Prevalence of diabetes, prediabetes, and stress hyperglycemia: insulin therapy and metabolic control in patients on total parenteral nutrition (prospective multicenter study).

OBJECTIVE: The prevalence of carbohydrate metabolism disorders in patients who receive total parenteral nutrition (TPN) is not well known. These disorders can affect the treatment, metabolic control, and prognosis of affected patients. The aims of this study were to determine the prevalence in noncritically ill patients on TPN of diabetes, prediabetes, and stress hyperglycemia; the factors affecting hyperglycemia during TPN; and the insulin therapy provided and the metabolic control achieved. METHODS: We undertook a prospective multicenter study involving 19 Spanish hospitals. Noncritically ill patients who were prescribed TPN were included, and data were collected on demographic, clinical, and laboratory variables (glycated hemoglobin, C-reactive protein [CRP], capillary blood glucose) as well as insulin treatment. RESULTS: The study included 605 patients. Before initiation of TPN, the prevalence of known diabetes was 17.4%, unknown diabetes 4.3%, stress hyperglycemia 7.1%, and prediabetes 27.8%. During TPN therapy, 50.9% of patients had at least one capillary blood glucose of >180 mg/dL. Predisposing factors were age, levels of CRP and glycated hemoglobin, the presence of diabetes, infectious complications, the number of grams of carbohydrates infused, and the administration of glucose-elevating drugs. Most (71.6%) patients were treated with insulin. The mean capillary blood glucose levels during TPN were: known diabetes (178.6 ± 46.5 mg/dL), unknown diabetes (173.9 ± 51.9), prediabetes (136.0 ± 25.4), stress hyperglycemia (146.0 ± 29.3), and normal (123.2 ± 19.9) (P<.001). CONCLUSION: The prevalence of carbohydrate metabolism disorders is very high in noncritically ill patients on TPN. These disorders affect insulin treatment and the degree of metabolic control achieved.

Hospital management of the patient with dysphagia. Survey and recommendations of SEEN nutrition area.

INTRODUCTION: The prevalence of dysphagia in hospitalized patients is extraordinarily high and little known. The goal of care should be to assess the efficacy and safety of swallowing, to indicate personalized nutritional therapy. The development of Dysphagia Units, as a multidisciplinary team, facilitates comprehensive care for this type of patient. MATERIAL AND METHODS: A observational, cross-sectional, web-based survey-type study, focused on Spanish Society of Endocrinology and Nutrition department heads, was conducted in September-October 2021. The following data were analyzed: size and type of center, existence of a dysphagia unit, dysphagia screening, dietary and nutritional therapy, education and training of professionals and patients, codification, and quality of life evaluation. RESULTS: 65 responses (39% of the total Endocrinology and Nutrition departments). 37% of hospitals have a Dysphagia Unit and 25% are developing it. 75.4% perform screening, with MECV-V in 80.6%, and VED (61.4%) and VFS (54.4%) are performed as main complementary tests. The centers have different models of oral diet, thickeners and nutritional oral supplements adapted to dysphagia. In 40% of the centers, no information is offered on dysphagia, nor on the use of thickeners, dysphagia is coded in 81%, 52.3% have specific nursing protocols and only 8% have scales for quality-of-life evaluation. CONCLUSIONS: The high prevalence and the risk of serious complications require early and multidisciplinary management at the hospital level. The information received by the patient and caregiver about the dietary adaptations they need, is essential to minimize risks and improve quality of life.

Digestive toxicity in cancer treatments. Bibliographic review. Influence on nutritional status.

INTRODUCTION: The cause of death can be attributed to malnutrition in 10-20% of cancer patients. Patients with sarcopenia present more chemotherapy toxicity, less progression-free time, less functional capacity and more surgical complications. Antineoplastic treatments have a high prevalence of adverse effects that compromise nutritional status. The new chemotherapy agents present direct toxicity on the digestive tract (nausea, vomiting, diarrhoea and/or mucositis). We present the frequency of adverse effects with nutritional impact of the most frequent chemotherapy agents used in the treatment of solid tumours, as well as strategies for early diagnosis and nutritional treatment. MATERIAL AND METHODS: Review of commonly used cancer treatments (cytotoxic agents, immunotherapy, targeted therapies) in colorectal, liver, pancreatic; lung, melanoma, bladder, ovary, prostate and kidney cancer. The frequency (%) of gastrointestinal effects, and those of grade ≥3 are recorded. A systematic bibliographic search was carried out in PubMed, Embase, UpToDate, international guides and technical data sheets. RESULTS: They are shown in the form of tables in which the drugs appear together with the probability that they present any digestive adverse effect and the percentage of serious adverse effects (Grade ≥ 3). DISCUSSION: Antineoplastic drugs are associated with a high frequency of digestive complications with nutritional repercussions, which can reduce QoL and cause death as a result of malnutrition or due to the limiting effect of suboptimal treatments, closing the malnutrition-toxicity loop. It is necessary to inform the patient about the risks and establish local protocols regarding the use of antidiarrheal drugs, antiemetics and adjuvants in the management of mucositis. We propose action algorithms and dietary advice that can be used directly in clinical practice, to prevent the negative consequences of malnutrition.

