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      Factors associated with all-cause mortality at 90 days in hospitalized adult patients who received parenteral nutrition Translated title: Factores asociados a mortalidad a los 90 días en pacientes adultos hospitalizados que recibieron nutrición parenteral

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          Abstract

          Abstract Objective: this study aimed to assess the main factors related to mortality in a cohort of hospitalized adult patients who required parenteral nutrition (PN) considering their characteristics, type of admission, procedures, nutritional data, and adverse events. Methods: a retrospective study was performed in a 400-bed university hospital. All adult inpatients that had received ≥ 4 days as first course of PN within 24 months were included. Patients with long-term (> 90 days) or home PN were excluded. The main variable was all-cause mortality at 90 days after the end of PN. Initial independent variables were anthropometric and demographic data, admission characteristics, severity, comorbidity, surgical/medical procedures, baseline biochemical parameters, nutritional risk, and other nutritional data, medications, and adverse events during PN. A Cox proportional hazards regression model was planned to analyze time-to-event data. Results: a total of 634 patients entered the study and 140 (22.1 %) died. Patients were mainly: surgical 471 (74.3 %), male 393 (62.0 %), and age 69.0 (67.8-70.1) years old. The survival time for the entire cohort was 74.0 (95 % CI: 71.6-76.6) days. The final model included 14 variables, with severity and comorbidity being the main ones, but including also anastomotic suture dehiscence, sepsis during PN, days with hyperglycemic events, use of potent opioids, failed attempts at enteral nutrition, and, as a protective one, energy provided in PN. Conclusions: the factors related to mortality in hospitalized adult patients who required PN were mainly severity and comorbidities, but several other important factors were also relevant and could be modified to maximize outcomes in these patients.

          Translated abstract

          Resumen Objetivo: valorar los factores relacionados con la mortalidad en una cohorte de pacientes adultos hospitalizados que recibieron nutrición parenteral (NP) atendiendo a sus características, procedimientos, parámetros nutricionales y complicaciones. Métodos: estudio retrospectivo realizado en un hospital universitario de 400 camas. Se incluyeron todos los pacientes adultos que recibieron ≥ 4 días de NP en un periodo de 24 meses. Se excluyeron los pacientes con NP de largo plazo (> 90 días) o NP domiciliaria. La variable principal fue la mortalidad por cualquier causa en los 90 días posteriores al fin de la NP. Las variables independientes iniciales fueron los datos antropométricos y demográficos, el tipo de ingreso, la gravedad, la comorbilidad, los procedimientos médicos/quirúrgicos, los parámetros bioquímicos, el riesgo nutricional, otros parámetros nutricionales, las medicaciones y los eventos adversos durante la NP. Se realizó un análisis de supervivencia por el modelo de los riesgos proporcionales de Cox. Resultados: en total, 634 pacientes entraron en el estudio, de los cuales 140 (22,1 %) murieron. Los pacientes fueron principalmente: quirúrgicos 471 (74,3 %), hombres 393 (62,0 %) y de 69,0 (67,8-70,1) años de edad. La supervivencia de toda la cohorte fue de 74,0 (IC 95 %: 71,6-76,6) días. El modelo final incluyó 14 variables. La gravedad y la comorbilidad fueron las principales, pero también resultaron incluidas la dehiscencia de la sutura, la sepsis, los días con hiperglucemia, los intentos fallidos de nutrición enteral, el uso de opiáceos potentes y, como protector, la energía administrada en la NP. Conclusión: los factores relacionados con la mortalidad en estos pacientes con NP fueron principalmente la gravedad y la comorbilidad, pero otros factores también fueron relevantes y podrían ser modificados para maximizar los resultados en salud.

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          Most cited references39

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          A new equation to estimate glomerular filtration rate.

          Equations to estimate glomerular filtration rate (GFR) are routinely used to assess kidney function. Current equations have limited precision and systematically underestimate measured GFR at higher values. To develop a new estimating equation for GFR: the Chronic Kidney Disease Epidemiology Collaboration (CKD-EPI) equation. Cross-sectional analysis with separate pooled data sets for equation development and validation and a representative sample of the U.S. population for prevalence estimates. Research studies and clinical populations ("studies") with measured GFR and NHANES (National Health and Nutrition Examination Survey), 1999 to 2006. 8254 participants in 10 studies (equation development data set) and 3896 participants in 16 studies (validation data set). Prevalence estimates were based on 16,032 participants in NHANES. GFR, measured as the clearance of exogenous filtration markers (iothalamate in the development data set; iothalamate and other markers in the validation data set), and linear regression to estimate the logarithm of measured GFR from standardized creatinine levels, sex, race, and age. In the validation data set, the CKD-EPI equation performed better than the Modification of Diet in Renal Disease Study equation, especially at higher GFR (P < 0.001 for all subsequent comparisons), with less bias (median difference between measured and estimated GFR, 2.5 vs. 5.5 mL/min per 1.73 m(2)), improved precision (interquartile range [IQR] of the differences, 16.6 vs. 18.3 mL/min per 1.73 m(2)), and greater accuracy (percentage of estimated GFR within 30% of measured GFR, 84.1% vs. 80.6%). In NHANES, the median estimated GFR was 94.5 mL/min per 1.73 m(2) (IQR, 79.7 to 108.1) vs. 85.0 (IQR, 72.9 to 98.5) mL/min per 1.73 m(2), and the prevalence of chronic kidney disease was 11.5% (95% CI, 10.6% to 12.4%) versus 13.1% (CI, 12.1% to 14.0%). The sample contained a limited number of elderly people and racial and ethnic minorities with measured GFR. The CKD-EPI creatinine equation is more accurate than the Modification of Diet in Renal Disease Study equation and could replace it for routine clinical use. National Institute of Diabetes and Digestive and Kidney Diseases.
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            A modification of the Elixhauser comorbidity measures into a point system for hospital death using administrative data.

