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Burgess-Shannon J, Chehrazi M, Lanoue J, Modi N, Uthaya SN. Outcomes following the adoption of standard parenteral nutrition in preterm infants: a whole-population non-concurrent control study. Arch Dis Child Fetal Neonatal Ed 2024:fetalneonatal-2023-325712. [PMID: 38442954 DOI: 10.1136/archdischild-2023-325712] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 02/22/2024] [Indexed: 03/07/2024]
Abstract
OBJECTIVE To evaluate the impact of a quality improvement project of the adoption of standard parenteral nutrition (SPN) in preterm infants. DESIGN Retrospective, multicentre, whole-population, non-concurrent control study using data from the UK National Neonatal Research Database between 1 January 2014 and 31 December 2020. SETTING Neonatal units in London UK organised by geographical network. PATIENTS Preterm infants <31 weeks' gestation. INTERVENTIONS Introduction of two SPN formulations previously tested in randomised controlled trials (NEON and SCAMP). SCAMP delivers a higher target macronutrient intake. MAIN OUTCOME MEASURES The primary outcome was survival to discharge from neonatal care without major morbidities. Secondary outcomes included the individual components of the primary outcome and a comparison of outcomes between the NEON and the SCAMP formulations. RESULTS Of 6538 eligible infants, 4693 were admitted to neonatal care before and 1845 after the adoption of SPN. Morbidity-free survival decreased by an average of 8.6% (95% CI 5.8% to 11.4%, p<0.0001) following adoption. The effect varied by type of formulation; the cohort that adopted NEON showed no difference in morbidity-free survival, whereas the cohort that adopted SCAMP showed a statistically significant decrease in morbidity-free survival. Overall survival decreased by an average of 2.0% (95% CI 0.01% to 4.0%, p=0.048). CONCLUSIONS Research is urgently needed to identify the optimal composition of parenteral nutrition for preterm babies. This study also adds to the growing body of evidence that suggests that early and high intakes of macronutrients in preterm babies may be harmful.
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Affiliation(s)
| | - Mohammad Chehrazi
- Section of Neonatal Medicine, School of Public Health, Faculty of Medicine, Imperial College London, London, UK
| | - Julia Lanoue
- Section of Neonatal Medicine, School of Public Health, Faculty of Medicine, Imperial College London, London, UK
| | - Neena Modi
- Chelsea and Westminster Hospital NHS Foundation Trust, London, UK
- Section of Neonatal Medicine, School of Public Health, Faculty of Medicine, Imperial College London, London, UK
| | - Sabita N Uthaya
- Chelsea and Westminster Hospital NHS Foundation Trust, London, UK
- Section of Neonatal Medicine, School of Public Health, Faculty of Medicine, Imperial College London, London, UK
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2
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Morgan C, Parry S, Park J, Tan M. Neurodevelopmental Outcome in Very Preterm Infants Randomised to Receive Two Different Standardised, Concentrated Parenteral Nutrition Regimens. Nutrients 2023; 15:4741. [PMID: 38004135 PMCID: PMC10674254 DOI: 10.3390/nu15224741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 11/04/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
We have previously shown that increasing parenteral protein (target: 3.8 versus 2.8 g/kg/d) and energy (12% versus 10% glucose; 3.8 versus 2.8 g/kg/d) intake using a Standardised, Concentrated with Added Macronutrients Parenteral (SCAMP) nutrition regimen ameliorates early head growth failure in very-preterm infants (VPIs). We hypothesised that the SCAMP nutrition regimen would also improve neurodevelopmental outcome. The original double-blind randomised, controlled study (ISRCTN: 76597892) received ethical approval. VPIs were randomised to either start SCAMP or remain on the control regimen. The consent process included neurodevelopmental assessments (Bayley III), all of which were performed (blinded) at 2-3.5 years of corrected gestational age. Bayley III assessments were performed for 38/60 SCAMP survivors and 41/63 control survivors at means of (sd) 29.2 (3.7) and 20.0 (3.9) months, respectively. Motor, cognitive, language, and combined scores were all higher in the SCAMP intervention group, but none of the differences were statistically significant. Nutrient intake and biochemical monitoring data confirmed that protein/energy ratios were maintained in the SCAMP intervention group without increasing the incidence of hyperglycaemia, insulin treatment, or the derangement of plasma mineral/electrolyte levels. This study did not show a statistically significant improvement in neurodevelopmental outcome when administering higher parenteral protein/energy intakes despite optimal energy and mineral intakes.