Effects of Immunonutrition on Cancer Patients Undergoing Surgery: A Scoping Review.

INTRODUCTION: There is a large body of evidence about immunonutrition formulas; however, there are still doubts about their usefulness in routine clinical practice as compared with standard formulas. In the age of personalized medicine, new studies appear every year regarding several types of patients; therefore, an updated point of view on these formulas is necessary. METHODS: The Embase database was searched from 2016 to 14 March 2022. Our criteria were articles published in English and Spanish. The evidence quality was evaluated using GRADEpro, and the review was developed according to the PRISMA statement. RESULTS: In this review, a total of 65 unique records were retrieved; however, 36 articles did not meet the inclusion criteria and were thus excluded. In total, 29 articles were included in the final analysis. In the last few years, many meta-analyses have attempted to identify additional existing studies of surgical patients with certain pathologies, mainly oncological patients. Immunonutrition prior to oncological surgery was shown to cause a decrease in inflammatory markers in most of the studies, and the main clinical events that changed were the infectious complications after surgery. The length of stay and mortality data are controversial due to the specific risk factors associated with these events. CONCLUSIONS: The use of immunonutrition in patients who have undergone oncological surgery decreases the levels of inflammatory markers and infectious postoperative complications in almost all localizations. However, more studies are needed to assess the use of immunonutrition based on Enhanced Recovery After Surgery (ERAS) protocols.

Expert Consensus on Morphofunctional Assessment in Disease-Related Malnutrition. Grade Review and Delphi Study.

Disease-related malnutrition (DRM) affects approximately a third of hospitalized patients and is associated with an increased risk of morbimortality. However, DRM is often underdiagnosed and undertreated. Our aim is to evaluate the prognostic value of morphofunctional tools and tests for nutritional assessment in clinical practice. A systematic literature review was conducted to identify studies relating to the morphofunctional assessment of nutritional status and mortality or complications. Evidence was evaluated using the GRADE (Grading of Recommendations, Assessment, Development, and Evaluations) method. Twelve GRADE recommendations were made and divided into seven topics: food intake and nutrient assimilation, anthropometry, biochemical analysis, hand grip strength, phase angle, muscle imaging, and functional status and quality of life. From these recommendations, 37 statements were developed and scored in a two-survey Delphi method by 183 experts. A consensus was reached on accepting 26/37 statements. Surveys had high internal consistency and high inter-rater reliability. In conclusion, evidence-based recommendations were made on the prognostic value of morphofunctional assessment tools and tests to assess malnutrition, most of which were found to be feasible in routine clinical practice, according to expert opinions.

Continuity of care in disease-related malnutrition and nutritional medical treatment.

Disease-related malnutrition (DRM) continues to be a very significant healthcare problem, both in our hospitals and in the community. It is often not properly diagnosed or treated, despite a growing body of evidence highlighting its clinical and economic consequences. The transition between clinical care in the hospital and community services (Primary Care (PC) and Nursing Homes) is a key element in the prevention, detection and treatment of DRM. In October 2020, the Spanish Society of Endocrinology and Nutrition (SEEN) and the main societies of PC physicians in our country (SEMERGEN, SEMFYC and SEMG) met for the first time within the virtual NutriSEEN forum. From that moment on, a joint working group was created for this issue. This document tries to establish joint lines of work between the Clinical Nutrition and Dietetic Units (UNCyD) and the Primary Care teams to improve the detection and treatment of DRM. The clinical consequences and costs associated with DRE, nutritional risk screening, assessment and medical nutritional treatment are considered in a coordinated way between the PC teams and the UNCyD, as well as future proposals to improve the management of DRM.

Executive summary of the position paper on the use of enteral nutrition in advanced dementia.

Dementia is an increasingly prevalent disease in our environment, with significant health and social repercussions. Despite the available scientific evidence, there is still controversy regarding the use of enteral tube nutrition in people with advanced dementia. This document aims to reflect on the key aspects of advanced dementia, tube nutritional therapy and related ethical considerations, as well as to respond to several frequent questions that arise in our daily clinical practice.

Multidisciplinary consensus on nutritional and metabolic therapy in enhanced recovery after abdominal surgery programs: NutRICA Project.

