:784-91. [DOI: 10.1016/j.jcf.2015.07.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 07/29/2015] [Accepted: 07/29/2015] [Indexed: 01/10/2023]
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Ross LJ, Capra S, Baguley B, Sinclair K, Munro K, Lewindon P, Lavin M. Nutritional status of patients with ataxia-telangiectasia: A case for early and ongoing nutrition support and intervention. J Paediatr Child Health 2015; 51:802-7. [PMID: 25656498 DOI: 10.1111/jpc.12828] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 12/06/2014] [Indexed: 11/29/2022]
Abstract
AIM Ataxia-telangiectasia (A-T) is a rare genomic syndrome resulting in severe disability. Chronic childhood disorders can profoundly influence growth and development. Nutrition-related issues in A-T are not well described, and there are no nutritional guidelines. This study investigated the nutrition-related characteristics and behaviours of Australian A-T patients attending a national clinic. METHODS A cross-sectional analysis of 13 A-T patients (nine females; aged: 4-23 years): nutritional status was assessed by anthropometric and body cell mass (BCM) calculations. Parents reported their child's diet history and physical and behavioural factors that affect nutrition including fatigue and need for assistance. RESULTS Ten (77%) had short stature (height for age z scores <-1), and seven (54%) were underweight for height (weight/height z scores <-1). Significant malnutrition (BCM z scores <-2) was detected in nine (69%) including the one adult who was severely malnourished. Malnutrition increased significantly with age (BCM for height z scores and age, r = -0.937, P < 0.001). Eight (62%) patients ate poorly compared with estimated energy requirement for weight. Poor diet quality was characterised by high fat and sugar choices. Parents reported significant nutritional barriers as chronic tiredness and the need for care giver assistance with meals. CONCLUSIONS This study confirms profound malnutrition in Australian A-T patients. Poor intakes and diet quality suggest the need for early nutrition intervention. Ongoing support for families and early discussions on tube feeding are required to address changing needs in childhood and likely nutritional decline into adulthood. A prospective study is required to assess feasibility and effectiveness of nutrition interventions in young people with A-T.
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Affiliation(s)
- Lynda J Ross
- Department of Nutrition and Dietetics, The Royal Brisbane & Women's Hospital, Brisbane, Queensland, Australia
| | - Sandra Capra
- School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Brenton Baguley
- School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, Queensland, Australia
| | - Kate Sinclair
- Department of Neurology, The Royal Children's Hospital Brisbane, Brisbane, Queensland, Australia
| | - Kate Munro
- Department of Neurology, The Royal Children's Hospital Brisbane, Brisbane, Queensland, Australia
| | - Peter Lewindon
- School of Human Movement and Nutrition Sciences, The University of Queensland, Brisbane, Queensland, Australia.,Department of Neurology, The Royal Children's Hospital Brisbane, Brisbane, Queensland, Australia.,Department of Gastroenterology, The Royal Children's Hospital, Brisbane, Queensland, Australia.,School of Medicine, The University of Queensland, Brisbane, Queensland, Australia.,Queensland Institute of Medical Research (QIMR), Brisbane, Queensland, Australia
| | - Martin Lavin
- The University of Queensland Centre for Clinical Research, Brisbane, Queensland, Australia
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10
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Abstract
The ideal set of variables for nutritional monitoring that may correlate with patient outcomes has not been identified. This is particularly difficult in the PICU patient because many of the standard modes of nutritional monitoring, although well described and available, are fraught with difficulties. Thus, repeated anthropometric and laboratory markers must be jointly analyzed but individually interpreted according to disease and metabolic changes, in order to modify and monitor the nutritional treatment. In addition, isotope techniques are neither clinically feasible nor compatible with the multiple measurements needed to follow progression. On the other hand, indirect alternatives exist but may have pitfalls, of which the clinician must be aware. Risks exist for both overfeeding and underfeeding of PICU patients so that an accurate monitoring of energy expenditure, using targeted indirect calorimetry, is necessary to avoid either extreme. This is very important, since the monitoring of the nutritional status of the critically ill child serves as a guide to early and effective nutritional intervention.
