Changes in Body Composition and Biochemical Parameters Following Laparoscopic One Anastomosis Gastric Bypass: 1-Year Fol
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ORIGINAL CONTRIBUTIONS
Changes in Body Composition and Biochemical Parameters Following Laparoscopic One Anastomosis Gastric Bypass: 1-Year Follow-Up Negar Zamaninour 1 & Abdolreza Pazouki 1,2 & Mohammad Kermansaravi 1,2 & Atefeh Seifollahi 3 & Ali Kabir 1 Received: 15 April 2020 / Revised: 30 July 2020 / Accepted: 31 July 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract Background/Aim Little data is available on body composition and biochemical parameter changes after one anastomosis gastric bypass (OAGB) surgery. This study was therefore conducted to assess body composition and biochemical parameter changes in patients who underwent OAGB. The relationship between the percentage of total weight loss (%TWL) with percentage changes in body composition and biochemical parameters was measured in the first year after surgery. Materials and Methods This retrospective study was carried out on 363 patients (mean age 39.93 ± 9.98 years) who underwent OAGB between January 2011 and November 2018. Anthropometric, body composition and biochemical measurements were recorded before and 1 year after surgery. For paired data, a paired sample t test or Wilcoxon test was used. Spearman or Pearson correlation test was used to evaluate the relationship between % TWL and changes in body composition and biochemical parameters. Results The average %TWL at 1 year following surgery was 35.72 ± 6.85. Fat and muscle tissue and also serum levels of glycemic parameters, low density lipoprotein, triglycerides (TG), total cholesterol, zinc, albumin, hemoglobin, hematocrit, and platelet had decreased a year after OAGB (P < 0.05). The postoperative levels of HDL-c, vitamins D, B12, and folic acid were dramatically higher than the preoperative values. Higher %TWL significantly correlated to greater decreases in body fat, muscle mass, and serum TG at 1 year post-surgery, compared to preoperative values. Conclusion OAGB may be effective over a follow-up period of 1 year in achieving weight, fat mass reduction, and improved serum levels of glycemic parameters and lipid profiles. Keywords Gastric bypass . Bariatric surgery . Body composition . Nutritional status . Biochemical parameters
Introduction * Ali Kabir [email protected]; [email protected] Negar Zamaninour [email protected] Abdolreza Pazouki [email protected] Mohammad Kermansaravi [email protected] Atefeh Seifollahi [email protected] 1
Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Mansouri Alley, Niyayesh St.; Sattarkhan St, Tehran, Iran
2
Center of Excellence of European Branch, International Federation for Surgery of Obesity, Tehran, Iran
3
Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences (TUMS), Tehran, Iran
It is now widely acknowledged that one anastomosis-mini gastric bypass (OAGB-MGB) surgery is an effective treatment for morbid obesity and its related complications [1, 2]. Reduced food intake and absorption, as well as cha
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