[Results of a survey aimed at dietitians-nutritionists on the management of clinical nutrition teams during the COVID-19 pandemic in hospitals in Catalonia]. / Resultados de una encuesta dirigida a dietistas-nutricionistas sobre la gestión de los equipos de nutrición clínica durante la pandemia de COVID-19 en centros hospitalarios de Cataluña.

INTRODUCTION: Introduction: the COVID-19 pandemic has had direct implications for clinical nutrition teams (NT), both at an organizational and healthcare level. Since March 2020, expert recommendations on nutritional intervention for patients with COVID-19 have been available. Objectives: to describe the nutritional intervention that has been carried out in patients with COVID-19, to estimate the presence of clinical dietitians-nutritionists (DN) in hospitals in Catalonia, and to know the organization of NTs. Methods: a cross-sectional study through an online survey directed to clinical DNs at hospitals in Catalonia (March 2021) was made. Results: the surveys of 36 NTs, made up of 104 DNs, have been analysed. A total of 44.44 % of NTs had to interrupt or reduce some of their usual activities during the pandemic. When nutritional screening was used, it was carried out early (24-48 h) in 56.25 % of cases, and the most common tool was the NRS-2002 (66.67 %). In 41.67 % of NTs a specific hospital diet was established, this being generally hyperproteic (89.66 %). Oral nutritional supplementation was systematically prescribed by 41.67 % of NTs, prioritizing hyperproteic (97.14 %) and hypercaloric (74.29 %) formulas. It is estimated that clinical DNs are present in approximately 61.54 % of public acute hospitals in Catalonia. Conclusions: the results reflect the adaptive capacity of NTs, reorganizing and redistributing their usual tasks and establishing infrequent measures to ensure nutritional support.

INTRODUCCIÓN: Introducción: la pandemia por COVID-19 ha tenido implicaciones directas en los equipos de nutrición (EN) clínica a nivel tanto organizativo como asistencial. Desde marzo de 2020 se dispone de recomendaciones de expertos sobre la intervención nutricional en pacientes con COVID-19. Objetivos: describir la intervención nutricional que se ha llevado a cabo en los pacientes con COVID-19, estimar la presencia de dietistas-nutricionistas (DN) clínicos en los hospitales de Cataluña y conocer la organización de los EN. Métodos: estudio transversal realizado a través de una encuesta online dirigida a los DN clínicos de los hospitales de Cataluña (marzo 2021). Resultados: se han analizado las encuestas de 36 EN, formados por 104 DN. El 44,44 % de los EN han tenido que dejar de hacer o reducir alguna de sus actividades habituales durante la pandemia. Cuando se ha empleado el cribado nutricional, este se ha realizado de forma precoz (24-48 h) en el 56,25 % de los casos y la herramienta más común ha sido el NRS-2002 (66,67 %). El 41,67 % de los EN han instaurado una dieta hospitalaria específica, siendo esta generalmente hiperproteica (89,66 %). El 41,67 % de los EN han pautado la suplementación nutricional oral de forma sistemática, priorizando las fórmulas hiperproteicas (97,14 %) e hipercalóricas (74,29 %). Se estima que la figura del DN clínico está presente en aproximadamente el 61,54 % de los hospitales de agudos públicos de Cataluña. Conclusiones: los resultados reflejan la capacidad de adaptación de los EN, reorganizando y redistribuyendo sus tareas habituales e instaurando medidas poco habituales para asegurar el soporte nutricional.

The incidence of osteopenia of prematurity in preterm infants without phosphate supplementation: A prospective, observational study.

ABSTRACT: To meet their requirements for bone mineralization, it is recommended that preterm infants receive nutritional support containing calcium and phosphate. There are no clear data on the incidence of osteopenia of prematurity (OFP) in preterm infants without phosphate supplementation.This study aimed to investigate the incidence of OFP in preterm infants without phosphate supplementation and its relationship with the duration of parenteral nutrition (PN).This was a prospective and observational study.This study included 30 infants aged <32 gestational weeks and weighed <1500 g at birth. All infants received PN according to a standard protocol, beginning on day 1 with calcium, without phosphate. Starting from the first day of life, all infants received human milk without fortifiers. Oral vitamin D (400 IU/d) was administered when enteral nutrition reached 100 mL/kg/d.The diagnosis of OFP was based on radiographs that were taken of both wrists. Serum alkaline phosphatase (ALP) was measured 3 times: at the start of PN (ALP 1), at the end of PN (ALP 2), and at discharge or the expected due date (ALP 3). Radiographs were obtained on the same day as ALP 3. The duration of PN was analyzed in the presence of OFP using receiver operating characteristic curve analysis.Among the 30 infants, 13 (43%) were diagnosed with OFP. The duration of PN was significantly longer in the OFP group than in the group without OFP (16 vs 12 days; P < .05). The provision of PN for >15 days significantly increased the risk of OFP (odds ratio, 5.40; 95% confidence interval, 1.12-26.04; P = .035).We found a high incidence of OFP in preterm infants without phosphate supplementation. An association was found between the duration of PN and the incidence of OFP. Further research is needed to prevent the development of osteopenia in preterm infants.

Administration of parenteral nutrition during therapeutic hypothermia: a population level observational study using routinely collected data held in the National Neonatal Research Database.