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Engelen MPKJ, Com G, Wolfe RR, Deutz NEP. Dietary essential amino acids are highly anabolic in pediatric patients with cystic fibrosis. J Cyst Fibros 2013; 12:445-53. [PMID: 23357545 DOI: 10.1016/j.jcf.2012.12.011] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Revised: 12/12/2012] [Accepted: 12/15/2012] [Indexed: 10/27/2022]
Abstract
BACKGROUND Current nutritional approaches have been partially successful in Cystic Fibrosis (CF). Essential amino acids mixtures with high Leucine levels (EAA) have anabolic properties in catabolic conditions, however data in CF are lacking. METHODS On two days according a randomized crossover design, 15 pediatric CF patients ingested 6.7 g EAA versus mixture of total amino acids as present in whey. Whole body protein and Arginine metabolism (as EAA lack Arginine) were assessed by stable isotope methodology. RESULTS Protein synthesis (P<0.05) but not protein breakdown was higher after EAA and 70% higher values for net anabolism (P<0.001)were found both in patients with and without nutritional failure. Arginine turnover was lower (P<0.001) and de novo Arginine synthesis tended lower (P=0.09) after EAA. Nitric oxide synthesis was not different. CONCLUSIONS CF patients are highly responsive to EAA intake independent of their nutritional status. Addition of Arginine to the EAA mixture may be warranted in CF.
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Affiliation(s)
- Mariëlle P K J Engelen
- Center for Translational Research in Aging & Longevity, Dept. of Geriatrics, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
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12
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Engelen MP, Schroder R, Van der Hoorn K, Deutz NE, Com G. Use of body mass index percentile to identify fat-free mass depletion in children with cystic fibrosis. Clin Nutr 2012; 31:927-33. [DOI: 10.1016/j.clnu.2012.04.012] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Revised: 04/20/2012] [Accepted: 04/20/2012] [Indexed: 10/28/2022]
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13
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Fat-free mass depletion in cystic fibrosis: Associated with lung disease severity but poorly detected by body mass index. Nutrition 2010; 26:753-9. [DOI: 10.1016/j.nut.2009.06.026] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2009] [Revised: 06/15/2009] [Accepted: 06/19/2009] [Indexed: 11/17/2022]
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14
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15
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Statistical limitations of percent ideal body weight as measure for nutritional failure in patients with cystic fibrosis. J Cyst Fibros 2009; 8:238-44. [DOI: 10.1016/j.jcf.2009.03.004] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2008] [Revised: 02/08/2009] [Accepted: 03/31/2009] [Indexed: 11/22/2022]
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16
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Wells GD, Heale L, Schneiderman JE, Wilkes DL, Atenafu E, Coates AL, Ratjen F. Assessment of body composition in pediatric patients with cystic fibrosis. Pediatr Pulmonol 2008; 43:1025-32. [PMID: 18781652 DOI: 10.1002/ppul.20913] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
RATIONALE Cystic fibrosis (CF) leads to pathological changes in organs that express the cystic fibrosis transmembrane conductance regulator (CFTR), including secretory cells of the digestive tract and the pancreas. Maintaining nutritional sufficiency is challenging for CF patients and therefore accurate monitoring is important for their clinical management. PURPOSE The objectives of this study were to evaluate the effectiveness of skinfold measurements as an accurate method for determining body composition (fat mass (FM) and lean body mass (LBM)) of this population, using dual-energy X-ray absorptiometry (DEXA) as a gold standard comparison and to determine the most accurate equation for this calculation in children with CF. METHODS Fifty-five pediatric patients with CF participated in the study. FM and LBM calculated via four methods: Slaughter, Durnin, Durenberg (2-site and 4-site). The relationship between the methods and DEXA results were estimated by intraclass-correlation coefficient (ICC) and Bland and Altman analyses. RESULTS The Slaughter method was the most accurate (ICC of 0.92 for FM and 0.99 for LBM) and displayed the least bias over the range of FM and LBM in CF patients. In addition, the results of Bland Altman analyses comparing each skinfold method to DEXA, revealed that the results were evenly distributed along the range of values for the Slaughter calculation, whereas the other three methods under and over estimated % fat results at the upper and lower ends of the range respectively. CONCLUSION We therefore conclude that the Slaughter method may be used for body composition assessment of pediatric CF patients. This provides clinical teams with a simple, accurate and non-invasive method that can be used to monitor nutritional status in pediatric patients with CF.
