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Karimi Behnagh A, Abdolhosseini M, Abdollahi A, Banivaheb B, Kabir A. Laparoscopic small bowel length measurement: nonassociative nature of total small bowel length with anthropometric and clinical characteristics in patients undergoing bariatric surgery. Surg Obes Relat Dis 2024; 20:849-855. [PMID: 38729855 DOI: 10.1016/j.soard.2024.03.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 02/25/2024] [Accepted: 03/09/2024] [Indexed: 05/12/2024]
Abstract
BACKGROUND Small bowel length (SBL) may have an impact on the outcomes of bariatric surgeries, but it can be difficult to make a direct association between SBL and the safety and outcome of bariatric surgeries. OBJECTIVES To address this issue, we set out to devise a predictive model for SBL determination based on clinical and anthropometric variables. SETTING An academic tertiary medical center. METHODS Anthropometric and clinical data, including age, sex, height, weight, and past medical history, were collected upon enrollment. SBL was measured twice during the surgery using a marked grasper. In all cases, measurements were carried out by a single surgeon. To create a predictive model, a 2-step approach was employed. In the first step, linear regression was used to determine influential variables. In the second step, all variables with a P value < .2 were entered into a multivariate regression model. RESULTS Overall, 961 bariatric candidates were enrolled. The mean age of the participants was 40.08 years, and 77.5% (n = 745) were female. The mean SBL was 748.90 centimeters. There was a weak but statistically significant positive correlation between SBL with both weight and height. Our univariate linear model determined only anthropometric parameters as a predictor of SBL. The multivariate model also yielded that none of the entered parameters were shown to be accurate predictors of SBL. Moreover, only 4.3% of variances were explainable by this model. CONCLUSION Although we found a weak positive association between height and SBL, this association lacked clinical practicality.
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Affiliation(s)
- Arman Karimi Behnagh
- Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran
| | | | - Arash Abdollahi
- Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Behrooz Banivaheb
- Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Ali Kabir
- Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran.
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Slagter N, van der Laan L, de Heide LJM, Jutte EH, Kaijser MA, Damen SL, van Beek AP, Emous M. Effect of tailoring biliopancreatic limb length based on total small bowel length versus standard limb length in one anastomosis gastric bypass: 1-year outcomes of the TAILOR randomized clinical superiority trial. Br J Surg 2024; 111:znae219. [PMID: 39213130 PMCID: PMC11363871 DOI: 10.1093/bjs/znae219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2023] [Revised: 07/20/2024] [Accepted: 08/07/2024] [Indexed: 09/04/2024]
Abstract
BACKGROUND Tailoring the biliopancreatic limb length in one anastomosis gastric bypass is proposed as beneficial in retrospective studies, yet randomized trials are lacking. The aim of this double-blind, single-centre RCT was to ascertain whether tailoring biliopancreatic limb length based on total small bowel length (TSBL) results in superior outcomes after one anastomosis gastric bypass compared with a fixed 150 cm biliopancreatic limb length. METHODS Eligible patients, meeting International Federation for the Surgery of Obesity and Metabolic Disorders (IFSO) criteria for metabolic bariatric surgery, scheduled for primary one anastomosis gastric bypass surgery, and willing to be randomized, underwent TSBL measurement during surgery. When TSBL measurement was feasible, patients were randomly assigned to a standard 150 cm biliopancreatic limb length or a tailored biliopancreatic limb based on TSBL: TSBL less than 500 cm, biliopancreatic limb 150 cm; TSBL 500-700 cm, biliopancreatic limb 180 cm; and TSBL greater than 700 cm, biliopancreatic limb 210 cm. The primary outcome was percentage total weight loss at 5 years. RESULTS Between September 2020 and August 2022, 212 patients were randomized into the standard biliopancreatic limb group (105 patients) or the tailored biliopancreatic limb group (107 patients). The mean(s.d.) TSBL was 657(128) cm (range 295-1020 cm). In the tailored group, 150, 180, and 210 cm biliopancreatic limb lengths were applied to 8.4%, 53.3%, and 38.3% of patients respectively. The mean(s.d.) 1-year percentage total weight loss was 32.8(6.9)% in the standard group and 33.1(6.2)% in the tailored group (P = 0.787). Nutritional deficiencies and short-term complications showed no significant differences. CONCLUSION Tailoring biliopancreatic limb length based on TSBL is safe and feasible. One year after surgery, it is not superior to a standard biliopancreatic limb length of 150 cm in terms of percentage total weight loss. REGISTRATION NUMBER Dutch Trial Register, NL7945.
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Affiliation(s)
- Nienke Slagter
- Center for Obesity Northern Netherlands, Department of Bariatric and Metabolic Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands
- Department of Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands
- Postgraduate School of Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Lindsy van der Laan
- Center for Obesity Northern Netherlands, Department of Bariatric and Metabolic Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands
- Department of Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands
- Postgraduate School of Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Loek J M de Heide
- Center for Obesity Northern Netherlands, Department of Bariatric and Metabolic Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands
- Department of Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands
| | - Ewoud H Jutte
- Center for Obesity Northern Netherlands, Department of Bariatric and Metabolic Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands
- Department of Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands
| | - Mirjam A Kaijser
- Center for Obesity Northern Netherlands, Department of Bariatric and Metabolic Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands
- Department of Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands
| | - Stefan L Damen
- Center for Obesity Northern Netherlands, Department of Bariatric and Metabolic Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands
- Department of Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands
| | - André P van Beek
- Postgraduate School of Medicine, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Marloes Emous
- Center for Obesity Northern Netherlands, Department of Bariatric and Metabolic Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands
- Department of Surgery, Medical Center Leeuwarden, Leeuwarden, The Netherlands
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3
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Focquet M. The length of the biliopancreatic limb in one anastomosis gastric bypass. Front Surg 2024; 11:1248744. [PMID: 39220620 PMCID: PMC11363267 DOI: 10.3389/fsurg.2024.1248744] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Accepted: 07/23/2024] [Indexed: 09/04/2024] Open
Abstract
Introduction The one-anastomosis gastric bypass (OAGB), first published by Dr Rutledge in 1997 is now a well-established procedure in the bariatric-metabolic armamentarium. This procedure based on a (single) loop gastro-jejunal anastomosis (the biliopancreatic limb or BPL) with a long narrow gastric pouch combines restriction with hypo-absorption. The biliopancreatic limb and in particular its length is held responsible for the degree of the hypo-absorptive effect but the most appropriate or "optimal" length of the BPL remains debatable. Methods The following text is based on a comprehensive and meticulous selection of the most recent literature in Cochrane, Pubmed and Google Scholar using the search terms "biliopancreatic limb", "biliopancreatic limb in one anastomosis gastric bypass" in an attempt to define not only the most common used biliopancreatic limb length but also to find out If there is an "ideal" limb length not only to optimize the outcomes of the OAGB in terms of weight loss and resolution of obesity-related diseases but also to reduce the potential side-effects in particular nutritional deficiencies. Results Until today there is no consensus about the "standard" or "ideal" length of the biliopancreatic limb in OAGB, a fixed length of 200 cm is still the most common used procedure although many reports and studies are in favour of shorter limb lengths adjusted to the BMI or the total small bowel length. Conclusion The "ideal" or "optimal" biliopancreatic limb length in OAGB still needs to be defined. There are different options and all of them have their credits, the question remains if a consensus can be reached regarding the best strategy to obtain the best outcome.
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Affiliation(s)
- Marc Focquet
- Bariatric and Metabolic Surgery Unit, Department of General and Abdominal Surgery, AZ Sint Elisabeth Hospital, Zottegem, Belgium
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4
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Poljo A, Peterli R, Kraljević M. Effects of limb lengths in gastric bypass surgery. Br J Surg 2024; 111:znae220. [PMID: 39190791 DOI: 10.1093/bjs/znae220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2024] [Revised: 07/11/2024] [Accepted: 08/07/2024] [Indexed: 08/29/2024]
Affiliation(s)
- Adisa Poljo
- Division of Metabolic Bariatric Surgery, Department of Visceral Surgery, Clarunis-University Digestive Healthcare Center Basel, University Hospital Basel and St. Clara Hospital, Basel, Switzerland
| | - Ralph Peterli
- Division of Metabolic Bariatric Surgery, Department of Visceral Surgery, Clarunis-University Digestive Healthcare Center Basel, University Hospital Basel and St. Clara Hospital, Basel, Switzerland
| | - Marko Kraljević
- Division of Metabolic Bariatric Surgery, Department of Visceral Surgery, Clarunis-University Digestive Healthcare Center Basel, University Hospital Basel and St. Clara Hospital, Basel, Switzerland
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Stevenson M, Lau R, Brathwaite CEM, Ragolia L. Beyond Measure: Navigating the Complexities of Limb Length Optimization in Roux-en-Y Gastric Bypass Surgery. Obes Surg 2024; 34:2691-2693. [PMID: 38743181 DOI: 10.1007/s11695-024-07284-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2024] [Revised: 05/07/2024] [Accepted: 05/09/2024] [Indexed: 05/16/2024]
Affiliation(s)
- Matthew Stevenson
- Department of Foundations of Medicine, NYU Grossman Long Island School of Medicine, Mineola, NY, 11501, USA
| | - Raymond Lau
- Department of Medicine (Endocrinology), NYU Langone Hospital-Long Island, Mineola, NY, 11501, USA
| | - Collin E M Brathwaite
- Department of Foundations of Medicine, NYU Grossman Long Island School of Medicine, Mineola, NY, 11501, USA
- Department of Surgery, NYU Langone Hospital-Long Island, Mineola, NY, 11501, USA
| | - Louis Ragolia
- Department of Foundations of Medicine, NYU Grossman Long Island School of Medicine, Mineola, NY, 11501, USA.
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Abu-Abeid A, Yuval JB, Keidar A, Nizri E, Lahat G, Eldar SM. Technical Considerations in One Anastomosis Gastric Bypass-the Israeli Society of Metabolic and Bariatric Surgery Experience. Obes Surg 2024; 34:2356-2362. [PMID: 38649670 PMCID: PMC11217076 DOI: 10.1007/s11695-024-07223-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/30/2024] [Accepted: 04/10/2024] [Indexed: 04/25/2024]
Abstract
BACKGROUND One anastomosis gastric bypass (OAGB) is gaining popularity worldwide due to its safety and effectiveness. OAGB is the most commonly performed metabolic bariatric surgery (MBS) in Israel. Israel is the only country where OAGB is the most prevalent MBS. Our aim is to address OAGB technical aspects using a national survey completed by members of the Israeli Society of Metabolic and Bariatric Surgery (ISMBS). MATERIALS AND METHODS An online-survey composed of a 17-item-based questionnaire was sent to ISMBS members. All responses were collected and analyzed. RESULTS A total of 47/64 (73.4%) ISMBS members participated in the survey. Most surgeons (74.5%) had > 10 years of MBS experience, and most (61.7%) performed > 100 MBS/year. The majority (78.7%) perform OAGB as their most common procedure. Most surgeons fashion a 10-15-cm pouch and use a 36-Fr bougie, (57.4% and 38.3%). Regarding bowel length measurement, 70% use visual estimation and 10.6% routinely measure total small bowel length (TSBL). The most common reasons for creating a longer biliopancreatic limb (BPL) were high body mass index (BMI) and revisional surgery (83.3% and 66%, respectively). In a primary procedure of a patient with a BMI = 40, most (76.6%) would create a 150-200-cm BPL. In patients with a BMI > 50 or revisional cases, most (70.2% and 68.0%) would create a 175-225-cm BPL. CONCLUSION OAGB is the most prevalent MBS performed in Israel. This survey showed common preferences and variations among ISMBS members. Further studies are needed in order to standardize and build a consensus on OAGB technique.
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Affiliation(s)
- Adam Abu-Abeid
- Division of General Surgery, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, 6 Weizman Street, 64230906, Tel Aviv, Israel.
| | - Jonathan Benjamin Yuval
- Division of General Surgery, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, 6 Weizman Street, 64230906, Tel Aviv, Israel
| | - Andrei Keidar
- Division of General Surgery, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, 6 Weizman Street, 64230906, Tel Aviv, Israel
| | - Eran Nizri
- Division of General Surgery, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, 6 Weizman Street, 64230906, Tel Aviv, Israel
| | - Guy Lahat
- Division of General Surgery, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, 6 Weizman Street, 64230906, Tel Aviv, Israel
| | - Shai Meron Eldar
- Division of General Surgery, Tel Aviv Sourasky Medical Center, Sackler Faculty of Medicine, Tel Aviv University, 6 Weizman Street, 64230906, Tel Aviv, Israel
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Kashyap P, Moayyedi P, Quigley EMM, Simren M, Vanner S. Critical appraisal of the SIBO hypothesis and breath testing: A clinical practice update endorsed by the European society of neurogastroenterology and motility (ESNM) and the American neurogastroenterology and motility society (ANMS). Neurogastroenterol Motil 2024; 36:e14817. [PMID: 38798120 PMCID: PMC11268457 DOI: 10.1111/nmo.14817] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 04/30/2024] [Accepted: 05/03/2024] [Indexed: 05/29/2024]
Abstract
BACKGROUND There is compelling evidence that microbe-host interactions in the intestinal tract underlie many human disorders, including disorders of gut-brain interactions (previously termed functional bowel disorders), such as irritable bowel syndrome (IBS). Small intestinal bacterial overgrowth (SIBO) has been recognized for over a century in patients with predisposing conditions causing intestinal stasis, such as surgical alteration of the small bowel or chronic diseases, including scleroderma and is associated with diarrhea and signs of malabsorption. Over 20 years ago, it was hypothesized that increased numbers of small intestine bacteria might also account for symptoms in the absence of malabsorption in IBS and related disorders. This SIBO-IBS hypothesis stimulated significant research and helped focus the profession's attention on the importance of microbe-host interactions as a potential pathophysiological mechanism in IBS. PURPOSE However, after two decades, this hypothesis remains unproven. Moreover, it has led to serious unintended consequences, namely the widespread use of unreliable and unvalidated breath tests as a diagnostic test for SIBO and a resultant injudicious use of antibiotics. In this review, we examine why the SIBO hypothesis remains unproven and, given the unintended consequences, discuss why it is time to reject this hypothesis and its reliance on breath testing. We also examine recent IBS studies of bacterial communities in the GI tract, their composition and functions, and their interactions with the host. While these studies provide important insights to guide future research, they highlight the need for further mechanistic studies of microbe-host interactions in IBS patients before we can understand their possible role in diagnosis and treatment of patient with IBS and related disorders.