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Affiliation(s)
- Colin Morgan
- Liverpool Women’s Hospital, Liverpool L8 7SS, UK
| | - Samantha Parry
- Liverpool Women’s Hospital, Liverpool L8 7SS, UK
- Alder Hey Children’s Hospital, Liverpool L14 5AB, UK
| | - Julie Park
- Alder Hey Children’s Hospital, Liverpool L14 5AB, UK
| | - Maw Tan
- Alder Hey Children’s Hospital, Liverpool L14 5AB, UK
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3
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Boscarino G, Carducci C, Conti MG, Podagrosi M, Gigliello A, Di Chiara M, Bartolucci M, Brunelli R, Parisi P, Angeloni A, Terrin G. Early Energy Intake and Amino Acid Profile in Preterm Newborns: A Quasi-Experimental Study. Nutrients 2023; 15:2917. [PMID: 37447243 PMCID: PMC10343583 DOI: 10.3390/nu15132917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/23/2023] [Accepted: 06/26/2023] [Indexed: 07/15/2023] Open
Abstract
(1) Background: An increased protein intake via parenteral nutrition (PN) in early life is associated with an improvement of the nitrogen balance in preterm newborns. However, the role of energy intake on amino acid (AA) utilization provided by PN remains to be defined. We investigated the effects of energy intake on blood AA levels and profiles. (2) Methods: Quasi-experimental study including preterm very low birth weight newborns who received an energy enhanced PN (Cohort A) or an energy standard PN (Cohort B), with a similar protein amount in the first week of life. Blood AA levels were measured between three and seven days of life (T0) and at fifteen days of life (T1) and compared between the two study cohorts. (3) Results: AA levels of 40 newborns from each group were analyzed. No difference was found for total essential and non-essential blood AA concentration at T0 between the two study cohorts. At T1, we found a significantly higher blood concentration of leucine, isoleucine and proline, and a significantly lower concentration of tyrosine in Cohort B. However, multivariate analysis did not confirm this result. (4) Conclusions: An enhanced PN protocol in terms of energy but not of protein did not influence AA levels and profiles. Considering the high risk of side effects, we suggest exercising caution when administering high energy intake via PN in the first week of life.
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Affiliation(s)
- Giovanni Boscarino
- Department of Maternal and Child Health, Policlinico Umberto I, Sapienza University of Rome, 00161 Rome, Italy (R.B.)
| | - Claudia Carducci
- Department of Experimental Medicine, Policlinico Umberto I, Sapienza University of Rome, 00185 Rome, Italy
| | - Maria Giulia Conti
- Department of Maternal and Child Health, Policlinico Umberto I, Sapienza University of Rome, 00161 Rome, Italy (R.B.)
| | - Maria Podagrosi
- Department of Maternal and Child Health, Policlinico Umberto I, Sapienza University of Rome, 00161 Rome, Italy (R.B.)
| | - Annamaria Gigliello
- Department of Experimental Medicine, Policlinico Umberto I, Sapienza University of Rome, 00185 Rome, Italy
| | - Maria Di Chiara
- Department of Maternal and Child Health, Policlinico Umberto I, Sapienza University of Rome, 00161 Rome, Italy (R.B.)
| | - Monica Bartolucci
- Department of Maternal and Child Health, Policlinico Umberto I, Sapienza University of Rome, 00161 Rome, Italy (R.B.)
| | - Roberto Brunelli
- Department of Maternal and Child Health, Policlinico Umberto I, Sapienza University of Rome, 00161 Rome, Italy (R.B.)
| | - Pasquale Parisi
- Department of Neuroscience, Mental Health and Sense Organs (NESMOS), Faculty of Medicine and Psychology, Sant Andrea Hospital University, Sapienza University of Rome, 00189 Rome, Italy
| | - Antonio Angeloni
- Department of Experimental Medicine, Policlinico Umberto I, Sapienza University of Rome, 00185 Rome, Italy
| | - Gianluca Terrin
- Department of Maternal and Child Health, Policlinico Umberto I, Sapienza University of Rome, 00161 Rome, Italy (R.B.)
