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1.
Clin Nutr ; 39(9): 2856-2862, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-31932048

RESUMO

BACKGROUND & AIMS: Teduglutide, a GLP-2-analog, has proven effective in two placebo-controlled studies in reducing parenteral support (PS) in patients with short bowel syndrome-associated intestinal failure (SBS-IF) after 24 weeks. The aim of this study was to describe in a real-life situation the effects of teduglutide treatment and their predictive factors. METHODS: We included 54 consecutive SBS-IF patients treated with teduglutide in France for at least 6 months from 10 expert centers. Small bowel length was 62 ± 6 cm and 65% had colon in continuity. PS was 4.4 ±0 .2 infusions per week, started 9.8 ± 1.2 years before. Response (PS reduction ≥ 20%) and PS discontinuation rates were assessed at week 24. Adjusted p values of factors associated with response and weaning were calculated using a multivariate logistic regression model. RESULTS: At week 24, 85% of patients were responders and 24% had been weaned off PS, with a 51% reduction of PS needs and 1.5 ± 0.2 days off PS per week. Response to teduglutide was influenced by a higher baseline oral intake (p = 0.02). Weaning off PS was influenced by the presence of colon (p = 0.04), a lower PS volume (p = 0.03) and a higher oral intake (p = 0.01). There were no differences based on age, bowel length or SBS-IF causes. CONCLUSIONS: Our study confirms the effectiveness of teduglutide in reducing PS needs in SBS-IF patients. We associated reduced parenteral support volume with baseline parenteral volume support, bowel anatomy, and oral intake. These findings underline the role of nutritional optimization when starting the treatment.


Assuntos
Fármacos Gastrointestinais/uso terapêutico , Enteropatias/tratamento farmacológico , Peptídeos/uso terapêutico , Síndrome do Intestino Curto/tratamento farmacológico , Doença Crônica , Estudos de Coortes , Feminino , França , Humanos , Masculino , Pessoa de Meia-Idade , Nutrição Parenteral/estatística & dados numéricos , Peptídeos/efeitos adversos , Síndrome do Intestino Curto/etiologia , Resultado do Tratamento
2.
Clin Nutr ; 36(1): 49-64, 2017 02.
Artigo em Inglês | MEDLINE | ID: mdl-27642056

RESUMO

BACKGROUND: A lack of agreement on definitions and terminology used for nutrition-related concepts and procedures limits the development of clinical nutrition practice and research. OBJECTIVE: This initiative aimed to reach a consensus for terminology for core nutritional concepts and procedures. METHODS: The European Society of Clinical Nutrition and Metabolism (ESPEN) appointed a consensus group of clinical scientists to perform a modified Delphi process that encompassed e-mail communication, face-to-face meetings, in-group ballots and an electronic ESPEN membership Delphi round. RESULTS: Five key areas related to clinical nutrition were identified: concepts; procedures; organisation; delivery; and products. One core concept of clinical nutrition is malnutrition/undernutrition, which includes disease-related malnutrition (DRM) with (eq. cachexia) and without inflammation, and malnutrition/undernutrition without disease, e.g. hunger-related malnutrition. Over-nutrition (overweight and obesity) is another core concept. Sarcopenia and frailty were agreed to be separate conditions often associated with malnutrition. Examples of nutritional procedures identified include screening for subjects at nutritional risk followed by a complete nutritional assessment. Hospital and care facility catering are the basic organizational forms for providing nutrition. Oral nutritional supplementation is the preferred way of nutrition therapy but if inadequate then other forms of medical nutrition therapy, i.e. enteral tube feeding and parenteral (intravenous) nutrition, becomes the major way of nutrient delivery. CONCLUSION: An agreement of basic nutritional terminology to be used in clinical practice, research, and the ESPEN guideline developments has been established. This terminology consensus may help to support future global consensus efforts and updates of classification systems such as the International Classification of Disease (ICD). The continuous growth of knowledge in all areas addressed in this statement will provide the foundation for future revisions.