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Affiliation(s)
- Purna Kashyap
- Division of Gastroenterology and Hepatology, Department of Medicine, Mayo Clinic, Rochester, MN, USA
| | - Paul Moayyedi
- Farncombe Institute, McMaster University, Hamilton, Canada
| | - Eamonn MM Quigley
- Lynda K and David M Underwood Center for Digestive Disorders, Houston Methodist Hospital and Weill Cornell Medical College, Houston, Texas, USA
| | | | - Stephen Vanner
- GI Diseases Research Unit, Queen’s University, Kingston, Canada
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Choi SJ, Park JH, Jeon Y, Lee D, Baek JH. Measurement of human peritoneal surface area using artificial intelligence software in abdominal computed tomography. KOREAN JOURNAL OF CLINICAL ONCOLOGY 2024; 20:6-12. [PMID: 38988013 PMCID: PMC11261175 DOI: 10.14216/kjco.24002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 04/17/2024] [Accepted: 05/11/2024] [Indexed: 07/12/2024]
Abstract
PURPOSE The calculation of the intraperitoneal organ surface area is important for understanding their anatomical structure and for conducting basic and clinical studies on diseases related to the peritoneum. To measure the intraperitoneal surface area in a living body by applying artificial intelligence (AI) techniques to the abdominal cavity using computed tomography and to prepare clinical indicators for application to the abdominal cavity. METHODS Computed tomography images of ten adult males and females with a healthy body mass index and ten adults diagnosed with colon cancer were analyzed to determine the peritoneal and intraperitoneal surface areas of the organs. The peritoneal surface was segmented and three-dimensionally modeled using AI medical imaging software. In addition to manual work, three-dimensional editing, filtering, and connectivity checks were performed to improve work efficiency and accuracy. The colon and small intestine surface areas were calculated using the mean length and diameter. The abdominal cavity surface area was defined as the sum of the intraperitoneal area and the surface areas of each organ. RESULTS The mean peritoneal surface area of all participants was measured as 10,039 ± 241 cm2 (males 10,224 ± 171 cm2 and females 9,854 ± 134 cm2). Males had a 3.7% larger peritoneal surface area than females, with a statistically significant difference (P < 0.001). CONCLUSION The abdominal cavity surface area can be measured using AI techniques and is expected to be used as basic data for clinical applications.
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Affiliation(s)
- Seung Joon Choi
- Department of Radiology, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon,
Korea
| | - Ji-Hyeon Park
- Department of Surgery, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon,
Korea
| | - Youngbae Jeon
- Department of Surgery, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon,
Korea
| | - Donghyuk Lee
- Department of Biomedical Engineering, Gachon University College of Medicine, Incheon,
Korea
| | - Jeong-Heum Baek
- Department of Surgery, Gachon University Gil Medical Center, Gachon University College of Medicine, Incheon,
Korea
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Ghiassi S, Nimeri A, Aleassa EM, Grover BT, Eisenberg D, Carter J. American Society for Metabolic and Bariatric Surgery position statement on one-anastomosis gastric bypass. Surg Obes Relat Dis 2024; 20:319-335. [PMID: 38272786 DOI: 10.1016/j.soard.2023.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Accepted: 11/04/2023] [Indexed: 01/27/2024]
Abstract
The following position statement is issued by the American Society for Metabolic and Bariatric Surgery in response to inquiries made to the society by patients, physicians, society members, hospitals, health insurance payors, and others regarding one-anastomosis gastric bypass as a treatment for obesity and metabolic disease. This statement is based on current clinical knowledge, expert opinion, and published peer-reviewed scientific evidence available at this time. The statement may be revised in the future as more information becomes available.
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Affiliation(s)
- Saber Ghiassi
- Department of Surgery, Yale University School of Medicine, New Haven, Connecticut.
| | - Abdelrahman Nimeri
- Department of Surgery, Brigham and Women's Hospital, Harvard School of Medicine, Boston, Massachusetts
| | - Essa M Aleassa
- Digestive Disease Institute, Cleveland Clinic, Abu Dhabi, United Arab Emirates
| | - Brandon T Grover
- Department of Surgery, Gundersen Health System, La Crosse, Wisconsin
| | - Dan Eisenberg
- Department of Surgery, Stanford University School of Medicine, Palo Alto, California
| | - Jonathan Carter
- Department of Surgery, University of California, San Francisco, California
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Liu Z, Huang Z, Zhang Y, Gao L, Yang Y, Chen X, Zhao W, Ma L, Wang Y, Dong Z, Wang C, Qian Y, Yang W. Correlation of T2DM and Anthropometric Measures with Total Small Bowel Length and Its Effects on Diabetes Remission After Bariatric Surgery. Obes Surg 2024; 34:1238-1246. [PMID: 38393456 DOI: 10.1007/s11695-024-07105-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Revised: 02/08/2024] [Accepted: 02/15/2024] [Indexed: 02/25/2024]
Abstract
BACKGROUND The outcome of weight loss surgery is related to several factors, and for super-obese patients, the rate of weight loss failure and weight recovery after Roux-en-Y gastric bypass (RYGB) is high. Relevant studies have shown that the weight loss effect also correlates with total small bowel length (TSBL) and biliopancreatic (BP) and Roux limbs. However, there are few studies on the relationship between TSBL and anthropometric parameters, the BP limb, the Roux limb, and weight loss effect, and no relevant reports have been reported in China. OBJECTIVES The objective was to study the relationship between the total length of the small intestine and anthropometric parameters in the Chinese population. The effect of the Roux limb/biliopancreatic limb (RL/BPL) ratio on weight loss and diabetes remission in RYGB patients 1 year after surgery was evaluated to find the appropriate ratio relationship. METHODS In this prospective study, 148 patients between the ages of 19 and 68 years who underwent laparoscopic Roux-en-Y gastric bypass were enrolled. Height, weight, BMI, the BP limb, the Roux limb, fasting blood glucose (FBG), etc., were noted. To explore the correlation between the total length of the small intestine and these values. Subsequently, the 148 patients were followed up for 1 year after surgery. The patients diagnosed with T2DM before surgery were screened out, and 56 patients were finally identified according to the postoperative follow-up, in which BPL = 50 cm and RL = 150 cm, 175 cm, and 200 cm, respectively. RL/BPL was divided into 3, 3.5, and 4 groups according to the proportional relationship to explore the relationship between RL/BPL and diabetes remission and weight loss. RESULTS (1) The study included 148 patients (61 women and 87 men). The mean age was 35.68 ± 10.46 years, weight = 127.46 ± 34.51 kg, height = 167.83 ± 9.16 cm, BMI = 44.94 ± 10.58 kg/m2. The average TSBL value was 714.41 ± 101.08 cm. Linear regression analysis showed that TSBL was positively correlated with height, weight, neck circumference, chest circumference, waist circumference, and Roux limb. (2) Fifty-six patients with T2DM who were followed up 1 year after surgery were divided into three groups. Group 1: BPL = 50 cm, RL = 150 cm (n = 20); group 2: BPL = 50 cm, RL = 175 cm (n = 26); group 3: BPL = 50 cm, RL = 200 cm (n = 10); RL/BPL = 3 was associated with higher weight loss than the other groups. The remission rate of diabetes did not differ between the three groups. CONCLUSIONS TSBL was positively correlated with height, weight, neck circumference, chest circumference, waist circumference, and Roux limb. The TSBL of males was significantly higher than that of females. Among patients with T2DM who participated in the follow-up 1 year after surgery, RL/BPL = 3 (n = 20) had greater weight loss than the other groups.
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Affiliation(s)
- Zhiya Liu
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University; School of Nursing; Jinan University, Guangzhou, China
| | - Zhilian Huang
- Operating Room, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Avenue West, Guangzhou, China
| | - Yu Zhang
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University; School of Nursing; Jinan University, Guangzhou, China
| | - Lilian Gao
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Avenue West, Guangzhou, China
| | - Ying Yang
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University; School of Nursing; Jinan University, Guangzhou, China
| | - Xiaomei Chen
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Avenue West, Guangzhou, China
| | - Wane Zhao
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Avenue West, Guangzhou, China
| | - Linlin Ma
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University; School of Nursing; Jinan University, Guangzhou, China
| | - Yanwen Wang
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University; School of Nursing; Jinan University, Guangzhou, China
| | - Zhiyong Dong
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Avenue West, Guangzhou, China
| | - Cunchuan Wang
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Avenue West, Guangzhou, China
| | - Yuxiu Qian
- Operating Room, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Avenue West, Guangzhou, China.
| | - Wah Yang
- Department of Metabolic and Bariatric Surgery, The First Affiliated Hospital of Jinan University, No. 613, Huangpu Avenue West, Guangzhou, China.
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Ramos Sarmiento K, Carr A, Diener C, Locey KJ, Gibbons SM. Island biogeography theory provides a plausible explanation for why larger vertebrates and taller humans have more diverse gut microbiomes. THE ISME JOURNAL 2024; 18:wrae114. [PMID: 38904949 PMCID: PMC11253425 DOI: 10.1093/ismejo/wrae114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2024] [Revised: 05/30/2024] [Accepted: 06/20/2024] [Indexed: 06/22/2024]
Abstract
Prior work has shown a positive scaling relationship between vertebrate body size, human height, and gut microbiome alpha diversity. This observation mirrors commonly observed species area relationships (SARs) in many other ecosystems. Here, we expand these observations to several large datasets, showing that this size-diversity scaling relationship is independent of relevant covariates, like diet, body mass index, age, sex, bowel movement frequency, antibiotic usage, and cardiometabolic health markers. Island biogeography theory (IBT), which predicts that larger islands tend to harbor greater species diversity through neutral demographic processes, provides a simple mechanism for positive SARs. Using a gut-adapted IBT model, we demonstrated that increasing the length of a flow-through ecosystem led to increased species diversity, closely matching our empirical observations. We delve into the possible clinical implications of these SARs in the American Gut cohort. Consistent with prior observations that lower alpha diversity is a risk factor for Clostridioides difficile infection (CDI), we found that individuals who reported a history of CDI were shorter than those who did not and that this relationship was mediated by alpha diversity. We observed that vegetable consumption had a much stronger association with CDI history, which was also partially mediated by alpha diversity. In summary, we find that the positive scaling observed between body size and gut alpha diversity can be plausibly explained by a gut-adapted IBT model, may be related to CDI risk, and vegetable intake appears to independently mitigate this risk, although additional work is needed to validate the potential disease risk implications.
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Affiliation(s)
| | - Alex Carr
- Institute for Systems Biology, Seattle, WA 98109, United States
- Molecular Engineering Graduate Program, University of Washington, Seattle, WA 98195, United States
| | - Christian Diener
- Institute for Systems Biology, Seattle, WA 98109, United States
- Diagnostic and Research Institute of Hygiene, Microbiology and Environmental Medicine, Medical University of Graz, 8010 Graz, Austria
| | - Kenneth J Locey
- Center for Quality, Safety & Value Analytics, Rush University Medical Center, Chicago, IL 60612, United States
| | - Sean M Gibbons
- Institute for Systems Biology, Seattle, WA 98109, United States
- Molecular Engineering Graduate Program, University of Washington, Seattle, WA 98195, United States
- Department of Bioengineering, University of Washington, Seattle, WA 98195, United States
- Department of Genome Sciences, University of Washington, Seattle, WA 98195, United States
- Science Institute, University of Washington, Seattle, WA 98195, United States
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12
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Lederhuber H, Massey LH, Kantola VE, Siddiqui MRS, Sayers AE, McDermott FD, Daniels IR, Smart NJ. Clinical management of high-output stoma: a systematic literature review and meta-analysis. Tech Coloproctol 2023; 27:1139-1154. [PMID: 37330988 DOI: 10.1007/s10151-023-02830-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Accepted: 06/01/2023] [Indexed: 06/20/2023]
Abstract
PURPOSE High output is a common complication after stoma formation. Although the management of high output is described in the literature, there is a lack of consensus on definitions and treatment. Our aim was to review and summarise the current best evidence. METHODS MEDLINE, Cochrane Library, BNI, CINAHL, EMBASE, EMCARE, and ClinicalTrials.gov were searched from 1 Jan 2000 to 31 Dec 2021 for relevant articles on adult patients with a high-output stoma. Patients with enteroatmospheric fistulas and case series/reports were excluded. Risk of bias was assessed using RoB2 and MINORS. The review was registered in PROSPERO (CRD42021226621). RESULTS The search strategy identified 1095 articles, of which 32 studies with 768 patients met the inclusion criteria. These studies comprised 15 randomised controlled trials, 13 non-randomised prospective trials, and 4 retrospective cohort studies. Eighteen different interventions were assessed. In the meta-analysis, there was no difference in stoma output between controls and somatostatin analogues (g - 1.72, 95% CI - 4.09 to 0.65, p = 0.11, I2 = 88%, t2 = 3.09), loperamide (g - 0.34, 95% CI - 0.69 to 0.01, p = 0.05, I2 = 0%, t2 = 0) and omeprazole (g - 0.31, 95% CI - 2.46 to 1.84, p = 0.32, I2 = 0%, t2 = 0). Thirteen randomised trials showed high concern of bias, one some concern, and one low concern. The non-randomised/retrospective trials had a median MINORS score of 12 out of 24 (range 7-17). CONCLUSION There is limited high-quality evidence favouring any specific widely used drug over the others in the management of high-output stoma. Evidence, however, is weak due to inconsistent definitions, risk of bias and poor methodology in the existing studies. We recommend the development of validated core descriptor and outcomes sets, as well as patient-reported outcome measures.