BACKGROUND: The Enhanced Recovery After Surgery (ERAS) care pathways include evidence-based items designed to accelerate recovery after surgery. Interdisciplinarity is one of the key points of ERAS programs. OBJECTIVE: To prepare a consensus document among the members of the Nutrition Area of the Spanish Society of Endocrinology and Nutrition (SEEN) and the Spanish Group for Multimodal Rehabilitation (GERM), in which the goal is to homogenize the nutritional and metabolic management of patients included in an ERAS program. METHODS: 69 specialists in Endocrinology and Nutrition and 85 members of the GERM participated in the project. After a literature review, 79 statements were proposed, divided into 5 sections: 17 of general characteristics, 28 referring to the preoperative period, 4 to the intraoperative, 13 to the perioperative and 17 to the postoperative period. The degree of consensus was determined through a Delphi process of 2 circulations that was ratified by a consistency analysis. RESULTS: Overall, in 61 of the 79 statements there was a consistent agreement, with the degree of consensus being greater among members of the SEEN (64/79) than members of the GERM (59/79). Within the 18 statements where a consistent agreement was not reached, we should highlight some important nutritional strategies such as muscle mass assessment, the start of early oral feeding or pharmaconutrition. CONCLUSION: Consensus was reached on the vast majority of the nutritional measures and care included in ERAS programs. Due to the lack of agreement on certain key points, it is necessary to continue working closely with both societies to improve the recovery of the surgical patients.

New approaches in the nutritional treatment of advanced chronic kidney disease.

INTRODUCTION: Patients with advanced chronic kidney disease (ACKD) have a high prevalence of malnutrition. The dietary restrictions that we usually apply in terms of macro and micronutrients force our patients to follow dietary guidelines that deviate from healthy patterns. OBJETIVES: To determine if a personalized nutritional intervention program, minimizing the usual restrictions would be justified in case it improved the evolution of kidney disease compared to standard treatment. SECUNDARY OBJETIVES: To determine changes in nutrient intakes and in anthropometric and biochemical parameters, as well as quantify episodes of hyperkalemia. MATERIAL AND METHODS: A single-center, randomized and controlled educational intervention clinical trial was conduct in patients from the ERCA outpatients clinic at the Complejo Hospitalario Universitario de Albacete. 75 patients were included, assigning 35 to a Control group and 40 to the Intervention group with 1-year follow-up. The nutritional status was determined using anthropometric data, body composition by Bioimpedance, blood and urine biochemical parameters and a 24-h recall questionnaire. The nutritional intervention was carried out in three different ways: individual, collective and telephone recall. RESULTS: At the beginning of the study, the BMI showed a situation of weight excess with a mean of 28.83 kg/m2 (5.4) in men and 26.96 kg/m2 (4.09) in women. 70% of our patients had overweight. The abdominal circumference was 105.3 cm (10.2) and 92.3 cm (13.7) for men and women respectively without significant changes throughout the study. The percentage of fat mass (FM) was high in both groups for men and women throughout the study. We did not find biochemical parameters of malnutrition and only significant differences were observed in glomerular filtration rate (GFR), which increased in the intervention group. No patient presented any episodes of hyperkalemia during the study. The energy intake in both groups showed an inadequate distribution of macronutrients with a poor intake of carbohydrates (CH) that was supplemented with an excess of fat. In the case of micronutrients, we did observe an increase in potassium and fiber intakes with a decrease in sodium and phosphorus in the intervention group. CONCLUSIONS: Malnutrition is not exclusively an intake defficit and encompasses both the problems derived from a deficit and an excess of nutrients intake. Un to 70% of our patients showed weight excess and a fat mass higher than desirable. The implementation of an individualized nutritional education program, including a vegetables and fiber rich diet, less atherogenic, not only did not cause electrolyte alterations but also slowed the progression of kidney disease.

Aetiological diagnosis of hyponatraemia in non-critical patients on total parenteral nutrition: A prospective multicentre study.

