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Factors associated with refeeding hypophosphatemia in adolescents and young adults hospitalized with anorexia nervosa
Author(s) -
Kells Meredith,
Gregas Matt,
Wolfe Barbara E.,
Garber Andrea K.,
KellyWeeder Susan
Publication year - 2022
Publication title -
nutrition in clinical practice
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.725
H-Index - 71
eISSN - 1941-2452
pISSN - 0884-5336
DOI - 10.1002/ncp.10772
Subject(s) - hypophosphatemia , medicine , refeeding syndrome , anorexia nervosa , body mass index , weight gain , logistic regression , odds ratio , retrospective cohort study , pediatrics , malnutrition , body weight , eating disorders , psychiatry
Background Refeeding hypophosphatemia (RH) in individuals with anorexia nervosa (AN) is a potentially fatal complication of nutrition restoration; yet, little is known about risk. This retrospective cohort study examined factors found in hospitalized youth with AN that may contribute to RH. Methods We reviewed medical records of 300 individuals diagnosed with AN admitted between the years of 2010 and 2016. Logistic regression examined factors associated with RH. Multivariate regression examined factors associated with phosphorus nadir. Results For 300 participants, the mean (SD) age was 15.5 (2.5) years, 88.3% were White, and 88.3% were female. Participants lost an average of 11.3 (9.7) kg of body weight and were 82% (12.1) of median body mass index (BMI). Age ( P = .022), nasogastric (NG) tube feeding ( P = .054), weight gain ( P = .003), potassium level (P = .001), and magnesium level ( P = .024) were contributors to RH. Odds of RH were 13.7 times higher for each unit reduction in magnesium, 9.2 times higher for each unit reduction in potassium, three times higher in those who received NG feeding, 1.5 times higher for each kg of weight gain, and 1.2 times higher for each year of age. Regarding phosphorus nadir, serum magnesium level ( P < .001) and admission BMI ( P = .002) contributed significantly. Conclusion The results indicate that age, NG feeding, weight gain, electrolyte abnormalities, and BMI on admission are potential indicators of the development of RH in youth. This study identifies clinical risk factors associated with RH and may guide further investigation.