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Affiliation(s)
- H Lederhuber
- Royal Devon University HealthCare NHS Foundation Trust, Exeter, UK.
- Department of Colorectal Surgery, Royal Devon University HealthCare NHS Foundation Trust, Barrack Road, Exeter, EX2 5DW, UK.
| | - L H Massey
- St. Mark's The National Bowel Hospital and Academic Institute, London, UK
| | - V E Kantola
- Royal Devon University HealthCare NHS Foundation Trust, Exeter, UK
| | - M R S Siddiqui
- South Tyneside and Sunderland NHS Foundation Trust, Sunderland, UK
| | - A E Sayers
- Royal Devon University HealthCare NHS Foundation Trust, Exeter, UK
| | - F D McDermott
- Royal Devon University HealthCare NHS Foundation Trust, Exeter, UK
| | - I R Daniels
- Royal Devon University HealthCare NHS Foundation Trust, Exeter, UK
| | - N J Smart
- Royal Devon University HealthCare NHS Foundation Trust, Exeter, UK
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13
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Fair L, Waddimba AC, Strothman P, Dwyer D, Anderton P, Bittle A, Ogola GO, Leeds S, Davis D. The use of a total bowel length measurement protocol may reduce reoperations and complications after single-anastomosis duodenal switch. Surg Endosc 2023; 37:9310-9317. [PMID: 37884731 DOI: 10.1007/s00464-023-10505-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Accepted: 09/24/2023] [Indexed: 10/28/2023]
Abstract
INTRODUCTION Most surgeons who perform single-anastomosis duodeno-ileal switches (SADI-S) use a pre-determined common channel length without measuring total bowel length (TBL). However, TBL varies between patients, and a standardized common channel length could contribute to malabsorptive complications and reoperations following SADI-S. The purpose of this study was to determine whether using a TBL measurement protocol to individualize common channel length would be associated with reduced reoperations and complications. METHODS A prospectively maintained data registry was retrospectively reviewed to identify all patients who underwent SADI-S between September 2017 and February 2022. In April 2021, we began using TBL measurements during SADI-S with 40% of the TBL used as the length for the common channel. Outcomes pre-TBL and post-TBL measurement protocol were compared. RESULTS A total of 119 SADI-S recipients (59 pre-TBL; 60 post-TBL) were included. The pre-TBL group had a higher frequency of reoperations (23.7% vs 1.7%, p < 0.001) and late complications (29.3% vs 3.3%, p < 0.001). The mean time to reoperation was 13.7 months in the pre-TBL group and 6.7 months in the post-TBL group (p = 0.347). Patients in the post-TBL group had significantly higher serum albumin levels at 3 months (4.2 g/dL vs 3.5 g/dL, p < 0.001), 6 months (4.1 g/dL vs 3.6 g/dL, p < 0.001), and 12 months (4.2 g/dL vs 3.8 g/dL, p = 0.023) postoperatively when compared to the pre-TBL group. CONCLUSION Using TBL measurements to individualize common channel length was associated with a significant reduction in reoperations and late complications following SADI-S.
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Affiliation(s)
- Lucas Fair
- Department of Minimally Invasive Surgery, Baylor University Medical Center, Dallas, TX, USA
- Baylor Scott and White Research Institute, Dallas, TX, USA
| | - Anthony C Waddimba
- Department of Minimally Invasive Surgery, Baylor University Medical Center, Dallas, TX, USA
- Baylor Scott and White Research Institute, Dallas, TX, USA
| | - Phillip Strothman
- Department of Minimally Invasive Surgery, Baylor University Medical Center, Dallas, TX, USA
| | - Darby Dwyer
- Health Sciences Center, College of Medicine, Texas A&M University, Dallas, TX, USA
| | - Priscilla Anderton
- Health Sciences Center, College of Medicine, Texas A&M University, Dallas, TX, USA
| | - Anella Bittle
- Baylor Scott and White Research Institute, Dallas, TX, USA
| | - Gerald O Ogola
- Baylor Scott and White Research Institute, Dallas, TX, USA
| | - Steven Leeds
- Department of Minimally Invasive Surgery, Baylor University Medical Center, Dallas, TX, USA
- Health Sciences Center, College of Medicine, Texas A&M University, Dallas, TX, USA
- Center for Advanced Surgery, Baylor University Medical Center, Dallas, TX, USA
| | - Daniel Davis
- Department of Minimally Invasive Surgery, Baylor University Medical Center, Dallas, TX, USA.
- Center for Medical and Weight Loss Management, Baylor University Medical Center, Dallas, TX, USA.
- Health Sciences Center, College of Medicine, Texas A&M University, Dallas, TX, USA.
- Center for Metabolic and Weight Loss Surgery, Baylor University Medical Center at Dallas, Dallas, TX, USA.
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14
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Chacon MA, Wilson NA. The Challenge of Small Intestine Length Measurement: A Systematic Review of Imaging Techniques. J Surg Res 2023; 290:71-82. [PMID: 37210758 PMCID: PMC10330168 DOI: 10.1016/j.jss.2023.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 03/22/2023] [Accepted: 04/15/2023] [Indexed: 05/23/2023]
Abstract
BACKGROUND Short bowel syndrome is the most common cause of intestinal failure, with morbidity and mortality linked to remanent small intestine length. There is no current standard for noninvasive bowel length measurement. MATERIALS AND METHODS The literature was systematically searched for articles describing measurements of small intestine length from radiographic studies. Inclusion required reporting intestinal length as an outcome and use of diagnostic imaging for length assessment compared to a ground truth. Two reviewers independently screened studies for inclusion, extracted data, and assessed study quality. RESULTS Eleven studies met the inclusion criteria and reported small intestinal length measurement using four imaging modalities: barium follow-through, ultrasound, computed tomography, and magnetic resonance. Five barium follow-through studies reported variable correlations with intraoperative measurements (r = 0.43-0.93); most (3/5) reported underestimation of length. US studies (n = 2) did not correlate with ground truths. Two computed tomography studies reported moderate-to-strong correlations with pathologic (r = 0.76) and intraoperative measurements (r = 0.99). Five studies of magnetic resonance showed moderate-to-strong correlations with intraoperative or postmortem measurements (r = 0.70-0.90). Vascular imaging software was used in two studies, and a segmentation algorithm was used for measurements in one. CONCLUSIONS Noninvasive measurement of small intestine length is challenging. Three-dimensional imaging modalities reduce the risk of length underestimation, which is common with two-dimensional techniques. However, they also require longer times to perform length measurements. Automated segmentation has been trialed for magnetic resonance enterography, but this method does not translate directly to standard diagnostic imaging. While three-dimensional images are most accurate for length measurement, they are limited in their ability to measure intestinal dysmotility, which is an important functional measure in patients with intestinal failure. Future work should validate automated segmentation and measurement software using standard diagnostic imaging protocols.
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Affiliation(s)
- Miranda A Chacon
- Department of Surgery, University of Rochester Medical Center, Rochester, New York
| | - Nicole A Wilson
- Division of Pediatric Surgery, Department of Surgery, University of Rochester Medical Center, Rochester, New York; Department of Biomedical Engineering, University of Rochester, Rochester, New York.
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15
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Eagleston J, Nimeri A. Optimal Small Bowel Limb Lengths of Roux-en-Y Gastric Bypass. Curr Obes Rep 2023; 12:345-354. [PMID: 37466789 DOI: 10.1007/s13679-023-00513-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 05/18/2023] [Indexed: 07/20/2023]
Abstract
PURPOSE OF REVIEW Gastric bypass and biliopancreatic diversion (BPD) have come full circle, from a loop configuration to a Roux-en-Y and finally back to a loop configuration as one anastomosis gastric bypass and single-anastomosis duodenal switch. Most surgeons performing Roux-en-Y gastric bypass (RYGB) do not measure the common channel (CC) length and most surgeons performing BPD do not measure the biliopancreatic limb length (BPL). RECENT FINDINGS The small bowel length in humans is variable from as short as < 400 cm to as long as > 1000 cm. The combination of these two facts means that even if surgeons keep the limb lengths constant, surgeons will get variable limb length due to the variability of small bowel length in patients. Hence, outcomes of weight loss, resolution of medical problems, or developing nutritional deficiencies which are related to limb length are variable. In this article, we evaluate the published literature related to the effect of varying the Roux limb, BPL, CC, and total alimentary limb lengths on the outcomes of RYGB. We have focused on historical and current randomized controlled trials as well as systematic reviews and meta-analysis to outline the current literature and our interpretation of this literature.
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Affiliation(s)
- Justin Eagleston
- Bariatric Surgery, Department of Surgery, Atrium Health, Charlotte, USA
| | - Abdelrahman Nimeri
- Wake Forest School of Medicine, Bariatric Surgery, Atrium Health, Charlotte, NC, USA.
- Director, of Bariatric Surgery, Brigham and Womens Hospital, Harvard Medical School, 75 Francis, MA, 02115, Boston, USA.
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16
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Zhu J. The Ratio of Common Limb and Total Bowel Length Could Be Used in Determination of Anastomotic Position in Single Anastomosis Duodenal-Ileal Bypass with Sleeve Gastrectomy. Obes Surg 2023; 33:1598-1599. [PMID: 36879158 DOI: 10.1007/s11695-023-06534-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 02/24/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023]
Affiliation(s)
- Jiangfan Zhu
- Bariatric and Metabolic Surgery Center, The 10Th Hospital, Tongji University School of Medicine, 301 Yanchang Road, Shanghai, China.
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17
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Hort A, Cheng Q, Morosin T, Yoon P, Talbot M. Optimal common limb length in
Roux‐en‐Y
gastric bypass surgery: is it important for an ideal outcome? – a systematic review. ANZ J Surg 2022; 93:851-858. [PMID: 36480354 DOI: 10.1111/ans.18192] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2022] [Revised: 11/07/2022] [Accepted: 11/27/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND In Roux-en-Y gastric bypass (RYGB) surgery the common limb length (CLL) is thought to significantly impact on nutritional and metabolic outcomes. However, there has been little focus on establishing routine standardized CLL measurements and its subsequent effect on weight loss and nutritional status. This review aimed to determine the effect of variations of CLL in RYGB surgery on post-operative outcomes, particularly nutritional status, while considering the need for routine CLL measurements in addition to measuring biliopancreatic limb and alimentary limb lengths. METHODS A systematic review was performed in accordance with the PRISMA guidelines. All English language articles addressing CLL and impact on weight loss, nutritional and metabolic outcomes were retrieved and reviewed. RESULTS Thirteen relevant studies were identified with CLLs varying from 76 to >600 cm. No significant difference in total body weight loss or excess weight loss was observed. Significant metabolic improvements occurred with shorter CLLs. Nutritional deficiencies were more severe when the CLL was <400 cm. CONCLUSION The data from this systematic review suggests that reasonable weight loss and positive impacts on metabolic outcomes can be achieved with CLLs of >400 cm.
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Affiliation(s)
- Amy Hort
- Department of Surgery Westmead Hospital Sydney New South Wales Australia
- Department of Surgery, The School of Medicine The University of Sydney Sydney New South Wales Australia
| | - Qiuye Cheng
- Department of Surgery Westmead Hospital Sydney New South Wales Australia
- UNSW St George and Sutherland Clinical School Sydney New South Wales Australia
| | - Tia Morosin
- Department of Surgery Westmead Hospital Sydney New South Wales Australia
| | - Peter Yoon
- Department of Surgery Westmead Hospital Sydney New South Wales Australia
| | - Michael Talbot
- UNSW St George and Sutherland Clinical School Sydney New South Wales Australia
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18
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Kamocka A, Chidambaram S, Erridge S, Vithlani G, Miras AD, Purkayastha S. Length of biliopancreatic limb in Roux-en-Y gastric bypass and its impact on post-operative outcomes in metabolic and obesity surgery-systematic review and meta-analysis. Int J Obes (Lond) 2022; 46:1983-1991. [PMID: 35927470 PMCID: PMC9584808 DOI: 10.1038/s41366-022-01186-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 06/28/2022] [Accepted: 07/01/2022] [Indexed: 11/09/2022]
Abstract
BACKGROUND Roux-en-Y gastric bypass (RYGB) is a gold-standard procedure for treatment of obesity and associated comorbidities. No consensus on the optimal design of this operation has been achieved, with various lengths of bypassed small bowel limb lengths being used by bariatric surgeons. This aim of this systematic review and meta-analysis was to determine whether biliopancreatic limb (BPL) length in RYGB affects postoperative outcomes including superior reduction in weight, body mass index (BMI), and resolution of metabolic comorbidities associated with obesity. METHODS A systematic search of the literature was conducted up until 1st June 2021. Meta-analysis of primary outcomes was performed utilising a random-effects model. Statistical significance was determined by p value < 0.05. RESULTS Ten randomised controlled trials were included in the final quantitative analysis. No difference in outcomes following short versus long BLP in RYGB was identified at 12-72 months post-operatively, namely in BMI reduction, remission or improvement of type 2 diabetes mellitus, hypertension, dyslipidaemia, and complications (p > 0.05). Even though results of four studies showed superior total body weight loss in the long BPL cohorts at 24 months post-operatively (pooled mean difference -6.92, 95% CI -12.37, -1.48, p = 0.01), this outcome was not observed at any other timepoint. CONCLUSION Based on the outcomes of the present study, there is no definitive evidence to suggest that alteration of the BPL affects the quantity of weight loss or resolution of co-existent metabolic comorbidities associated with obesity.
