Nutritional factors and pressure injury risk in hospitalised patients post-stroke.

OBJECTIVE: This study aimed to analyse the nutritional factors and pressure injury (PI) risk in hospitalised patients post-stroke. METHOD: The research employed a descriptive observational method in which patients ≥18 years of age were followed for six days. Nutritional evaluation was based on anthropometric and dietary factors. The nutritional risk was assessed via anthropometric measurements, Braden nutrition subscale and daily dietary intake. PI risk was evaluated through the Braden Scale. The Wilcoxon test, paired t-test, and Kruskal-Wallis test were applied and corrected with Bonferroni correction or analysis of variance, followed by the post hoc Tukey test. RESULTS: During their hospital stays, the participating 59 patients had an increase in sensory perception (p=0.02) and nutrition (p=0.005) scores. It was observed that patients at high risk of PI did not meet daily nutritional recommendations for calories, proteins, carbohydrates, lipids and micronutrients (zinc, selenium and copper) compared with patients at low-to-moderate risk. Weight (p<0.001), body mass index (p<0.001), calf (p=0.01) and arm (p=0.04) circumferences, and subscapular (p=0.003) and triceps (p<0.001) skinfolds decreased during the six days of hospitalisation. CONCLUSION: From the findings of this study, it was concluded that nutritional factors, such as unmet recommended daily nutritional requirements of macronutrients and micronutrients, and nutritional status are associated with a higher risk of developing a PI.

Does oxidative stress determine the thermal limits of the regeneration niche of Vriesea friburgensis and Alcantarea imperialis (Bromeliaceae) seedlings?

The predicted environmental changes may be detrimental to initial seedling growth, particularly the expected increase in air temperature. We therefore investigated the thermal limits for growth and development of Vriesea friburgensis and Alcantarea imperialis seedlings in the context of oxidative stress. The optimal temperatures for the growth of V. friburgensis and A. imperialis were 25 and 25-30 °C, respectively. Extreme temperatures (15, 30, or 35 °C) induced oxidative stress in both species with significant accumulation of hydrogen peroxide (H2O2) and nitric oxide (NO). Under oxidative stress, the amount of chlorophyll decreased in both species, more prominently in V. friburgensis, while carotenoid levels dramatically increased in A. imperialis. Notably, the activities of superoxide dismutase, catalase (CAT), and ascorbate peroxidase increased in A. imperialis at extreme temperatures. Similar results were observed for V. friburgensis; however, the activity of CAT remained unaffected regardless of temperature. Seedlings of A. imperialis survived at a wider range of temperatures than V. friburgensis, which had greater than 40% mortality when growing at 30 °C. Overall, precise control of cellular H2O2 and NO levels takes place during the establishment of A. imperialis seedlings, allowing the species to cope with relatively high temperatures. The thermal limits of the fundamental niches of the species investigated, determined based on the ability of seedlings to cope with oxidative stress, were distinct from the realized niches of these species. The results suggest that recruitment success is dependent on the ability of seedlings to handle extreme temperature-triggered oxidative stress, which limits the regeneration niche.

Exploring the mycobiota of bromeliads phytotelmata in Brazilian Campos Rupestres.

The phytotelmata is a water-filled tank on a terrestrial plant, and it plays an important role in bromeliad growth and ecosystem functioning. Even though previous studies have contributed to elucidate the composition of the prokaryotic component of this aquatic ecosystem, its mycobiota (fungal community) is still poorly known. In the present work, ITS2 amplicon deep sequencing was used to examine the fungal communities inhabiting the phytotelmata of two bromeliads species that coexist in a sun-exposed rupestrian field of Southeastern Brazil, namely Aechmea nudicaulis (AN) and Vriesea minarum (VM). Ascomycota was the most abundant phylum in both bromeliads (57.1 and 89.1% in AN and VM respectively, on average), while the others were present in low abundance (< 2%). Mortierellomycota and Glomeromycota were exclusively observed in AN. Beta-diversity analysis showed that samples from each bromeliad significantly clustered together. In conclusion, despite the considerable within-group variation, the results suggested that each bromeliad harbor a distinct fungi community, what could be associated with the physicochemical characteristics of the phytotelmata (mainly total nitrogen, total organic carbon, and total carbon) and plant morphological features.

