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. 2023 Dec;33(12):4137-4146.
doi: 10.1007/s11695-023-06907-6. Epub 2023 Nov 2.

Malnutrition Following One-Anastomosis Gastric Bypass: a Systematic Review

Nanda Bandlamudi  1 , Guy Holt  2 , Yitka Graham  3   4   5   6 , Mary O'Kane  7 , Rishi Singhal  8 , Chetan Parmar  9 , Nasser Sakran  10   11 , Kamal Mahawar  3   4 , Sjaak Pouwels  12   13 , Sudha Potluri  14 , Brijesh Madhok  2
Affiliations

Malnutrition Following One-Anastomosis Gastric Bypass: a Systematic Review

Nanda Bandlamudi et al. Obes Surg. 2023 Dec.

Abstract

Severe malnutrition following one-anastomosis gastric bypass (OAGB) remains a concern. Fifty studies involving 49,991 patients were included in this review. In-hospital treatment for severe malnutrition was needed for 0.9% (n = 446) of patients. Biliopancreatic limb (BPL) length was 150 cm in five (1.1%) patients, > 150 cm in 151 (33.9%), and not reported in 290 (65%) patients. OAGB was revised to normal anatomy in 126 (28.2%), sleeve gastrectomy in 46 (10.3%), Roux-en-Y gastric bypass in 41 (9.2%), and shortening of BPL length in 17 (3.8%) patients. One hundred fifty-one (33.8%) patients responded to treatment; ten (2.2%) did not respond and was not reported in 285 (63.9%) patients. Eight (0.02%) deaths were reported. Standardisation of the OAGB technique along with robust prospective data collection is required to understand this serious problem.

Keywords: Afferent loop syndrome; Loop gastric bypass; MGB; Malnutrition; Mini gastric bypass; Nutritional deficiency; OAGB; Omega loop gastric bypass; One-anastomosis gastric bypass; Protein calorie deficiency.

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