Carbohydrates and insulin resistance in clinical nutrition: Recommendations from the ESPEN expert group.

Growing evidence underscores the important role of glycemic control in health and recovery from illness. Carbohydrate ingestion in the diet or administration in nutritional support is mandatory, but carbohydrate intake can adversely affect major body organs and tissues if resulting plasma glucose becomes too high, too low, or highly variable. Plasma glucose control is especially important for patients with conditions such as diabetes or metabolic stress resulting from critical illness or surgery. These patients are particularly in need of glycemic management to help lessen glycemic variability and its negative health consequences when nutritional support is administered. Here we report on recent findings and emerging trends in the field based on an ESPEN workshop held in Venice, Italy, 8-9 November 2015. Evidence was discussed on pathophysiology, clinical impact, and nutritional recommendations for carbohydrate utilization and management in nutritional support. The main conclusions were: a) excess glucose and fructose availability may exacerbate metabolic complications in skeletal muscle, adipose tissue, and liver and can result in negative clinical impact; b) low-glycemic index and high-fiber diets, including specialty products for nutritional support, may provide metabolic and clinical benefits in individuals with obesity, insulin resistance, and diabetes; c) in acute conditions such as surgery and critical illness, insulin resistance and elevated circulating glucose levels have a negative impact on patient outcomes and should be prevented through nutritional and/or pharmacological intervention. In such acute settings, efforts should be implemented towards defining optimal plasma glucose targets, avoiding excessive plasma glucose variability, and optimizing glucose control relative to nutritional support.

AGREEMENT BETWEEN DIFFERENT EQUATIONS TO ESTIMATE OSMOLARITY OF PARENTERAL NUTRITION SOLUTIONS.

BACKGROUND: our aim was to measure the osmolality of several PN formulas at different component concentrations to determine if equations described in literature to calculate osmolarity accurately predict osmolalality in other experimental conditions different than these used to develop them. METHODS: osmolality of 12 different types of PN solutions, 9 for central and 3 for peripheral perfusion were measured by using freezing point depression in cross-sectional study. We evaluated the agreement (Pearson correlation test) and differential bias between measured osmolality and calculated osmolarity for three different equations described in the literature: Pereira Da Silva, ASPEN Practice Manual and ASPEN guidelines. RESULTS: mean ± SD osmolality of PN solutions was 1789 ± 256 (range 1 540 - 2 372) and 751 ± 64 mOsm/kg (range 689 - 817) for central and peripheral infusion, respectively. The osmolality of PN formulations was mainly due to glucose (r = 0.975) and amino acids (r = 0.948). All studied equations had a good correlation in the bivariate analysis (p = 0.000). All equations had a trend to underestimate the osmolality compared with the measured value. However, ASPEN guidelines equation overestimated the osmolality for peripheral PN. CONCLUSIONS: measurement of osmolality of peripheral PN solutions is important to reduce the risk of phlebitis. The different equations described previously show a good correlation between them although in general underestimate the osmolality.

Objetivo: nuestro objetivo era medir la osmolaridad de varias fórmulas de nutrición parenteral (NP) compuestas por diferentes componentes para determinar si las ecuaciones para calcular la osmolaridad de la solución, descritas en la literatura, predicen su osmolalidad en la práctica clínica. Método: se midió mediante osmometría la osmolalidad de 12 fórmulas de NP diferentes: 9 para acceso venoso central y 3 para acceso periférico, en un estudio transversal. Se analizó el acuerdo (test de correlación de Pearson) y las diferencias entre la osmolalidad medida y la osmolaridad calculada mediante tres fórmulas diferentes: ecuación de Pereira Da Silva, ecuación del manual de práctica clínica de ASPEN y ecuación de las guías de ASPEN. Resultados: la media ± desviación estándar de las soluciones era 1.789 ± 256 (rango 1.540 ­ 2.372) y 751 ± 64 mOsm/kg (rango 689 ­ 817) para perfusión central y periférica, respectivamente. La osmolalidad era debida principalmente a la glucosa (r = 0,975) y a los aminoacidos (r = 0,948). Todas las ecuaciones presentaban una buena correlación en el análisis bivariante (p = 0,000). Todas las ecuaciones tendían a infraestimar la osmolalidad, en comparación con el valor medido. Sin embargo, la ecuación de las guías de la ASPEN sobreestimaba la osmolalidad de las NP periféricas. Conclusiones: conocer la osmolaridad de la solución de NP periférica es importante para reducir el riesgo de flebitis. Las diferentes ecuaciones descritas en la literatura muestran una buena correlación entre ellas, aunque en general infraestiman la osmolalidad.