BACKGROUND: In patients receiving total parenteral nutrition (TPN), the frequency of hyponatraemia is high. However, the causes of hyponatraemia in TPN have not been elucidated, although diagnosis is required for appropriate therapy. The aim of this study is to describe the aetiology of hyponatraemia in non-critical hospitalised patients receiving TPN. METHODS: Prospective multicentre study in 19 Spanish hospitals. Non-critically hyponatraemic patients receiving TPN and presenting hyponatraemia over a 9-month period were studied. Data collected included sex, age, previous comorbidities, and serum sodium levels (SNa) before and following TPN initiation. Parameters for study of hyponatraemia were also included: clinical volaemia, the presence of pain, nausea, gastrointestinal losses, diuretic use, oedema, renal function, plasma and urine osmolality, urinary electrolytes, cortisolaemia, and thyroid stimulating hormone. RESULTS: 162 patients were included, 53.7% males, age 66.4 (SD13.8) years. Volume status was evaluated in 142 (88%): 21 (14.8%) were hypovolaemic, 96 (67.6%) euvolaemic and 25 (17.6%) hypervolaemic. In 111/142 patients the analytical assessment of hyponatraemia was completed. Hypovolaemic hyponatraemia was secondary to GI losses in 10/111 (9%), and to diuretics in 3/111 (2.7%). Euvolaemic hyponatraemia was due to Syndrome of Inappropriate Antidiuretic Hormone secretion (SIADH) in 47/111 (42.4%), and to physiological stimuli of Arginine Vasopressin (AVP) secretion in 28/111 (25.2%). Hypervolaemic hyponatraemia was induced by heart failure in 19/111 (17.1%), cirrhosis of the liver in 4/111 (3.6%). CONCLUSIONS: SIADH was the most frequent cause of hyponatraemia in patients receiving TPN. The second most frequent cause was physiological stimuli of AVP secretion induced by pain/nausea.

RECALSEEN. Subgroup: Patient care in the clinical nutrition units of the Spanish National Health System.

INTRODUCTION: Artificial nutrition (AI) is one of the most representative examples of coordinated therapeutic programs, and therefore requires adequate development and organization. The first clinical nutrition units (CNUs) emerged in the public hospitals of the Spanish National Health System (NHS) in the 80s and have gradually been incorporated into the departments of endocrinology and nutrition (DENs). The purpose of our article is to report on the results found in the RECALSEEN study as regards the professional and organizational aspects relating to CNUs and their structure and operation. MATERIALS AND METHODS: Data were collected from the RECALSEEN study, a cross-sectional, descriptive study of the DENs in the Spanish NHS in 2016. The survey was compiled from March to September 2017. Qualitative variables were reported as frequency distributions (number of cases and percentages), and quantitative variables as the mean, median, and standard deviation (SD). RESULTS: A total of 88 (70%) DENs, out of a total of 125 general acute hospitals of the NHS with 200 or more installed beds, completed the survey. CNUs were available in 83% of DENs (98% in hospitals with 500 or more beds). As a median, DENs had one nurse dedicated to nutrition (35% did not have this resource). Fifty-three percent of DENs with nutrition units had dieticians integrated into the unit (median: 1). DENs located in hospitals with 500 or more beds are more complex and have a wide portfolio of monographic unit services (morbid obesity, 78.3%; artificial home nutrition, 87%; chronic diseases, 65.2%) and specific techniques (impedanciometry, 78%). However, only 14% of the centers perform universal screening tests for malnutrition, and a secondary diagnosis of malnutrition only appears in 12.3 reports per 1000 hospital discharges. DISCUSSION: After the 1997 and 2003 studies, the results of 2017 show a marked growth and consolidation of CNUs within the DENs in most hospitals. Today, the growth of this specialty is largely due to the care demand created by hospital clinical nutrition. CNUs still have an insufficient nursing staff and dietitians/nutritionists, and in the latter case, atypical contracts or grants funded by research projects or the pharmaceutical industry are common. Units for specific nutritional diseases and participation in multidisciplinary groups, quite heterogeneous, are concentrated in hospitals with 500 or more beds and represent an excellent opportunity for CNU development. CONCLUSIONS: Many DENs of Spanish hospitals include CNUs where care is provided by endocrinologists, who devote most of their time to clinical nutrition in more than half of the hospitals. This is most common in large centers with a high workload in relation to staffing. There is considerable heterogeneity between hospitals in terms of both the number and type of activity of the CNUs.

RECALSEEN. Subgroup: Patient care in the clinical nutrition units of the Spanish National Health System. / RECALSEEN. Subgrupo: la atención al paciente en las unidades de nutrición clínica del Sistema Nacional de Salud.