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4
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Tomlinson C, Elango R, Courtney-Martin G. Early Amino Acids in Extremely Preterm Infants and Neurodisability. N Engl J Med 2023; 388:382-383. [PMID: 36720152 DOI: 10.1056/nejmc2215551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Abstract
Prematurity and other complications at birth are nutritional emergencies. Parenteral nutrition is a bridge to enteral nutrition for a few days or months, and sometimes the sole source of nutrition for life. Parenteral nutrition regimens are constructed to provide adequate and balanced energy, macronutrients, and micronutrients to support growth and prevent deficiencies. Neonatal parenteral nutrition regimens are complicated by periodic shortages of essential products, compatibility challenges, and contaminants. Newborns benefit from serial growth assessments, monitoring of biochemical status, nutrition-focused physical examinations, and management by a multidisciplinary team to ensure adequacy of parenteral nutrition and promote best outcomes.
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Affiliation(s)
- Sharon Groh-Wargo
- Nutrition and Pediatrics, Case Western Reserve University at MetroHealth Medical Center, 2500 MetroHealth Drive, C.G72, Cleveland, OH 44109-1998, USA
| | - Stephanie Merlino Barr
- Neonatal Dietitian, Department of Pediatrics, MetroHealth Medical Center, 2500 MetroHealth Drive, C.G72, Cleveland, OH 44109-1998, USA.
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Research priorities in pediatric parenteral nutrition: a consensus and perspective from ESPGHAN/ESPEN/ESPR/CSPEN. Pediatr Res 2022; 92:61-70. [PMID: 34475525 PMCID: PMC9411056 DOI: 10.1038/s41390-021-01670-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Revised: 07/07/2021] [Accepted: 07/09/2021] [Indexed: 02/07/2023]
Abstract
Parenteral nutrition is used to treat children that cannot be fully fed by the enteral route. While the revised ESPGHAN/ESPEN/ESPR/CSPEN pediatric parenteral nutrition guidelines provide clear guidance on the use of parenteral nutrition in neonates, infants, and children based on current available evidence, they have helped to crystallize areas where research is lacking or more studies are needed in order to refine recommendations. This paper collates and discusses the research gaps identified by the authors of each section of the guidelines and considers each nutrient or group of nutrients in turn, together with aspects around delivery and organization. The 99 research priorities identified were then ranked in order of importance by clinicians and researchers working in the field using a survey methodology. The highest ranked priority was the need to understand the relationship between total energy intake, rapid catch-up growth, later metabolic function, and neurocognitive outcomes. Research into the optimal intakes of macronutrients needed in order to achieve optimal outcomes also featured prominently. Identifying research priorities in PN should enable research to be focussed on addressing key issues. Multicentre trials, better definition of exposure and outcome variables, and long-term metabolic and developmental follow-up will be key to achieving this. IMPACT: The recent ESPGHAN/ESPEN/ESPR/CSPEN guidelines for pediatric parenteral nutrition provided updated guidance for providing parenteral nutrition to infants and children, including recommendations for practice. However, in several areas there was a lack of evidence to guide practice, or research questions that remained unanswered. This paper summarizes the key priorities for research in pediatric parenteral nutrition, and ranks them in order of importance according to expert opinion.
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Nutritional Intake, White Matter Integrity, and Neurodevelopment in Extremely Preterm Born Infants. Nutrients 2021; 13:nu13103409. [PMID: 34684410 PMCID: PMC8539908 DOI: 10.3390/nu13103409] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 09/20/2021] [Accepted: 09/22/2021] [Indexed: 02/05/2023] Open
Abstract
Background: Determining optimal nutritional regimens in extremely preterm infants remains challenging. This study aimed to evaluate the effect of a new nutritional regimen and individual macronutrient intake on white matter integrity and neurodevelopmental outcome. Methods: Two retrospective cohorts of extremely preterm infants (gestational age < 28 weeks) were included. Cohort B (n = 79) received a new nutritional regimen, with more rapidly increased, higher protein intake compared to cohort A (n = 99). Individual protein, lipid, and caloric intakes were calculated for the first 28 postnatal days. Diffusion tensor imaging was performed at term-equivalent age, and cognitive and motor development were evaluated at 2 years corrected age (CA) (Bayley-III-NL) and 5.9 years chronological age (WPPSI-III-NL, MABC-2-NL). Results: Compared to cohort A, infants in cohort B had significantly higher protein intake (3.4 g/kg/day vs. 2.7 g/kg/day) and higher fractional anisotropy (FA) in several white matter tracts but lower motor scores at 2 years CA (mean (SD) 103 (12) vs. 109 (12)). Higher protein intake was associated with higher FA and lower motor scores at 2 years CA (B = −6.7, p = 0.001). However, motor scores at 2 years CA were still within the normal range and differences were not sustained at 5.9 years. There were no significant associations with lipid or caloric intake. Conclusion: In extremely preterm born infants, postnatal protein intake seems important for white matter development but does not necessarily improve long-term cognitive and motor development.
