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Prevalence of anemia and related deficiencies 10 years after gastric bypass: a retrospective study
Örebro University, School of Health and Medical Sciences, Örebro University, Sweden. Division of Internal Medicine, Department of Endocrinology, Örebro University Hospital, Örebro, Sweden .
Örebro University Hospital. Division of Surgery.ORCID iD: 0000-0002-3644-3319
Department of Surgical Sciences, Uppsala University, Uppsala, Sweden .
Department of Surgical Sciences, Uppsala University, Uppsala, Sweden .
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2015 (English)In: Obesity Surgery, ISSN 0960-8923, E-ISSN 1708-0428, Vol. 25, no 6, 1019-1023 p.Article in journal (Refereed) Published
Abstract [en]

Bariatric surgery has gained wide acceptance as treatment for severe obesity and is associated with decreased overall mortality. The aims of this study were to evaluate the prevalence of anemia long term after Roux-en-Y gastric bypass (RYGB) and to search for factors predicting anemia.

All 745 patients who underwent RYGB between 1993 and 2003 at either A-rebro or Uppsala University Hospital and who were living in Sweden were invited to participate by providing a fasting blood sample and completing a questionnaire about their health status. Full blood count, serum iron, transferrin, vitamin B-12, and folic acid were determined.

Follow-up was completed in 431 patients (58 %) with mean age 51.3 +/- 10 years. Of all patients, 27 % had anemia postoperatively and related deficiencies; iron, folic acid, and vitamin B-12 were seen in 20, 12, and 2 %, respectively. There was no correlation between anemia and sex, follow-up time, 25-OH vitamin D level, and preoperative or postoperative BMI. An inverse correlation was found between anemia and regular medical checkups concerning gastric bypass surgery.

Twenty-seven percent of patients had anemia more than 10 years after RYGB. Anemia does not seem to progress with time and was less common in patients with regular medical checkups. Thus, improved long-term follow-up is needed.

Place, publisher, year, edition, pages
Springer, 2015. Vol. 25, no 6, 1019-1023 p.
Keyword [en]
Gastric bypass, Anemia, Iron deficiency, Long-termfollow-up
National Category
Surgery
Research subject
Surgery
Identifiers
URN: urn:nbn:se:oru:diva-44899DOI: 10.1007/s11695-014-1500-yISI: 000354216500010PubMedID: 25394588Scopus ID: 2-s2.0-84939978711OAI: oai:DiVA.org:oru-44899DiVA: diva2:821473
Note

Funding Agencies:

Örebro County Council

Uppsala-Örebro Regional Research Council RFR-32261

Available from: 2015-06-15 Created: 2015-06-15 Last updated: 2017-10-18Bibliographically approved

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Karefylakis, ChristosNäslund, IngmarRask, Eva
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School of Health and Medical Sciences, Örebro University, SwedenÖrebro University Hospital
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