INTRODUCTION: Artificial nutrition (AI) is one of the most representative examples of coordinated therapeutic programs, and therefore requires adequate development and organization. The first clinical nutrition units (CNUs) emerged in the public hospitals of the Spanish National Health System (NHS) in the 80s and have gradually been incorporated into the departments of endocrinology and nutrition (DENs). The purpose of our article is to report on the results found in the RECALSEEN study as regards the professional and organizational aspects relating to CNUs and their structure and operation. MATERIALS AND METHODS: Data were collected from the RECALSEEN study, a cross-sectional, descriptive study of the DENs in the Spanish NHS in 2016. The survey was compiled from March to September 2017. Qualitative variables were reported as frequency distributions (number of cases and percentages), and quantitative variables as the mean, median, and standard deviation (SD). RESULTS: A total of 88 (70%) DENs, out of a total of 125 general acute hospitals of the NHS with 200 or more installed beds, completed the survey. CNUs were available in 83% of DENs (98% in hospitals with 500 or more beds). As a median, DENs had one nurse dedicated to nutrition (35% did not have this resource). Fifty-three percent of DENs with nutrition units had dieticians integrated into the unit (median: 1). DENs located in hospitals with 500 or more beds are more complex and have a wide portfolio of monographic unit services (morbid obesity, 78.3%; artificial home nutrition, 87%; chronic diseases, 65.2%) and specific techniques (impedanciometry, 78%). However, only 14% of the centers perform universal screening tests for malnutrition, and a secondary diagnosis of malnutrition only appears in 12.3 reports per 1000 hospital discharges. DISCUSSION: After the 1997 and 2003 studies, the results of 2017 show a marked growth and consolidation of CNUs within the DENs in most hospitals. Today, the growth of this specialty is largely due to the care demand created by hospital clinical nutrition. CNUs still have an insufficient nursing staff and dietitians/nutritionists, and in the latter case, atypical contracts or grants funded by research projects or the pharmaceutical industry are common. Units for specific nutritional diseases and participation in multidisciplinary groups, quite heterogeneous, are concentrated in hospitals with 500 or more beds and represent an excellent opportunity for CNU development. CONCLUSIONS: Many DENs of Spanish hospitals include CNUs where care is provided by endocrinologists, who devote most of their time to clinical nutrition in more than half of the hospitals. This is most common in large centers with a high workload in relation to staffing. There is considerable heterogeneity between hospitals in terms of both the number and type of activity of the CNUs.

Prevalence of severe hypoglycemia in a cohort of patients with type 1 diabetes. / Prevalencia de hipoglucemia grave en una cohorte de pacientes con diabetes tipo 1.

INTRODUCTION: Hypoglycemia is the major limiting factor in the glycemic management of type 1 diabetes. Severe hypoglycemia puts patients at risk of injury and death. Recurrent hypoglycemia leads to impaired awareness of hypoglycemia and this increases the risk of severe hypoglycemia. Recent studies have reported rates for severe hypoglycemia of 35% in type 1 diabetic patients. OBJECTIVES: To assess the prevalence of severe hypoglycemia in type 1 diabetes mellitus patients and to evaluate the relationship between this and impaired awareness of hypoglycemia according to the Clarke test. PATIENTS AND METHODS: The following data were collected from a cohort of type 1 diabetic patients: age, gender, duration of type 1 diabetes, treatment (multiple daily insulin injection or continuous subcutaneous insulin infusion), glycemia self-control, HbA1c, episodes of severe hypoglycemia and impaired awareness of hypoglycemia. RESULTS: Of the participants, 39.8% had had at least one episode of severe hypoglycemia (in the previous 6 months), 11.4% with loss of consciousness (in the previous 12 months). According to the Clark test, 40.9% had impaired awareness of hypoglycemia. Older age and longer duration of diabetes were associated with a higher prevalence of severe hypoglycemia with unconsciousness; older age and a lower level of HbA1c were associated with impaired awareness of hypoglycemia. CONCLUSIONS: Our study allows us to confirm the high rate of severe hypoglycemia and impaired awareness of hypoglycemia in patients with type 1 diabetes.

Multidisciplinary consensus on nutritional and metabolic therapy in enhanced recovery after abdominal surgery programs: NutRICA Project. / Consenso multidisciplinar sobre la terapia nutricional y metabólica en los programas de recuperación intensificada en cirugía abdominal: Proyecto NutRICA.

BACKGROUND: The Enhanced Recovery After Surgery (ERAS) care pathways include evidence-based items designed to accelerate recovery after surgery. Interdisciplinarity is one of the key points of ERAS programs. OBJECTIVE: To prepare a consensus document among the members of the Nutrition Area of the Spanish Society of Endocrinology and Nutrition (SEEN) and the Spanish Group for Multimodal Rehabilitation (GERM), in which the goal is to homogenize the nutritional and metabolic management of patients included in an ERAS program. METHODS: 69 specialists in Endocrinology and Nutrition and 85 members of the GERM participated in the project. After a literature review, 79 statements were proposed, divided into 5 sections: 17 of general characteristics, 28 referring to the preoperative period, 4 to the intraoperative, 13 to the perioperative and 17 to the postoperative period. The degree of consensus was determined through a Delphi process of 2 circulations that was ratified by a consistency analysis. RESULTS: Overall, in 61 of the 79 statements there was a consistent agreement, with the degree of consensus being greater among members of the SEEN (64/79) than members of the GERM (59/79). Within the 18 statements where a consistent agreement was not reached, we should highlight some important nutritional strategies such as muscle mass assessment, the start of early oral feeding or pharmaconutrition. CONCLUSION: Consensus was reached on the vast majority of the nutritional measures and care included in ERAS programs. Due to the lack of agreement on certain key points, it is necessary to continue working closely with both societies to improve the recovery of the surgical patients.