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Watson DG, Pomeroy PP, Al-Tannak NF, Kennedy MW. Stockpiling by pups and self-sacrifice by their fasting mothers observed in birth to weaning serum metabolomes of Atlantic grey seals. Sci Rep 2020; 10:7465. [PMID: 32366923 PMCID: PMC7198541 DOI: 10.1038/s41598-020-64488-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 04/15/2020] [Indexed: 12/23/2022] Open
Abstract
During the uniquely short lactations of true seals, pups acquire a greater proportion of maternal body resources, at a greater rate, than in any other group of mammals. Mothers in many species enter a period of anorexia but must preserve sufficient reserves to fuel hunting and thermoregulation for return to cold seas. Moreover, pups may undergo a period of development after weaning during which they have no maternal care or nutrition. This nutritionally closed system presents a potentially extreme case of conflict between maternal survival and adequate provisioning of offspring, likely presenting strains on their metabolisms. We examined the serum metabolomes of five mother and pup pairs of Atlantic grey seals, Halichoerus grypus, from birth to weaning. Changes with time were particularly evident in pups, with indications of strain in the fat and energy metabolisms of both. Crucially, pups accumulate certain compounds to levels that are dramatically greater than in mothers. These include compounds that pups cannot synthesise themselves, such as pyridoxine/vitamin B6, taurine, some essential amino acids, and a conditionally essential amino acid and its precursor. Fasting mothers therefore appear to mediate stockpiling of critical metabolites in their pups, potentially depleting their own reserves and prompting cessation of lactation.
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Affiliation(s)
- David G Watson
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, Scotland, UK.
| | - Patrick P Pomeroy
- Sea Mammal Research Unit, Scottish Oceans Institute, University of St Andrews, St Andrews, Fife, Scotland, United Kingdom
| | - Naser F Al-Tannak
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, Scotland, UK.,Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Kuwait University, P.O. Box 23924, Safat, 13110, Kuwait City, Kuwait
| | - Malcolm W Kennedy
- Institute of Biodiversity, Animal Health & Comparative Medicine, Graham Kerr Building, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, G12 8QQ, Scotland, UK.
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Premakumar CM, Turner MA, Morgan C. Relationship between arginine intake in parenteral nutrition and preterm neonatal population plasma arginine concentrations: a systematic review. Nutr Rev 2020; 77:878-889. [PMID: 31504841 PMCID: PMC6888765 DOI: 10.1093/nutrit/nuz049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Context Very preterm neonates (VPNs) are unable to digest breast milk and therefore rely on parenteral nutrition (PN) formulations. This systematic review was prepared following PRISMA-P 2015 guidelines. For the purpose of this review, desirable mean plasma arginine concentration is defined as ≥80 micromoles/L. Objective The review was performed to answer the following research question: “In VPNs, are high amounts of arginine in PN, compared with low amounts of arginine, associated with appropriate circulating concentrations of arginine?” Therefore, the aims were to 1) quantify the relationship between parenteral arginine intakes and plasma arginine concentrations in PN-dependent VPNs; 2) identify any features of study design that affect this relationship; and 3) estimate the target parenteral arginine dose to achieve desirable preterm plasma arginine concentrations. Data Sources The PubMed, Scopus, Web of Science, and Cochrane databases were searched regardless of study design; review articles were not included. Data Extraction Only articles that discussed amino acid (AA) intake and measured plasma AA profile post PN in VPNs were included. Data were obtained using a data extraction checklist that was devised for the purpose of this review. Data Analysis Twelve articles met the inclusion criteria. The dose–concentration relationship of arginine content (%) and absolute arginine intake (mg/(kg × d)) with plasma arginine concentrations showed a significant positive correlation (P < 0.001). Conclusion Future studies using AA solutions with arginine content of 17%–20% and protein intakes of 3.5–4.0 g/kg per day may be needed to achieve higher plasma arginine concentrations.