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Affiliation(s)
- Anna Kamocka
- Department of Metabolism, Digestion and Reproduction, Hammersmith Hospital, Imperial College London, 6th Floor Commonwealth Building, Du Cane Road, London, W12 0NN, UK.
| | | | - Simon Erridge
- Department of Surgery and Cancer, Imperial College London, London, SW7 2AZ, UK
| | - Gauri Vithlani
- Department of Surgery and Cancer, Imperial College London, London, SW7 2AZ, UK
| | - Alexander Dimitri Miras
- Department of Metabolism, Digestion and Reproduction, Hammersmith Hospital, Imperial College London, 6th Floor Commonwealth Building, Du Cane Road, London, W12 0NN, UK
- School of Medicine, Ulster University, London, UK
| | - Sanjay Purkayastha
- Department of Surgery and Cancer, Imperial College London, London, SW7 2AZ, UK
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19
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Hatami M, Pazouki A, Kabir A. Excessive weight loss after bariatric surgery: a prediction model retrospective cohort study. Updates Surg 2022; 74:1399-1411. [PMID: 35779229 DOI: 10.1007/s13304-022-01319-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 06/14/2022] [Indexed: 10/17/2022]
Abstract
Bariatric surgery has been recognized as the most effective long-term treatment for morbid obesity. Despite the considerable positive results, adverse consequence can develop. Excessive Weight Loss (EXWL), a rare consequence of bariatric surgery, can lead to a broad adverse consequence. The aim of this study was determining of prevalence and the predicting model of EXWL in patient underwent bariatric surgery until 24 months after surgery. Data have been extracted from the National Obesity Surgery Database in obesity clinic of Iran University of Medical Sciences. The subjects of this retrospective cohort study were morbid obese individuals who underwent three various types of bariatric surgery [One Anastomosis Gastric Bypass (OAGB), Roux-en-Y Gastric Bypass (RYGB), or Sleeve Gastrectomy (SG)] in period of 24 months ago. EXWL has been defined as reaching to less than or equal to BMI 18.5 at any time until 24 months after surgery. SPSS was used in data analysis. Among 4214 subjects of this study, most excess weight loss after surgery has taken place in 18 months after surgery. 11.4% (n = 495) of patients experienced EXWL with highest percentage among OAGB patients (15.1%) at time of 24 months after surgery. The females (20.4% vs.9.9%) and younger persons (35.45 ± 10.25 vs. 39.06 ± 10.76) were more susceptible to EXWL. Patients with EXWL had significantly lower BMI (body mass index) (41.11 ± 4.51 vs. 46.73 ± 6.26) (Kg/m2), and were less probable to had emotional eating. Visceral fat level, fat percentage, and BMI were the best predictor of EXWL (P value for all < 0.05). So that per level increase in visceral fat, decreases the probability of EXWL as 47% and 61% in SG and OAGB. Moreover, each unit lower BMI leads to 25% higher susceptibility to experience EXWL. Surgery should be adjusted in younger females with a lower BMI and healthy metabolic status who are more prone to EXWL. In such a way that minimize weight loss speed/value. It may be possible by selection of other surgery procedures, rather than OAGB, tighter follow-ups, and consultations of patients after surgery is emphasized for more EXWL vulnerable patients.
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Affiliation(s)
- Mahsa Hatami
- Minimally Invasive Surgery Research Center; Iran University of Medical Sciences, Tehran, Iran.,Department of Clinical Nutrition, School of Nutritional Sciences and Dietetics, Tehran University of Medical Sciences, Tehran, Iran
| | - Abdolreza Pazouki
- Minimally Invasive Surgery Research Center; Iran University of Medical Sciences, Tehran, Iran.,Center of Excellence of International Federation for Surgery of Obesity, Hazrat E Rasool Hospital, Tehran, Iran
| | - Ali Kabir
- Minimally Invasive Surgery Research Center; Iran University of Medical Sciences, Tehran, Iran.
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20
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Li Y, Gu Y, Jin Y, Mao Z. What Is the Efficacy of Short Length of Biliopancreatic Limb in One-Anastomosis Gastric Bypass? A Systematic Review and Meta-analysis of Short-Term Results. Obes Surg 2022; 32:1-9. [PMID: 35461404 DOI: 10.1007/s11695-022-06048-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 03/30/2022] [Accepted: 04/07/2022] [Indexed: 10/18/2022]
Abstract
OBJECTIVE To systematically review the efficacy of short length of biliopancreatic limb (BPL) in laparoscopic one anastomosis gastric bypass (OAGB). METHODS By thoroughly investigating in PubMed, Embase, and the Cochrane Library, each research containing the comparison between short BPL and 200-cm BPL was included, inception in July 2021. The research followed the guidance of Preferred Reporting Items for Systematic Reviews and Meta-Analyses Protocols (PRISMA-P) recommendations. RESULT A total of 1288 patients were included for meta-analysis. Results showed that in the short term, compared with 200-cm BPL, percentage excess weight loss (%EWL) did not show significant reduction (p = 0.91), neither did the incidence of vitamin D deficiency (p = 0.87) nor hypoalbuminemia (p = 0.06), while percentage total weight loss (%TWL) was significantly higher in the 200-cm BPL group (p = 0.0005). At 1, 2, and 8 years postoperatively, patients with short BPL still obtained significantly reduced body mass index (BMI). CONCLUSION Short BPL shows significant effect of weight loss; however, it seems no significantly lower rates of adverse events in the short term are found. More research with randomized controlled design is encouraged to further address the incidence of adverse events in the long term.
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Affiliation(s)
- Yichen Li
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, 215123, People's Republic of China
| | - Yijie Gu
- Department of Gastrointestinal Medicine, The First Affiliated Hospital of Soochow University, Suzhou, 215123, People's Republic of China
| | - Yujia Jin
- Department of Pulmonology and Critical Care Medicine, The First Affiliated Hospital of Soochow University, Suzhou, 215123, People's Republic of China
| | - Zhongqi Mao
- Department of General Surgery, The First Affiliated Hospital of Soochow University, Suzhou, 215123, People's Republic of China.
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21
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Slagter N, de Heide LJM, Jutte EH, Kaijser MA, Damen SL, van Beek AP, Emous M. Tailoring limb length based on total small bowel length in one anastomosis gastric bypass surgery (TAILOR study): study protocol for a randomized controlled trial. Trials 2022; 23:526. [PMID: 35733198 PMCID: PMC9214974 DOI: 10.1186/s13063-022-06456-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2021] [Accepted: 06/08/2022] [Indexed: 11/29/2022] Open
Abstract
Background The one anastomosis gastric bypass (OAGB) is being performed by an increasing number of bariatric centers over the world. However, the optimal length of the biliopancreatic (BP) limb remains a topic of discussion. Retrospective studies suggest the benefit of tailoring BP-limb length; however, randomized trials are lacking. The aim of this study is to investigate whether tailoring the length of the BP-limb based on total small bowel length (TSBL) leads to better results in terms of weight loss, vitamin deficiencies, and bowel movements compared to a fixed BP-limb length. Methods The TAILOR study is a double-blind single-center randomized controlled trial. Patients scheduled for primary OAGB surgery will be randomly allocated either to a standard BP-limb of 150 cm or to a BP-limb length based on their TSBL: TSBL < 500 cm, BP-limb 150 cm; TSBL 500–700 cm, BP-limb 180 cm; TSBL > 700 cm, BP-limb 210 cm. The primary outcome is to compare the percent total weight loss (%TWL) at 5 years between the two groups. Secondary outcomes include nutritional deficiencies, remission of comorbidities, symptoms of dumping, quality of life, and daily bowel movements. The study includes a total of 212 patients and is designed to detect a 5% difference in the primary endpoint. Discussion The TAILOR study will provide new insights into the effect of different BP-limb lengths and the role of the TSBL in the OAGB. The study is designed to provide guidance for bariatric surgeons to determine the optimal BP-limb length in the OAGB. Trial registration Dutch Trial Register NL7945. Prospectively registered on 08 September 2019. NTR (trialregister.nl) Supplementary Information The online version contains supplementary material available at 10.1186/s13063-022-06456-w.
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Affiliation(s)
- Nienke Slagter
- Center for Obesity Northern Netherlands (CON), Medical Center Leeuwarden, Henri Dunantweg 2, 8934, AD, Leeuwarden, The Netherlands. .,University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
| | - Loek J M de Heide
- Center for Obesity Northern Netherlands (CON), Medical Center Leeuwarden, Henri Dunantweg 2, 8934, AD, Leeuwarden, The Netherlands
| | - Ewoud H Jutte
- Center for Obesity Northern Netherlands (CON), Medical Center Leeuwarden, Henri Dunantweg 2, 8934, AD, Leeuwarden, The Netherlands
| | - Mirjam A Kaijser
- Center for Obesity Northern Netherlands (CON), Medical Center Leeuwarden, Henri Dunantweg 2, 8934, AD, Leeuwarden, The Netherlands
| | - Stefan L Damen
- Center for Obesity Northern Netherlands (CON), Medical Center Leeuwarden, Henri Dunantweg 2, 8934, AD, Leeuwarden, The Netherlands
| | - André P van Beek
- Department of Endocrinology, University of Groningen, University Medical Center Groningen, Groningen, the Netherlands
| | - Marloes Emous
- Center for Obesity Northern Netherlands (CON), Medical Center Leeuwarden, Henri Dunantweg 2, 8934, AD, Leeuwarden, The Netherlands
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Berton M, Bettonte S, Stader F, Battegay M, Marzolini C. Repository Describing the Anatomical, Physiological, and Biological Changes in an Obese Population to Inform Physiologically Based Pharmacokinetic Models. Clin Pharmacokinet 2022; 61:1251-1270. [PMID: 35699913 PMCID: PMC9439993 DOI: 10.1007/s40262-022-01132-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/28/2022] [Indexed: 11/24/2022]
Abstract
Background Obesity is associated with physiological changes that can affect drug pharmacokinetics. Obese individuals are underrepresented in clinical trials, leading to a lack of evidence-based dosing recommendations for many drugs. Physiologically based pharmacokinetic (PBPK) modelling can overcome this limitation but necessitates a detailed description of the population characteristics under investigation. Objective The purpose of this study was to develop and verify a repository of the current anatomical, physiological, and biological data of obese individuals, including population variability, to inform a PBPK framework. Methods A systematic literature search was performed to collate anatomical, physiological, and biological parameters for obese individuals. Multiple regression analyses were used to derive mathematical equations describing the continuous effect of body mass index (BMI) within the range 18.5–60 kg/m2 on system parameters. Results In total, 209 studies were included in the database. The literature reported mostly BMI-related changes in organ weight, whereas data on blood flow and biological parameters (i.e. enzyme abundance) were sparse, and hence physiologically plausible assumptions were made when needed. The developed obese population was implemented in Matlab® and the predicted system parameters obtained from 1000 virtual individuals were in agreement with observed data from an independent validation obese population. Our analysis indicates that a threefold increase in BMI, from 20 to 60 kg/m2, leads to an increase in cardiac output (50%), liver weight (100%), kidney weight (60%), both the kidney and liver absolute blood flows (50%), and in total adipose blood flow (160%). Conclusion The developed repository provides an updated description of a population with a BMI from 18.5 to 60 kg/m2 using continuous physiological changes and their variability for each system parameter. It is a tool that can be implemented in PBPK models to simulate drug pharmacokinetics in obese individuals.