Night fasting as an alternative to improve nutritional support and glycaemic control in hospitalised patients with exclusive enteral nutrition.

BACKGROUND: Enteral nutrition (EN) assists in the nutritional status of hospitalised patients unable to feed orally. The aim of this study was to determine which method-continuous EN or discontinuous EN, a diet in which the infusion is discontinued for 4h during the night,-is more effective in meeting nutrient recommendations and improving glycaemic control and biochemical parameters related to protein anabolism. METHODS: Patients were divided into two groups: discontinuous (EN administered in mL/h, 18h/day, 4-h night fasting) and continuous (EN administered in mL/h, 22h/day). All patients with EN receive the diet over a 22-h daily period, in which the diet is suspended for two hours/day for daily hospital routines such as bathing, and physiotherapy, and followed for seven days. Evaluated data: prescribed and administered volume, calories, protein, and fibre; capillary blood glucose; erythrogram; serum albumin. RESULTS: 52 patients were followed-up, with 23 (44.2%) in the discontinuous group and 29 (55.8%) in the continuous group. Compared with the continuous group, the discontinuous group received volumes closer to those prescribed, equal or higher calories, and more protein. The capillary glucose values were within the reference range in the discontinuous group, while the continuous group presented elevated values. Both groups presented hypoalbuminaemia, haemoglobin, and haematocrit below the reference values; however, in the discontinuous group, the serum albumin values improved during hospitalisation relative to the continuous. CONCLUSIONS: The method involving discontinuation of EN for 4h was more effective in meeting nutrient recommendations compared with the continuous method. Additionally, in the discontinuous group, we observed a better control of glycaemia when compared to that of the continuous group.

Biochemical and nutritional profile of patients with exclusive enteral nutrition during hospitalization / Perfil bioquímico y nutricional de pacientes con nutrición enteral exclusiva durante hospitalización

BACKGROUND: Enteral nutrition therapy (ENT) is intended to restore the nutritional status of patients. OBJECTIVE: The objective of this study was to evaluate the biochemical and nutritional profile of hospitalized patients with exclusive enteral nutrition. METHODS: It is a longitudinal study, with a sample of 42 hospitalized young and elder adults, with exclusive ENT, for at least seven days. The patients were submitted to nutritional, anthropometric (Body Mass Index, corrected arm muscle area and arm muscle circumference) and biochemical evaluation as albumin, hemoglobin, C-reactive protein, vitamin C, Iron, Zinc and Copper serum. Results and DISCUSSION: It was observed that anthropometric parameters such as weight, BMI, muscle area and circumference increased during hospitalization time only in the elderly (P= 0.016; P=0.018; P = 0.021; P = 0.020). The percentage of adequacy in energy, protein and micronutrients with vitamin C, iron, zinc and copper were adequate during hospitalization for both age groups, according to the estimated average needs. Serum levels of these micronutrients were within normal values for both age groups, with the exception of zinc, which decreased during hospitalization in the elderly. This may be associated with the greater need for this mineral in this age group or with a implicate in its absorption. CONCLUSION: The ENT influence the weight and muscle mass gain in hospitalized elderly patients and, although the appropriate administration of micronutrients, the absorption of zinc was affected. Therefore, monitoring of enteral nutrition is essential in order to avoid worsening nutritional status during hospitalization