BACKGROUND: Parenteral nutrition is commonly administered during therapeutic hypothermia. Randomised trials in critically ill children indicate that parenteral nutrition may be harmful. OBJECTIVE: To examine the association between parenteral nutrition during therapeutic hypothermia and clinically important outcomes. DESIGN: Retrospective, population-based cohort study using the National Neonatal Research Database; propensity scores were used to create matched groups for comparison. SETTING: National Health Service neonatal units in England, Scotland and Wales. PARTICIPANTS: 6030 term and near-term babies, born 1/1/2010 and 31/12/2017, who received therapeutic hypothermia; 2480 babies in the matched analysis. EXPOSURE: We compared babies that received any parenteral nutrition during therapeutic hypothermia with babies that did not. MAIN OUTCOME MEASURES: Primary outcome: blood culture confirmed late-onset infection; secondary outcomes: treatment for late onset infection, necrotising enterocolitis, survival, length of stay, measures of breast feeding, hypoglycaemia, central line days, time to full enteral feeds, discharge weight. RESULTS: 1475/6030 babies (25%) received parenteral nutrition. In comparative matched analyses, the rate of culture positive late onset infection was higher in babies that received parenteral nutrition (0.3% vs 0.9%; difference 0.6; 95% CI 0.1, 1.2; p=0.03), but treatment for presumed infection was not (difference 0.8%, 95% CI -2.1 to 3.6, p=0.61). Survival was higher in babies that received parenteral nutrition (93.1% vs 90.0%; rate difference 3.1, 95% CI 1.5, 4.7; p<0.001). CONCLUSIONS: Receipt of parenteral nutrition during therapeutic hypothermia is associated with higher late-onset infection but lower mortality. This finding may be explained by residual confounding. Research should address the risks and benefits of parenteral nutrition in this population.

The Influence of Donor Milk Supplementation on Duration of Parenteral Nutrition in Preterm Infants.

BACKGROUND: Data are limited on the association between the use of donor human milk and improvements in feeding tolerance. OBJECTIVE: To determine the influence of the duration of parenteral nutrition on the growth and morbidity of the breastfed newborn when using donated human milk in the absence of mother's own milk. METHODS: We conducted a retrospective study before and after the intervention that compared two groups of newborns (N = 284; each group n = 142). We used a convenience sample of all newborns ≤32 weeks gestation consecutively admitted in a single unit before (Group 1 between December 2012 and May 2014) or after (Group 2 between October 2014 and December 2016) the availability of donor human milk. In Group 2, donor human milk was administered at least 3 to 4 weeks or until the baby weighed 1,500 g. Weight was recorded daily and length and head circumference weekly. Parenteral nutrition was continued until enteral feeding volume reached 120 ml/kg/day. Additional variables measured were the number of days with a central venous catheter, age that the enteral feeding volume reached 150 ml/kg/day, and duration of stay. RESULTS: The duration of parenteral feeding was the same before and after: 12 (8.23) and 11 (7.19) days (p = .822). The z scores for weight and height of newborns was lower in Group 2 = -1.8 (1.0) and -2.3 (1.1) and Group 1 = -1.2 (1.1) (p < .001) and -1.8 (1.4) (p = .005). CONCLUSION: We did not find an association between the administration of donor human milk as a supplement to mother's own milk and reduced number of days of parenteral nutrition. Back translation by Laurence Grummer-Strawn.

Impact of an oral nutrition protocol in patients treated with elective radical cystectomy: a long term follow-up.

Background After radical cystectomy, delayed return of bowel function is relatively common. Although studies investigating on the best modality for delivering nutritional support to this patient group are limited, parenteral nutrition was standard of care in those patients at the urological ward of the University Hospitals Leuven. In 2015, we published the findings from our study conducted in patients undergoing elective regular radical cystectomy at the urological ward of the University Hospitals Leuven comparing the length of hospital stay in patients with early postoperative parenteral nutrition (n = 48) versus an immediate oral nutrition protocol (n = 46). It was demonstrated that the implementation of an oral nutrition protocol was associated with a significant reduced length of hospital stay (median [IQR] of 18 [15-22] to 14 [13-18] days (p < 0.001)). The sample size was however too small to investigate the impact of the oral nutrition protocol on the incidence of catheter-related bloodstream infection, a common parenteral nutrition related complication. Objective To investigate the long term impact of an oral nutrition protocol on the incidence of catheter-related bloodstream infection, duration of catheterization and the length of hospital stay. Method Retrospectively, before (parenteral nutrition group) and after the implementation of the oral nutrition protocol (since March 10th 2010), two cohorts of 549 patients who underwent an elective regular radical cystectomy were included. The incidence of a catheter-related bloodstream infection and the length of stay were compared. A central venous catheter was present in every patient, which is standard of care. Results Catheter-related bloodstream infection was reduced from 22 (4%) to 10 (1.8%) (p = 0.031). The median duration of catheterization was 10 [7-13] days for the parenteral nutrition versus 7 [7-7] days for the oral nutrition group (p < 0.001). The median length of stay between both groups, 20 [17-25] before versus 17 [14-21] days after the implementation of the oral nutrition protocol, also differed significantly (p < 0.001). Implementing the oral nutrition protocol resulted in a parenteral nutrition associated cost saving of €470 per patient. Conclusion This large follow-up study showed that the oral nutrition protocol is associated with a reduction in catheter-related bloodstream infection. Besides, postponing parenteral nutrition in favour of oral nutrition enhances recovery.