Assuntos
Desnutrição/diagnóstico , Desnutrição/terapia , Política Nutricional , Terminologia como Assunto , Caquexia/complicações , Consenso , Dieta , Nutrição Enteral , Fragilidade/complicações , Humanos , Avaliação Nutricional , Estado Nutricional , Obesidade/complicações , Sobrepeso/complicações , Nutrição Parenteral , Sarcopenia/complicações , Sociedades Científicas
3.
Clin. nutr ; 34(6)Dec. 2015. tab
Artigo em Inglês | BIGG | ID: biblio-964498

RESUMO

BACKGROUND: Older people suffering from dementia are at increased risk of malnutrition due to various nutritional problems, and the question arises which interventions are effective in maintaining adequate nutritional intake and nutritional status in the course of the disease. It is of further interest whether supplementation of energy and/or specific nutrients is able to prevent further cognitive decline or even correct cognitive impairment, and in which situations artificial nutritional support is justified. OBJECTIVE: It is the purpose of these guidelines to cover these issues with evidence-based recommendations. METHODS: The guidelines were developed by an international multidisciplinary working group in accordance with officially accepted standards. The GRADE system was used for assigning strength of evidence. Recommendations were discussed, submitted to Delphi rounds and accepted in an online survey among ESPEN members. RESULTS: 26 recommendations for nutritional care of older persons with dementia are given. In every person with dementia, screening for malnutrition and close monitoring of body weight are recommended. In all stages of the disease, oral nutrition may be supported by provision of adequate, attractive food in a pleasant environment, by adequate nursing support and elimination of potential causes of malnutrition. Supplementation of single nutrients is not recommended unless there is a sign of deficiency. Oral nutritional supplements are recommended to improve nutritional status but not to correct cognitive impairment or prevent cognitive decline. Artificial nutrition is suggested in patients with mild or moderate dementia for a limited period of time to overcome a crisis situation with markedly insufficient oral intake, if low nutritional intake is predominantly caused by a potentially reversible condition, but not in patients with severe dementia or in the terminal phase of life. CONCLUSION: Nutritional care and support should be an integral part of dementia management. In all stages of the disease, the decision for or against nutritional interventions should be made on an individual basis after carefully balancing expected benefit and potential burden, taking the (assumed) patient will and general prognosis into account.(AU)


Assuntos
Humanos , Idoso , Ácidos Graxos Ômega-3/uso terapêutico , Apoio Nutricional/métodos , Micronutrientes/uso terapêutico , Suplementos Nutricionais , Demência/dietoterapia , Recomendações Nutricionais , Transtornos Cognitivos/dietoterapia , Progressão da Doença , Desnutrição/dietoterapia , Abordagem GRADE
4.
Clin Nutr ; 34(3): 335-40, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25799486

RESUMO

OBJECTIVE: To provide a consensus-based minimum set of criteria for the diagnosis of malnutrition to be applied independent of clinical setting and aetiology, and to unify international terminology. METHOD: The European Society of Clinical Nutrition and Metabolism (ESPEN) appointed a group of clinical scientists to perform a modified Delphi process, encompassing e-mail communications, face-to-face meetings, in group questionnaires and ballots, as well as a ballot for the ESPEN membership. RESULT: First, ESPEN recommends that subjects at risk of malnutrition are identified by validated screening tools, and should be assessed and treated accordingly. Risk of malnutrition should have its own ICD Code. Second, a unanimous consensus was reached to advocate two options for the diagnosis of malnutrition. Option one requires body mass index (BMI, kg/m(2)) <18.5 to define malnutrition. Option two requires the combined finding of unintentional weight loss (mandatory) and at least one of either reduced BMI or a low fat free mass index (FFMI). Weight loss could be either >10% of habitual weight indefinite of time, or >5% over 3 months. Reduced BMI is <20 or <22 kg/m(2) in subjects younger and older than 70 years, respectively. Low FFMI is <15 and <17 kg/m(2) in females and males, respectively. About 12% of ESPEN members participated in a ballot; >75% agreed; i.e. indicated ≥7 on a 10-graded scale of acceptance, to this definition. CONCLUSION: In individuals identified by screening as at risk of malnutrition, the diagnosis of malnutrition should be based on either a low BMI (<18.5 kg/m(2)), or on the combined finding of weight loss together with either reduced BMI (age-specific) or a low FFMI using sex-specific cut-offs.


