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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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2
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Wang A, Poliakin L, Sundaresan N, Vijayanagar V, Abdurakhmanov A, Thompson KJ, Mckillop IH, Barbat S, Bauman R, Gersin KS, Kuwada TS, Nimeri A. The Role of Total Alimentary Limb Length in Roux-En-Y Gastric Bypass – A Systematic Review. Surg Obes Relat Dis 2021; 18:555-563. [DOI: 10.1016/j.soard.2021.08.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Revised: 08/04/2021] [Accepted: 08/21/2021] [Indexed: 12/21/2022]
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3
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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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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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Süsstrunk J, Lazaridis II, Köstler T, Kraljević M, Delko T, Zingg U. Long-Term Outcome of Proximal Versus Very-Very Long Limb Roux-en-Y Gastric Bypass: the Roux-Limb to Common Channel Ratio Determines the Long-Term Weight Loss. Obes Surg 2020; 31:994-1003. [PMID: 33196977 DOI: 10.1007/s11695-020-05109-8] [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: 07/07/2020] [Revised: 10/29/2020] [Accepted: 11/10/2020] [Indexed: 12/17/2022]
Abstract
BACKGROUND The influence of the Roux limb (RL) length on weight loss in Roux-en-Y (RYGB)-type gastric bypass procedures is still unclear. This study analyzes the true impact of RL length by comparing the long-term outcomes of proximal RYGB (PRYGB) and very-very long limb RYGB (VVLL-RYGB). METHODS RL length in PRYGB was 150 cm. In VVLL-RYGB, common channel length was 100 cm. In both groups, biliopancreatic limbs measured 50-60 cm, resulting in equal total alimentary limb lengths. To adjust for pre-operative differences between groups, and to predict the long-term outcome, a mixed model analysis was performed. RESULTS Two hundred thirty-two patients with VVLL-RYGB (73.7% female, mean age 41.1 ± 10 years, initial BMI 45.8 ± 6.3 kg/m2) and 223 with PRYGB (83.9% female, mean age 38.5 ± 11 years, initial BMI 42.9 ± 4.9 kg/m2) were included. Mean follow-up was 9.4 ± 4 years in VVLL-RYGB and 5.3 ± 1.9 years in PRYGB. After 5 years, mean BMI reduction was 15.7 ± 5.9 kg/m2 in VVLL-RYGB and 11.9 ± 4.1 kg/m2 in PRYGB (p < 0.001), and mean %EWL was 78.3 ± 23.1% and 70.2 ± 23.7% (p = 0.002) with a follow-up rate of 78% and 75.9%, respectively. The mixed model analysis showed a significantly higher weight rebound after PRYGB. Frequency of revisional surgery (i.e., limb length alteration, pouch banding) was similar between VVLL-RYGB and PRYGB (25 vs. 29 revisions, p = 0.463). CONCLUSION The VVLL-RYGB has a significantly higher long-term BMI reduction and a significantly lower weight rebound. The length of the Roux limb significantly influences long-term outcome.
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Affiliation(s)
- Julian Süsstrunk
- Department of General Surgery, Limmattal Hospital, 8952, Zurich-Schlieren, Switzerland.
| | - Ioannis I Lazaridis
- Clarunis, University Center for Gastrointestinal and Liver Diseases, 4002, Basel, Switzerland
| | - Thomas Köstler
- Department of General Surgery, Limmattal Hospital, 8952, Zurich-Schlieren, Switzerland
| | - Marko Kraljević
- Clarunis, University Center for Gastrointestinal and Liver Diseases, 4002, Basel, Switzerland
| | - Tarik Delko
- Clarunis, University Center for Gastrointestinal and Liver Diseases, 4002, Basel, Switzerland
| | - Urs Zingg
- Department of General Surgery, Limmattal Hospital, 8952, Zurich-Schlieren, Switzerland
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6
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Souza NMM, Santos ACO, Santa-Cruz F, Guimarães H, Silva LML, de-Lima DSC, Ferraz ÁAB, Kreimer F. Nutritional impact of bariatric surgery: a comparative study of Roux-en-Y Gastric Bypass and Sleeve gastrectomy between patients from the public and private health systems. ACTA ACUST UNITED AC 2020; 47:e20202404. [PMID: 32555963 DOI: 10.1590/0100-6991e-20202404] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 02/28/2020] [Indexed: 12/25/2022]
Abstract
PURPOSE To compare the nutritional status follow up of patients who underwent Roux-en-Y gastric bypass (BGYR) and Sleeve gastrectomy (SG) in hospitals of the private and public health systems, in Pernambuco. METHODS This study included patients who underwent bariatric surgery in the public and private health systems, in Pernambuco, from 2008 to 2016. Anthropometric and biochemical (hemoglobin, B12, iron and ferritin) data were evaluated in the preoperative period and at 3, 6 and 12 months after the operation. RESULTS There were no significant difference between patients seen at the two health systems regarding the levels of hemoglobin, iron, anemia and vitamin B12. Patients who underwent the RYGB, presented with iron deficiency which was significantly lower for those in the private system, but only at the 3 month evaluation. Low levels of ferritin were observed at the 6 month evaluation, and patients in the private health system presented with the highest ferritin deficiency. The rate of surgical success was significantly higher in those patients undergoing the RYGB at the private system. CONCLUSIONS After a 12-month bariatric surgery follow-up, there was no statistically significant difference regarding micronutrient deficiency between patients followed up at the private and public health systems.