Outpatient preoperative oral nutritional support for undernourished surgical patients: A systematic review.

AIMS AND OBJECTIVES: To evaluate the effects of preoperative nutritional support using a regular diet for undernourished surgical patients at the outpatient clinic. BACKGROUND: Undernutrition (or malnutrition) in surgical patients has severe consequences, that is, more complications, longer hospital stay and decreased quality of life. While systematic reviews show the effects of oral nutritional supplements (ONS), enteral and parenteral nutrition in surgical patients, the effects of normal foods and regular diets remain unclear. DESIGN: A systematic review. METHODS: PubMed, CINAHL, Web of Science, PsycINFO, Cochrane Library and EMBASE were searched up to July 24, 2017. Studies on undernourished patients receiving nutritional support using regular or therapeutic diet, performed preoperatively at the outpatient clinic, were considered eligible. Risk of bias was assessed using the Cochrane Risk of Bias tool. Two reviewers independently performed study selection, quality assessment and data extraction. RESULTS: Six studies with moderate risk of bias were included. Interventions were preoperatively performed in mainly oncological outpatients by dieticians and aimed to reach nutrient requirements. Interventions included consults for counselling and advice, follow-up meetings and encouragements, and ONS. Nutritional status, nutrient intake and quality of life improved in supported patients. Improvements were better in counselled patients compared to patients using supplements. Unsupported patients experienced worse outcomes. CONCLUSION: Frequent consults with counselling and advice as nutritional support for undernourished patients before surgery result in improvements to nutritional status, intake and quality of life. This statement is supported by weak evidence due to few studies and inadequate methods. RELEVANCE TO CLINICAL PRACTICE: Nutritional support should be provided to all undernourished surgical patients during preoperative course. Nurses are in key position to provide nutritional support during outpatient preoperative evaluations.

Meta-analysis of the efficacy and safety of structured triglyceride lipid emulsions in parenteral nutrition therapy in China.

BACKGROUND & AIMS: We performed a meta-analysis of data from recent studies to evaluate the safety and efficacy of parenteral nutrition (PN) with structured triglyceride (STG) lipid emulsions compared to medium-chain triglyceride (MCT)/long-chain triglyceride (LCT) lipid emulsions in Chinese patients. METHODS: PubMed, Embase, Cochrane Library, China National Knowledge Internet, Wanfang, and VIP were searched for randomized controlled trials comparing STGs with MCTs/LCTs published in English or Chinese between January 1987 and October 2017. Two independent investigators screened and selected studies according to prespecified selection criteria. Data were pooled and analysed using RevMan® version 5.3. RESULTS: Thirty-two studies comprising 1944 patients were included in the meta-analysis. Compared with MCT/LCT emulsions, STGs resulted in a shorter hospital length of stay (LOS) (weighted mean difference [WMD], -1.65 days; 95% confidence interval [CI]: -2.63, -0.67; P = 0.001) and lower adverse event rates (relative risk, 0.64; 95% CI: 0.48, 0.85; P = 0.002). STGs were associated with a significantly better cumulative nitrogen balance (WMD, 4.04 g/24 h; 95% CI: 3.10, 4.97; P < 0.0001) as well as higher concentrations of pre-albumin (WMD 35.20 mg/L; 95% CI: 26.59, 43.81; P < 0.0001) and albumin (WMD, 1.64 g/L; 95% CI: 1.17, 2.10; P < 0.0001) compared with MCTs/LCTs. In contrast, significantly lower concentrations of plasma triglycerides (WMD, -0.21 mmol/L; 95% CI: -0.30, -0.12; P < 0.0001), total cholesterol (WMD, -0.45 mmol/L; 95% CI: -0.60, -0.29; P < 0.0001), alanine aminotransferase (WMD, -7.68 IU/L; 95% CI: -9.68, -5.68; P < 0.0001) and aspartate aminotransferase (WMD, -10.27 IU/L; 95% CI: -16.05, -4.49; P = 0.0005) were observed in patients receiving STGs compared with MCT/LCTs. STGs were also associated with reduced inflammation and improved immunological function, as reflected by significantly lower C-reactive protein concentrations (WMD, -2.67 mg/L; 95% CI: -4.55, -0.79; P = 0.005) and increased concentrations of IgG (WMD, 2.11 g/L; 95% CI: 0.23, 3.99; P = 0.03), IgA (WMD, 0.21 g/L; 95% CI: 0.14, 0.28; P < 0.0001), CD3+ (WMD, 5.81%; 95% CI: 0.92, 10.70; P = 0.02), and CD4+/CD8+ (WMD, 0.12; 95% CI: 0.00, 0.24; P = 0.04) compared with MCT/LCTs. CONCLUSIONS: Administration of STGs was shown to improve hepatic function, nutrition status, and immunological function and reduce inflammation, LOS, and adverse events compared with MCT/LCTs in Chinese patients receiving PN.

Parenteral Nutrition Electrolyte Abnormalities and Associated Factors Before and After Nutrition Support Team Initiation.