Assuntos
Consenso , Desnutrição/diagnóstico , Ciências da Nutrição/normas , Tecido Adiposo/metabolismo , Composição Corporal , Índice de Massa Corporal , Técnica Delphi , Europa (Continente) , Feminino , Humanos , Masculino , Fatores de Risco , Sociedades Científicas , Inquéritos e Questionários , Redução de Peso
5.
J Vet Intern Med ; 27 Suppl 1: S67-75, 2013.
Artigo em Inglês | MEDLINE | ID: mdl-24635383

RESUMO

BACKGROUND: Glomerulonephropathies are common causes of kidney disease in dogs. OBJECTIVE: To determine the prevalence of immune-complex glomerulonephritis (ICGN) in North American dogs biopsied for suspected glomerular disease. ANIMALS: Renal biopsies (n = 733) submitted to the Texas Veterinary Renal Pathology Service between January 1, 2007 and December 31, 2012 were reviewed. Dogs were included if the biopsy was performed for suspected glomerular disease. METHODS: Specimens were evaluated by light microscopy (LM), immunofluorescence (IF), and transmission electron microscopy (TEM). Findings were retrospectively evaluated to categorize the diagnosis for each case. For the diagnosis of ICGN, TEM findings were considered conclusive when LM and IF were equivocal. RESULTS: Of the 501 dogs included in the study, 241 (48.1%) had ICGN; 103 (20.6%) had primary glomerulosclerosis; 76 (15.2%) had amyloidosis; 45 (9.0%) had nonimmune complex (IC) glomerulopathy; 24 (4.8%) had non-IC nephropathy; and, 12 (2.4%) had primary tubulointerstitial disease. Many (66/241; 27.4%) ICGN cases required TEM for definitive diagnosis, including 14 cases (5.8%) that were not suspected on LM. Of cases not diagnosed as ICGN, a substantial proportion (60/260; 23.1%) required TEM to rule out immune complex deposits, including 14 of 189 cases (7.4%) presumptively diagnosed as ICGN on LM. CONCLUSIONS AND CLINICAL IMPORTANCE: Approximately half of all dogs biopsied for suspected glomerular disease had conditions other than ICGN. Renal biopsy is needed to accurately categorize the underlying disease and direct appropriate treatment. Additionally, TEM and IF evaluations by experienced nephropathologists are necessary to obtain an accurate diagnosis in many cases.


Assuntos
Amiloidose/veterinária , Complexo Antígeno-Anticorpo/imunologia , Doenças do Cão/epidemiologia , Doenças do Cão/imunologia , Glomerulonefrite/veterinária , Amiloidose/epidemiologia , Amiloidose/imunologia , Animais , Complexo Antígeno-Anticorpo/ultraestrutura , Biópsia/veterinária , Distribuição de Qui-Quadrado , Intervalos de Confiança , Cães , Feminino , Glomerulonefrite/epidemiologia , Glomerulonefrite/imunologia , Masculino , Microscopia Eletrônica de Transmissão/veterinária , Microscopia de Fluorescência , América do Norte/epidemiologia , Prevalência , Estudos Retrospectivos , Sensibilidade e Especificidade
6.
Gastroenterol Clin Biol ; 34 Suppl 1: S57-61, 2010 Sep.
Artigo em Francês | MEDLINE | ID: mdl-20889006

