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Nutrición Hospitalaria

On-line version ISSN 1699-5198Print version ISSN 0212-1611


COMMENTZ-ABARZA, Nicole et al. Nutritional recovery of underweight adolescents with anorexia nervosa: analysis of a hospital protocol. Nutr. Hosp. [online]. 2023, vol.40, n.1, pp.13-18.  Epub Apr 17, 2023. ISSN 1699-5198.


anorexia nervosa (AN) is a severe psychiatric pathology that has one of the highest mortality rates among mental illnesses, estimated at 5.1 deaths per 1,000 people/year, and is associated with high comorbidity, both psychiatric and somatic.


to characterize hospitalized adolescents and their nutritional rehabilitation using a standardized protocol.


a descriptive-retrospective study of adolescent patients hospitalized at the San Carlos of Apoquindo Clinic with a diagnosis of AN, hemodynamically stable and without refeeding syndrome criteria, between 2015 and 2021. Epidemiological, clinical, and nutritional data of the patients were analyzed.


of 46 patients studied, 37 were female; the average length of stay was 45.4 (SD ± 36.1) days; 53.8 % of the patients had mood disorder as psychiatric comorbidity, and the most common personality trait was obsessive-compulsive (36.9 %); the most frequent somatic comorbidity was thyroid pathology (19.2 %). The initial oral caloric intake was 1467 (SD ± 479) kcal, with an average weekly increase of 400 kcal, reaching 2430 (SD ± 457) kcal at discharge. An average percentage median body mass index (BMI%) of 7.8 % (SD ± 6.1) was obtained.


this is the first study done in Chilean adolescents hospitalized with AN that describes nutritional rehabilitation and length of stay.

Keywords : Eating disorder; Anorexia nervosa; Hospitalized adolescents; Rehabilitation; Enteral nutrition.

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