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Affiliation(s)
- Greg D Wells
- Physiology and Experimental Medicine, The Hospital for Sick Children, Toronto, Ontario, Canada.
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18
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Nydegger A, Strauss BJG, Heine RG, Asmaningsih N, Jones CL, Bines JE. Body composition of children with chronic and end-stage renal failure. J Paediatr Child Health 2007; 43:740-5. [PMID: 17640285 DOI: 10.1111/j.1440-1754.2007.01167.x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIM Protein energy malnutrition is common in children with chronic renal failure (CRF) and may negatively impact on clinical outcome. Although the aetiology of malnutrition is multifactorial, descriptive information on body composition may guide nutritional interventions aimed at optimising nutritional status. METHODS This prospective cohort study in children with CRF was conducted from April 1999 to November 2000. Patients were categorised according to their glomerular filtration rate (GFR) into CRF and end-stage renal failure (ESRF). Body composition was assessed based on anthropometry, total body potassium (TBK), total body protein (TBP) and dual X-ray absorptiometry (DEXA). RESULTS Fifteen patients (10 male, 5 female; mean age: 13.4 +/- 4.3 years) were studied, including eight patients with CRF (mean GFR: 17.0 +/- 7.2 mL/min/1.73 m(2)) and seven patients with ESRF (mean GFR: 6.4 +/- 1.7 mL/min/1.73 m(2)). Patients in both groups (n = 15) had deficits in height and TBP (mean z-score height-for-age: -1.19 +/- 1.05, P < 0.01; mean z-score TBP: -0.71 +/- 0.71, P < 0.05). There were no significant differences in weight, height, fat-free mass, TBK and TBP between patients with CRF and ESRF. CONCLUSIONS Linear growth impairment and decreased TBP are common in children with chronic and ESRF. TBK and DEXA may underestimate the degree of malnutrition in these patients.
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Affiliation(s)
- Andreas Nydegger
- Department of Gastroenterology, Royal Children's Hospital, Parkville, Victoria, Australia
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Murphy AJ, Buntain HM, Wainwright CE, Davies PSW. The nutritional status of children with cystic fibrosis. Br J Nutr 2007; 95:321-4. [PMID: 16469148 DOI: 10.1079/bjn20051611] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The importance of nutritional intervention for children with cystic fibrosis (CF) is well recognised. It would be expected that the increase in knowledge over the past decade would be reflected in improvements in nutritional status for the CF paediatric population. The aim of the present paper was to evaluate the nutritional status of children with CF, cross-sectionally and longitudinally. Body cell mass adjusted for gender and size (BCM/Htp) was measured in sixty-four children with CF to represent nutritional status and expressed as a Z-score. The cross-sectional results showed a mean BCM/Htp Z-score of 0·54 (sd 1·21), with males having a slightly higher Z-score than females but with a larger variation. At the initial measurement, only one female and one male were considered sub-optimally nourished. The longitudinal analysis after 2 years showed that the mean population had a significantly decreased BCM/Htp Z-score; however, when each gender was analysed separately, this decrease was significant only in the males. At the final measurement, only two females and three males were considered sub-optimally nourished. It is evident from our results that children with CF are well nourished, with only a small percentage considered malnourished. It appears that nutritional status decreases with age, with this decline being more evident in males. These results signify that although children with CF are better nourished with current treatment support, intervention needs to continue throughout a CF patient's life to counteract the changes that occur with age.