BACKGROUND: Studied since the 1940s, refeeding syndrome still has no universal definition, thus making comparison of studies difficult. Negative outcomes (eg, metabolic abnormalities) may occur with the use of specialized nutrition, such as parenteral nutrition (PN). Less than half of medical institutions have a nutrition support team (NST) managing PN. Interdisciplinary team management of PN may reduce negative outcomes of PN. The objective of this study was to show the value of the NST by measuring differences in PN variables, especially electrolyte abnormalities (EAs), before and after NST initiation at a large medical center and to identify factors associated with EAs among adult subjects receiving PN. MATERIALS AND METHODS: During this retrospective study, computerized medical charts (N = 735) from 2007-2010 were reviewed for electrolyte changes (particularly potassium, magnesium, and phosphorus) the first 3 days following PN initiation in hospitalized adults. Changes in EAs with other variables were compared before and after NST implementation. Equivalent samples sizes were collected to better evaluate the impact of the team. RESULTS: Following the implementation of the NST, fewer EAs were seen in PN patients (53%; χ2  = 10.906, P = .004); significantly less potassium, phosphorus, and magnesium intravenous piggyback supplementation (88.8% vs 94%; χ2  = 5.05, P = .026) was used; and mortality within 30 days of PN cessation was significantly less (12.7% vs 10.6%, P = .012). CONCLUSION: Our study complements existing research, finding that an NST was associated with a decreased occurrence of EAs and mortality in the hospitalized adult receiving PN.

Glucose homeostasis, nutrition and infections during critical illness.

Critical illness is a complex life-threatening disease characterized by profound endocrine and metabolic alterations and by a dysregulated immune response, together contributing to the susceptibility for nosocomial infections and sepsis. Hitherto, two metabolic strategies have been shown to reduce nosocomial infections in the critically ill, namely tight blood glucose control and early macronutrient restriction. Hyperglycaemia, as part of the endocrine-metabolic responses to stress, is present in virtually all critically ill patients and is associated with poor outcome. Maintaining normoglycaemia with intensive insulin therapy has been shown to reduce morbidity and mortality, by prevention of vital organ dysfunction and prevention of new severe infections. The favourable effects of this intervention were attributed to the avoidance of glucose toxicity and mitochondrial damage in cells of vital organs and in immune cells. Hyperglycaemia was shown to impair macrophage phagocytosis and oxidative burst capacity, which could be restored by targeting normoglycaemia. An anti-inflammatory effect of insulin may have contributed to prevention of collateral damage to host tissues. Not using parenteral nutrition during the first week in intensive care units, and so accepting a large macronutrient deficit, also resulted in fewer secondary infections, less weakness and accelerated recovery. This was at least partially explained by a suppressive effect of early parenteral nutrition on autophagic processes, which may have jeopardized crucial antimicrobial defences and cell damage removal. The beneficial impact of these two metabolic strategies has opened a new field of research that will allow us to improve the understanding of the determinants of nosocomial infections, sepsis and organ failure in the critically ill.

Iron supplementation in Switzerland - A bi-national, descriptive and observational study.

BACKGROUND: Iron deficiency is the most common nutritional disorder in the world, and it is the only common nutrient deficiency in industrialised nations. It is thought to be the most common cause of anaemia. Use of iron supplementation in Switzerland has not been previously quantified in detail. OBJECTIVES: We quantified use of iron supplementation from Swiss data and compared it with data from the UK. We assessed the frequency of serum ferritin and haemoglobin tests prior to newly started iron therapy to see whether use was based on documented low iron levels or blood parameters, especially in the case of parenteral iron supplementation. METHODS: We conducted a retrospective descriptive study of prescription iron supplementation use, and compared use of oral or parenteral iron drugs between Switzerland (CH) and the UK. We retrieved Swiss data from the Swiss Health Insurance Helsana Group, and UK data were from the Clinical Practice Research Datalink (CPRD). The study period was 2012 to 2014. RESULTS: The 3-year prevalence of iron supplementation was 9.4% in Switzerland and 4.4% in the UK. Iron use increased slightly between 2012 and 2014 in both countries (CH +0.3%, UK +0.2%). Recorded parenteral iron administration was roughly a thousand times higher in Switzerland (1.9%) than in the UK in 2014. In Switzerland, iron supplements were mostly given to patients aged 20 to 49 years or older than of 80 years. In the UK, iron supplementation was less frequent in younger people, but more prevalent in the elderly. Prior to a first iron prescription, ferritin tests were done more frequently in Switzerland (oral 67.2%, parenteral 86.6%) than in the UK (oral 43.3%, parenteral 65.5%). Haemoglobin was measured before a new parenteral iron therapy rarely in Switzerland (oral 14.9%, parenteral 11.7%), but frequently in the UK (oral 77.4%, parenteral 85.6%). CONCLUSIONS: Iron supplementation is more common in Switzerland than in the UK, particularly parenteral iron supplementation. Haemoglobin measurements prior to a new parenteral iron therapy are relatively infrequent in Switzerland despite the required documentation of haemoglobin prior to therapy.