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Affiliation(s)
- Mattia Berton
- Division of Infectious Diseases and Hospital Epidemiology, Departments of Medicine and Clinical Research, University Hospital Basel, Basel, Switzerland. .,University of Basel, Basel, Switzerland.
| | - Sara Bettonte
- Division of Infectious Diseases and Hospital Epidemiology, Departments of Medicine and Clinical Research, University Hospital Basel, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | | | - Manuel Battegay
- Division of Infectious Diseases and Hospital Epidemiology, Departments of Medicine and Clinical Research, University Hospital Basel, Basel, Switzerland.,University of Basel, Basel, Switzerland
| | - Catia Marzolini
- Division of Infectious Diseases and Hospital Epidemiology, Departments of Medicine and Clinical Research, University Hospital Basel, Basel, Switzerland.,University of Basel, Basel, Switzerland
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23
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Revisional Surgery of One Anastomosis Gastric Bypass for Severe Protein–Energy Malnutrition. Nutrients 2022; 14:nu14112356. [PMID: 35684155 PMCID: PMC9183067 DOI: 10.3390/nu14112356] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 06/01/2022] [Accepted: 06/03/2022] [Indexed: 12/13/2022] Open
Abstract
Background: One anastomosis gastric bypass (OAGB) is safe and effective. Its strong malabsorptive component might cause severe protein–energy malnutrition (PEM), necessitating revisional surgery. We aimed to evaluate the safety and outcomes of OAGB revision for severe PEM. Methods: This was a single-center retrospective analysis of OAGB patients undergoing revision for severe PEM (2015–2021). Perioperative data and outcomes were retrieved. Results: Ten patients underwent revision for severe PEM. Our center’s incidence is 0.63% (9/1425 OAGB). All patients were symptomatic. Median (interquartile range) EWL and lowest albumin were 103.7% (range 57.6, 114) and 24 g/dL (range 19, 27), respectively, and 8/10 patients had significant micronutrient deficiencies. Before revision, nutritional optimization was undertaken. Median OAGB to revision interval was 18.4 months (range 15.7, 27.8). Median BPL length was 200 cm (range 177, 227). Reversal (n = 5), BPL shortening (n = 3), and conversion to Roux-en-Y gastric bypass (RYGB) (n = 2) were performed. One patient had anastomotic leak after BPL shortening. No death occurred. Median BMI and albumin increased from 22.4 kg/m2 (range 20.6, 30.3) and 35.5 g/dL (range 29.2, 41), respectively, at revision to 27.5 (range 22.2, 32.4) kg/m2 and 39.5 g/dL (range 37.2, 41.7), respectively, at follow-up (median 25.4 months, range 3.1, 45). Complete resolution occurs after conversion to RYGB or reversal to normal anatomy, but not after BPL shortening. Conclusions: Revisional surgery of OAGB for severe PEM is feasible and safe after nutritional optimization. Our results suggest that the type of revision may be an important factor for PEM resolution. Comparative studies are needed to define the role of each revisional option.
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24
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Schneider R, Kraljević M, Peterli R, Rohm TV, Bosch AJ, Low AJ, Keller L, AlAsfoor S, Häfliger S, Yilmaz B, Peterson CJ, Lazaridis II, Vonaesch P, Delko T, Cavelti-Weder C. Roux-en-Y gastric bypass with a long compared to a short biliopancreatic limb improves weight loss and glycemic control in obese mice. Surg Obes Relat Dis 2022; 18:1286-1297. [DOI: 10.1016/j.soard.2022.06.286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Revised: 05/02/2022] [Accepted: 06/18/2022] [Indexed: 11/30/2022]
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25
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Eckharter C, Heeren N, Mongelli F, Sykora M, Fenner H, Scheiwiller A, Metzger J, Gass JM. Effects of short or long biliopancreatic limb length after laparoscopic Roux-en-Y gastric bypass surgery for obesity: a propensity score-matched analysis. Langenbecks Arch Surg 2022; 407:2319-2326. [PMID: 35536386 PMCID: PMC9468033 DOI: 10.1007/s00423-022-02537-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 04/25/2022] [Indexed: 11/23/2022]
Abstract
Purpose Although recent studies reported superior weight reduction in patients undergoing Roux-en-Y gastric bypass (RYGB) with long biliopancreatic limb (BPL), no recommendation regarding limb lengths exists. This study compares weight loss and resolution of obesity-related comorbidities in patients undergoing RYGB with either long or short BPL. Methods A retrospective data search from medical records was performed. A total of 308 patients underwent laparoscopic RYGB with a BPL length of either 100 cm or 50 cm. Data was analyzed before and after propensity score matching. Results No statistically significant difference in weight reduction between long and short BPL RYGB in terms of percentage of excess weight loss (%EWL) (86.4 ± 24.5 vs. 83.4 ± 21.4, p = 0.285) and percentage of total weight loss (%TWL) (32.4 ± 8.4 vs. 33.0 ± 8.3, p = 0.543) was found 24 months after surgery. Propensity score–matched analysis did not show any statistically significant difference between groups in both %EWL and %TWL. No significant difference between long and short BPL RYGB in the resolution of obesity-related comorbidities was noted 24 months after surgery. Conclusion Weight loss and resolution of obesity-related comorbidities were not significantly different between long and short BPL RYGB 24 months after surgery.
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Affiliation(s)
- Christoph Eckharter
- Department of General and Visceral Surgery, Lucerne Cantonal Hospital, Lucerne, Switzerland
| | - Nickolaus Heeren
- Department of General and Visceral Surgery, Lucerne Cantonal Hospital, Lucerne, Switzerland
| | | | - Martin Sykora
- Department of General and Visceral Surgery, Lucerne Cantonal Hospital, Lucerne, Switzerland.,Department of Surgery, Nidwalden Cantonal Hospital, Stans, Switzerland
| | - Hartwig Fenner
- Department of General and Visceral Surgery, Lucerne Cantonal Hospital, Lucerne, Switzerland
| | - Andreas Scheiwiller
- Department of General and Visceral Surgery, Lucerne Cantonal Hospital, Lucerne, Switzerland
| | - Jürg Metzger
- Department of General and Visceral Surgery, Lucerne Cantonal Hospital, Lucerne, Switzerland
| | - Jörn-Markus Gass
- Department of General and Visceral Surgery, Lucerne Cantonal Hospital, Lucerne, Switzerland. .,Department of Health Sciences and Medicine, University of Lucerne, Lucerne, Switzerland.
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26
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Merritt RJ. Gastroschisis: Progress and Challenges. J Pediatr 2022; 243:8-11. [PMID: 34958830 DOI: 10.1016/j.jpeds.2021.12.049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 12/21/2021] [Indexed: 11/25/2022]
Affiliation(s)
- Russell J Merritt
- Department of Pediatrics, Children's Hospital Los Angeles, Keck School of Medicine, University of Southern California, Los Angeles, California.
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27
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Effect of Biliopancreatic Limb Length on Weight Loss, Postoperative Complications, and Remission of Comorbidities in One Anastomosis Gastric Bypass: a Systematic Review and Meta-analysis. Obes Surg 2022; 32:892-903. [PMID: 35091899 DOI: 10.1007/s11695-021-05848-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Revised: 11/29/2021] [Accepted: 12/13/2021] [Indexed: 02/06/2023]
Abstract
Aimed to evaluate the effects of biliopancreatic limb (BPL) length on weight loss, postoperative complications, and remission of comorbidities in OAGB.. An extensive search was conducted in PubMed, Scopus, EMBASE, and Google Scholar databases to find related OAGB articles. Both BPL length < 200 cm (by - 17.79, 95% CI - 19.23, - 16.34) and BPL length ≥ 200 cm (by - 14.93, 95% CI - 15.66, - 14.20) significantly decreased BMI. Regarding the effect of BPL length on comorbidities and postoperative complications, it was shown that BPL length < 200 cm is safer and more effective. Therefore, standardization of BPL length < 200 cm is suggested. Bypassing ≥ 200 cm of the small bowel does not ameliorate weight loss or resolve comorbidities significantly, and it is related to more frequent postoperative complications and nutritional deficiencies. Registration number in PROSPERO: PROSPERO 2021 CRD42021225499.
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28
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Sang Q, Wang L, Wuyun Q, Zheng X, Wang D, Zhang N, Du D. Retrospective Comparison of SADI-S Versus RYGB in Chinese with Diabetes and BMI< 35kg/m 2: a Propensity Score Adjustment Analysis. Obes Surg 2021; 31:5166-5175. [PMID: 34591261 DOI: 10.1007/s11695-021-05708-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 09/01/2021] [Accepted: 09/02/2021] [Indexed: 10/20/2022]
Abstract
BACKGROUND As a modification of the duodenal switch (DS), single-anastomosis duodenal-ileal bypass with sleeve gastrectomy (SADI-S) has recently become very popular and is successful for weight loss and T2DM remission. However, current studies have been mostly aimed at patients with severe obesity. OBJECTIVES In this study, we firstly compare primary SADI-S to the Roux-en-Y gastric bypass (RYGB) in Chinese with diabetes and BMI< 35 kg/m2. METHODS Using a propensity score (PS) matching analysis, we analyzed all patients with diabetes and BMI< 35 kg/m2 who underwent primary SADI-S or RYGB. All surgeries were conducted by a single surgeon at a Chinese center from June 2017 to January 2019. RESULTS Twenty-six patients who underwent SADI-S and 65 patients who underwent RYGB were included in our analysis. Of these, 26 (100%) of patients in the SADI-S group and 43 (66%) of patients in the RYGB group completed the 24-month follow-up. No severe perioperative complication was observed in either group. There was a statistically higher percentage of total weight loss with SADI-S at the 2-year follow-up when compared to RYGB (p = 0.017 after PS correction). After PS adjustment, 76.5% of patients in the SADI-S group and 82.4% of patients in the RYGB group achieved complete remission of T2DM (p = 1.000). Nutritional outcomes were similar in the two groups. CONCLUSION In Chinese with diabetes and BMI< 35 kg/m2, with comparable T2DM remission and nutritional outcomes, primary SADI-S allows for better weight loss than RYGB. Compared with RYGB, SADI-S is also a safe, effective, and feasible treatment for these patients.
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Affiliation(s)
- Qing Sang
- Surgery Centre of Diabetes Mellitus, Peking University Ninth School of Clinical Medicine, Beijing, 100038, China
| | - Liang Wang
- Surgery Centre of Diabetes Mellitus, Peking University Ninth School of Clinical Medicine, Beijing, 100038, China
| | - Qiqige Wuyun
- Surgery Centre of Diabetes Mellitus, Capital Medical University Affiliated Beijing Shijitan Hospital, Beijing, 100038, China
| | - Xuejing Zheng
- Surgery Centre of Diabetes Mellitus, Peking University Ninth School of Clinical Medicine, Beijing, 100038, China
| | - Dezhong Wang
- Department of General Surgery, Aerospace Center Hospital, Beijing, 100049, China
| | - Nengwei Zhang
- Surgery Centre of Diabetes Mellitus, Peking University Ninth School of Clinical Medicine, Beijing, 100038, China.
| | - Dexiao Du
- Surgery Centre of Diabetes Mellitus, Peking University Ninth School of Clinical Medicine, Beijing, 100038, China.
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29
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Martini F, Petrucciani N, Liagre A. Comment on: the role of total alimentary limb length in Roux-en-Y gastric bypass - a systematic review. Surg Obes Relat Dis 2021; 18:563-564. [PMID: 34654675 DOI: 10.1016/j.soard.2021.09.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 09/24/2021] [Indexed: 11/18/2022]
Affiliation(s)
- Francesco Martini
- Bariatric Surgery Unit, Ramsay Générale de Santé, Clinique des Cedres, Cornebarrieu, France
| | - Niccolo Petrucciani
- Department of Medical and Surgical Sciences and Translational Medicine, Faculty of Medicine and Psychology, St. Andrea Hospital, Sapienza University, Rome, Italy
| | - Arnaud Liagre
- Bariatric Surgery Unit, Ramsay Générale de Santé, Clinique des Cedres, Cornebarrieu, France
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30
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Wagner M, Mayer BFB, Bodenstedt S, Kowalewski KF, Nickel F, Speidel S, Fischer L, Kenngott HG, Müller-Stich BP. Comparison of Conventional Methods for Bowel Length Measurement in Laparoscopic Surgery to a Novel Computer-Assisted 3D Measurement System. Obes Surg 2021; 31:4692-4700. [PMID: 34331186 PMCID: PMC8490232 DOI: 10.1007/s11695-021-05620-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Revised: 07/15/2021] [Accepted: 07/20/2021] [Indexed: 12/05/2022]
Abstract
Purpose Accurate laparoscopic bowel length measurement (LBLM), which is used primarily in metabolic surgery, remains a challenge. This study aims to three conventional methods for LBLM, namely using visual judgment (VJ), instrument markings (IM), or premeasured tape (PT) to a novel computer-assisted 3D measurement system (BMS). Materials and Methods LBLM methods were compared using a 3D laparoscope on bowel phantoms regarding accuracy (relative error in percent, %), time in seconds (s), and number of bowel grasps. Seventy centimeters were measured seven times. As a control, the first, third, fifth, and seventh measurements were performed with VJ. The interventions IM, PT, and BMS were performed following a randomized order as the second, fourth, and sixth measurements. Results In total, 63 people participated. BMS showed better accuracy (2.1±3.7%) compared to VJ (8.7±13.7%, p=0.001), PT (4.3±6.8%, p=0.002), and IM (11±15.3%, p<0.001). Participants performed LBLM in a similar amount of time with BMS (175.7±59.7s) and PT (166.5±63.6s, p=0.35), but VJ (64.0±24.0s, p<0.001) and IM (144.9±55.4s, p=0.002) were faster. Number of bowel grasps as a measure for the risk of bowel lesions was similar for BMS (15.8±3.0) and PT (15.9±4.6, p=0.861), whereas VJ required less (14.1±3.4, p=0.004) and IM required more than BMS (22.2±6.9, p<0.001). Conclusions PT had higher accuracy than VJ and IM, and lower number of bowel grasps than IM. BMS shows great potential for more reliable LBLM. Until BMS is available in clinical routine, PT should be preferred for LBLM. Graphical abstract ![]()
Supplementary Information The online version contains supplementary material available at 10.1007/s11695-021-05620-6.