RESUMO

Enteral nutrition is a nutritional therapy that is used in up to 10% of hospitalized patients. It involves a dramatic change in the provision of nutrients to the intestine and this, along with metabolic stress and drugs used, is responsible for a marked dysbiosis. Even though there is a huge level of between-subject variability, this dysbiosis is characterized by a decrease in the dominant flora, an increase in potentially pathogenic microorganisms and a reduction in the number of individual strains. The main characteristic of these changes in the microbiota is diarrhea, which has many consequences in these patients. Saccharomyces boulardii is able to prevent enteral nutrition-associated diarrhea, probably through an increase in short-chain fatty acid production. Alongside its role in the onset and prevention of diarrhea, the microbiota may be involved in energy harvesting and changes in the nutritional status. Manipulations of the microbiota may therefore be a novel way to increase feeding efficiency in tube-fed patients.


Assuntos
Diarreia/prevenção & controle , Nutrição Enteral/efeitos adversos , Metagenoma , Probióticos/uso terapêutico , Saccharomyces/metabolismo , Diarreia/etiologia , Humanos , Fatores de Tempo , Resultado do Tratamento
7.
Transplant Proc ; 42(1): 100-2, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20172289

RESUMO

A 34-year-old-man with short-bowel syndrome received an isolated small bowel graft. On postoperative day (POD) 11, ileal biopsy specimen demonstrated mild to moderate rejection that did not respond to corticosteroid bolus therapy. On POD 14, endoscopy and histologic examination revealed exfoliative rejection that was not controlled after 14 days of therapy with thymoglobulin. On POD 95, the patient underwent surgery again because of intestinal obstruction. The graft was removed 6 months after transplantation because of continuous severe abdominal pain with weight loss. After enterectomy, the patient developed multiple-organ failure and died on POD day 8. This case underlines the severity of exfoliative rejection and suggests that early enterectomy be performed when the diagnosis is made, before deterioration of clinical status and development of infectious and nutritional complications.


Assuntos
Intestino Delgado/transplante , Síndrome do Intestino Curto/cirurgia , Adulto , Soro Antilinfocitário/uso terapêutico , Biópsia , Evolução Fatal , Rejeição de Enxerto/patologia , Humanos , Obstrução Intestinal/cirurgia , Masculino , Insuficiência de Múltiplos Órgãos , Complicações Pós-Operatórias/cirurgia , Reoperação
8.
Transplant Proc ; 42(1): 103-5, 2010.
Artigo em Inglês | MEDLINE | ID: mdl-20172290

RESUMO

We report the case of a 62-year-old man with short-bowel syndrome, referred for intestinal transplantation, who had esophageal varices (EV) due to superior vena cava (SVC) thrombosis. Pretransplantation work-up revealed protein S deficiency. Results of liver function tests were normal. Upper endoscopy showed grade II to III EV in the upper and middle segments of the esophagus. Computed tomography demonstrated thrombosis of the jugular, subclavian, and SVC veins and marked collateral vessels in the chest. Transient elastography yielded normal findings. A liver biopsy specimen showed a normal aspect of the liver, without fibrosis or liver cirrhosis. Presence of EV in a patient with chronic intestinal insufficiency may be related to collateral venous circulation associated with SVC thrombosis in the absence of portal hypertension. In this situation, an isolated intestinal graft is indicated.