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Affiliation(s)
- Alexia J Murphy
- Department of Respiratory Medicine, Royal Children's Hospital, Brisbane, Australia.
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Wiedemann B, Paul KD, Stern M, Wagner TO, Hirche TO. Evaluation of body mass index percentiles for assessment of malnutrition in children with cystic fibrosis. Eur J Clin Nutr 2007; 61:759-68. [PMID: 17213872 DOI: 10.1038/sj.ejcn.1602582] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To compare the performance of recently released body mass index percentiles (BMIp) with standard anthropometric indexes, including height-for-age percentile (HAP), weight-for-age percentile (WAP) and percent ideal body weight (%IBW), as measures for nutritional failure in children with cystic fibrosis (CF). DESIGN Cross-sectional analysis of growth and lung function data from 4577 children with CF reported to the German CF quality assurance (CFQA) project from 1995 to 2004. RESULTS Frequency distribution of HAP (mean+/-s.d.: male 30.0+/-27.5; female 31.3+/-27.4) and WAP (male 28.9+/-27.0; female 29.6+/-26.7) were skewed, with significant numbers of patients below the fifth percentiles of a healthy reference population. However, because deficits occurred in both measures simultaneously, mean %IBW (male 97.0+/-12.1; female 98.1+/-12.3) assumed subjects weight close to the nominal weight-for-height at all ages. In contrast, mean BMIp was markedly reduced (male 35.7+/-27.9; female 35.6+/-27.2) and steadily declined with age. Ideal weight-for-age was significantly lower when predicted by %IBW compared with BMIp method, particularly in subjects with shorter-than-average stature. Consequently, less CF children were identified with nutritional failure according to %IBW method (male 20.5%; female 22.7%) compared with BMIp method (male 30.4%; female 28.7%). The clinical relevance of these findings was confirmed by stronger correlation of BMIp with impaired %forced expiratory volume/s, a marker for disease progression in CF. CONCLUSION BMIp predicts nutritional failure more sensitively and accurately than conventional anthropometric indexes, at least in children with CF. Screening of CF patients by BMIp could provide an early warning sign and allow for timely therapeutic intervention.
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Affiliation(s)
- B Wiedemann
- Department of Medical Informatics and Biometrics, Technical University Dresden, Dresden, Germany
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Boguszewski MCS, Kamoi TO, Bento Radominski R, Boguszewski CL, Rosberg S, Filho NAR, Sandrini Neto R, Albertsson-Wikland K. Insulin-like growth factor-1, leptin, body composition, and clinical status interactions in children with cystic fibrosis. HORMONE RESEARCH 2007; 67:250-6. [PMID: 17215581 DOI: 10.1159/000098480] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2006] [Accepted: 11/17/2006] [Indexed: 11/19/2022]
Abstract
BACKGROUND/AIMS Children with cystic fibrosis (CF) are of increased risk of reduced fat body mass (FBM) and lean body mass (LBM). Serum concentrations of insulin-like growth factor-1 (IGF-1)and leptin could be markers of LBM and/or FBM depletion. To evaluate the relationships between disease activity, body composition, IGF-1 and leptin concentrations in CF children. METHODS A cross-sectional study with 26 CF children aged 5.0-15.5 years and 33 healthy controls, mean age 9.4 years. Body composition was evaluated by dual-energy X-ray absorptiometry. Fasting blood samples were analyzed for leptin, IGF-1 and IGFBP-3. RESULTS FBM standard deviation score (SDS; CF boys -0.02 +/- 0.88 vs. 0.78 +/- 0.65, p < 0.01; CF girls -0.37 +/- 1.15 vs. 0.70 +/- 0.97, p < 0.05), leptin concentration (CF boys 2.07 +/- 0.79 vs. 3.07 +/- 1.28 ng/ml, p < 0.05; CF girls 2.71 +/- 0.86 vs. 5.00 +/- 2.95 ng/ml, p < 0.05) and IGF-1SDS (CF boys -1.43 +/- 1.50 vs. -0.32 +/- 0.88, p < 0.05; CF girls -0.66 +/- 1.66 vs. 0.64 +/- 0.57, p < 0.01) were lower in CF children compared to controls. Shwachman score was the strongest predictor of lean body mass (R = 0.63). Leptin levels explain 60% of the variability in FBM. CONCLUSION Serum concentrations of IGF-1 and leptin are decreased in children with CF and are associated with clinical conditions and body composition.