Individualized measurement of disease-related malnutrition's costs.

BACKGROUND & AIMS: Disease-related malnutrition has a significant economic impact in hospitals, but accurate measurements of these costs have rarely been reported. The aim of this study is to calculate the actual costs of disease-related malnutrition in hospitals, taking into account every cost that patients generate during their hospital stay. METHODS: Patients admitted to medical wards were included in this study. Nutritional evaluation was carried out by two methods (Nutritional Risk Screening 2002 and Short Nutritional Assessment Questionnaire) at admission and/or at discharge. Hospitalization costs were measured for each patient individually, considering the cost of the bed, the Intensive Care Unit, the physicians' services, the laboratory tests and diagnostic procedures, and the drug costs. Differences in costs between malnourished patients and non-malnourished patients were calculated. RESULTS: Malnourished patients incurred higher costs than non-malnourished ones. The cost increase for malnourished patients ranged between 45% and 102%. The nutritional status accounted for most of this increase. The most outstanding difference in patients' costs was between those patients who maintained their nutritional status, either well or malnourished, during their hospital stay. CONCLUSIONS: Disease-related malnutrition clearly has an impact on the cost of hospital care provision, particularly in malnourished patients who do not improve their nutritional status during their hospital stays. Individualized cost analyses are needed to identify the real costs of malnutrition.

Prevalence and costs of malnutrition in hospitalized patients; the PREDyCES Study.

BACKGROUND AND AIMS: The main objective of the PREDyCES study was twofold. First, to analyse the prevalence of hospital malnutrition in Spain, both at admission and at discharge, and second, to estimate the hospital costs associated with disease-related malnutrition. METHODS: The study was a nationwide, cross-sectional, observational, multicentre study in routine clinical practice, which assessed the prevalence of hospital malnutrition both at patient admission and discharge using NRS-2002. A study extension analysed the incidence of complications associated with malnutrition, excess hospital stay and healthcare costs associated with hospital malnutrition. RESULTS: Malnutrition was observed in 23.7% of patients according to NRS-2002. Multivariate analysis revealed that age, gender, presence of malignant disease, diabetes mellitus, dysphagia and polymedication were the main factors associated with the presence of malnutrition. Malnutrition was associated with an increase in length of hospital stay, especially in patients admitted without malnutrition but who presented malnutrition at discharge (15.2 vs. 8.0 days, p < 0.001), with an associated additional cost of €5,829 per patient. CONCLUSION: In Spanish hospitals, almost one in four patients is malnourished. This condition is associated with increased length of hospital stay and associated costs, especially in patients developing malnutrition during hospitalization. Systematic screening for malnutrition should be generalised in order to implement nutritional interventions with well-known effectiveness.

[Incidence of catheter-related infection and associated risk factors in hospitalized patients with parenteral nutrition]. / Incidencia de infección asociada a catéter y factores de riesgo relacionados en pacientes hospitalizados con nutrición parenteral.