Assuntos
Intestino Delgado/transplante , Intestinos/transplante , Síndrome do Intestino Curto/cirurgia , Síndrome da Veia Cava Superior/complicações , Colostomia , Humanos , Jejunostomia , Masculino , Pessoa de Meia-Idade , Nutrição Parenteral Total , Deficiência de Proteína S/complicações , Síndrome do Intestino Curto/complicações , Listas de Espera
9.
Clin Nutr ; 29(2): 154-9, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-20060626

RESUMO

Chronic diseases as well as aging are frequently associated with deterioration of nutritional status, loss muscle mass and function (i.e. sarcopenia), impaired quality of life and increased risk for morbidity and mortality. Although simple and effective tools for the accurate screening, diagnosis and treatment of malnutrition have been developed during the recent years, its prevalence still remains disappointingly high and its impact on morbidity, mortality and quality of life clinically significant. Based on these premises, the Special Interest Group (SIG) on cachexia-anorexia in chronic wasting diseases was created within ESPEN with the aim of developing and spreading the knowledge on the basic and clinical aspects of cachexia and anorexia as well as of increasing the awareness of cachexia among health professionals and care givers. The definition, the assessment and the staging of cachexia, were identified as a priority by the SIG. This consensus paper reports the definition of cachexia, pre-cachexia and sarcopenia as well as the criteria for the differentiation between cachexia and other conditions associated with sarcopenia, which have been developed in cooperation with the ESPEN SIG on nutrition in geriatrics.


Assuntos
Caquexia/diagnóstico , Sarcopenia/diagnóstico , Envelhecimento , Anorexia/complicações , Composição Corporal , Caquexia/complicações , Consenso , Diagnóstico Diferencial , Diagnóstico Precoce , Humanos , Força Muscular , Avaliação Nutricional , Sobrepeso/complicações , Sarcopenia/etiologia , Índice de Gravidade de Doença , Terminologia como Assunto
10.
Clin Nutr ; 28(5): 484-91, 2009 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-19573957

RESUMO

BACKGROUND & AIMS: Malnutrition is a known risk factor for the development of complications in hospitalised patients. We determined whether eating only fractions of the meals served is an independent risk factor for mortality. METHODS: The NutritionDay is a multinational one-day cross-sectional survey of nutritional factors and food intake in 16,290 adult hospitalised patients on January 19th 2006. The effect of food intake and nutritional factors on death in hospital within 30 days was assessed in a competing risk analysis. RESULTS: More than half of the patients did not eat their full meal provided by the hospital. Decreased food intake on NutritionDay or during the previous week was associated with an increased risk of dying, even after adjustment for various patient and disease related factors. Adjusted hazard ratio for dying when eating about a quarter of the meal on NutritionDay was 2.10 (1.53-2.89); when eating nothing 3.02 (2.11-4.32). More than half of the patients who ate less than a quarter of their meal did not receive artificial nutrition support. Only 25% patients eating nothing at lunch receive artificial nutrition support. CONCLUSION: Many hospitalised patients in European hospitals eat less food than provided as regular meal. This decreased food intake represents an independent risk factor for hospital mortality.


Assuntos
Inquéritos sobre Dietas , Dieta , Serviço Hospitalar de Nutrição/estatística & dados numéricos , Mortalidade Hospitalar , Apoio Nutricional/estatística & dados numéricos , Idoso , Índice de Massa Corporal , Estudos Transversais , Europa (Continente) , Feminino , Humanos , Pacientes Internados/estatística & dados numéricos , Tempo de Internação , Masculino , Pessoa de Meia-Idade , Estado Nutricional , Razão de Chances , Fatores de Risco , Análise de Sobrevida , Redução de Peso
11.
Bull Cancer ; 96(6): 647-58, 2009 Jun.
Artigo em Francês | MEDLINE | ID: mdl-19457755