Guía de práctica clínica SENPE/SEGHNP/SEFH sobre nutrición parenteral pediátrica / Pediatric parenteral nutrition: clinical practice guidelines from the Spanish Society of Parenteral and Enteral Nutrition (SENPE), the Spanish Society of Pediatric Gastroenterology, Hepatology and Nutrition (SEGHNP) and the Spanish Society of Hospital Pharmacy (SEFH)

Introducción: la nutrición parenteral (NP) en la infancia es un tratamiento cuyas características son muy variables en función de la edad y la patología que presente el paciente. Material y métodos: el grupo de Estandarización y Protocolos de la Sociedad Española de Nutrición Parenteral y Enteral (SENPE) es un grupo interdisciplinar formado por miembros de la SENPE, Sociedad Española de Gastroenterología, Hepatología y Nutrición Pediátrica (SEGHNP) y Sociedad Española de Farmacia Hospitalaria (SEFH) que pretende poner al día este tema. Para ello, se ha realizado una revisión pormenorizada de la literatura buscando las evidencias que nos permiten elaborar una Guía de Práctica Clínica siguiendo los criterios del Oxford Centre for Evidence-Based Medicine. Resultados: este manuscrito expone de forma resumida las recomendaciones en cuanto a indicaciones, vías de acceso, requerimientos, modificaciones en situaciones especiales, componentes de las mezclas, prescripción y estandarización, preparación, administración, monitorización, complicaciones y NP domiciliaria. El documento completo se publica como número monográfico. Conclusiones: esta guía pretende servir de apoyo para la prescripción de la NP pediátrica. Constituye la base para tomar decisiones en el contexto de la evidencia existente. Ninguna guía puede tener en cuenta todas las circunstancias clínicas individuales (AU)

Introduction: Parenteral nutrition (PN) in childhood is a treatment whose characteristics are highly variable depending on the age and pathology of the patient. Material and methods: The Standardization and Protocols Group of the Spanish Society for Parenteral and Enteral Nutrition (SENPE) is an interdisciplinary group formed by members of the SENPE, the Spanish Society of Gastroenterology, Hepatology and Pediatric Nutrition (SEGHNP) and the Spanish Society of Hospital Pharmacy (SEFH) that intends to update this issue. For this, a detailed review of the literature has been carried out, looking for the evidences that allow us to elaborate a Clinical Practice Guide following the criteria of the Oxford Center for Evidence-Based Medicine. Results: This manuscript summarizes the recommendations regarding indications, access routes, requirements, modifications in special situations, components of the mixtures, prescription and standardization, preparation, administration, monitoring, complications and home NP. The complete document is published as a monographic number. Conclusions: This guide is intended to support the prescription of pediatric PN. It provides the basis for rational decisions in the context of the existing evidence. No guidelines can take into account all of the often compelling individual clinical circumstances (AU)

Survey on the use of zinc sulfate in parenteral nutrition in spanish hospitals.

OBJECTIVE: In certain situations parenteral nutrition subsidiary patients may  have an increase in zinc demand (Zn). The objective of the study was to know  the scope of the use of Zn sulfate in patients with parenteral nutrition in Spanish hospitals. METHOD: A survey was designed focusing on the incorporation of Zn sulfate into  parenteral nutrition, under real practice conditions, in the adult and pediatric  population. We asked about the number of parenteral nutrition supplemented  with zinc in the last year, by the doses used, and the situations in which it was  added to parenteral nutrition formula. The survey was conducted by telephone  interview to the pharmacists responsible for the parenteral nutrition units. RESULTS: A total of 53.9% (n = 69) of the contacted hospitals responded to the  survey. 60.9% incorporated Zn sulfate into the parenteral nutrition of adults,  and 76.2% used it in pediatric patients. In adults, 31.1% used Zn to complete  the dose provided by the solution of trace elements, 46.7% supplemented Zn in  patients with high intestinal losses, and 28.6% did it in critically ill patients with  a high degree of metabolic stress. The majority supplementation regimen was  10 mg/day (55.6%). In the pediatric population Zn ampules were used mainly in preterm infants, with the most used doses being 200 mcg/kg/day and 400  mcg/kg/day (42.6% and 23.4%, respectively). CONCLUSIONS: The use of zinc sulfate in adult parenteral nutrition to complete  the dosages suggests that solutions of trace elements could be deficient in Zn.  Its use as a supplement in adult parenteral nutrition is not an extended practice  in specialized nutritional support protocols in Spanish hospitals, highlighting its  low employment in patients with significant catabolism.

