RESUMO
BACKGROUND: Nutritional rehabilitation for patients with anorexia nervosa involves balancing the need for weight gain whilst mitigating the risk of refeeding syndrome. Graded caloric increases and restriction of calories from carbohydrate have been used to minimise the risk of developing refeeding hypophosphatemia. There is little evidence to support the recommended nutrient composition, specifically the recommended carbohydrate intake that is safe in this population. The aim of this pilot study was to compare the effect of a low and a standard carbohydrate feeding protocol on serum phosphate levels in children and adolescents with anorexia nervosa. METHODS: A pilot study of 23 children and adolescents with anorexia nervosa admitted for medical stabilisation to the adolescent ward of a tertiary hospital was undertaken. Participants were commenced on an oral feeding protocol and were randomly allocated to isocaloric meal plans that were either low carbohydrate (< 40% total energy from carbohydrate) or standard carbohydrate (50-60% total energy from carbohydrate). Serum phosphate levels were monitored daily across the first week and twice weekly thereafter. Clinical status, including weight gain, was monitored throughout admission. RESULTS: 52% (n = 12) of participants were allocated to the low carbohydrate group and 48% (n = 11) were allocated to the standard carbohydrate group. No patients in either of the diet groups developed refeeding hypophosphatemia in the first seven days of admission. Weight gain during the first week was significantly higher in the standard carbohydrate diet (1.4 kg/wk ± 0.5) compared to the low carbohydrate diet (0.6 kg/wk ± 0.9), p value 0.03. Participants from both diet groups were largely orally fed with less than 10% of the total number of meals and/or snacks across both groups provided as nutrition supplement drinks, either orally or enterally. CONCLUSION: This pilot study supports that a standard carbohydrate intake (providing 50-60% of total energy from carbohydrate) optimises nutritional rehabilitation without increasing the risk of refeeding hypophosphatemia in adolescent inpatients with anorexia nervosa. CTN: ACTRN12621000300875. Plain English Summary: People with eating disorders who are underweight or malnourished, such as patients with anorexia nervosa, are at risk of refeeding syndrome when they receive treatment and return to regular eating. Refeeding syndrome may cause fluid and electrolyte shifts. This can occur as a result of the reintroduction of carbohydrates, and can have potentially life-threatening consequences if not managed appropriately. Refeeding hypophosphatemia is one of the early markers of refeeding syndrome. This study compared patients who were provided a low carbohydrate diet (40% total energy from carbohydrate) to those who were provided a standard carbohydrate diet (50-60% total energy from carbohydrate) to see if patients from either group were more at risk of developing refeeding syndrome. No patients in either of the diet groups developed refeeding hypophosphatemia. This pilot study may help to ensure that when patients get treated for their eating disorder in hospital, they can return to a normal diet as soon as possible with close medical monitoring.
RESUMO
AIM: The newly formed Australian Paediatric Research Network (APRN) aims to facilitate general paediatricians' participation in research in secondary care settings. This (its first) project aimed to identify Australian paediatricians' top research priorities and preferred research designs. METHODS: All Australian general paediatricians were invited into a national Delphi process survey. In Stage 1, they were asked 'Thinking about your clinical practice, what are the most important research questions which need addressing?'. Using qualitative methods, a 'top 20' list of the most common, feasible research questions was generated. In Stage 2, respondents prioritised these 'top 20' research questions in terms of perceived importance to their practice, and rated their interest in participating in various types of research. RESULTS: A total of 685 (68%) of 1006 paediatricians completed the baseline survey, with 209 paediatricians contributing 430 Stage 1 research questions. Of these, 128 (30%) had not been addressed in the literature and were researchable in the secondary care outpatient setting. The top five questions ranked in Stage 2 by 348 paediatricians were obesity management (two questions), long-term ADHD educational outcomes, autism spectrum outcomes, and prophylactic antibiotics in preventing urinary tract infections. Paediatricians were willing to participate in research designs, including longitudinal research (75%) and randomised trials (64%). CONCLUSIONS: Australian paediatricians are interested in research, and their ideas can provide direction for APRN and potentially other networks in Australia. Many of the questions generated could not be easily answered by traditional biomedical and clinical research methods, highlighting the potential benefit of practice-based research networks.