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Affiliation(s)
- Margaret C S Boguszewski
- Pediatric Endocrinology Unit, Department of Pediatrics, Hospital de Clínicas, Federal University of Paraná, Curitiba, Brazil.
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King S, Wilson J, Kotsimbos T, Bailey M, Nyulasi I. Body composition assessment in adults with cystic fibrosis: comparison of dual-energy X-ray absorptiometry with skinfolds and bioelectrical impedance analysis. Nutrition 2005; 21:1087-94. [PMID: 16183254 DOI: 10.1016/j.nut.2005.04.005] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2004] [Accepted: 04/04/2005] [Indexed: 12/25/2022]
Abstract
OBJECTIVE We compared body composition measurement in adults with cystic fibrosis (CF) by using non-invasive methods (skinfold thicknesses and bioelectrical impedance analysis [BIA]) with dual-energy X-ray absorptiometry (DXA). METHODS Seventy-six adults with CF (mean age 29.9 +/- 7.9 y, mean body mass index 21.5 +/- 2.5 kg/m(2)) were studied. Body composition was measured to calculate fat-free mass (FFM) using DXA, the sum of four skinfold thicknesses, and BIA (predictive equations of Lukaski and of Segal). RESULTS Mean FFM values +/- standard deviation measured using DXA were 54.8 +/- 7.3 kg in men and 41.2 +/- 3.9 kg in women. Mean FFM values measured using BIA/Lukaski were 51.5 +/- 7.8 kg in men and 40.4 +/- 4.9 kg in women (P < 0.0005 for men, not significant for women for comparison with DXA). Mean FFM values measured using BIA/Segal were 54.2 +/- 7.5 kg for men and 44.1 +/- 5.9 kg for women (not significant for men, P < 0.0005 for women for comparison with DXA). Mean FFM values measured using skinfolds were significantly higher than those for FFM with DXA (57.2 +/- 7.2 kg in men, 43.3 +/- 4.3 kg in women, P < 0.0005 for comparison with DXA). The 95% limits of agreement with FFM using DXA were, for men and women, respectively, -8.3 to 1.7 kg and -6.4 to 4.8 kg for BIA/Lukaski, -4.8 to 3.6 kg and -3.1 to 8.9 kg for BIA/Segal, and -2.8 to 7.3 kg and -1.5 to 5.7 kg for skinfolds. CONCLUSION This study suggests that skinfold thickness measurements and BIA will incorrectly estimate FFM in many adults with CF compared with DXA measurements of FFM. These methods have limited application in the assessment of body composition in individual adult patients with CF.
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Affiliation(s)
- Susannah King
- Department of Medicine, Monash University, Alfred Hospital, Melbourne, Victoria, Australia.