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Affiliation(s)
- Martin Wagner
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
| | - Benjamin F B Mayer
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
| | - Sebastian Bodenstedt
- Division of Translational Surgical Oncology, National Center for Tumor Diseases, Partner-Site Dresden, Fetscherstraße 74, 01307, Dresden, Germany
| | - Karl-Friedrich Kowalewski
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany.,Department of Urology and Urological Surgery, University Medical Center Mannheim, Heidelberg University, Theodor-Kutzer-Ufer, 68167, Mannheim, Germany
| | - Felix Nickel
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
| | - Stefanie Speidel
- Division of Translational Surgical Oncology, National Center for Tumor Diseases, Partner-Site Dresden, Fetscherstraße 74, 01307, Dresden, Germany
| | - Lars Fischer
- Department for General and Visceral Surgery, Hospital Mittelbaden, Balger Str. 50, 76532, Baden-Baden, Germany
| | - Hannes G Kenngott
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany
| | - Beat-Peter Müller-Stich
- Department of General, Visceral and Transplantation Surgery, Heidelberg University Hospital, Im Neuenheimer Feld 420, 69120, Heidelberg, Germany.
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31
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Outcomes of the One Anastomosis Gastric Bypass with Various Biliopancreatic Limb Lengths: a Retrospective Single-Center Cohort Study. Obes Surg 2021; 31:4236-4242. [PMID: 34283379 PMCID: PMC8458216 DOI: 10.1007/s11695-021-05555-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/17/2021] [Accepted: 06/24/2021] [Indexed: 12/15/2022]
Abstract
Introduction One anastomosis gastric bypass (OAGB) is an effective and safe treatment for morbidly obese patients. Longer biliopancreatic (BP) limb length is suggested to result in better weight loss outcomes, but to date, no data are available for the OAGB to substantiate this. We hypothesized that applying a longer BP-limb length in the higher BMI classes would result in more weight reduction so that the attained BMI would be comparable to patients with a lower BMI, thereby compensating for differences in baseline BMI. Method A retrospective cohort study in patients who underwent a primary OAGB at a teaching hospital in the Netherlands between January 2015 and December 2016. BP-limb length was tailored based on preoperative BMI. Patients were divided into three different groups depending on the length of the BP-limb: 150, 180, and 200 cm. Weight loss outcomes after 1 and 3 years and resolution of comorbidities were compared between these groups. Results Of the 632 included patients, a BP-limb length of 150 cm was used in 172 (27.2%), 180 cm in 388 (61.4%), and 200 cm in 72 (11.4%) patients. Despite more BMI loss, %EWL was lower and attained BMI remained higher in the groups with longer BP-limb lengths. After adjustment for the confounder preoperative BMI, longer BP-limb lengths were not associated with higher BMI loss. There was no difference in remission rates of comorbidities. Conclusion Attained BMI remained higher in spite of tailoring BP-limb length according to baseline BMI with no differences in remission rates of comorbidities. Graphical Abstract ![]()
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32
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A Current and Newly Proposed Artificial Intelligence Algorithm for Reading Small Bowel Capsule Endoscopy. Diagnostics (Basel) 2021; 11:diagnostics11071183. [PMID: 34209948 PMCID: PMC8306692 DOI: 10.3390/diagnostics11071183] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 06/26/2021] [Accepted: 06/28/2021] [Indexed: 12/09/2022] Open
Abstract
Small bowel capsule endoscopy (SBCE) is one of the most useful methods for diagnosing small bowel mucosal lesions. However, it takes a long time to interpret the capsule images. To solve this problem, artificial intelligence (AI) algorithms for SBCE readings are being actively studied. In this article, we analyzed several studies that applied AI algorithms to SBCE readings, such as automatic lesion detection, automatic classification of bowel cleanliness, and automatic compartmentalization of small bowels. In addition to automatic lesion detection using AI algorithms, a new direction of AI algorithms related to shorter reading times and improved lesion detection accuracy should be considered. Therefore, it is necessary to develop an integrated AI algorithm composed of algorithms with various functions in order to be used in clinical practice.
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33
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Fernández-Real JM, Mayneris-Perxachs J. Is the jejunum the fulcrum of glucose metabolism? Gut 2021; 70:1005-1006. [PMID: 32994309 DOI: 10.1136/gutjnl-2020-322662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 09/08/2020] [Accepted: 09/08/2020] [Indexed: 12/08/2022]
Affiliation(s)
- Jose Manuel Fernández-Real
- Service of Diabetes, Endocrinology and Nutrition, Hospital Universitari de Girona Doctor Josep Trueta, Girona, Catalunya, Spain .,Department of Medical Sciences, Faculty of Medicine. University of Girona, Girona, Catalunya, Spain.,CIBER Pathophysiology of Obesity and Nutrition. Instituto de Salud Carlos III, Madrid, Spain
| | - Jordi Mayneris-Perxachs
- Endocrinology and Nutrition, Institut d'Investigació Biomèdica de Girona Dr Josep Trueta and Hospital Dr Josep Trueta, Girona, Catalunya, Spain
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34
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Roux-en-Y Gastric Bypass with Long Biliopancreatic Limb Compared to Single Anastomosis Sleeve Ileal (SASI) Bypass in Treatment of Morbid Obesity. Obes Surg 2021; 31:3615-3622. [PMID: 33942216 DOI: 10.1007/s11695-021-05457-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 04/23/2021] [Accepted: 04/27/2021] [Indexed: 12/13/2022]
Abstract
PURPOSE Bariatric surgery is the most effective treatment of morbid obesity. Bariatric procedures employ different mechanisms of action to induce weight loss. The present study aimed to compare single-anastomosis sleeve ileal (SASI) bypass and roux-en-Y gastric bypass RYGB with long biliopancreatic limb (BPL) in terms of weight loss, remission of comorbidities, complications, and nutritional status. METHODS This was a single-center cohort study on patients with morbid obesity who underwent RYGB with long BPL of 150 cm or SASI bypass. The main outcome measures were weight loss and improvement in comorbidities at 12 months, nutritional status, and complications. RESULTS The present study included 92 patients (59.8% females) of a mean age of 38.4 years and mean BMI of 42 kg/m2. RYGB and SASI bypass were followed by a significant decrease in body mass index at 12 months and were comparable in terms of excess and total weight loss. Improvement in comorbidities after the two procedures was similar. The serum albumin levels showed a significant decline after RYGB, but not after SASI bypass. The postoperative serum iron levels were higher after SASI bypass than after RYGB. There was no significant difference in regard to complication rates (13% vs 4.3%, p = 0.27). CONCLUSIONS RYGB with long BPL and SASI bypass achieved satisfactory weight loss and improvement in comorbidities that were comparable among the two groups. Long BPL RYGB was followed by a significant decrease in serum albumin and iron levels at one year, which was not observed after SASI bypass.
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35
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Käkelä P, Rantanen T, Virtanen KA. The Importance of Intestinal Length in Triglyceride Metabolism and in Predicting the Outcomes of Comorbidities in Laparoscopic Roux-en-Y Gastric Bypass-a Narrative Review. Obes Surg 2021; 31:3291-3295. [PMID: 33914241 PMCID: PMC8175306 DOI: 10.1007/s11695-021-05421-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2021] [Revised: 04/01/2021] [Accepted: 04/07/2021] [Indexed: 11/28/2022]
Abstract
In this narrative review, we will appraise if modification of the length of bypassed small intestine based on measured total small intestinal length could optimize the outcomes of the laparoscopic Roux-en-Y gastric bypass (LRYGB). We provide a summary of carefully selected studies to serve as examples and to draw tentative conclusions of the effects of LRYGB on remission of comorbidities. As the heterogeneity of the included studies varied in terms of outcomes, type of study, length of the bypassed small intestine, and the follow-up, a common endpoint could not be defined for this narrative article. To achieve efficient metabolic outcomes, it is important to carefully choose the small intestine length excluded from the food passage suited best to each individual patient. ![]()
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Affiliation(s)
- Pirjo Käkelä
- Department of Surgery, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland.
| | - Tuomo Rantanen
- Department of Surgery, University of Eastern Finland and Kuopio University Hospital, Kuopio, Finland
| | - Kirsi A Virtanen
- Department of Public Health and Clinical Nutrition, University of Eastern Finland, Kuopio, Finland.,Department of Endocrinology and Clinical Nutrition, Kuopio University Hospital, Kuopio, Finland
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36
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Pizza F, Lucido FS, D'Antonio D, Tolone S, Gambardella C, Dell'Isola C, Docimo L, Marvaso A. Biliopancreatic Limb Length in One Anastomosis Gastric Bypass: Which Is the Best? Obes Surg 2021; 30:3685-3694. [PMID: 32458362 DOI: 10.1007/s11695-020-04687-x] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
BACKGROUND The use of one anastomosis gastric bypass (OAGB) is rapidly spreading. Concerns about biliary reflux and malabsorption with consequent nutritional deficits exist, so studies on biliopancreatic limb (BPL) adequate length in OAGB are required to balance excess weight loss in percentage (% EWL), resolution of comorbidities, and nutritional deficit. The purpose was to evaluate, at 2 years after OAGB, the effects of BPL length on weight loss, resolution of comorbidity, and nutritional deficiencies in patients. METHODS From January 2015 to January 2017, 180 patients were collected into three groups based BPL length: group A, 150 cm; group B, 180 cm; and group C, 200 cm. Aims were to compare %EWL, co-morbidity resolution rates, nutritional parameters, and morbidity/mortality in the three groups. RESULTS The total number of patients was 180: 60 for each group. One hundred seventy-two (95%) patients attended the 1-year follow-up (group A = 58; group B = 58, group C = 56). One hundred fifty-seven (87%) patients attended the 2-year follow-up (group A = 52 (87%); group B = 53 (88%); group C = 52 (87%)). There was no statistically significant difference in %EWL, %TWL, T2DM, and hypertension resolution rates among the groups. About vitamin deficiency, differences were not statistically significant. Iron and ferritin deficiency rate were statistically significant only between A and C groups. CONCLUSIONS According to our evidence, standardization of BPL length shorter than 200 cm is suggested, potentially minimizing malnutrition-related outcomes. Our study seems to show that a BPL of 150-180 cm is safe and effective in terms of EWL and comorbidity improvement with low malnutrition effects even in BMI > 50.
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Affiliation(s)
- Francesco Pizza
- Division of Surgery, Hospital "A. Rizzoli", Lacco Ameno, Naples, Italy.
| | - Francesco Saverio Lucido
- Division of General, Mininvasive and Bariatric Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Dario D'Antonio
- Division of Surgery, Hospital "A. Rizzoli", Lacco Ameno, Naples, Italy
| | - Salvatore Tolone
- Division of General, Mininvasive and Bariatric Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Claudio Gambardella
- Division of General, Mininvasive and Bariatric Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | | | - Ludovico Docimo
- Division of General, Mininvasive and Bariatric Surgery, University of Campania "Luigi Vanvitelli", Naples, Italy
| | - Alberto Marvaso
- Division of Surgery, Hospital "A. Rizzoli", Lacco Ameno, Naples, Italy
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Efficacy and Drawbacks of Single-Anastomosis Duodeno-Ileal Bypass After Sleeve Gastrectomy in a Tertiary Referral Bariatric Center. Obes Surg 2021; 31:2691-2700. [PMID: 33834374 PMCID: PMC8113294 DOI: 10.1007/s11695-021-05323-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 02/23/2021] [Accepted: 02/23/2021] [Indexed: 12/13/2022]
Abstract
Background The need for revisional procedures after sleeve gastrectomy (SG) for insufficient weight loss or weight regain, gastroesophageal reflux, or other complications is reported to be 18–36% in studies with 10-year follow-up. Single-anastomosis duodeno-ileal bypass (SADI) may be performed as a revisional procedure after SG. This study aims to evaluate the short- and mid-term outcomes of SADI after SG in a referral center for bariatric surgery. Materials and Methods Data of patients who underwent SADI between March 2015 and March 2020 were collected prospectively and analyzed retrospectively. Follow-up comprised clinical and biochemical assessment at 1, 3, 6, 12, 18, and 24 months postoperatively, and once a year thereafter. Results Overall, 106 patients underwent SADI after a previous SG. The timeframe between SG and SADI was 50 ± 31.3 months. Postoperative mortality was observed in two cases (1.8%) and morbidity in 15.1% of patients. At 24 months, %total weight loss was 37.6 ± 12.3 and %excess weight loss 76.9 ± 25.2 (64 patients). Three patients were treated for malnutrition during follow-up, two with medical treatment and one with SADI reversal. Conclusion SADI after SG provides effective weight loss results in the short-term, even if in the present series the postoperative complication rate was non-negligible. Further trials are needed to establish the more advantageous revisional bariatric procedure after failed SG. Supplementary Information The online version contains supplementary material available at 10.1007/s11695-021-05323-y.
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Nightingale JMD. How to manage a high-output stoma. Frontline Gastroenterol 2021; 13:140-151. [PMID: 35300464 PMCID: PMC8862462 DOI: 10.1136/flgastro-2018-101108] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 01/13/2021] [Accepted: 02/08/2021] [Indexed: 02/04/2023] Open
Abstract
A high-output stoma (HOS) or fistula is when small bowel output causes water, sodium and often magnesium depletion. This tends to occur when the output is >1.5 -2.0 L/24 hours though varies according to the amount of food/drink taken orally. An HOS occurs in up to 31% of small bowel stomas. A high-output enterocutaneous fistula may, if from the proximal small bowel, behave in the same way and its fluid management will be the same as for an HOS. The clinical assessment consists of excluding causes other than a short bowel and treating them (especially partial or intermittent obstruction). A contrast follow through study gives an approximate measurement of residual small intestinal length (if not known from surgery) and may show the quality of the remaining small bowel. If HOS is due to a short bowel, the first step is to rehydrate the patient so stopping severe thirst. When thirst has resolved and renal function returned to normal, oral hypotonic fluid is restricted and a glucose-saline solution is sipped. Medication to slow transit (loperamide often in high dose) or to reduce secretions (omeprazole for gastric acid) may be helpful. Subcutaneous fluid (usually saline with added magnesium) may be given before intravenous fluids though can take 10-12 hours to infuse. Generally parenteral support is needed when less than 100 cm of functioning jejunum remains. If there is defunctioned bowel in situ, consideration should be given to bringing it back into continuity.
