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Energy balance in Alzheimer's disease.

Alzheimer s disease is the most frequent cause of dementia in elderly people and it is one of the leading causes of death among older individuals. weight loss is a frequent clinical finding in Alzheimer s disease patients, and it is actually listed as a symptom consistent with the diagnosis of Alzheimer s disease, but its significance has not been clearly understood until now. This review examines the role of the components of energy balance in determining weight loss in AD patients, on the basis of data collected from the literature. We also considered the possible causes of anorexia in AD patients. In the last years many researchers investigated the possible role of abnormally high energy expenditure, or low energy intakes, or both, to explain weight loss in these patients. Studies on energy intake, energy expenditure and body composition in AD patients have been reviewed. The results of published studies do not seem to support the hypothesis of an hypermetabolic state or inadequate energy intake in AD patients, but further studies, with greater samples are necessary in the future to investigate weight loss in AD patients. A better understanding of this finding could be important to obtain the maximal lifespan of demented patients.

Development and validation of a hospital screening tool for malnutrition: the short nutritional assessment questionnaire (SNAQ).

OBJECTIVE: For the early detection and treatment of malnourished hospital patients no valid screening instrument for the Dutch language exists. Calculation of percentage weight loss and body mass index (BMI) by the nurse at admission to the hospital appeared to be not feasible. Therefore, the short, nutritional assessment questionnaire (SNAQ), was developed. RESEARCH, DESIGN AND METHODS: Two hundred and ninety one patients on the mixed internal and surgery/oncology wards of the VU University medical center were screened on nutritional status and classified as well nourished (<5% weight loss in the last 6 months and BMI>18.5), moderately malnourished (5-10% weight loss in the last 6 months and BMI>18.5) or severely malnourished (>10% weight loss in the last 6 months or >5% in the last month or BMI<18.5). All patients were asked 26 questions related to eating and drinking difficulties, defecation, condition and pain. Odds ratio, binary and multinomial logistic regression were used to determine the set of questions that best predicts the nutritional status. Based on the regression coefficient a score was composed to detect moderately (2 points) and severely (3 points) malnourished patients. The validity, the nurse-nurse reproducibility and nurse-dietitian reproducibility was tested in another but similar population of 297 patients. RESULTS: The questions 'Did you lose weight unintentionally?'. 'Did you experience a decreased appetite over the last month?' and 'Did you use supplemental drinks or tube feeding over the last month?' were most predictive of malnutrition. The instrument proved to be valid and reproducible. CONCLUSION: SNAQ is an easy, short, valid and reproducible questionnaire for early detection of hospital malnutrition.

Laparoscopic Swedish adjustable gastric banding: a five-year prospective study.

BACKGROUND: Laparoscopic adjustable gastric banding is a popular bariatric operation in Europe. However, the long-term complication rate and weight loss are still unclear. METHODS: 824 patients underwent a laparoscopic Swedish Adjustable Gastric Banding (SAGB) in a 5-year period. Preoperative data, postoperative weight loss and long-term complications were prospectively obtained for analysis. RESULTS: Mean age of the 824 patients was 43 +/- 1 years, with mean preoperative BMI 43 +/- 1 kg/m(2). No intra- or postoperative death occurred in the first 30 postoperative days. Intraoperative conversion rate was 5.2%. Peri-operative complication rate was 1.2%. 97% of the patients were available for follow-up (maximum 5 years). Long-term complications occurred in 191 patients (23.2%). 135 complications (16.4%) were related to the band, and 56 (6.8%) to the access-port or to the tube. Mean excess weight loss was 30, 41, 49, 55 and 57 % after 1, 2, 3, 4 and 5 years respectively. 82.9% of the patients obtained >50% EWL after initial treatment. CONCLUSIONS: The results of this study suggest that laparoscopic SAGB can achieve an effective weight loss, with an acceptable mortality and morbidity rate.

Do psychosocial variables predict weight loss or mental health after obesity surgery? A systematic review.

OBJECTIVE: The objective of this study was to present a systematic review of psychological and psychosocial predictors of weight loss and mental health after bariatric surgery. This systematic review included all controlled and noncontrolled trials of the last 2 decades with either a retrospective or prospective design and a follow-up period of at least 1 year. RESEARCH METHODS AND PROCEDURES: The relevant literature was identified by a search of computerized databases. All articles published in English and German between 1980 and 2002 were reviewed. RESULTS: Using the above inclusion/exclusion criteria, 29 articles were identified focusing on psychosocial predictors of weight loss and mental health after obesity surgery. DISCUSSION: Personality traits have no predictive value for the postoperative course of weight or mental state. Apart from serious psychiatric disorders including personality disorders, psychiatric comorbidity seems to be of more predictive value for mental and physical well-being as two essential aspects of quality of life than for weight loss postsurgery. However, depressive and anxiety symptoms as correlates of psychological stress with regard to obesity seem to be positive predictors of weight loss postsurgery. The severity of the symptoms or the disorder is more relevant for the outcome of obesity surgery than the specificity of the symptoms. It is also not solely the consumption of distinct "forbidden" foods, such as sweets or soft drinks, but rather a general hypercaloric eating behavior, either as an expression of the patient's inadequate compliance or a dysregulation in energy balance, which is associated with a poor weight loss postsurgery.

 

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