New approaches in the nutritional treatment of advanced chronic kidney disease. / Nuevo enfoque en el tratamiento nutricional de la enfermedad renal crónica avanzada.

INTRODUCTION: Patients with advanced chronic kidney disease (ACKD) have a high prevalence of malnutrition. The dietary restrictions that we usually apply in terms of macro and micronutrients force our patients to follow dietary guidelines that deviate from healthy patterns. OBJECTIVES: To determine if a personalized nutritional intervention program, minimizing the usual restrictions would be justified in case it improved the evolution of kidney disease compared to standard treatment. SECONDARY OBJECTIVES: To determine changes in nutrient intakes and in anthropometric and biochemical parameters, as well as quantify episodes of hyperkalemia. MATERIAL AND METHODS: A single-center, randomized and controlled educational intervention clinical trial was conduct in patients from the ERCA outpatients clinic at the Complejo Hospitalario Universitario de Albacete. 75 patients were included, assigning 35 to a Control group and 40 to the Intervention group with 1-year follow-up. The nutritional status was determined using anthropometric data, body composition by Bioimpedance, blood and urine biochemical parameters and a 24-h recall questionnaire. The nutritional intervention was carried out in three different ways: individual, collective and telephone recall. RESULTS: At the beginning of the study, the BMI showed a situation of weight excess with a mean of 28.83 kg/m2 (5.4) in men and 26.96 kg/m2 (4.09) in women. 70% of our patients had overweight. The abdominal circumference was 105.3 cm (10.2) and 92.3 cm (13.7) for men and women respectively without significant changes throughout the study. The percentage of fat mass (FM) was high in both groups for men and women throughout the study. We did not find biochemical parameters of malnutrition and only significant differences were observed in glomerular filtration rate (GFR), which increased in the intervention group. No patient presented any episodes of hyperkalemia during the study. The energy intake in both groups showed an inadequate distribution of macronutrients with a poor intake of carbohydrates (CH) that was supplemented with an excess of fat. In the case of micronutrients, we did observe an increase in potassium and fiber intakes with a decrease in sodium and phosphorus in the intervention group. CONCLUSIONS: Malnutrition is not exclusively an intake deficit and encompasses both the problems derived from a deficit and an excess of nutrients intake. Un to 70% of our patients showed weight excess and a fat mass higher than desirable. The implementation of an individualized nutritional education program, including a vegetables and fiber rich diet, less atherogenic, not only did not cause electrolyte alterations but also slowed the progression of kidney disease.

Aetiological diagnosis of hyponatraemia in non-critical patients on total parenteral nutrition: A prospective multicentre study.

BACKGROUND: In patients receiving total parenteral nutrition (TPN), the frequency of hyponatraemia is high. However, the causes of hyponatraemia in TPN have not been elucidated, although diagnosis is required for appropriate therapy. The aim of this study is to describe the aetiology of hyponatraemia in non-critical hospitalised patients receiving TPN. METHODS: Prospective multicentre study in 19 Spanish hospitals. Non-critically hyponatraemic patients receiving TPN and presenting hyponatraemia over a 9-month period were studied. Data collected included sex, age, previous comorbidities, and serum sodium levels (SNa) before and following TPN initiation. Parameters for study of hyponatraemia were also included: clinical volaemia, the presence of pain, nausea, gastrointestinal losses, diuretic use, oedema, renal function, plasma and urine osmolality, urinary electrolytes, cortisolaemia, and thyroid stimulating hormone. RESULTS: 162 patients were included, 53.7% males, age 66.4 (SD13.8) years. Volume status was evaluated in 142 (88%): 21 (14.8%) were hypovolaemic, 96 (67.6%) euvolaemic and 25 (17.6%) hypervolaemic. In 111/142 patients the analytical assessment of hyponatraemia was completed. Hypovolaemic hyponatraemia was secondary to GI losses in 10/111 (9%), and to diuretics in 3/111 (2.7%). Euvolaemic hyponatraemia was due to Syndrome of Inappropriate Antidiuretic Hormone secretion (SIADH) in 47/111 (42.4%), and to physiological stimuli of Arginine Vasopressin (AVP) secretion in 28/111 (25.2%). Hypervolaemic hyponatraemia was induced by heart failure in 19/111 (17.1%), cirrhosis of the liver in 4/111 (3.6%). CONCLUSIONS: SIADH was the most frequent cause of hyponatraemia in patients receiving TPN. The second most frequent cause was physiological stimuli of AVP secretion induced by pain/nausea.

[Influence of previous psychiatric disorders on postoperative course in patients undergoing bariatric surgery]. / Influencia de la enfermedad psiquiátrica previa en la evolución de los pacientes sometidos a cirugía bariátrica.