RESUMO

One million people worldwide are affected by colorectal cancer (CRC) every year, resulting in 500,000 deaths. Incidence rate varies widely according to areas. It has been much more common in high-income countries. This trend begins to be reversed, with a stabilization of incidence rates in high-income countries and a dramatic increase in developing regions. CRC increase seems to overlap with the increasing level of urbanization in the latter. In the eighties, Doll and Peto already reported that 80% of cancer mortality was avoidable, particularly for CRC for which environmental influence is dominating. Observational studies have reported that migrants tended to reach similar CRC incidence levels that those of natives in the host country. An estimated 60% drop of all CRC cases could be obtained provided eating habits are modified, since these seem to be the main cause of incidence variations. Over the last ten years, many epidemiological studies and meta-analyses have been conducted. However, this abundant literature gave contradictory results. Therefore, in 1997, two groups of experts: the World Cancer Research Fund (WCRF) and the American Institute of Cancer Research (AICR), considered drafting a report on the correlation between diet and cancer a necessity. This systematic literature review, updated in 2007, established that red meat, processed meat and alcohol increase the risk of CRC. Conversely fibers, milk and calcium probably protect against CRC. Considering the most important prospective studies, randomised trials and the 2nd WCRF's report, our article aims at reviewing the evidences about diet and CRC.


Assuntos
Neoplasias Colorretais/etiologia , Comportamento Alimentar , Consumo de Bebidas Alcoólicas/efeitos adversos , Animais , Cálcio da Dieta/uso terapêutico , Bovinos , Neoplasias Colorretais/epidemiologia , Neoplasias Colorretais/prevenção & controle , Laticínios , Países Desenvolvidos , Países em Desenvolvimento , Frutas , Humanos , Carne/efeitos adversos , Verduras , Vitamina D/uso terapêutico
12.
Clin Nutr ; 28(4): 461-6, 2009 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-19464772

RESUMO

Older subjects are at increased risk of partial or complete loss of independence due to acute and/or chronic disease and often of concomitant protein caloric malnutrition. Nutritional care and support should be an indispensable part of their management. Enteral nutrition is always the first choice for nutrition support. However, when patients cannot meet their nutritional requirements adequately via the enteral route, parenteral nutrition (PN) is indicated. PN is a safe and effective therapeutic procedure and age per se is not a reason to exclude patients from this treatment. The use of PN should always be balanced against a realistic chance of improvement in the general condition of the patient. Lower glucose tolerance, electrolyte and micronutrient deficiencies and lower fluid tolerance should be assumed in older patients treated by PN. Parenteral nutrition can be administered either via peripheral or central veins. Subcutaneous administration is also a possible solution for basic hydration of moderately dehydrated subjects. In the terminal, demented or dying patient the use of PN or hydration should only be given in accordance with other palliative treatments.


Assuntos
Geriatria , Desnutrição/terapia , Nutrição Parenteral , Atividades Cotidianas , Idoso , Idoso de 80 Anos ou mais , Contraindicações , Nutrição Enteral , Geriatria/normas , Serviços de Assistência Domiciliar , Assistência Domiciliar , Instituição de Longa Permanência para Idosos , Humanos , Casas de Saúde , Estado Nutricional , Nutrição Parenteral/efeitos adversos , Nutrição Parenteral/normas , Qualidade de Vida
15.
Plant Dis ; 90(7): 869-876, 2006 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-30781023

RESUMO

Trials were conducted in orchards near Chico, CA and microplots near Parlier, CA to examine symptoms and control measures for a replant disease (RD) on almond (Prunus dulcis). In the orchard trials, areas with a recent history of severe RD were cleared, given soil fumigation treatments in the fall, and replanted with almond trees on various rootstocks the following winter. The replants in nonfumigated soil developed severe RD (stunting, wilting, chlorosis, defoliation) by the following summer, while those in most fumigated treatments remained healthy. Trees in nonfumigated soil developed smaller trunk diameters and fewer healthy roots ≤1 mm diameter, compared with the healthy trees. Almond developed RD on all rootstocks evaluated (Marianna 2624, Lovell, and Nemaguard), but the trees on Marianna 2624 were the most severely affected. Pre-plant tree-site (spot) fumigation treatments with methyl bromide (MB), chloropicrin (CP), 1,3-dichloropropene (1,3-D), 1,3-D + CP, iodomethane, and iodomethane + CP all prevented severe RD. Broadcast soil fumigation with CP also was effective, but broadcast MB and 1,3-D were ineffective. In microplots filled with RD-conducive soil, CP was more potent than MB for prevention of RD on Nemaguard peach. There was no association between nematodes and RD in orchard or microplot trials. The RD apparently was mediated by a biological agent(s) other than nematodes and can be prevented by appropriate fumigation with CP or other MB alternatives.