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Groeneweg M, Tan S, Boot AM, de Jongste JC, Bouquet J, Sinaasappel M. Assessment of nutritional status in children with cystic fibrosis: conventional anthropometry and bioelectrical impedance analysis. A cross-sectional study in Dutch patients. J Cyst Fibros 2004; 1:276-80. [PMID: 15463827 DOI: 10.1016/s1569-1993(02)00099-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND Assessment of nutritional status in children with cystic fibrosis (CF) is clinically relevant. Methods to measure nutritional status should be reliable and non-invasive, and reference values should be available. AIM To compare weight and height measurements and measurements of specific body compartments in children with CF. METHODS In a cross-sectional survey of 58 children with CF (28 females), we compared height and weight (expressed as: weight-for-height, body mass index (BMI), height-for-age and weight-for-age) with fat mass (skinfold sum (SFS)), muscle mass (upper arm circumference (UAC)) and bioelectrical impedance analysis (BIA). Results were expressed as Z-scores, using Dutch reference values. RESULTS BMI and weight-for-height were within the normal range (mean Z-score (range): -0.13 (-1.5, 2.7) and -0.02 (-1.7, 2.8)). Weight and height corrected for age were below normal (mean Z-score (range): -0.79 (-2.4, -0.05) and -1.2 (-2.8, 1.4) (P<0.01)). Lean body mass by skinfold sum (LBM(sfs)), UAC and BIA were also significantly below reference values (mean Z-score (range): -0.9 (-2.2, 1.8), -0.95 (-2.4, 1.8) and -1.1 (-3.6, 1.0) (P<0.01)). Lean body mass (LBM) by BIA correlated with LBM(sfs). BIA systematically underestimated LBM in both CF patients and in control subjects. CONCLUSION Nutritional status of children with CF must be evaluated, using age-corrected weight and height expressed in Z-score. LBM estimated by SFS, UAC and by BIA appear to be useful, although longitudinal studies in CF children should be performed to evaluate their clinical significance in detecting changes in nutritional status.
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Affiliation(s)
- Michael Groeneweg
- Department of Pediatrics, Section of Gastroenterology, Erasmus Medical Centre Rotterdam, Sophia Children's Hospital, Rotterdam, The Netherlands.
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Marín VB, Velandia S, Hunter B, Gattas V, Fielbaum O, Herrera O, Díaz E. Energy expenditure, nutrition status, and body composition in children with cystic fibrosis. Nutrition 2004; 20:181-6. [PMID: 14962683 DOI: 10.1016/j.nut.2003.10.010] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Undernutrition is a frequent complication in patients with cystic fibrosis (CF). Elevated energy requirements have been found to be 4% to 33% higher than in controls in some studies. Whether or not this is caused by a primary defect or energy metabolism is still a matter of controversy. To this end, we assessed energy expenditure, nutrition status, and body composition of clinically stable CF outpatients. METHODS Fifteen clinically stable CF patients, ages 2 to 15 y, were paired with 15 healthy control children. Measurements consisted of anthropometry and body composition. Plasma tocopherol, retinol, and hair zinc content were measured. Resting energy expenditure was determined by indirect calorimetry. Physical activity and dietary intake were recorded by recall methods. RESULTS Two children were nutritionally at risk according to the weight/height index, eight were normal, three were overweight, and two were obese. Body composition was similar in both groups. Zinc, tocopherol, and retinol levels were low in three, two, and three patients, respectively. Resting energy expenditures were 4.7 MJ/d (1127 +/- 220 kcal/d) in CF children and 4.63 MJ/d (1108 +/- 191 kcal/d) in control children (P = not significant). Physical activity level was sedentary in 86.6% of CF patients; the rest had a light physical activity pattern. Energy intake represented 141% of the estimated daily energy expenditure. CONCLUSIONS Non-oxygen-dependent CF children, without acute respiratory infection, had resting energy expenditures comparable to those of matched controls. Total energy expenditure was similar to or slightly lower than that in healthy children. Dietary recommendations for CF patients need to be reassessed.