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Impact of gastrointestinal tract variability on oral drug absorption and pharmacokinetics: An UNGAP review. Eur J Pharm Sci 2021; 162:105812. [PMID: 33753215 DOI: 10.1016/j.ejps.2021.105812] [Citation(s) in RCA: 140] [Impact Index Per Article: 46.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2020] [Revised: 02/19/2021] [Accepted: 03/16/2021] [Indexed: 12/17/2022]
Abstract
The absorption of oral drugs is frequently plagued by significant variability with potentially serious therapeutic consequences. The source of variability can be traced back to interindividual variability in physiology, differences in special populations (age- and disease-dependent), drug and formulation properties, or food-drug interactions. Clinical evidence for the impact of some of these factors on drug pharmacokinetic variability is mounting: e.g. gastric pH and emptying time, small intestinal fluid properties, differences in pediatrics and the elderly, and surgical changes in gastrointestinal anatomy. However, the link of colonic factors variability (transit time, fluid composition, microbiome), sex differences (male vs. female) and gut-related diseases (chronic constipation, anorexia and cachexia) to drug absorption variability has not been firmly established yet. At the same time, a way to decrease oral drug pharmacokinetic variability is provided by the pharmaceutical industry: clinical evidence suggests that formulation approaches employed during drug development can decrease the variability in oral exposure. This review outlines the main drivers of oral drug exposure variability and potential approaches to overcome them, while highlighting existing knowledge gaps and guiding future studies in this area.
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Bariatric Surgery-How Much Malabsorption Do We Need?-A Review of Various Limb Lengths in Different Gastric Bypass Procedures. J Clin Med 2021; 10:jcm10040674. [PMID: 33578635 PMCID: PMC7916324 DOI: 10.3390/jcm10040674] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/06/2021] [Accepted: 02/07/2021] [Indexed: 12/18/2022] Open
Abstract
The number of obese individuals worldwide continues to increase every year, thus, the number of bariatric/metabolic operations performed is on a constant rise as well. Beside exclusively restrictive procedures, most of the bariatric operations have a more or less malabsorptive component. Several different bypass procedures exist alongside each other today and each type of bypass is performed using a distinct technique. Furthermore, the length of the bypassed intestine may differ as well. One might add that the operations are performed differently in different parts of the world and have been changing and evolving over time. This review evaluates the most frequently performed bariatric bypass procedures (and their variations) worldwide: Roux-en-Y Gastric Bypass, One-Anastomosis Gastric Bypass, Single-Anastomosis Duodeno-Ileal Bypass + Sleeve Gastrectomy, Biliopancreatic Diversion + Duodenal Switch and operations due to weight regain. The evaluation of the procedures and different limb lengths focusses on weight loss, remission of comorbidities and the risk of malnutrition and deficiencies. This narrative review does not aim at synthesizing quantitative data. Rather, it provides a summary of carefully selected, high-quality studies to serve as examples and to draw tentative conclusions on the effects of the bypass procedures mentioned above. In conclusion, it is important to carefully choose the procedure and small bowel length excluded from the food passage suited best to each individual patient. A balance has to be achieved between sufficient weight loss and remission of comorbidities, as well as a low risk of deficiencies and malnutrition. In any case, at least 300 cm of small bowel should always remain in the food stream to prevent the development of deficiencies and malnutrition.
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Haddad A, Bashir A, Fobi M, Higa K, Herrera MF, Torres AJ, Himpens J, Shikora S, Ramos AC, Kow L, Nimeri AA. The IFSO Worldwide One Anastomosis Gastric Bypass Survey: Techniques and Outcomes? Obes Surg 2021; 31:1411-1421. [PMID: 33517557 DOI: 10.1007/s11695-021-05249-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 01/15/2021] [Accepted: 01/20/2021] [Indexed: 02/06/2023]
Abstract
INTRODUCTION One anastomosis gastric bypass (OAGB) has become one of the most commonly performed gastric bypass procedures in some countries. OBJECTIVES To assess how surgeons viewed the OAGB, perceptions, indications, techniques, and outcomes, as well as the incidence of short- and long-term complications and how they were managed worldwide. METHODS A questionnaire was sent to all IFSO members in all 5 chapters to study the pattern of practice and outcomes of OAGB. RESULTS Seven hundred and forty-two surgeons responded. The most commonly performed procedures were sleeve gastrectomy (SG), Roux-en-Y gastric bypass (RYGB), and OAGB. Preoperatively, 70% of the surgeons performed endoscopy routinely. In regards to weight loss, 83% (570 surgeons) responded that OAGB produces better weight loss than SG, and 49% (342 surgeons) responded that OAGB produces better weight loss than RYGB. The most common length of the biliopancreatic limb (BPL) utilized was 200 cm. Sixty-seven percent of surgeons did not measure the total length of the small bowel. In patients with reflux disease and history of smoking, 53% and 22% of surgeons respectively still offered OAGB as a treatment option. Postoperatively, leak was documented in 963 patients, and it was the leading cause for mortality. Leak management was conservative in 35%. Conversion to RYGB was performed in 31%. In 16% the anastomosis was reinforced, 6% of the patients were reversed, and other procedures were performed in 12%. Revision of OAGB for malnutrition/steatorrhea or severe bile reflux was reported at least once by 37% and 45% of surgeons, respectively (200 cm was the most commonly encountered biliopancreatic limb BPL in those revised for malnutrition). Most common strategy for revision was conversion to RYGB (43%), reversal to normal anatomy (32%), shortening of the BPL (20%), and conversion to SG (5%). Nevertheless, 5 out of 98 mortalities (5%) were due to liver failure/malnutrition. CONCLUSION There are infrequent but potentially severe specific complications including malnutrition, liver failure, and bile reflux that may require surgical correction after OAGB.
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Affiliation(s)
- Ashraf Haddad
- Minimally Invasive & Bariatric Surgery, Gastrointestinal Bariatric and Metabolic Center (GBMC) -Jordan Hospital, Queen Noor St., 4th Circle, P.O BOX 3073, Amman, 11181, Jordan.
| | - Ahmad Bashir
- Minimally Invasive & Bariatric Surgery, Gastrointestinal Bariatric and Metabolic Center (GBMC) -Jordan Hospital, Queen Noor St., 4th Circle, P.O BOX 3073, Amman, 11181, Jordan
| | - Mathias Fobi
- Clinical Affairs and Research, Mohak Bariatric and Robotics, Indore, India
| | - Kelvin Higa
- Advanced Laparoscopic Surgery Associates, University of California San Francisco-Fresno, Fresno Heart and Surgical Hospital, Fresno, CA, USA
| | - Miguel F Herrera
- Endocrine and Bariatric Surgery, UNAM at INCMNSZ, Mexico City, México
| | - Antonio J Torres
- General and Bariatric Surgery, Complutense University of Madrid, Hospital Clinico "San Carlos", Madrid, Spain
| | - Jacques Himpens
- Metabolic-Bariatric Surgery, CHIREC Delta Hospital, Brussels, Belgium
- St Pierre University Hospital, Brussels, Belgium
| | - Scott Shikora
- Harvard Medical School, Center for Metabolic and Bariatric Surgery, Brigham and Women's Hospital, Boston, MA, USA
| | - Almino Cardoso Ramos
- Gastro-Obeso-Center Institute of Metabolic Optimization, Bela Vista, São Paulo, SP, Brazil
| | - Lilian Kow
- Adelaide Bariatric Centre, 12 The Parade, Norwood, SA, 5067, Australia
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Haddad A, Bashir A. The Hardship of Recovering a Patient from Liver Failure after One Anastomosis Gastric Bypass. Obes Surg 2021; 31:1395-1398. [PMID: 33417102 DOI: 10.1007/s11695-020-05210-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Revised: 12/23/2020] [Accepted: 12/29/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND The one anastomosis gastric bypass (OAGB) was first described in 2001 as a safe and effective procedure that meets the criteria for the "ideal" weight loss operation. However, revisions for malnutrition and liver failure were reported. CASE REPORT We report a patient who was transferred to our institution with protein calorie malnutrition and liver failure after undergoing OAGB. METHODS A 42-year-old morbidly obese female patient underwent a laparoscopic sleeve gastrectomy (LSG) in 2012 followed by conversion to OAGB in 2018 for weight regain at another institution. Nine months after conversion, she was transferred to our institution with dehydration, vomiting, dysphagia, generalized edema, and steatorrhea (7 times/day). She had become wheelchair bound. On examination, there was gross edema, protein-calorie malnutrition, dermatitis, and muscle wasting. She had anemia (8 g/dl) reference range (11.5-15.5 g/dl), bilirubin (1.8 mg/dl) (0.2-1.2 mg/dl), hypoalbuminemia (1.4 g/dl) (3.5-5 g/dl), and elevated international normalized ratio (INR). The patient was admitted to the hospital and was started on total parenteral nutrition (TPN), with thiamine, vitamins, iron injections, and trace mineral replacement. Her course was complicated by multiple episodes of line sepsis and bacteremia. After 6 weeks, we succeeded in raising her albumin to 2.9 g/dl and proceeded with surgery. TECHNIQUE Laparoscopic exploration started with identifying the anatomy and measuring the biliopancreatic limb (BPL = 430 cm) and the common channel (CC = 380 cm). First, we restored the continuity of the small bowel. Then the long gastric pouch was trimmed. Finally, the patient was converted to a Roux-en-Y gastric bypass (RYGB) with a 30 cm BP limb and 70 cm Roux limb. The patient had an uneventful recovery and was discharged home on the fourth postoperative day. At 3 months of follow-up, her symptoms resolved, her laboratory work up normalized, and she regained mobility. CONCLUSION Malnutrition and liver failure after OAGB are not uncommon. It is encountered with configurations of longer BP limb. BPL length of 150 to 200 cm seems to reduce such complications. Preoperative nutritional optimization is key. Conversion to a proximal RYGB is a safe and feasible approach.
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Affiliation(s)
- Ashraf Haddad
- Gastrintestinal, Bariatric, and Metabolic Center (GBMC), Jordan Hospital, Queen Noor St., 4th Circle, P.O BOX 3073, Amman, 11181, Jordan.
| | - Ahmad Bashir
- Gastrintestinal, Bariatric, and Metabolic Center (GBMC), Jordan Hospital, Queen Noor St., 4th Circle, P.O BOX 3073, Amman, 11181, Jordan
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Omega Loop Gastroileal Bypass (OLGIBP/SAGI) Versus One Anastomosis Gastric Bypass (OAGB): Medium-Term Results. Obes Surg 2021; 31:1597-1602. [PMID: 33409980 DOI: 10.1007/s11695-020-05165-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 12/01/2020] [Accepted: 12/09/2020] [Indexed: 10/22/2022]
Abstract
INTRODUCTION In bariatric surgery, new surgical techniques are continually being developed. The one anastomosis gastric bypass (OAGB) has become increasingly common since 2001. However, some patients experience bile reflux or excessive weight loss. This study aimed to assess a new bariatric procedure designed to avoid some of the drawbacks of conventional OAGB. MATERIAL AND METHODS To lower the complication rate and pathophysiological impact after OAGB, we performed an omega loop gastroileal bypass (OLGIBP/SAGI) with a 300-cm common limb. We compared this technique with OAGB. RESULTS Seventeen patients underwent OLGIBP and 23 underwent OAGB. Mean operative time was 108 min for OLGIBP vs 103 min for OAGB. The mean hospital length of stay was 3 days (1 to 7). No complications related to the gastroenterostomy occurred. At 3 years, among OAGB patients, there were 5 (21.7%) cases of bile reflux including 2 (8.7%) requiring a revision to Roux-en-Y gastric bypass. Among OLGIBP patients, there were 3 (17.6%) cases of bile reflux 1 (5.9%) requiring a revision to Roux-en-Y gastric bypass. There was no albumin deficiency. At 3 years, % of total weight loss (TWL) was 43.6 + - 6.2 in the OAGB group vs 48.2 + - 7.4 in the OLGIBP group. CONCLUSIONS The bariatric and metabolic outcomes of OLGIBP are expected to be similar to those of OAGB. The OLGIBP technique should reduce the risks of malnutrition and bile reflux. The two techniques can be safely performed and offer alternatives in bariatric surgery.
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DARONCH OT, AKAHANE HGK, BETTINI SDAC. PERDA DE PESO E O COMPRIMENTO DO INTESTINO DELGADO NA CIRURGIA DE FOBI-CAPELLA: HÁ RELAÇÃO? ABCD-ARQUIVOS BRASILEIROS DE CIRURGIA DIGESTIVA 2021; 34:e1634. [PMID: 35107496 PMCID: PMC8846462 DOI: 10.1590/0102-672020210002e1634] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/11/2021] [Accepted: 09/30/2021] [Indexed: 11/21/2022]
Abstract
Factors related to weight loss in obese patients undergoing bariatric surgery
have always been exhaustively studied in an attempt to propose the best surgical
technique with greater weight loss and long-term resolution of comorbidities.
Patients present anatomical variations regarding the length of the small
intestine. Some studies demonstrate weight changes in patients with different
lengths of the intestinal loops in the Roux-en-Y bypass technique. The present
work carried out a study on the influence of body mass index, weight loss, and
common loop length on long-term surgical outcomes.