Objetivo: En determinadas situaciones, los pacientes subsidiarios de nutrición  parenteral pueden tener un incremento en la demanda de zinc (Zn). El objetivo  del estudio fue conocer el alcance de la utilización del sulfato de Zn en pacientes con nutrición parenteral en los hospitales españoles.Método: Se diseñó una encuesta centrada en la incorporación del sulfato de Zn  en nutrición parenteral, en condiciones de práctica reales, en la población adulta  y pediátrica. Se preguntó por el número de nutrición parenteral suplementadas  con zinc en el último año, por las dosis utilizadas, así como por las situaciones  en las que se añadía a la fórmula de nutrición parenteral. La encuesta se realizó  mediante entrevista telefónica a los facultativos responsables de las unidades de nutrición parenteral. Resultados: Respondieron a la encuesta el 53,9% (n = 69)  de los  hospitales contactados. El 60,9% incorporó sulfato de Zn en la nutrición  parenteral de adultos, y el 76,2% lo empleó en pacientes pediátricos. En  adultos, el 31,1% lo utilizó para completar la dosis aportada por la solución de oligoelementos, el 46,7% suplementó Zn en pacientes con pérdidas  intestinales elevadas y el 28,6% en pacientes críticos con alto grado de estrés metabólico. La pauta de suplementación mayoritaria fue la de 10 mg/día (55,6%). En la población pediátrica, las ampollas de Zn se emplearon  principalmente en los neonatos pretérmino, siendo las dosis más utilizadas las  de 200 mcg/kg/día y 400 mcg/kg/día (42,6% y 23,4%, respectivamente).Conclusiones: El empleo de sulfato de zinc en la nutrición parenteral de adultos para completar las dosis sugiere que las soluciones de oligoelementos podrían  ser deficitarias en Zn. Su uso como suplemento en la nutrición parenteral de  adultos no constituye una práctica extendida en los protocolos de soporte  nutricional especializado en los hospitales españoles, destacando su bajo empleo en pacientes con catabolismo importante.

Oxygen and parenteral nutrition two main oxidants for extremely preterm infants: 'It all adds up'.

OBJECTIVES: To assess the effect of early exposure to O2 and parenteral nutrition (PN) on oxidative stress at 36 weeks post-menstrual age (PMA) and on bronchopulmonary dysplasia (BPD) in extremely preterm infants. STUDY DESIGN: A prospective observational study including 116 infants <29 weeks of gestation. Baseline clinical characteristics, FiO2 on day 7, duration of PN and clinical outcomes data were collected. In 39 infants, whole blood glutathione (GSH) and oxidized glutathione (GSSG) at 36 weeks PMA were measured and the redox potential was calculated using Nernst equation. Student's t-test, Chi-square, Spearman correlation, ANOVA, and logistic regression analyses were used as appropriate. P <  0.05 was considered significant. RESULTS: FiO2 ≥25% was associated with higher level of GSSG (0.29 ± 0.04 versus 0.18 ± 0.02 nmol/mg of protein), a more oxidized redox potential (-191 ± 2 versus -198 ± 2 mV) and more BPD (90% versus 45%). PN duration >14 days was also associated with higher level of GSSG (0.26 ± 0.03 versus 0.13 ± 0.02 nmol/mg of protein), a more oxidized redox potential (-193 ± 5 versus -203 ± 2 mV) and more BPD (89% versus 24%). In logistic regression model, each 1% increase in FiO2 and each day increase in PN duration resulted in an increase in the OR for BPD by 1.57 (1.09 -2.28) and 1.17 (1.03 -1.33) respectively. CONCLUSION: Early O2 supplement and PN have additive effects that were associated with prolonged oxidative stress and increased risk of BPD. Strategies targeting judicious use of O2 and decreasing the duration or developing a safer formulation of PN can be targeted to decrease BPD.

Neonatal Outcome of the Late Preterm Infant (34 to 36 Weeks): The Singapore Story.

INTRODUCTION: Late preterm (LP) neonates (34 to 36 weeks gestation) are often managed like term neonates though current literature has identified them to have greater complications. The primary objective of our study was to evaluate and compare morbidity and resource utilisation in LPs especially in view of paucity of Asian studies in this regard. MATERIALS AND METHODS: A retrospective audit was carried out on 12,459 neonates born in KK Women's and Children's Hospital (KKWCH). The chief outcome measures were hypoglycaemia, hypothermia, respiratory morbidity, feeding problems and neonatal jaundice. Resource utilisation included neonatal intensive care unit (NICU) admission, mechanical ventilation, parenteral nutrition and length of hospitalisation. RESULTS: Of 12,459 deliveries, 1221 (10%) were LP deliveries with a significantly increasing trend of 8.6% to 10% from 2002 to 2008 (P = 0.001). Neonatal morbidity in the form of hypoglycaemia (34 weeks vs 35 to 36 weeks vs term: 26% vs 16% vs 1%); hypothermia (5% vs 1.7% vs 0.2%); feeding difficulties (30% vs 9% vs 1.4%); respiratory distress syndrome (RDS) (4% vs 1% vs 0.1%); transient tachypnea of the newborn (TTNB) (23% vs 8% vs 3%) and neonatal jaundice (NNJ) needing phototherapy (63% vs 24% vs 8%), were significantly different between the 3 groups, with highest incidence in 34-week-old infants. Resource utilisation including intermittent positive pressure ventilation (IPPV) (15% vs 3.5% vs 1%), total parenteral nutrition/intravenous (TPN/IV) (53% vs 17% vs 3%) and length of stay (14 ± 22 days vs 4 ± 4.7 days vs 2.6 ± 3.9 days) was also significantly higher (P <0.001) in LPs. CONCLUSION: LP neonates had significantly higher morbidity and resource utilisation compared to term infants. Among the LP group, 34-week-old infants had greater complications compared to infants born at 35 to 36 weeks.

Analysis of the nutritional management practices in intensive care: Identification of needs for improvement.