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Affiliation(s)
- Chandini M Premakumar
- Institute of Translational Medicine, University of Liverpool, Department of Women's and Children's Health, Liverpool Women's Hospital, Liverpool, United Kingdom.,Faculty of Pharmacy, Universiti Kebangsaan Malaysia, Jalan Raja Muda Abdul Aziz, Kuala Lumpur, Malaysia
| | - Mark A Turner
- Institute of Translational Medicine, University of Liverpool, Department of Women's and Children's Health, Liverpool Women's Hospital, Liverpool, United Kingdom.,Neonatal Intensive Care Unit, Liverpool Women's Hospital, Liverpool, United Kingdom
| | - Colin Morgan
- Neonatal Intensive Care Unit, Liverpool Women's Hospital, Liverpool, United Kingdom
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10
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Abstract
Proteins are key structural components of all human cells and are also involved in key physiologic processes through their roles as enzymes, hormones and transport proteins. Protein requirements are substantially higher in preterm infants than those born at term, yet inadequate protein intakes are a common problem on many neonatal units. Very preterm infants (VPT, <32 weeks) commonly receive parenteral amino acid solutions which are typically commenced on admission, and increased over the next few days. Several recent studies have explored differing parenteral amino acid intakes in the first few days, and recommendations have recently been updated. Parenteral nutrition intakes are decreased as enteral feeds are tolerated, but human milk alone will not meet protein needs in most VPT and supplementation or fortification will be required. This review paper considers basic protein and amino acid physiology in the newborn period, and the evidence base for current recommendations.
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Affiliation(s)
- Nicholas D Embleton
- Newcastle Neonatal Service, Newcastle Hospitals NHS Trust, Newcastle upon Tyne, UK.
| | - Chris H P van den Akker
- Emma Children's Hospital, Amsterdam UMC, University of Amsterdam and Vrije Universiteit Amsterdam, Pediatrics - Neonatology, Amsterdam, The Netherlands
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Cormack BE, Harding JE, Miller SP, Bloomfield FH. The Influence of Early Nutrition on Brain Growth and Neurodevelopment in Extremely Preterm Babies: A Narrative Review. Nutrients 2019; 11:E2029. [PMID: 31480225 PMCID: PMC6770288 DOI: 10.3390/nu11092029] [Citation(s) in RCA: 83] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 08/22/2019] [Accepted: 08/27/2019] [Indexed: 12/29/2022] Open
Abstract
Extremely preterm babies are at increased risk of less than optimal neurodevelopment compared with their term-born counterparts. Optimising nutrition is a promising avenue to mitigate the adverse neurodevelopmental consequences of preterm birth. In this narrative review, we summarize current knowledge on how nutrition, and in particular, protein intake, affects neurodevelopment in extremely preterm babies. Observational studies consistently report that higher intravenous and enteral protein intakes are associated with improved growth and possibly neurodevelopment, but differences in methodologies and combinations of intravenous and enteral nutrition strategies make it difficult to determine the effects of each intervention. Unfortunately, there are few randomized controlled trials of nutrition in this population conducted to determine neurodevelopmental outcomes. Substantial variation in reporting of trials, both of nutritional intakes and of outcomes, limits conclusions from meta-analyses. Future studies to determine the effects of nutritional intakes in extremely preterm babies need to be adequately powered to assess neurodevelopmental outcomes separately in boys and girls, and designed to address the many potential confounders which may have clouded research findings to date. The development of minimal reporting sets and core outcome sets for nutrition research will aid future meta-analyses.
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Affiliation(s)
- Barbara E Cormack
- Starship Child Health, Auckland City Hospital, Auckland 1023, New Zealand
- Liggins Institute, University of Auckland, Auckland 1142, New Zealand
| | - Jane E Harding
- Liggins Institute, University of Auckland, Auckland 1142, New Zealand
| | - Steven P Miller
- Department of Paediatrics, Hospital for Sick Children, Toronto, ON M5G, Canada
- Department of Paediatrics, University of Toronto, Toronto, ON M5S, Canada
| | - Frank H Bloomfield
- Starship Child Health, Auckland City Hospital, Auckland 1023, New Zealand.
- Liggins Institute, University of Auckland, Auckland 1142, New Zealand.