            Comorbidity measures are necessary to describe patient populations and adjust for confounding. In direct comparisons, studies have found the Elixhauser comorbidity system to be statistically slightly superior to the Charlson comorbidity system at adjusting for comorbidity. However, the Elixhauser classification system requires 30 binary variables, making its use for reporting and analysis of comorbidity cumbersome. Modify the Elixhauser classification system into a single numeric score for administrative data. For all hospitalizations at the Ottawa Hospital, Canada, between 1996 and 2008, we determined if International Classification of Disease codes for chronic diagnoses were in any of the 30 Elixhauser comorbidity groups. We then used backward stepwise multivariate logistic regression to determine the independent association of each comorbidity group with death in hospital. Regression coefficients were modified into a scoring system that reflected the strength of each comorbidity group's independent association with hospital death. Hospitalizations that were included were 345,795 (derivation: 228,565; validation 117,230). Twenty-one of the 30 groups were independently associated with hospital mortality. The resulting comorbidity score had an equivalent discrimination in the derivation and validation groups (overall c-statistic 0.763, 95% CI: 0.759-0.766). This was similar to models having all Elixhauser groups (0.760, 95% CI: 0.756-0.764) or significant groups only (0.759, 95% CI: 0.754-0.762), but significantly exceeded discrimination when comorbidity was expressed using the Charlson score (0.745, 95% CI: 0.742-0.749). When analyzing administrative data, the Elixhauser comorbidity system can be condensed to a single numeric score that summarizes disease burden and is adequately discriminative for death in hospital.
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              Nutritional risk screening (NRS 2002): a new method based on an analysis of controlled clinical trials.

              A system for screening of nutritional risk is described. It is based on the concept that nutritional support is indicated in patients who are severely ill with increased nutritional requirements, or who are severely undernourished, or who have certain degrees of severity of disease in combination with certain degrees of undernutrition. Degrees of severity of disease and undernutrition were defined as absent, mild, moderate or severe from data sets in a selected number of randomized controlled trials (RCTs) and converted to a numeric score. After completion, the screening system was validated against all published RCTs known to us of nutritional support vs spontaneous intake to investigate whether the screening system could distinguish between trials with a positive outcome and trials with no effect on outcome. The total number of randomized trials identified was 128. In each trial, the group of patients was classified with respect to nutritional status and severity of disease, and it was determined whether the effect of nutritional intervention on clinical outcome was positive or absent. Among 75 studies of patients classified as being nutritionally at-risk, 43 showed a positive effect of nutritional support on clinical outcome. Among 53 studies of patients not considered to be nutritionally at-risk, 14 showed a positive effect (P=0.0006). This corresponded to a likelihood ratio (true positive/false positive) of 1.7 (95% CI: 2.3-1.2). For 71 studies of parenteral nutrition, the likelihood ratio was 1.4 (1.9-1.0), and for 56 studies of enteral or oral nutrition the likelihood ratio was 2.9 (5.9-1.4). The screening system appears to be able to distinguish between trials with a positive effect vs no effect, and it can therefore probably also identify patients who are likely to benefit from nutritional support.
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                Author and article information

                Journal
                nh
                Nutrición Hospitalaria
                Nutr. Hosp.
                Grupo Arán (Madrid, Madrid, Spain )
                0212-1611
                1699-5198
                August 2022
                : 39
                : 4
                : 728-737
                Affiliations
                [2] Igualada Barcelona orgnameHospital d’ Igualada orgdiv1Pharmacy Department Spain
                [1] Barcelona orgnameHospital de Mar orgdiv1Pharmacy Department Spain
                Article
                S0212-16112022000600005 S0212-1611(22)03900400005
                10.20960/nh.04106
                62e81b88-a488-43cd-8f87-c95b8f441efe

                This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.

                History
                : 02 March 2022
                : 29 May 2022
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 39, Pages: 10
                Product

                SciELO Spain

                Categories
                Original Papers

                Comorbidity,Mortalidad,Nutrición parenteral,Energy intake,Opioid analgesics,Severity of illness index,Mortality,Parenteral nutrition,Índice de gravedad,Aporte de energía,Analgésicos opiáceos,Comorbilidad

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