16.
Emerg Med J ; 22(7): 473-7, 2005 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-15983080

RESUMO

OBJECTIVE: To describe the emergency department (ED) management of isolated mild traumatic brain injury (TBI) in the USA and to examine variation in care across age and insurance types. METHODS: A secondary analysis of ED visits for isolated mild TBI in the National Hospital Ambulatory Medical Care Survey 1998-2000 was performed. Mild TBI was defined by International Classification of Diseases, 9th Revision, Clinical Modification (ICD-9) codes for skull fracture, concussion, intracranial injury (unspecified), and head injury (unspecified). Available ED care variables were analysed by patient age and insurance categories using multivariate logistic regression. RESULTS: The incidence of isolated mild TBI cases attending ED was 153,296 per year, or 56.4/100,000 people. Of the patients with isolated mild TBI, 44.3% underwent computed tomography, 23.9% underwent other non-extremity, non-chest x rays, 17.1% received wound care and 14.1% received intravenous fluids. However, only 43.8% had an assessment of pain. Of those with documented pain, only 45.5% received analgesics in the ED. Nearly 38% were discharged without recommendations for specific follow up. Several aspects of ED care varied by age but not by insurance type. CONCLUSION: Substantial ED resources are devoted to the care of isolated mild TBI. The present study identified deficiencies in and variation around several important aspects of ED care. The development of guidelines specific for mild TBI could reduce variation and improve emergency care for this injury.


Assuntos
Lesões Encefálicas/terapia , Serviço Hospitalar de Emergência , Adolescente , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Analgésicos/administração & dosagem , Lesões Encefálicas/diagnóstico , Lesões Encefálicas/epidemiologia , Criança , Pré-Escolar , Feminino , Pesquisas sobre Atenção à Saúde , Hospitalização/estatística & dados numéricos , Humanos , Incidência , Lactente , Recém-Nascido , Masculino , Pessoa de Meia-Idade , Alta do Paciente , Prática Profissional/estatística & dados numéricos , Estados Unidos/epidemiologia
17.
Aviat Space Environ Med ; 74(4): 342-7, 2003 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-12688453

RESUMO

BACKGROUND: Loss of muscle strength and cross-sectional area is a well-recognized consequence of spaceflight. Existing countermeasures have not been fully effective in preventing muscle weakness and atrophy in microgravity. Resistance exercise programs that consist of both eccentric and concentric actions have resulted in strength and muscle mass gains in ground-based studies. HYPOTHESES: 1) A concentric/eccentric combination exercise regimen (with a bias of either concentric or eccentric exercise) will result in a greater strength gain than concentric exercise alone; and 2) an eccentrically biased regimen will result in the greatest strength gain of all. METHODS: The 31 subjects were randomly assigned to one of three isokinetic exercise groups (CON-ECC: 75% concentric and 25% eccentric; ECC-CON: 75% eccentric and 25% concentric; CON: 100% concentric); each subject trained the right leg 3 d per week for 5 wk. Pre- and post-training isokinetic concentric/ eccentric strength tests and DEXA scans assessed changes in muscle strength and/or mass. RESULTS: All three groups showed an increase in eccentric muscle strength with the CON group showing the smallest gain (10.1%). Significantly larger gains were noted in the two combination groups (19.5%, 18.1%; p < 0.042), with the largest gains in eccentric strength. No significant change was noted in muscle mass. CONCLUSIONS: A resistance exercise protocol which includes eccentric as well as concentric exercise, particularly when the eccentric exercise is emphasized, appears to result in greater strength gains than concentric exercise alone. Findings suggest eccentric exercise may be an important component of the in-flight resistance exercise protocol for long-duration spaceflight.