INTRODUCCIÓN: La terapia de nutrición enteral (TNE) tiene la finalidad de recuperar el estado nutricional de los pacientes. Objectivo: Se evaluó el perfil bioquímico y nutricional de pacientes hospitalizados con nutrición enteral exclusiva. MÉTODOS: Estudio longitudinal, con muestra compuesta por 42 adultos y ancianos hospitalizados, con TNE exclusiva, por lo menos siete días. Los pacientes fueron sometidos a evaluación nutricional, antropométrica (Índice de Masa Corporal, área muscular del brazo corregida y circunferencia del brazo) y bioquímica como albúmina, proteína C-reactiva, vitamina C, hierro zinc y cobre sérico. Resultados y DISCUSIÓN: Se observó que los parámetros antropométricos como el peso, IMC, área y circunferencia muscular del brazo aumentaron durante el tiempo de internación solo en los ancianos (P= 0.016; P=0.018; P = 0.021; P = 0.020). El porcentaje de adecuación de energía, proteica y micronutrientes como vitamina C, hierro, zinc y cobre fueron adecuados durante el tiempo de internación para ambos grupos de edad, de acuerdo con las necesidades medias estimadas. Los niveles séricos de estos micronutrientes se mantuvieron dentro de los valores normales para ambos grupos de edad, a excepción del zinc, que disminuyó durante la hospitalización en ancianos. Esto puede asociarse a la mayor necesidad de este mineral en este grupo de edad o a un deterioro en su absorción. CONCLUSIÓN: La TNE influye en el aumento de peso y la masa muscular en ancianos y, apesar de la administración adecuada de micronutrientes, se observó un deterioro en la absorción de zinc. Por lo tanto, el monitoreo de la nutrición enteral es esencial para evitar el empeoramiento del estado nutricional durante la hospitalización

Volatile compounds and quality analysis in commercial medicinal plants of Camellia sinensis / Caracterização dos compostos voláteis e análise da qualidade de plantas medicinais comerciais de Camellia sinensis

ABSTRACT: The interest in the use of green tea (Camellia sinensis) (L.) Kuntze (Theaceae) products have increased in the last few years due to its medicinal properties. In the present study, we proposed that headspace solid phase microextraction, in combination with gas chromatography coupled to mass spectrometric could be an efficient method to assess the volatile compounds and to ensure the quality control of C. sinensis. We have also compared the anatomical leaf of different commercial green tea samples, analyzed the information in their labels and determined the presence of foreign materials, moisture content, total ashes and microorganisms. Among the 30 analyzed samples, six were identified as C. sinensis according to the anatomical study; 83.4% were not in accordance with the specified limits for foreign matter and 6.6% for moisture content. All samples presented total ashes in accordance with the current legislation. The analysis indicated the presence of several different volatile organic compounds, being terpenes, hydrocarbons and alcohols the major ones. Microbiological analysis showed that 13.3% and 16.6% of the samples exceeded the limits for counts of molds and yeasts, and for mesophilic bacteria, respectively. 73.3% presented E. coli above the established sanitary limits.

RESUMO: O interesse no chá verde comercial (Camellia sinensis) (L.) Kuntze (Theaceae) tem aumentado nos últimos anos devido suas propriedades medicinais. No presente estudo utilizamos a microextração em fase sólida, em combinação com a cromatografia gasosa acoplada com espectrometria de massas, como um eficiente método de caracterização de compostos voláteis e efetuamos o controle de qualidade de C. sinensis. Comparamos também a anatomia das folhas de diferentes amostras comerciais de chá verde, as informações de seus rótulos e determinamos a presença de matérias estranhas, de microrganismos, o teor de umidade e de cinzas totais. Entre as trinta amostras analisadas, seis foram identificadas como C. sinensis de acordo com o estudo anatômico; 83,4% não estavam de acordo com os limites especificados para matérias estranhas e 6,6% para o teor de umidade. Todas as amostras apresentaram cinzas totais de acordo com a legislação vigente. As análises evidenciaram diversos compostos orgânicos voláteis distintos, sendo majoritários terpenos, hidrocarbonetos e álcoois. As análises microbiológicas mostraram que 13,3 e 16,6% das amostras excedeu os limites de contagem para bolores e leveduras, e para bactérias mesófilas, respectivamente. Por fim, 73,3% das amostras apresentou Escherichia coli acima dos limites sanitários estabelecidos.