INTRODUCTION: The most severe complication of parenteral nutrition (PTN) is catheter-related infection (CRI). OBJECTIVES: To study the incidence rate and factors associated to CRI. MATERIAL AND METHODS: 271 patients followed at the Nutrition Unit for 6 months. The composition of the PTN was calculated according to the metabolic demands. 20.3% received a lipid solution enriched with omega-3 fatty acids (SMOF Fresenius Kabi®) and 79.7% with olive oil (Clinoleic Baxter®). RESULTS: The rate of CRI was 25 per 1,000 days of PTN (55 patients: 61.7±17.8 years, 60.3% males, 29.3±10.6 days of hospital stay and 10.4% mortality). Coagulase-negative Staphylococcus was the most frequently isolated microorganism. There were no differences by age, gender, mortality, or composition of the PTN between patients with or without infection. The patients treated with omega-3 received more calories with the PTN, at the expense of higher intake of glucose and lipids. However, the rate of infection was similar, although there was a not significant trend towards a lower infection rate when using the omega-3 composition (14.5% vs. 23.1%, respectively, p = 0.112). The duration of the nutritional support was higher in patients with CRI (13.0 ± 9.7 vs. 9.3 ± 8.1, p = 0.038). Total mortality (16.9%) was independent of the presence or absence of CRI (10.4% vs. 18.7%, p = 0.090) or of the use of omega-3 lipids or olive oil in the PTN (10.9% vs. 18.5%, p = 0.125). CONCLUSION: Patients submitted to PTN have a high rate of CRI. The presence of infection is related to the duration of the PTN, being independent of the age, gender, and composition of the solution. The use of omega-3 lipid solutions may be beneficial although further studies are needed to confirm this.

[Anemia in critically ill and surgical patient: treatment with intravenous iron]. / Anemia del paciente crítico y quirúrgico: tratamiento con hierro intravenoso.

BACKGROUND: Anemia is a common condition among surgical and critically ill patients and it is usually treated with allogenic blood transfusion (ABT). As ABT is associated with increased morbidity and mortality, alternative therapies for anemia in these patients are actively investigated. OBJECTIVES: To asses the potential usefulness of intravenous iron therapy in critically-ill or surgical patients with anemia. METHODS: Review of published papers with intravenous iron in these patients. Bibliographical search on database Medline (www.ncvi.nlm.nih.gov). RESULTS AND DISCUSSION: Treatment with intravenous iron is not sufficient to treat the anemia of critically ill patients. Its association with erythropoietin (EPO) may have an effect on the rate of ABT, but it has not been shown to improve morbidity, mortality or length of hospital stay. In gastrointestinal or trauma surgery there is no evidence to support the routine preoperative treatment with intravenous iron, although it may be beneficial when it is used with erythropoietin. Intravenous iron alone or in combination with EPO in the postoperative period has not been proved useful for rapid correction of anemia, reduction of hospital stay or mortality.

[Micronutrient supplementation in parenteral nutrition in Spanish hospitals]. / Utilización de micronutrientes en nutrición parenteral en los hospitales Españoles.

Several years ago, it was recommended not to add vitamins or oligoelements to parenteral nutrition (PN) solutions and to administer them immediately after the addition of the micronutrients to avoid their decay. Nowadays, it has been observed that with multilayer bags, ternary mixtures and sunlight protection vitamins degradation is minimal. Daily intake of micronutrients is necessary in the critically ill, malnourished or long-term PN patients. Aiming at knowing the schedules of use of micronutrients in PN in Spanish hospitals and the way PN bags are prepared regarding the factors conditioning their stability, we undertook a telephone survey to the pharmacists in charge of PN at the different hospitals. We compared the data obtained with those from other surveys performed in 2001 and 2003. Pharmacists from 97 hospitals answered the questionnaire (answer rate 88%). The hospital sizes ranged 104-1728 beds. As compared to the data form preceding years, we observed a better adequacy to the current recommendations, although there are still 30% of the hospitals that administer micronutrients on an every other day basis independent of the clinical situation of the patients. In most of the hospitals, multilayer bags are used and/or sunlight protection and ternary mixtures. According to these results showing the different criteria for administering vitamins and oligoelements in PN solutions, it seems necessary to elaborate consensus documents that adapt to the reality of the diverse practices besides promoting the performance of well-designed clinical studies establishing the requirements under special clinical situations.

[The Spanish Society of Parenteral and Enteral Nutrition (SENPE) and its relation with healthcare authorities]. / La Sociedad Española de Nutrición Parenteral y Enteral (SENPE) ante las administraciones públicas.

