{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,13]],"date-time":"2026-02-13T06:15:58Z","timestamp":1770963358744,"version":"3.50.1"},"reference-count":33,"publisher":"Springer Science and Business Media LLC","issue":"7","license":[{"start":{"date-parts":[[2025,1,20]],"date-time":"2025-01-20T00:00:00Z","timestamp":1737331200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"},{"start":{"date-parts":[[2025,1,20]],"date-time":"2025-01-20T00:00:00Z","timestamp":1737331200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0"}],"funder":[{"DOI":"10.13039\/501100005788","name":"Medical University of Vienna","doi-asserted-by":"crossref","id":[{"id":"10.13039\/501100005788","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Updates Surg"],"published-print":{"date-parts":[[2025,11]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background<\/jats:title>\n                    <jats:p>Metabolic\/bariatric surgery (MBS) remains the most effective and long-lasting treatment for obesity and its complications. Apart from any surgical complications, the often less obvious but possibly severe side-effects of nutritional deficiencies have become of interest in recent years. OAGB is known to come with the need for thorough supplementation.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Setting<\/jats:title>\n                    <jats:p>Retrospective study; university-hospital based.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Aim<\/jats:title>\n                    <jats:p>Assessing nutritional issues and their management in a real-life cohort of patients undergoing OAGB.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Patients that underwent OABG between 01\/2018 and 08\/2019 were retrospectively assessed. Laboratory values (gained from electronic patients charts) were analyzed for nutritional issues (parathyroid hormone, vitamin A, E, D, B12, folic acid, albumin, ferritin, iron, and transferrin saturation) as well as postoperative complications and reoperations. Furthermore, weight development, improvement\/remission of obesity-related complications, and regular intake of multivitamin supplementation (MVS) were assessed.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>120 patients underwent OAGB; 89 were female. A follow-up was available for 101 patients. Mean length of follow-up was 27.8\u2009\u00b1\u200920.9\u00a0months. OAGB led to a %TWL of 36.7\u2009\u00b1\u20099.5% and %EWL of 86.8\u2009\u00b1\u200925.5%. Preoperative deficiencies were vitamin D (53.3%), followed by folic acid (16.7%) and vitamin A (6.7%). During follow-up, every patient developed at least one deficiency, hypovitaminosis D and A were predominant (74.3% and 41.0%), and 31 suffered from folic acid deficiency (30.7%). Hypovitaminosis B12 and calcium deficiency was observed in three patients (2.9%). Although advised to, only 45.5% opted for the intake of specialized MVS, whereas 10% did not take any MVS at all. More than half of all patients (53.5%) took additional supplements. Nineteen patients underwent reoperations associated with the initial OAGB.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusion<\/jats:title>\n                    <jats:p>Two conclusions can be drawn: First, there is a general need for bypass patients to get assessed for a broad array of deficiencies over time. Second, MVS is essential for patients that had bypass surgery. Additionally, compliance needs to be promoted by educating patients as well as other treating physicians.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1007\/s13304-025-02094-4","type":"journal-article","created":{"date-parts":[[2025,1,20]],"date-time":"2025-01-20T13:57:44Z","timestamp":1737381464000},"page":"2023-2030","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Management of nutritional deficiencies following one anastomosis gastric bypass (OAGB): a single-center experience"],"prefix":"10.1007","volume":"77","author":[{"given":"J.","family":"Jedamzik","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L.","family":"Pedarnig","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"C.","family":"Bichler","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J.","family":"Eichelter","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M.","family":"Mairinger","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L.","family":"Gensthaler","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L.","family":"Nixdorf","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P.","family":"Richwien","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"N.","family":"Vock","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"F. 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Gerhard Prager reports educational grants from Medtronic and Novo Nordisk as well as speakers\u2019 fees by Medtronic.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflict of interest"}},{"value":"All procedures performed in studies involving human participants were in accordance with the ethical standards of the research committee of the Vienna Medical University (EK 1028\/2017) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. This article does not contain any studies with animals performed by any of the authors.","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Human and animal rights\/compliance with ethical standards"}},{"value":"Due to the pure retrospective character of this study, informed consent was not obtained from individual participants.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}}]}}