Risco nutricional em pacientes hospitalizados durante o período de internação / Nutritional risk in hospitalized patients during hospital stay

Introdução: A desnutrição e a perda de massa muscular em pacientes hospitalizados interferem no progresso dos pacientes, pois, aumentam o tempo de internação, os riscos de morbimortalidade, causando grande impacto na qualidade de vida destes indivíduos. Objetivos: Analisar o risco nutricional em pacientes hospitalizados durante o período de internação. Métodos: Foram analisadas as fichas de indivíduos internados em diferentes clínicas, sendo estes divididos em três grupos o grupo 1 teve um tempo de internação entre sete a 14 dias com média de idade de 49,2 ± 12,7 anos; grupo 2 com tempo de internação de 15 a 29 dias com média de idade de 51,8 ± 16 anos; grupo 3 com tempo de internação ≥ 30 dias com idade média de 50 ± 15 anos. Resultados: Fizeram parte do estudo adultos e idosos de ambos os sexos, onde o grupo 1 apresentou uma amostra de 41% (n=49); o grupo 2 com 35% (n=41) e; o grupo 3 com 23% (n=27). Foi identificado que pacientes com tempo de internação > 15 dias perderam de peso, reduziram IMC (kg/m²) e aumentaram seu percentual de perda de peso. Porém o IMC (kg/m²) tanto do momento da internação quanto o mais próximo da alta se mantiveram sempre adequados nos diferentes tempos de internação em adultos e idosos. Foi evidenciada também uma correlação entre dados bioquímicos e o peso. Discussão: Os pacientes não se encontravam desnutridos no momento da internação, um fator positivo provavelmente favorecido pelo estado nutricional encontrado no momento da internação, e também pelo acompanhamento nutricional deste indivíduo durante o período que esteve internado. Conclusão: A análise em conjunto dos dados encontrados no presente trabalho permite sugerir que os pacientes com um período de internação > 15 dias apresentaram maior risco nutricional, pois, perderam mais peso e consequentemente ocorreu alteração do IMC (kg/m²), percentual de perda de peso e de parâmetros bioquímicos, embora não o suficiente para serem considerados desnutridos

Introduction: Malnutrition and muscle mass loss affect the progress of hospitalized patients because they increase hospitalization time, morbidity and mortality risks, and cause major impact on the quality of life of these individuals. Aim: Analyzing the nutritional risk in hospitalized patients during hospitalization. Methods: medical records of individuals hospitalized in different clinics were analyzed. The patients were divided in three groups, namely: group 1 - patients at mean age 49.2 ± 12.7 years hospitalized between 7-14 days; group 2 - patients at mean age 51.8 ± 16 years hospitalized between 15-29 days; group 3 - patients at mean age 50 ± 15 years hospitalized for more than 30 days. Results: Adults and seniors from both genders participated in the study; group 1 comprised 49 patients (41%); group 2, 41 patients (35%) and; group 3, 27 patients (23%). Patients hospitalized for more than 15 days showed weight loss, reduced BMI (kg/m²) and higher weight loss percentage. However, the BMI (kg/m²) of both the adult and the elderly patients at the time of hospital admission and close to discharge remained appropriate. There was also correlation between the biochemical data and weight. Discussion: Patients were not undernourished at the time they were hospitalized. It is a positive factor, which was probably favored by their nutritional status at the time of hospitalization as well as by the nutritional monitoring of these individuals during the period they remained hospitalized. Conclusion: The joint analysis of the data found in the current study allows suggesting that the patients hospitalized for more than 15 days showed greater nutritional risk because they lost more weight. Consequently, they underwent changes in the BMI (kg/m²), in the weight loss percentage and in the biochemical parameters. However, these changes were not significant enough for the patients to be considered malnourished

No disponible