It has been well documented in medical literature that hyponutrition is a common issue at all healthcare levels, from primary to specialized health care, as well as geriatric healthcare facilities. This problem is not limited to countries with scarce economic resources or limited social development; it is also a universal issue in Europe. Hyponutrition increases the rates of morbidity, mortality, hospital admissions, and hospital stay. These higher figures also represent a higher use of healthcare resources. In spite of this, hyponutrition may often go undetected and the patient may not receive the necessary treatment. This problem requires the cooperation of multiple agents such as the Governments, the healthcare professionals, and the citizens themselves. The VIII Discussion Forum concludes on the need to establish a clear-cut plant for action (similar to the European Alliance for Health Nutrition) and the creation of a platform (coalition) encompassing the voices of healthcare professionals associations, institutions, professional colleges, patients associations, the pharmaceutical companies, and insurance companies. The goals of this platform will be to inform about the extent of this issue, to identity and promote leaders that will convey the aims of this initiative to regional and national healthcare authorities, to present solutions and to collaborate in their implementation, and finally to assess/control the actions taken.

[Optimization of energy intake in artificial nutrition: second lecture Jesús Culebras]. / Optimización del aporte energético en nutrición artificial: segunda lección Jesús Culebras.

A primary goal of nutritional support is to provide the energy requirements needed to sustain metabolic processes, maintain body temperature and tissue repair. The beginnings of artificial nutrition were characterized by high calorie nutritional formulae. The assimilation of physiological concepts, accumulating research data and clinical experience led to a progressive reduction of this intake. During the decade of the 90s of the past century, the concept of permissive underfeeding was proposed. Since then, there has been a controversy between supporters of an initial reduction of energy intake for the critical patient and advocates of a full administration of the estimated calorie needs since the very first days of admission to the Intensive Care Unit. This controversy has extended into clinical practice guidelines, showing a clear disagreement between recent recommendations of ASPEN and ESPEN. In the future we will see the publication of new studies that might better define the evidence on which to base the recommendations of caloric intake. There is also a clear need to deepen the knowledge about the optimal caloric intake in the non-critically ill patient requiring artificial nutrition. It is of great importance that these new concepts, which will arise undoubtedly, are incorporated quickly in the design of nutritional formulas produced by the pharmaceutical industry. Finally, it is important to encourage active participation in continuous educational activities in the field of Nutrition for achieving a rapid incorporation in daily practice of these new concepts of optimal caloric intake.

Parenteral nutrition supplemented with glutamine in patients undergoing bone marrow transplantation.

UNLABELLED: The objective of the study is to evaluate if the administration of glutamine in parenteral nutrition (PN) solution reduces the need for antibiotics, the risk of liver disease and the duration of hospital stay in bone marrow transplantation. MATERIAL AND METHODS: Retrospective observational study in 68 adult patients undergoing a bone marrow transplantation who required PN for mucositis. Of these patients, 40 were given PN with 2,063 +/- 294 kcal/day and 98.6 +/- 13.9 g of amino acids/day, supplemented with Lglutamine (13.5-27 g/day), and 28 were given isocaloric (1,966 +/- 307 kcal/day) and isonitrogenated (92 +/- 16.3 g of amino acids/day) PN with standard glutamine-free amino acid solution. Antibiotic consumption and duration of hospital stay were analysed. Of the total cohort, hepatic profile was studied at the beginning and on day 7 of PN in 50 patients without liver disease at the start of PN. RESULTS: There were no differences between both groups with regard to total number and duration of antibiotics prescribed or hospital stay. Of the 50 patients without hepatic alterations at the beginning of PN, 2 patients in the control group and 5 in the glutamine group developed a hepatic profile compatible with liver disease secondary to PN. Comparing both groups, there were no differences in hepatic enzyme values. CONCLUSIONS: Supplementation with PN glutamine does not improve the variables studied, but the actual clinical use of glutamine in this haematological treatment should be studied further and its potential advantages identified.

The burden of hospital malnutrition in Spain: methods and development of the PREDyCES® study.