OBJECTIVES: To analyze the nutritional management practices in Intensive Care (ICU) to detect the need for improvement actions. Re-evaluate the process after implementation of improvement actions. DESIGN: Prospective observational study in 3 phases: 1) observation; 2) analysis, proposal development and dissemination; 3) analysis of the implementation. SETTING: ICU of a hospital of high complexity. PARTICIPANTS: Adult ICU forecast more than 48h of artificial nutrition. PRIMARY ENDPOINTS: Parenteral nutrition (PN), enteral nutrition (EN) (type, average effective volume, complications) and average nutritional ratio. RESULTS: A total of 229 patients (phase 1: 110, phase 3: 119). After analyzing the initial results, were proposed: increased use and precocity of EN, increased protein intake, nutritional monitoring effectiveness and increased supplementary indication NP. The measures were broadcast at specific meetings. During phase 3 more patients received EN (55.5 vs. 78.2%, P=.001), with no significant difference in the start time (1.66 vs. 2.33 days), duration (6.82 vs. 10,12 days) or complications (37,7 vs. 47,3%).Use of hyperproteic diets was higher in phase 3 (0 vs. 13.01%, P<.05). The use of NP was similar (48.2 vs. 48,7%) with a tendency to a later onset in phase 3 (1.25±1.25 vs. 2.45±3.22 days). There were no significant differences in the average nutritional ratio (0.56±0.28 vs. 0.61±0.27, P=.56). CONCLUSIONS: The use of EN and the protein intake increased, without appreciating effects on other improvement measures. Other methods appear to be necessary for the proper implementation of improvement measures.

Effect of Early Parenteral Nutrition on the HPA Axis and on Treatment With Corticosteroids in Intensive Care Patients.

BACKGROUND: Nutrition can affect the hypothalamus-pituitary-adrenal axis. We hypothesized that early administration of parenteral nutrition (PN) during critical illness reduces plasma ACTH and cortisol concentrations and thereby increases the use of corticosteroids. METHODS: This is a preplanned substudy of a randomized controlled trial (EPaNIC) that compared early PN with late PN in 4640 critically ill patients. We investigated the effect of early vs late PN on any steroid treatment and on treatment for ≥ 5 days to capture patients with clinical suspicion of adrenal insufficiency, and assessed whether this was related to an effect on septic shock. Also, in a propensity score-matched subgroup (n=174) of patients not receiving steroids, plasma ACTH and (free) cortisol were quantified. RESULTS: Compared with late PN, more patients on early PN received treatment with corticosteroids (26.2% vs 23.8%; P = .05) and with corticosteroids for ≥ 5 days (14.0% vs 11.9%; P = .03). However, plasma ACTH and (free) cortisol concentrations were unaffected and thus could not explain the higher use of corticosteroids with early PN. Instead, more patients developed new septic shock with early PN (17.0%) than with late PN (14.2%) (P = .01). In multivariate logistic regression analysis, new septic shock was an independent determinant for ≥ 5 days steroid treatment (odds ratio, 6.25; 95% confidence interval, 4.93-7.94; P < .0001), statistically explaining the effect of early PN on steroid treatment. CONCLUSIONS: Early PN did not affect plasma concentrations of ACTH and (free) cortisol, but increased the incidence of septic shock, which statistically explained why more patients on early PN received corticosteroids.

Neonates with short bowel syndrome: an optimistic future for parenteral nutrition independence.

IMPORTANCE: The introduction of hepatoprotective strategies and multidisciplinary management has significantly improved the outcome of neonates with short bowel syndrome (SBS) who require parenteral nutrition (PN). OBJECTIVE: To determine the probability of weaning from PN based on intestinal length in neonates with SBS amidst the new era of hepatoprotective strategies and multidisciplinary management. DESIGN, SETTING, AND PARTICIPANTS: Retrospective medical record review at a single-center academic institution. Neonates with no more than 100 cm of small intestine at a corrected gestational age of no more than 30 days who were diagnosed with a surgical gastrointestinal disease and PN dependent for at least 2 weeks were included. Data were collected from January 1, 2004, through June 1, 2012. EXPOSURE: Neonates with SBS requiring PN. MAIN OUTCOMES AND MEASURES: The probability of wean from PN without reinitiation for at least 1 year, as determined by logistic regression. Predictors of wean were evaluated using exact conditional logistic regression. Predictors of time to wean were determined by Cox proportional hazards regression. RESULTS: Sixty-three patients with a median (25th percentile, 75th percentile [interquartile range (IQR)]) gestational age of 31 (27, 35) weeks, birth weight of 1423 (895, 2445) g, small intestinal length of 41.0 (24.0, 65.0) cm, and predicted length of 29.0% (17.1%, 45.5%) underwent analysis. Fifty-one patients (81%) received a fish oil-based lipid emulsion (1 g/kg/d), 40 (63%) were weaned, 11 (17%) remained PN dependent, 4 (6%) underwent transplant, and 8 (13%) died while on PN. Excluding patients who underwent transplant or died, the median (IQR) small intestinal length was 55.0 (28.0, 75.0) cm in weaned and 26.0 (14.0, 41.0) cm in PN-dependent patients (P = .006), with 40 of 51 (78%) weaned by study end. The cumulative probability of wean for patients with at least 50 cm of small intestine was 88% after 12 and 96% after 24 months. Patients with less than 50 cm of small intestine had a cumulative probability of wean of 23% after 12, 38% after 24, and 71% after 57 months. Small intestinal length was found to be the primary predictor of wean. Notable predictors of time to wean included the amount of small intestine remaining (hazard ratio, 1.94 [95% CI, 1.45-2.58] per 20 cm of intestine; P < .001), entirety of care within our institution (3.27 [1.59-6.72]; P = .001), and intestinal lengthening procedure (0.19 [0.04-0.84]; P = .03). CONCLUSIONS AND RELEVANCE: The majority of patients will wean from PN despite short intestinal length, likely as a result of new management strategies combined with a multidisciplinary team approach.