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Ruiz-Tovar J, Carbajo MA, Jimenez JM, Luque-de-Leon E, Ortiz-de-Solorzano J, Castro MJ. Are There Ideal Small Bowel Limb Lengths for One-Anastomosis Gastric Bypass (OAGB) to Obtain Optimal Weight Loss and Remission of Comorbidities with Minimal Nutritional Deficiencies? World J Surg 2020; 44:855-862. [PMID: 31641833 DOI: 10.1007/s00268-019-05243-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Ideal jejunal and ileal lengths in bariatric/metabolic procedures to be left in alimentary continuity still remain unclear. We aimed to evaluate different lengths of biliopancreatic limb (BPL) and common limb (CL) performed in a series of patients submitted to OAGB, and correlate them with weight loss and nutritional deficits. PATIENTS AND METHODS A prospective observational study of 350 consecutive morbidly obese patients undergoing OAGB was performed. BPL and CL lengths were determined intraoperatively; BPL/TBL and CL/TBL ratios were then calculated. Anthropometric variables, remission of comorbidities and specific supplementation needs were recorded at 1, 2 and 5 years after surgery. RESULTS Three hundred patients were included for final analysis. BPL length and BPL/TBL ratio directly correlated with Units of BMI lost (UBMIL). Conversely, CL length and CL/TBL ratio showed an inverse correlation with UBMIL. Establishing a BMI ≤ 25 kg/m2 as ideal, the most accurate AUC, to predict achieving an ideal BMI at 1, 2 and 5 years after surgery, was obtained for the CL/TBL ratio, followed by the CL length at 1, 2 and 5 years. An ideal range was established between 0.40 and 0.43 for the CL/TBL ratio, and 200 to 220 cm for the CL length. Among these ranges, there were no cases of protein or calorie malnutrition. CONCLUSION TBL measurement is essential to obtain optimal outcomes after OAGB, both in terms of excellent weight loss and remission/improvement of comorbidities, as well as with a low risk of nutritional deficiencies. The CL/TBL ratio, followed by CL length, are the most accurate parameters to predict a 5-year postoperative BMI ≤ 25 kg/m2.
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Affiliation(s)
- Jaime Ruiz-Tovar
- Centre of Excellence for the Study and Treatment of Obesity and Diabetes, Calle Estacion, No. 12, 1°, 47004, Valladolid, Spain.
| | - Miguel A Carbajo
- Centre of Excellence for the Study and Treatment of Obesity and Diabetes, Calle Estacion, No. 12, 1°, 47004, Valladolid, Spain
| | - Jose M Jimenez
- Centre of Excellence for the Study and Treatment of Obesity and Diabetes, Calle Estacion, No. 12, 1°, 47004, Valladolid, Spain.
| | - Enrique Luque-de-Leon
- Centre of Excellence for the Study and Treatment of Obesity and Diabetes, Calle Estacion, No. 12, 1°, 47004, Valladolid, Spain
| | - Javier Ortiz-de-Solorzano
- Centre of Excellence for the Study and Treatment of Obesity and Diabetes, Calle Estacion, No. 12, 1°, 47004, Valladolid, Spain
| | - Maria J Castro
- Centre of Excellence for the Study and Treatment of Obesity and Diabetes, Calle Estacion, No. 12, 1°, 47004, Valladolid, Spain
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Almalki OM, Soong TC, Lee WJ, Chen JC, Wu CC, Lee YC. Variation in Small Bowel Length and Its Influence on the Outcomes of Sleeve Gastrectomy. Obes Surg 2020; 31:36-42. [PMID: 32914323 DOI: 10.1007/s11695-020-04958-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/28/2020] [Accepted: 09/02/2020] [Indexed: 10/23/2022]
Abstract
PURPOSE Small bowel length is drawing attention in the development of gastrointestinal bariatric/metabolic surgery, but the importance of the length of the small bowel in bariatric/metabolic is not clear. The present study was conducted to investigate variations in small bowel length and their clinical significance in patients undergoing laparoscopic sleeve gastrectomy (LSG). MATERIALS AND METHODS Small bowel length was measured in 620 patients diagnosed with obesity who underwent LSG between March 2014 and August 2018. Prospectively obtained demographic and clinical data were investigated, focusing on the association between small bowel length and weight loss. RESULTS Small bowel length varied widely among patients (mean 739.8 + 115.7 cm, range 380-1050 cm). Linear regression analysis revealed a significant association between small bowel length and body height, body weight, waist circumference, and serum levels of low-density lipoprotein cholesterol, hemoglobin, C-peptide, glycated hemoglobin (A1C), and gamma-glutamyl transferase (r-GT). Multivariate analysis confirmed that body height and serum A1C% levels independently predicted small bowel length in bariatric patients, strongly with body height (p < 0.001) but weakly with A1C%(p = 0.021). One-year follow-up rate was 75.3% (467/620), and small bowel length did not influence weight loss or the reduction of obesity related cardiovascular risk factors after LSG. CONCLUSION In this study, small bowel length varied widely among bariatric patients and was strongly associated with body height and weakly with serum A1C levels. Small bowel length has no significant role in weight loss or the resolution of cardiovascular risk factors after LSG.
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Affiliation(s)
- Owaid M Almalki
- Department of Surgery, College of Medicine, Taif University, Ta'if, Saudi Arabia.,Department of Surgery, Min-Sheng General Hospital, No. 168, Ching Kuo Road, Taoyuan, Taiwan
| | - Tien-Chou Soong
- Department of Weight Loss and Health Management Center, E-DA Dachang Hospital, Kaohsiung, Taiwan.,Department of Asia Obesity Medical Research Center, E-DA Hospital, Kaohsiung, Taiwan.,College of Medicine, I-Shou University, Kaohsiung, Taiwan
| | - Wei-Jei Lee
- Department of Surgery, Min-Sheng General Hospital, No. 168, Ching Kuo Road, Taoyuan, Taiwan.
| | - Jung-Chien Chen
- Department of Surgery, Min-Sheng General Hospital, No. 168, Ching Kuo Road, Taoyuan, Taiwan
| | - Chun-Chi Wu
- Department of Surgery, Min-Sheng General Hospital, No. 168, Ching Kuo Road, Taoyuan, Taiwan
| | - Yi-Chih Lee
- Department of International Business, Chien Hsin University, Taoyuan, Taiwan
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Purandare A, Phalgune D, Shah S. Variability of Length of Small Intestine in Indian Population and Its Correlation with Type 2 Diabetes Mellitus and Obesity. Obes Surg 2020; 29:3149-3153. [PMID: 31087236 DOI: 10.1007/s11695-019-03921-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
PURPOSE Previous studies have correlated small intestinal length with gender, age, weight, height and ethnic background. Some studies have reported a positive correlation of small intestinal length to body mass index (BMI). Some studies have shown that bypassing proximal small intestine can result in diabetes mellitus (DM) control. Present study was conducted to find correlation of small intestinal length with BMI and DM. MATERIALS AND METHODS Two hundred eighty-three patients aged between 18 and 60 years who underwent open or laparoscopic abdominal surgery were included. Height, weight, BMI, random blood sugar (RBS), HbA1c, etc. were noted. A standard 30-cm umbilical tape with 10 cm marking was used to measure the length of small intestine in laparotomy patients, whereas lap bowel graspers with marking of 10 cm on the shaft was used for laparoscopy patients. Statistical significance of normally distributed continuous variables was tested using independent sample t test. Spearman rank correlation was used to test association between two ranked variables. RESULTS The mean small intestinal length in Indian population was 777.1 cm with a standard deviation of 186.2 cm. Mean length of small intestine was significantly higher in patients who had HbA1c ≥ 6.5% and RBS levels ≥ 200 mg/dL. HbA1c and RBS showed significant but a weak positive correlation with length of small intestine. BMI did not show significant correlation with length of small intestine. CONCLUSION Small intestinal length had significant but a weak positive correlation in patients who had HbA1c ≥ 6.5% and RBS levels ≥ 200 mg/dL.
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Haddad A, Fobi M, Bashir A, Al Hadad M, ElFawal MH, Safadi B, Taha O, Abouzeid M, Alqahtani A, Nimeri A. Outcomes of One Anastomosis Gastric Bypass in the IFSO Middle East North Africa (MENA) Region. Obes Surg 2020; 29:2409-2414. [PMID: 30969389 DOI: 10.1007/s11695-019-03881-w] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
INTRODUCTION Since it was first described in 2001, the one anastomosis gastric bypass (OAGB) has been gaining popularity in the Middle East region and worldwide. We designed a survey to evaluate the trends, techniques, and outcomes of OAGB in our region. METHODS A questionnaire to study OAGB was sent to the members of the IFSO MENA chapter. RESULTS One-hundred and forty-eight surgeons (74%) responded. Forty-six percent of all respondents (64 surgeons) performed OAGB routinely. The most commonly performed procedures were the laparoscopic sleeve gastrostomy (LSG), followed by OAGB, and then Roux-en-Y (RYGB). Of the surgeons who responded, 65% did not perform routine pre-operative endoscopy. Seventy-two percent believed that OAGB produces better weight loss than the LSG while 58% did not believe it produced better results to RYGB. The most common length of biliopancreatic limb utilized was 200 cm, and 72% of surgeons did not measure the total length of the small bowel. Fifty percent of the surgeons offered OAGB as a treatment for acid reflux and 33% offered it to active smokers. Early complications included leak (< 1%), venous thromboembolism (< 1%), and mortality (< 0.5%) in most centers. Leaks were managed conservatively (23%), by conversion to RYGB (20%), reinforcing the anastomosis (19%), reversal to normal anatomy (6%), and others (32%). Of the total surgeons, 41% reported revising at least one patient for malnutrition and steatorrhea, and 32% reported revising at least one patient for sever bile reflux. CONCLUSION OAGB is a commonly performed and safe procedure in the MENA region. Malnutrition and bile reflux requiring surgical intervention are serious long-term concerns.
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Affiliation(s)
- Ashraf Haddad
- Minimally Invasive and Bariatric Surgery, Gastrointestinal Bariatric and Metabolic Center (GBMC)-Jordan Hospital, Queen Noor Street, Amman, 11152, Jordan.
| | - Mathias Fobi
- Mohak Bariatric and Robotics, SAIMS Campus, Indore - Ujjain State Highway, Indore, India
| | - Ahmad Bashir
- Minimally Invasive and Bariatric Surgery, Gastrointestinal Bariatric and Metabolic Center (GBMC)-Jordan Hospital, Queen Noor Street, Amman, 11152, Jordan
| | - Mohamed Al Hadad
- Bariatric Surgery, Healthpoint Hospital, Abu Dhabi, United Arab Emirates
| | - Mohamad Hayssam ElFawal
- Bariatric Surgery Clinic "BSC," Bariatric and Metabolic Unit, Makassed General Hospital Beirut, Beirut, Lebanon
| | - Basem Safadi
- Department of Surgery, Gilbert and Rose-Marie Chagoury School of Medicine, Lebanese American University, Beirut, Lebanon
| | - Osama Taha
- Bariatric and General Surgery, Assiut University, Assiut, Egypt
| | | | | | - Abdelrahman Nimeri
- Carolinas Bariatic/MIS Fellowship Program, Carolinas Weight Management, Carolinas Medical Center, Charlotte, NC, USA
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Impact of Biliopancreatic Limb Length (70 cm vs 120 cm), with Constant 150 cm Alimentary Limb, on Long-Term Weight Loss, Remission of Comorbidities and Supplementation Needs After Roux-En-Y Gastric Bypass: a Prospective Randomized Clinical Trial. Obes Surg 2020; 29:2367-2372. [PMID: 31104282 DOI: 10.1007/s11695-019-03717-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
BACKGROUND The best alimentary and biliopancreatic limb (BPL) lengths in the Roux-en-Y gastric bypass (RYGB) still remain unclear. The aim of this study was to compare the effect of a BPL of 70 vs 120 cm, with a constant AL of 150 cm on long-term weight loss, remission of comorbidities, and supplementation needs after RYGB. PATIENTS AND METHODS A prospective randomized study of morbidly obese patients undergoing RYGB was performed. Patients were randomized into two groups: those patients undergoing RYGB with a BPL of 70 cm (BPL 70 cm) and those ones undergoing RYGB with a BPL of 120 cm (BPL 120 cm). BMI, excess BMI loss (EBMIL), remission of comorbidities and specific vitamin and mineral supplementation needs at 1, 2, and 5 years were analyzed. RESULTS Two hundred fifty-three patients were included in each group. There were no significant differences in BMI, EBMIL and the remission of diabetes mellitus, hypertension, and dyslipidemia between groups at 1, 2, and 5 years after surgery. Patients from group BPL 120 cm required greater specific supplementation of vitamin B12, folic acid, and vitamin A during all the follow-up. CONCLUSION A RYGB with 120 cm BPL does not achieve greater weight loss or remission of comorbidities than a RYGB with 70 cm BPL but is associated with greater deficiencies of vitamin B12, vitamin A, and folic acid. TRIAL REGISTRATION ClinicalTrials.gov Identifier NCT03607305. https://clinicaltrials.gov/.
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Khrucharoen U, Juo YY, Chen Y, Dutson EP. Indications, Operative Techniques, and Outcomes for Revisional Operation Following Mini-Gastric Bypass-One Anastomosis Gastric Bypass: a Systematic Review. Obes Surg 2020; 30:1564-1573. [DOI: 10.1007/s11695-019-04276-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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