Assuntos
Exercício Físico/fisiologia , Músculo Esquelético/fisiologia , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Debilidade Muscular/prevenção & controle , Atrofia Muscular/prevenção & controle , Estudos Prospectivos
18.
Gut ; 51(3): 434-9, 2002 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-12171970

RESUMO

BACKGROUND AND AIMS: Fatigue is a frequent and disabling symptom reported by patients with chronic hepatitis C (CHC). Its mechanism is poorly understood. Recent attention has focused on the role of leptin and energy expenditure in CHC. Our aims were to analyse fatigue in CHC and to determine its relationship with disease activity, resting energy expenditure (REE), circulating leptin, and tumour necrosis factor alpha (TNF-alpha). METHODS: Seventy eight CHC patients, 22 healthy controls, and 13 primary biliary cirrhosis (PBC) patients underwent measurements of REE, body composition, leptin, and TNF-alpha. All subjects completed the fatigue impact scale (FIS) questionnaire. A liver biopsy and viral load measurements were performed in all patients. RESULTS: Thirty eight of 78 CHC patients considered fatigue the worst or initial symptom of their disease. The fatigue score of patients was significantly higher than that of controls (53.2 (40.1) v 17.7 (16.9); p<0.0001) and was more pronounced in females (p=0.003). Leptin was increased significantly in CHC patients compared with controls (15.4 (20.7) v 6.4 (4.1) ng/ml; p<0.05). In CHC patients, the fatigue score correlated significantly with leptin corrected for fat mass (r=0.30, p=0.01). This correlation increased when the physical domain of fatigue was included (r=0.39, p=0.0009). Furthermore, a similar positive correlation was found in PBC patients (r=0.56, p=0.04). No correlation was found between fatigue and age, REE, liver function tests, viral load, or the METAVIR score in CHC patients. CONCLUSIONS: Fatigue is present in CHC patients and is more pronounced in females. The FIS questionnaire is clinically relevant and may be useful for future therapeutic trials aimed at reducing fatigue. Fatigue may be partly mediated by leptin.


Assuntos
Fadiga/sangue , Hepatite C Crônica/sangue , Leptina/sangue , Cirrose Hepática Biliar/sangue , Adulto , Composição Corporal , Fadiga/etiologia , Feminino , Hepatite C Crônica/complicações , Humanos , Cirrose Hepática Biliar/etiologia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Índice de Gravidade de Doença , Inquéritos e Questionários , Fator de Necrose Tumoral alfa/análise
19.
J Appl Physiol (1985) ; 91(5): 2374-83, 2001 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-11641383

RESUMO

This minireview provides an overview of known and potential gender differences in physiological responses to spaceflight. The paper covers cardiovascular and exercise physiology, barophysiology and decompression sickness, renal stone risk, immunology, neurovestibular and sensorimotor function, nutrition, pharmacotherapeutics, and reproduction. Potential health and functional impacts associated with the various physiological changes during spaceflight are discussed, and areas needing additional research are highlighted. Historically, studies of physiological responses to microgravity have not been aimed at examining gender-specific differences in the astronaut population. Insufficient data exist in most of the discipline areas at this time to draw valid conclusions about gender-specific differences in astronauts, in part due to the small ratio of women to men. The only astronaut health issue for which a large enough data set exists to allow valid conclusions to be drawn about gender differences is orthostatic intolerance following shuttle missions, in which women have a significantly higher incidence of presyncope during stand tests than do men. The most common observation across disciplines is that individual differences in physiological responses within genders are usually as large as, or larger than, differences between genders. Individual characteristics usually outweigh gender differences per se.


Assuntos
Caracteres Sexuais , Voo Espacial , Exercício Físico/fisiologia , Feminino , Humanos , Masculino , Estados Unidos , United States National Aeronautics and Space Administration , Ausência de Peso/efeitos adversos
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