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Affiliation(s)
- Verónica B Marín
- Institute of Nutrition and Food Technology, University of Chile, Macul 5540, Santiago, Chile
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Laurans M. [Question 2. What strategies for maintaining optimal nutritional state in patients with cystic fibrosis? When and how to evaluate nutritional state at the means of therapeutic interventions?]. Arch Pediatr 2003; 10 Suppl 3:440s-448s. [PMID: 14671957 DOI: 10.1016/s0929-693x(03)90008-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- M Laurans
- Service de pédiatrie, CHU, avenue de la Côte-de-Nacre, 14033 Caen, France
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Mouterde O. Question 1 Quelle influence de l'état nutritionnel sur l'evolution de la mucoviscidose? Influence de 1' état nutritionnel sur 1' evolution de la mucoviscidose: aspects cliniques et epidemiologiques. Arch Pediatr 2003; 10 Suppl 3:421s-430s. [PMID: 14671954 DOI: 10.1016/s0929-693x(03)90005-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- O Mouterde
- Faculté de médecine de Sherbrooke, 3001, 12e avenue nord, Fleurimont, Québec, J1H5N4, Canada
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Tounian P. Question 2 Quelle stratégie pour maintenir un état nutritionnel optimal? Comment et quand evaluer 1' état nutritionnel des enfants atteints de mucoviscidose? Arch Pediatr 2003; 10 Suppl 3:431s-436s. [PMID: 14671955 DOI: 10.1016/s0929-693x(03)90006-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Affiliation(s)
- P Tounian
- Service de gastroentérologie et nutrition pédiatriques, hôpital d'Enfants Armand-Trousseau, AP-HP, 26, avenue du Dr Arnold-Netter, 75012 Paris, France
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Greer R, Lehnert M, Lewindon P, Cleghorn GJ, Shepherd RW. Body composition and components of energy expenditure in children with end-stage liver disease. J Pediatr Gastroenterol Nutr 2003; 36:358-63. [PMID: 12604974 DOI: 10.1097/00005176-200303000-00010] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
BACKGROUND Better understanding of body composition and energy metabolism in pediatric liver disease may provide a scientific basis for improved medical therapy aimed at achieving optimal nutrition, slowing progression to end-stage liver disease (ESLD), and improving the outcome of liver transplantation. METHODS Twenty-one children less than 2 years of age with ESLD awaiting liver transplantation and 15 healthy, aged-matched controls had body compartment analysis using a four compartment model (body cell mass, fat mass, extracellular water, and extracellular solids). Subjects also had measurements of resting energy expenditure (REE) and respiratory quotient (RQ) by indirect calorimetry. Nine patients and 15 control subjects also had measurements of total energy expenditure (TEE) using doubly labelled water. RESULTS Mean weights and heights were similar in the two groups. Compared with control subjects, children with ESLD had higher relative mean body cell mass (33 +/- 2% vs 29 +/- 1% of body weight, P < 0.05), but had similar fat mass, extracellular water, and extracellular solid compartments (18% vs 20%, 41% vs 38%, and 7% vs 13% of body weight respectively). Compared with control subjects, children with ESLD had 27% higher mean REE/body weight (0.285 +/- 0.013 vs 0.218. +/- 0.013 mJ/kg/24h, P < 0.001), 16% higher REE/unit cell mass (P < 0.05); and lower mean RQ (P < 0.05). Mean TEE of patients was 4.70 +/- 0.49 mJ/24h vs 3.19 +/- 0.76 in controls, (P < 0.01). CONCLUSIONS In children, ESLD is a hypermetabolic state adversely affecting the relationship between metabolic and nonmetabolic body compartments. There is increased metabolic activity within the body cell mass with excess lipid oxidation during fasting and at rest. These findings have implications for the design of appropriate nutritional therapy.