It is well known that hospital malnutrition is a highly prevalent condition associated to increase morbidity and mortality as well as related healthcare costs. Although previous studies have already measured the prevalence and/or costs of hospital nutrition in our country, their local focus (at regional or even hospital level) make that the true prevalence and economic impact of hospital malnutrition for the National Health System remain unknown in Spain. The PREDyCES® (Prevalence of hospital malnutrition and associated costs in Spain) study was aimed to assess the prevalence of hospital malnutrition in Spain and to estimate related costs. Some aspects made this study unique: a) It was the first study in a representative sample of hospitals of Spain; b) different measures to assess hospital malnutrition (NRS2002, MNA as well as anthropometric and biochemical markers) where used both at admission and discharge and, c) the economic consequences of malnutrition where estimated using the perspective of the Spanish National Health System.

[Is older age a limit factor when considering health resources? The case of home parenteral nutrition]. / ¿Es la edad un factor limitante en la distribución de recursos?: Nutrición parenteral domiciliaria en el paciente anciano.

UNLABELLED: Some bioethicists consider older age as a limiting factor for receiving special medical care. Older adults comprise the majority of home enteral nutrition patients (neoplams of the head, neck, and upper gastrointestinal tract neuromuscular swallowing disorders, dementia, etc) On the contrary, there are very few data on Home Parenteral Nutrition (HPN) in the elderly. We report these of a 75 years old man affected from a severe short bowel syndrome due to mesenteric thrombosis. After a hospital stay of two months he was sent home on HPN. His current caregiver was her wife, a 72 year old woman suffering from incipient Parkinson's disease. HPN lasted for 11 years and was stopped because of clinical deterioration. During this time he presented 5 catheter- related infections (1.3 episodes/1,000 days). 5 catheters were used (average length 788 days). He was hospitalized four times because of HPN complications. Functional status was maintained along almost all the length of HPN. CONCLUSIONS: The rate of complications in this patient was similar to other groups of age receiving HPN. The technique was not burdensome for the family. Older age cannot be consider, by itself a limiting factor when receiving long term nutritional support.

Peritoneal mucinous carcinomatosis in a patient with a history of Hirschsprung's disease. The role of home parenteral nutrition.

A case of peritoneal mucinous carcinomatosis in a patient who suffered a Hirschsprung disease 30 year before is presented. TH present condition caused an irreversible intestinal obstruction and the patients received home parenteral nutrition without unremarkable complications longer than two years.

[Should hydration and artificial nutrition be accepted as a palliative care?]. / Se considera la hidratación y la nutrición artificial como un cuidado paliativo?

BACKGROUND: Ethical considerations are becoming more and more common in clinical practice. There is no unanimous agreement on which measures should be deemed as basic care, specially regarding hydration and artificial nutrition. AIM: To know the opinion of lay people and health professionals, stratified according to their university degree, about which palliative measures, including hydration and artificial nutrition, should be judged as palliative care. METHODS: A descriptive transversal study has been designed to know the opinion of 256 subjects: 91 users of the National Health System (NHS), 80 nurses, 47 pharmacists and 38 physicians. A questionnaire examined which of the following measures should be considered as palliative care: hygiene, analgesia, pressure ulcer care, position change, sedation, oxygen administration, urinary catheter, hydration, enteral and parenteral nutrition. RESULTS: More than 50% of the participants think that all the proposed measures can be considered as a palliative care, except parenteral nutrition. There is unanimous agreement to accept analgesia, pressure ulcer care, position change and enteraL nutrition as basic care, but there is disagreement in relation to hygiene (p = 0.000), sedation (p = 0.005), oxygen administration (p = 0.007), urinary catheter (p = 0.011) and parenteral nutrition (p = 0.000). There were not differences of opinion after adjusting for age, sex, religious beliefs, and length of professional experience among the individuals that answered the questionnaire. CONCLUSION: There is no agreement on which measures should be considered as palliative care. Opinions differ regarding hygiene, sedation, oxygen administration, urinary catheterisation and parenteral nutrition. In comparison to enteral nutrition, many responders believe that parenteral nutrition is a therapeutic option. The opinions shown in this questionnaire were independent from the demographic characteristics of the subjects that answered it.