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Pillai A, Albersheim S, Elango R. High-dose parenteral amino acid intake in very low birthweight infants: what is the current evidence? Curr Opin Clin Nutr Metab Care 2019; 22:236-241. [PMID: 30883467 DOI: 10.1097/mco.0000000000000560] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
PURPOSE OF REVIEW There is uncertainty regarding optimal dosing for parenteral amino acids in preterm infants and wide variability exists in clinical practice. There is new data from clinical trials trying to address these concerns. We review the recent evidence on parenteral high-dose amino acid intake in very low birth weight (VLBW) neonates with a focus on relevant clinical outcomes. RECENT FINDINGS Preterm infants often receive less protein than intended in the first week of life. Parenteral amino acid administration in doses that exceed requirements, however, leads to increased oxidation and higher blood urea concentrations. Amino acid doses greater than 3.5 g/kg/day have not shown to improve mortality, neonatal morbidities including sepsis, necrotizing enterocolitis, chronic lung disease, growth parameters or neurodevelopmental outcomes at 2 years of age. SUMMARY Parenteral amino acid administration in VLBW infants should be initiated soon after birth at a dose of at least 1.5 g/kg/day to maintain anabolism. The maximum dose for parenteral amino acid should be between 2.5 and 3.5 g/kg/day, with adequate nonprotein calories and micronutrients to ensure efficient protein utilization and growth.
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Affiliation(s)
- Anish Pillai
- Neonatal-Perinatal Medicine, BC Women's Hospital and Health Centre
- Department of Pediatrics, University of British Columbia
- BC Children's Hospital Research Institute
| | - Susan Albersheim
- Neonatal-Perinatal Medicine, BC Women's Hospital and Health Centre
- Department of Pediatrics, University of British Columbia
- BC Children's Hospital Research Institute
| | - Rajavel Elango
- Neonatal-Perinatal Medicine, BC Women's Hospital and Health Centre
- Department of Pediatrics, University of British Columbia
- BC Children's Hospital Research Institute
- School of Population and Public Health, University of British Columbia, Vancouver, BC, Canada
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Osborn DA, Schindler T, Jones LJ, Sinn JKH, Bolisetty S. Higher versus lower amino acid intake in parenteral nutrition for newborn infants. Cochrane Database Syst Rev 2018; 3:CD005949. [PMID: 29505664 PMCID: PMC6494253 DOI: 10.1002/14651858.cd005949.pub2] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
BACKGROUND Sick newborn and preterm infants frequently are not able to be fed enterally, necessitating parenteral fluid and nutrition. Potential benefits of higher parenteral amino acid (AA) intake for improved nitrogen balance, growth, and infant health may be outweighed by the infant's ability to utilise high intake of parenteral AA, especially in the days after birth. OBJECTIVES The primary objective is to determine whether higher versus lower intake of parenteral AA is associated with improved growth and disability-free survival in newborn infants receiving parenteral nutrition.Secondary objectives include determining whether:• higher versus lower starting or initial intake of amino acids is associated with improved growth and disability-free survival without side effects;• higher versus lower intake of amino acids at maximal intake is associated with improved growth and disability-free survival without side effects; and• increased amino acid intake should replace non-protein energy intake (glucose and lipid), should be added to non-protein energy intake, or should be provided simultaneously with non-protein energy intake.We conducted subgroup analyses to look for any differences in the effects of higher versus lower intake of amino acids according to gestational age, birth weight, age at commencement, and condition of the infant, or concomitant increases in fluid intake. SEARCH METHODS We used the standard search strategy of the Cochrane Neonatal Review Group to search the Cochrane Central Register of Controlled Trials (2 June 2017), MEDLINE (1966 to 2 June 2017), Embase (1980 to 2 June 2017), and the Cumulative Index to Nursing and Allied Health Literature (CINAHL) (1982 to 2 June 2017). We also searched clinical trials databases, conference proceedings, and citations of articles. SELECTION CRITERIA Randomised controlled trials of higher versus lower intake of AAs as parenteral nutrition in newborn infants. Comparisons of higher intake at commencement, at maximal intake, and at both commencement and maximal intake were performed. DATA COLLECTION AND ANALYSIS Two review authors independently selected trials, assessed trial quality, and extracted data from included studies. We performed fixed-effect analyses and expressed treatment effects as mean difference (MD), risk ratio (RR), and risk difference (RD) with 95% confidence intervals (CIs) and assessed the quality of evidence using the GRADE approach. MAIN RESULTS Thirty-two studies were eligible for inclusion. Six were short-term biochemical tolerance studies, one was in infants at > 35 weeks' gestation, one in term surgical newborns, and three yielding no usable data. The 21 remaining studies reported clinical outcomes in very preterm or low birth weight infants for inclusion in meta-analysis for this review.Higher AA intake had no effect on mortality before hospital discharge (typical RR 0.90, 95% CI 0.69 to 1.17; participants = 1407; studies = 14; I2 = 0%; quality of evidence: low). Evidence was insufficient to show an effect on neurodevelopment and suggest no reported benefit (quality of evidence: very low). Higher AA intake was associated with a reduction in postnatal growth failure (< 10th centile) at discharge (typical RR 0.74, 95% CI 0.56 to 0.97; participants = 203; studies = 3; I2 = 22%; typical RD -0.15, 95% CI -0.27 to -0.02; number needed to treat for an additional beneficial outcome (NNTB) 7, 95% CI 4 to 50; quality of evidence: very low). Subgroup analyses found reduced postnatal growth failure in infants that commenced on high amino acid intake (> 2 to ≤ 3 g/kg/day); that occurred with increased amino acid and non-protein caloric intake; that commenced on intake at < 24 hours' age; and that occurred with early lipid infusion.Higher AA intake was associated with a reduction in days needed to regain birth weight (MD -1.14, 95% CI -1.73 to -0.56; participants = 950; studies = 13; I2 = 77%). Data show varying effects on growth parameters and no consistent effects on anthropometric z-scores at any time point, as well as increased growth in head circumference at discharge (MD 0.09 cm/week, 95% CI 0.06 to 0.13; participants = 315; studies = 4; I2 = 90%; quality of evidence: very low).Higher AA intake was not associated with effects on days to full enteral feeds, late-onset sepsis, necrotising enterocolitis, chronic lung disease, any or severe intraventricular haemorrhage, or periventricular leukomalacia. Data show a reduction in retinopathy of prematurity (typical RR 0.44, 95% CI 0.21 to 0.93; participants = 269; studies = 4; I2 = 31%; quality of evidence: very low) but no difference in severe retinopathy of prematurity.Higher AA intake was associated with an increase in positive protein balance and nitrogen balance. Potential biochemical intolerances were reported, including risk of abnormal blood urea nitrogen (typical RR 2.77, 95% CI 2.13 to 3.61; participants = 688; studies = 7; I2 = 6%; typical RD 0.26, 95% CI 0.20 to 0.32; number needed to treat for an additional harmful outcome (NNTH) 4; 95% CI 3 to 5; quality of evidence: high). Higher amino acid intake in parenteral nutrition was associated with a reduction in hyperglycaemia (> 8.3 mmol/L) (typical RR 0.69, 95% CI 0.49 to 0.96; participants = 505; studies = 5; I2 = 68%), although the incidence of hyperglycaemia treated with insulin was not different. AUTHORS' CONCLUSIONS Low-quality evidence suggests that higher AA intake in parenteral nutrition does not affect mortality. Very low-quality evidence suggests that higher AA intake reduces the incidence of postnatal growth failure. Evidence was insufficient to show an effect on neurodevelopment. Very low-quality evidence suggests that higher AA intake reduces retinopathy of prematurity but not severe retinopathy of prematurity. Higher AA intake was associated with potentially adverse biochemical effects resulting from excess amino acid load, including azotaemia. Adequately powered trials in very preterm infants are required to determine the optimal intake of AA and effects of caloric balance in parenteral nutrition on the brain and on neurodevelopment.
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Affiliation(s)
- David A Osborn
- University of SydneyCentral Clinical School, Discipline of Obstetrics, Gynaecology and NeonatologySydneyNSWAustralia2050
| | - Tim Schindler
- Royal Hospital for WomenNewborn CareBarker StreetRandwickNSWAustralia2031
| | - Lisa J Jones
- University of SydneyCentral Clinical School, Discipline of Obstetrics, Gynaecology and NeonatologyCamperdownNSWAustralia
| | - John KH Sinn
- Royal North Shore Hospital, The University of SydneyDepartment of NeonatologySt. Leonard'sSydneyNew South WalesAustralia2065
| | - Srinivas Bolisetty
- Royal Hospital for WomenNewborn CareBarker StreetRandwickNSWAustralia2031
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14
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Leenders EKSM, de Waard M, van Goudoever JB. Low- versus High-Dose and Early versus Late Parenteral Amino-Acid Administration in Very-Low-Birth-Weight Infants: A Systematic Review and Meta-Analysis. Neonatology 2018; 113:187-205. [PMID: 29268262 DOI: 10.1159/000481192] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 09/04/2017] [Indexed: 12/22/2022]
Abstract
OBJECTIVES Providing parenteral amino acids to very-low-birth-weight infants during the first weeks of life is critical for adequate growth and neurodevelopment. However, there is no consensus about what dose is appropriate or when to initiate supplementation. As a result, daily practice varies among neonatal intensive care units. The objective of our study was to determine the effects of early parenteral amino-acid supplementation (within 24 h of birth) versus later initiation and high dose (>3.0 g/kg/day) versus a lower dose on growth and morbidities. METHODS A systematic review and meta-analysis of publications identified by searching PubMed, EMBASE, and Cochrane databases was conducted. Randomized controlled studies were eligible if information on growth was available. RESULTS The search identified 14 studies. No differences were observed in growth or morbidity after early or high-dose amino-acid supplementation, but for several outcomes, meta-analysis was not possible due to study heterogeneity. Initiation of amino acids within the first 24 h of life appeared to be safe and well tolerated, and leads more rapidly to a positive nitrogen balance. CONCLUSIONS Administering a high dose (>3.0 g/kg/day) or an early dose (≤24 h) of parenteral amino acids is safe and well tolerated but does not offer significant benefits on growth. Further large-scale randomized controlled trials in preterm infants are needed to study the effects of early and high-dose amino acids on growth and morbidity more consistently and extensively.