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Affiliation(s)
- Ristan Greer
- Children's Nutrition Research Centre, Department of Paediatrics and Child Health University of Queensland, Brisbane, Australia
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Hütler M, Schnabel D, Staab D, Tacke A, Wahn U, Böning D, Beneke R. Effect of growth hormone on exercise tolerance in children with cystic fibrosis. Med Sci Sports Exerc 2002; 34:567-72. [PMID: 11932561 DOI: 10.1097/00005768-200204000-00001] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE The effect of growth hormone (GH) treatment on exercise tolerance in children with cystic fibrosis was investigated. METHODS 10 prepubertal children (mean +/- SD; age: 12.1 +/- 1.7 yr; height: 137.4 +/- 9.2 cm; body mass: 27.8 +/- 4.2 kg; forced expiratory volume in 1 s (FEV1): 68 +/- 22% predicted) were randomly assigned to either control period (CON, standard therapy) or recombinant human growth hormone (GH) period (additional GH treatment, 0.11-0.14 IU.kg-1, daily, s.c.) for the first 6 months, and then assigned to the other period for the next 6 months. At study entry and after each period, anthropometric data, pulmonary function, and exercise capacity (peak exercise capacity, .VO(2peak), and isokinetic muscle strength) were measured. RESULTS Changes in height (+4.3 +/- 1.0 cm), total body mass (+2.2 +/- 0.8 kg), and lean body mass (LBM, +2.9 +/- 0.7 kg) were significantly higher (P < 0.01) after GH treatment compared with CON. Pulmonary function did not significantly change in either of the periods. In contrast to CON, GH treatment improved absolute .VO(2peak) (+19%, P < 0.01), peak ventilation (+14%, P < 0.01), and peak oxygen pulse (+18%, P < 0.01). Analysis of variance revealed that most of the changes (71%) in .VO(2peak) could be explained by those in LBM and FEV1 (P = 0.001). CONCLUSION GH treatment clearly improved exercise tolerance, presumably resulting from the combined effects of GH on the muscular, cardiovascular, and pulmonary capacity.
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Affiliation(s)
- Matthias Hütler
- Sports Medicine, Free University Berlin, Clayallee 225C, 14195 Berlin, Germany.
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HÜTLER MATTHIAS, SCHNABEL DIRK, STAAB DORIS, TACKE ALBRECHT, WAHN ULRICH, BÖNING DIETER, BENEKE RALPH. Effect of growth hormone on exercise tolerance in children with cystic fibrosis. Med Sci Sports Exerc 2002. [DOI: 10.1249/00005768-200204000-00001] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Beker LT, Russek-Cohen E, Fink RJ. Stature as a prognostic factor in cystic fibrosis survival. JOURNAL OF THE AMERICAN DIETETIC ASSOCIATION 2001; 101:438-42. [PMID: 11320950 DOI: 10.1016/s0002-8223(01)00113-4] [Citation(s) in RCA: 122] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE/DESIGN This study provides a longitudinal analysis of the National Cystic Fibrosis Patient Registry to determine if height-for-age percentile would be a useful predictor of survival. SUBJECTS All patients were selected from the national registry (n = 19,000) maintained by the Cystic Fibrosis Foundation's 115 accredited Cystic Fibrosis Care Centers in the United States. Inclusion in our analysis required that subjects were born between 1980 and 1989; had a minimum of 4 records each; the subject was alive at age 7; and the subject had a recorded height measurement at age 7 to 8 (n = 2,773). STATISTICAL ANALYSIS The Cox proportional hazards model was used to compare height-for-age with survival. We recorded whether a subject was less than the 5th National Center for Health Statistics (NCHS) percentile at age 5 and then in a separate analysis at age 7. Cohort effect was coded as "1" if they were born before 1982 and "0" otherwise. RESULTS Stature is a significant prognostic indicator of survival. The relative hazard associated with height below the 5th NCHS percentile for age was significant for both males and females. In males at age 5 the relative hazard was 2.9, [95% confidence interval (CI) 1.23, 6.91; P < .02] and at age 7 it was 6.3 (95% CI 2.1, 18.8; P < .001). The relative hazard in females at age 5 was 4.3 (95% CI 2.4, 7.3; P < .0001) and at age 7 was 5.8 (95% CI 2.5, 13.1; P < .0001). APPLICATION These highly significant relative hazard values strongly suggest that shorter patients are much more likely to die before taller patients. The dietetic professional should consider using height-for-age as an effective screening tool to identify patients at risk. Based on these data, short stature should not be considered benign to patients with cystic fibrosis. The CF team, clinicians, family, and patients need work together to maximize linear growth through medical and nutritional intervention.
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Affiliation(s)
- L T Beker
- Pediatric Clinical Research Center, Children's Research Institute, Washington, DC, USA
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