Trends in adult home parenteral nutrition in Spain. 1992-2003.

UNLABELLED: There are very few data on trends in prevalence in home parenteral nutrition (HPN) in different countries. NADYA is the committee of the Spanish Society for Parenteral and Enteral Nutrition that takes care of the Spanish registry since 1992. METHOD: A 12-year retrospective study of the activity of the registry was performed. The data were extracted from the NADYA's database as well as from the publications and abstracts reported on a yearly basis since 1992. Data on years 1993 and 1997-9 were not available. RESULTS: Yearly prevalence has more than doubled to 86 patients since 1992. The number of reporting centres went up to 17 in 2003 (10 centres in 1992) As an average, the number of patients per centre is 5. The prevalence in 2003 was 2.15 patients per million inhabitants. There are trends to increasing age at the time of the first indication (42 years in 1992; 51 in 2003). Ischemic and thrombotic vascular diseases were the most common underlying diagnosis in adults. Tunnelled central venous catheters were chosen in 2/3 of the patients. Only around 17% of the patients received support from home delivery companies (11% in 1992) There were more than 1 complication per patient and year, mostly HPN-related. CONCLUSIONS: We found a steadily increase in the number of reported patients and reporting centres over time. Prevalence went up to 2.15 patients per million inhabitants in 2003, still far behind the figures from other western countries. The NADYA registry allows a close follow-up of the evolution of HPN in Spain.

ESPEN Guidelines on Enteral Nutrition: Gastroenterology.

Undernutrition as well as specific nutrient deficiencies have been described in patients with Crohn's disease (CD), ulcerative colitis (UC) and short bowel syndrome (SBS). The present guideline gives evidence-based recommendations for the indication, application and type of formula of enteral nutrition (EN) (oral nutritional supplements (ONS) or tube feeding (TF)) in these patients. It was developed in an interdisciplinary consensus-based process in accordance with officially accepted standards and is based on all relevant publications since 1985. ONS and/or TF in addition to normal food is indicated in undernourished patients with CD or CU to improve nutritional status. In active CD EN is the first line therapy in children and should be used as sole therapy in adults mainly when treatment with corticosteroids is not feasible. No significant differences have been shown in the effects of free amino acid, peptide-based and whole protein formulae for TF. In remission ONS is recommended only in steroid dependent patients in CD. In patients with SBS TF should be introduced in the adaptation phase and should be changed with progressing adaptation to ONS in addition to normal food.

Current use of parenteral nutrition in a pediatric hospital. Comparison to the practise 8 years ago.

UNLABELLED: Parenteral nutrition (PN) has become a mainstay in the treatment of critically ill children, and in the management of extremely premature newborns. We analyse the changes in the profile of pediatric PN in our institution during the last decade. METHOD: The clinical record of all patients under 16 who received PN in 1994 and 2002 were reviewed. Epidemiological data as well as composition of the solutions were recorded. Student t test and Chi-square were used for comparisons as appropriate. p value < 0.05 was considered as statistically significant. RESULTS: 194 patients received PN in 1994 (123 neonates and 71 children); 186 in 2002 (112 neonates and 74 children). The percentage of inpatients who received PN was 10.7% in 1994 vs 3.7% in 2002 in neonates; 1% in 1994 vs 1.3% in 2002, in infants and children. Gastrointestinal surgery in infants and children and extreme prematurity in newborns were the most frequent indication. All neonates received tailored PN solutions while it was standardised in almost 60% of children. Internal jugular vein in children and peripherally inserted central venous catheters in neonates were the most usual vascular access. Length of PN was 10 +/- 8.7 days in 1994 vs 9.2 +/- 8.2 in 2002 in neonates; 15.2 +/- 14.8 days in 1994 vs 11.0 +/- 14.9 in 2002 in infants and children. 21% of the children presented at least one complication due to PN. CONCLUSIONS: There have been very few changes in the use as well as in the profile of the PN practise during the last decade. Gastrointestinal surgery and prematurity were the most frequent indications.