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Affiliation(s)
- Erika K S M Leenders
- Department of Pediatrics, VU University Medical Center, Amsterdam, The Netherlands
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15
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Moonen RM, Cavallaro G, Huizing MJ, González-Luis GE, Mosca F, Villamor E. Association between the p.Thr1406Asn polymorphism of the carbamoyl-phosphate synthetase 1 gene and necrotizing enterocolitis: A prospective multicenter study. Sci Rep 2016; 6:36999. [PMID: 27833157 PMCID: PMC5105130 DOI: 10.1038/srep36999] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 10/20/2016] [Indexed: 12/04/2022] Open
Abstract
The p.Thr1406Asn (rs1047891) polymorphism of the carbamoyl-phosphate synthetase 1 (CPS1) gene has been linked to functional consequences affecting the downstream availability of the nitric oxide precursor L-arginine. L-arginine concentrations are decreased in preterm infants with necrotizing enterocolitis (NEC). In this multicenter prospective study, we investigated the association of the p.Thr1406Asn polymorphism with NEC in 477 preterm infants (36 cases of NEC) from 4 European neonatal intensive care units (Maastricht, Las Palmas de Gran Canaria, Mantova, and Milan). Allele and genotype frequencies of the p.Thr1406Asn polymorphism did not significantly differ between the infants with and without NEC. In contrast, the minor A-allele was significantly less frequent in the group of 64 infants with the combined outcome NEC or death before 34 weeks of corrected gestational age than in the infants without the outcome (0.20 vs. 0.31, P = 0.03). In addition, a significant negative association of the A-allele with the combined outcome NEC or death was found using the dominant (adjusted odds ratio, aOR: 0.54, 95% CI 0.29–0.99) and the additive (aOR 0.58, 95% CI 0.36–0.93) genetic models. In conclusion, our study provides further evidence that a functional variant of the CPS1 gene may contribute to NEC susceptibility.
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Affiliation(s)
- Rob M Moonen
- Department of Pediatrics, Zuyderland Medical Center Heerlen, 6130 MB, The Netherlands.,Department of Pediatrics, Maastricht University Medical Center (MUMC+), School for Oncology and Developmental Biology (GROW), Maastricht, 6202 AZ, The Netherlands
| | - Giacomo Cavallaro
- Neonatal Intensive Care Unit, Department of Clinical Sciences and Community Health, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Università degli Studi di Milano, Milan, 20122, Italy
| | - Maurice J Huizing
- Department of Pediatrics, Maastricht University Medical Center (MUMC+), School for Oncology and Developmental Biology (GROW), Maastricht, 6202 AZ, The Netherlands
| | - Gema E González-Luis
- Department of Pediatrics, Hospital Universitario Materno-Infantil de Canarias, Las Palmas de Gran Canaria, 35016, Spain
| | - Fabio Mosca
- Neonatal Intensive Care Unit, Department of Clinical Sciences and Community Health, Fondazione IRCCS Cà Granda Ospedale Maggiore Policlinico, Università degli Studi di Milano, Milan, 20122, Italy
| | - Eduardo Villamor
- Department of Pediatrics, Maastricht University Medical Center (MUMC+), School for Oncology and Developmental Biology (GROW), Maastricht, 6202 AZ, The Netherlands
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