Journal
INFLAMMATORY BOWEL DISEASES
Volume 19, Issue 11, Pages 2411-2422Publisher
LIPPINCOTT WILLIAMS & WILKINS
DOI: 10.1097/MIB.0b013e31829ed855
Keywords
anemia; inflammatory bowel disease; pediatrics; exclusive enteral nutrition
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Funding
- Greek State Scholarship Foundation
- Hellenic Foundation of Gastroenterology Nutrition
- Barr Endowment Fund
- Catherine McEwan Foundation
- Yorkhill IBD fund
- NHS
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Background: Anemia is poorly studied in pediatric inflammatory bowel disease. This study explored the epidemiology and associated factors of anemia at diagnosis, after 1 year, and during treatment with exclusive enteral nutrition (EEN). Methods: Three cohorts were included: (1) a representative population of newly diagnosed inflammatory bowel disease children (n = 184); (2) patients currently receiving care with data available at diagnosis (n = 179) and after 1 year (n = 139); and (3) 84 children treated with EEN. Results: At diagnosis, 72% were anemic. Abnormal inflammatory markers were more common in Crohn's disease with severe anemia (severe versus no anemia [%]: raised C-reactive protein; 89% versus 48%; suboptimal albumin; 97% versus 29%; P < 0.002). Anemic children with Crohn's disease had shorter diagnosis delay and lower BMI than nonanemic patients (severe versus mild versus no anemia, median [interquartile range]; diagnosis delay [months]: 3 [3.9] versus 6 [10] versus 8 [18], P < 0.001; BMI z score [SD]: -1.4 [1.4] versus -1.3 [1.5] versus -0.2 [1.4], P = 0.003). Extensive colitis was associated with severe anemia in ulcerative colitis. The proportion of severely anemic patients decreased from 34% to 9% and mild anemia doubled at 1 year. After EEN, severe anemia decreased (32% to 9%; P < 0.001) and the hemoglobin concentration increased by 0.75 g/dL. This was observed only after 8 weeks of treatment. Disease improvement and low hemoglobin at EEN initiation but not weight gain were associated with hemoglobin improvement. Conclusions: Anemia is high at diagnosis and follow-up and should receive more attention from the clinical team; however, the focus should remain suppression of inflammatory process in active disease.
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