Impact of early parenteral nutrition on metabolism and kidney injury.

A poor nutritional state and a caloric deficit associate with increased morbidity and mortality, but a recent multicenter, randomized controlled trial found that early parenteral nutrition to supplement insufficient enteral nutrition increases morbidity in the intensive care unit, including prolonging the duration of renal replacement therapy, compared with withholding parenteral nutrition for 1 week. Whether early versus late parenteral nutrition impacts the incidence and recovery of AKI is unknown. Here, we report a prespecified analysis from this trial, the Early Parenteral Nutrition Completing Enteral Nutrition in Adult Critically Ill Patients (EPaNIC) study. The timing of parenteral nutrition did not affect the incidence of AKI, but early initiation seemed to slow renal recovery in patients with stage 2 AKI. Early parenteral nutrition did not affect the time course of creatinine and creatinine clearance but did increase plasma urea, urea/creatinine ratio, and nitrogen excretion beginning on the first day of amino acid infusion. In the group that received late parenteral nutrition, infusing amino acids after the first week also increased ureagenesis. During the first 2 weeks, ureagenesis resulted in net waste of 63% of the extra nitrogen intake from early parenteral nutrition. In conclusion, early parenteral nutrition does not seem to impact AKI incidence, although it may delay recovery in patients with stage 2 AKI. Substantial catabolism of the extra amino acids, which leads to higher levels of plasma urea, might explain the prolonged duration of renal replacement therapy observed with early parenteral nutrition.

Role of disease and macronutrient dose in the randomized controlled EPaNIC trial: a post hoc analysis.

RATIONALE: Early parenteral nutrition to supplement insufficient enteral feeding during intensive care (early PN) delays recovery as compared with withholding parenteral nutrition for 1 week (late PN). OBJECTIVES: To assess whether deleterious effects of early PN relate to severity of illness or to the dose or type of macronutrients. METHODS: Secondary analyses of a randomized controlled trial (EPaNIC; n = 4,640) performed in seven intensive care units from three departments in two Belgian hospitals. In part 1, all patients were included to assess the effect of the randomized allocation to early PN or late PN in subgroups of patients with increasing-on-admission severity of illness. In part 2, observationally, the association of the amount and type of macronutrients with recovery was documented in those patient cohorts still present in intensive care on Days 3, 5, 7, 10, and 14. MEASUREMENTS AND MAIN RESULTS: The primary end point was time to live discharge from the intensive care unit. For part 1, a secondary end point, acquisition of new infections, was also analyzed. All statistical analyses were performed by univariable and adjusted multivariable methods. In none of the subgroups defined by type or severity of illness was a beneficial effect of early PN observed. The lowest dose of macronutrients was associated with the fastest recovery and any higher dose, administered parenterally or enterally, was associated with progressively more delayed recovery. The amount of proteins/amino acids rather than of glucose appeared to explain delayed recovery with early feeding. CONCLUSIONS: Early combined parenteral/enteral nutrition delayed recovery irrespective of severity of critical illness. No dose or type of macronutrient was found to be associated with improved outcome. Clinical trial registered with www.clinicaltrials.gov (NCT 00512122).

[Parenteral periferic nutrition: non surgical indications]. / Indicaciones no quirúrgicas de la nutrición parenteral periférica.

INTRODUCTION: Peripheral Parenteral Nutrition, defined as a mixture of micronutrients, vitamins and minerals with lower osmolarity of 800 mOsm/L, it avoids the risk of the central catheter. It has traditionally been used in postoperative patients, but really medical conditions can also benefit from it either as complementary, or as the only one source of nutrients, since a high number of patients require less caloric intake than previously believed. OBJECTIVE: Evaluation of the use of peripheral parenteral nutrition in non postoperative hospitalized patients, reasons for its prescription and duration. MATERIAL AND METHODS: 368 patients who required peripheral parenteral nutrition were studied by the Nutrition Support Unit for 54 months, in a Tertiary Hospital of 1,560 beds, from all, specialties excluding postoperative patients. The study include the mechanisms that led to its use in all its forms: the only one nutritional support or complementing insufficient Enteral Nutrition or Oral Diet. RESULTS: Oncology and Critical Care were the most prescribed pathologies, followed by Pancreatitis, Inflammatory Bowel Disease and HIV and a miscellany of clinical pathologies. Gastrointestinal pathology (pain, diarrhea or vomiting) was the most frequent cause, both in critically ill as in non-critical patients. CONCLUSIONS: Although enteral route is preferred and raised primarily in most patients studied, there are many causes that might impair or nullify it. Peripheral parenteral nutrition is an alternative when caloric intake is impossible or insufficient or refused by the patient, as it minimizes the complications of the central catheter.