INTRODUCTION: Presurgical evaluation of patients undergoing bariatric surgery includes, among others, a psychological/psychiatric evaluation. Psychiatric disorders that did not contraindicate surgery may persist and influence on weight loss and postoperative clinical course, hindering the success of the procedure. The aim of our study was to analyze the postoperative evolution of our series of patients with and without psychiatric symptoms before surgery. PATIENTS AND METHODS: Retrospective analysis of 109 patients undergoing bariatric surgery with duodenal switch from 2003 to 2008 (follow up > 6 months). We studied weight changes, immediate and delayed complications of surgery and nutritional deficiencies in post-surgical follow-up in patients with previous psychiatric disorders (group 1, n = 17) compared with patients without psychiatric disorders (group 2, n = 92). RESULTS: Patients in group 1 showed a greater tendency for weight gain. They regained a 9.4% of the initial excess weight lost between 18 months after surgery and 36 months after surgery, while patients in group 2 regained only 0.2% in the same period (p < 0.05). There was no difference in immediate surgical complications (5/17 vs 25/92 patients). The mean incidence of late surgical complications was 0.71 per patient in group 1 and 0.22 complications per patient in group 2 (p = 0.02). 52.9% of patients in group 1 had at least one late complication compared to 19.6% of patients in group 2 (p = 0.003). The three most common complications in patients with previous psychiatric disorders were chronic diarrhea, vomits and malnutrition. The presence of nutritional deficiencies were common in both groups, mainly soluble vitamins, iron and zinc. During postoperative follow-up, we found 3.1 +/- 1.6 nutritional deficiencies per patient in group 1 and 2.5 +/- 1.7 in group 2 (p = 0.04). More than three nutritional deficiencies were found in 8 patients in group 1 (52.9%) compared to 23 patients in group 2 (25%) (p = 0.03). CONCLUSIONS: The presence of previous psychiatric disorders may be a predictor of a less positive outcome in morbidly obese patients who undergo bariatric surgery.

Clinical differences between patients with MODY-3, MODY-2 and type 2 diabetes mellitus with I27L polymorphism in the HNF1alpha gene.

OBJECTIVE: The aim of our study was to describe and evaluate the clinical and metabolic characteristics of patients with MODY-3, MODY-2 or type 2 diabetes who presented I27L polymorphism in the HNF1alpha gene. METHODS: The study included 31 previously diagnosed subjects under follow-up for MODY-3 (10 subjects from 5 families), MODY-2 (15 subjects from 9 families), or type 2 diabetes (6 subjects) with I27L polymorphism in the HNF1alpha gene. The demographic, clinical, metabolic, and genetic characteristics of all patients were analyzed. RESULTS: No differences were observed in distribution according to sex, age of onset, or form of diagnosis. All patients with MODY-2 or MODY-3 had a family history of diabetes. In contrast, 33.3% of patients with type 2 diabetes mellitus and I27L polymorphism in the HNF1alpha gene had no family history of diabetes (p < 0.05). No differences were observed in body mass index, prevalence of hypertension, or microvascular or macrovascular complications. Drug therapy was required by 100% of MODY-3 patients, but not required by 100% of MODY-2 patients or 16.7% of patients with type 2 diabetes mellitus and I27L polymorphism in the HNF1alpha gene (p < 0.05). CONCLUSIONS: Occasional difficulties may be encountered when classifying patients with MODY-2, MODY-3 or type 2 diabetes of atypical characteristics, in this case patients who present I27L polymorphism in the HNF1alpha gene.

[Nutritional status in older adults admitted to an acute geriatric unit]. / Estado nutricional de ancianos hospitalizados en una unidad geriátrica de agudos.

INTRODUCTION: Objective: to describe the nutritional status of older adults hospitalized in an acute geriatric unit (AGU) and its association with mortality and days of hospitalization. Material and methods: a retrospective study in 1,084 adults older than 65 years, hospitalized in an AGU. The Mini Nutritional Assessment®-Short Form (MNA®-SF) and subjective global assessment (SGA) were used. The association between nutritional status, mortality, and long hospital stay (> 7 days) was analyzed using regression models and Cox hazard models. Results: mean age was 86.5 years: 58.7% were women. Mean MNA®-SF score was 8.9 (20.0%, well nourished; 48.2%, at nutritional risk, and 31.7% with malnutrition). Using the SGA, 22.1% were well nourished, 54.7% had moderate malnutrition, and 23.2% had severe malnutrition. Agreement between SGA and MNA®-SF was good (kappa, 0.654; p < 0.001), and correctly classified 78.5% of participants. Malnutrition was associated with poorer cognitive status, greater disability, worse ambulation, and lower levels of total protein, albumin, cholesterol, and transferrin. Patients with malnutrition in the MNA®-SF assessment had a higher adjusted mortality risk than those who were well nourished (HR, 1.80; 95% CI, 1.01-3.20), same as those with SGA C versus A (HR, 1.66; 95% CI, 0.96-2.86). Patients with SGA B and C presented a higher adjusted risk of long hospitalization as compared to well nourished subjects (OR, 1.42; 95% CI, 1.04-1.96 and OR, 1.73; 95% CI, 1.18-2.54, respectively. Patients with malnutrition per the MNA-SF® presented a higher adjusted risk of long hospitalization as compared to well nourished subjects (OR, 1.59; 95% CI, 1.09-2.33). Conclusions: nutritional risk and malnutrition are very common in older adults in AGUs, and are associated with higher mortality and longer hospital stay.

INTRODUCCIÓN: Objetivo: describir el estado nutricional de los mayores hospitalizados en una unidad geriátrica de agudos (UGA) y su asociación con la mortalidad y la estancia hospitalaria. Material y métodos: estudio retrospectivo de 1084 personas mayores de 65 años en una UGA. Se emplearon el Mini Nutritional Assessment®-Short Form (MNA®-SF) y la valoración global subjetiva (VGS). La asociación entre estado nutricional, mortalidad y estancia hospitalaria prolongada (> 7 días) se analizó mediante un modelo de regresión y el análisis de riesgos de Cox. Resultados: edad media de 86,5 años: 58,7% de mujeres. La puntuación media del MNA®-SF fue de 8,9, estando el 20,0% sin riesgo nutricional, el 48,2% en riesgo nutricional y el 31,7% con malnutrición. Mediante la VGS, el 22,1% estaban bien nutridos, el 54,7% moderadamente desnutridos y el 23,2% gravemente desnutridos. El acuerdo entre VGS y MNA®-SF fue bueno (kappa = 0,654; p < 0,001), clasificando correctamente al 78,5% de los participantes. La malnutrición se asoció a peor estado cognitivo, mayor discapacidad, peor deambulación y niveles menores de proteínas totales, albúmina, colesterol y transferrina. Los pacientes con malnutrición según el MNA®-SF presentaron una mortalidad ajustada mayor que la de los bien nutridos (HR: 1,80; IC 95%: 1,01-3,20), igual que aquellos con VGS de C frente a los de A (HR: 1,66; IC 95%: 0,96-2,86). Los pacientes con VGS de B (OR: 1,42; IC 95%: 1,04-1,96) y C (OR: 1,73; IC 95%: 1,18-2,54) presentaron mayor riesgo ajustado de estancia hospitalaria prolongada frente a los bien nutridos. Los pacientes con malnutrición según el MNA®-SF presentaron mayor riesgo ajustado de estancia hospitalaria prolongada (OR: 1,59; IC 95%: 1,09-2,33) frente a los bien nutridos. Conclusiones: el riesgo nutricional y la malnutrición son muy frecuentes en los mayores hospitalizados en una UGA y se asocian con mayor mortalidad y estancias más prolongadas.

[Characterization of muscarinic receptors in undifferentiated thyroid cells in Fisher rats]. / Caracterización de receptores muscarínicos en células indiferenciadas tiroideas de ratas Fisher.

INTRODUCTION: The parasympathetic autonomous nervous system exerts control over thyroid function by activation of the muscarinic receptors in follicular cells. Various pharmacological and molecular subtypes of muscarinic receptors (M(1), M(2), M(3), M(4), M(5)) have been identified in central nervous system and peripheral tissues. Controversy surrounds receptor characterization in thyroid cells. MATERIALS AND METHODS: Undifferentiated Fisher rat thyroid epithelial cells (FRT) were cultured. Association and dissociation kinetics assays and antagonist competition studies of the binding of (3)H-N-methylscopolamine ((3)H-NMS) to muscarinic receptors were performed to demonstrate the presence of muscarinic receptors. RESULTS: Specific muscarinic receptors in the plasma membrane of FRT cells were observed with an equilibrium dissociation constant (K(d)) of 0.44 nmol. The order of affinities obtained fitting the data to one binding site model in competition experiments with the muscarinic receptor antagonist was: dicyclomine > hexahydrosiladifenidol (HHSD) = 4-diphenylacetoxy-N-methylpiperidine methiodide (4-DAMP) > pirenzepine > himbacine = 11-[[2-[(diethylamino)methyl]- 1-piperidinyl]acetyl]-5,11-dihydro-6H-pyrido (414)benzodiazepine (AF-DX 116). CONCLUSIONS: The results obtained indicate the existence of specific (3)H-NMS muscarinic binding sites located in the plasma membrane of FRT cells. The results obtained in competition experiments suggest that the receptors present in FRT cells belong to the M(3) subtype.