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Affiliation(s)
- Natália M M Souza
- Universidade Federal de Pernambuco (UFPE), Surgical post-graduation program, Recife, PE, Brasil
| | - Ana Célia O Santos
- Universidade Federal de Pernambuco (UFPE), Nutrition Department, Recife, PE, Brasil
| | - Fernando Santa-Cruz
- Universidade Federal de Pernambuco (UFPE), School of Medicine, Recife, PE, Brasil
| | - Henrique Guimarães
- Universidade Federal de Pernambuco (UFPE), School of Medicine, Recife, PE, Brasil
| | - Lucas M L Silva
- Universidade Federal de Pernambuco (UFPE), Genetics department, Recife, PE, Brasil
| | - Denise Sandrelly C de-Lima
- Hospital das Clínicas, Universidade Federal de Pernambuco (HC/UFPE), Nursing Department, Recife, PE, Brasil
| | - Álvaro A B Ferraz
- Universidade Federal de Pernambuco (UFPE), Department of surgery, Recife, PE, Brasil
| | - Flávio Kreimer
- Universidade Federal de Pernambuco (UFPE), Department of surgery, Recife, PE, Brasil
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7
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Nabil TM, Khalil AH, Mikhail S, Soliman SS, Aziz M, Antoine H. Conventional Versus Distal Laparoscopic One-Anastomosis Gastric Bypass: a Randomized Controlled Trial with 1-Year Follow-up. Obes Surg 2020; 29:3103-3110. [PMID: 31177364 DOI: 10.1007/s11695-019-03991-5] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND There is no consensus on the ideal small bowel length that should be bypassed in laparoscopic one-anastomosis gastric bypass (OAGB). This study aimed to compare the safety and efficacy of conventional versus distal techniques of laparoscopic OAGB. METHODS This randomized controlled trial involved 60 adults with morbid obesity scheduled for laparoscopic OAGB randomly assigned to one of the two techniques; conventional technique (fixed anastomosis 200 cm from the ligament of Treitz) and distal technique (anastomosis 400 cm from the ileocecal valve). Total small bowel length (TSBL) was measured in all cases. Quality of life was assessed using the Gastrointestinal Quality of Life Index (GIQLI). Outcome measures were excess body weight loss percentage (EBWL%), resolution of associated comorbidities, frequency of nutritional deficiencies, and quality of life. RESULTS No patients were lost to follow-up. The two groups were comparable in TSBL, EBWL%, and complete resolution of comorbidities up to 12 months. The percentage of afferent loop length to TSBL was significantly higher in the distal group (p < 0.001) but was not correlated with EBWL%. The levels of hemoglobin, cholesterol, triglycerides, iron, and albumin were significantly lower and parathormone hormone was higher in the distal group. The GIQLI score was significantly higher in the conventional group during follow-up. CONCLUSION OAGB achieves optimum results when the afferent loop length is 200 cm; bypassing more than 200 cm does not improve weight loss or comorbidity resolution. Measuring TSBL is recommended to avoid excessive small bowel shortening that increases the risk of nutritional consequences.
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Affiliation(s)
- Tamer M Nabil
- Department of General Surgery, Beni Suef University, Beni Suef, Egypt
| | - Ahmed H Khalil
- Department of General Surgery, Cairo University, Fom El Khalig, Cairo, Egypt.
| | - Sameh Mikhail
- Department of General Surgery, Cairo University, Fom El Khalig, Cairo, Egypt
| | - Salah S Soliman
- Department of General Surgery, Fayoum University, Faiyum, Egypt
| | - Mostafa Aziz
- Department of General Surgery, Cairo University, Fom El Khalig, Cairo, Egypt
| | - Halepian Antoine
- Department of General Surgery, Cairo University, Fom El Khalig, Cairo, Egypt
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8
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Kermansaravi M, Pishgahroudsari M, Kabir A, Abdolhosseini MR, Pazouki A. Weight loss after one-anastomosis/mini-gastric bypass - The impact of biliopancreatic limb: A retrospective cohort study. JOURNAL OF RESEARCH IN MEDICAL SCIENCES 2020; 25:5. [PMID: 32055245 PMCID: PMC7003543 DOI: 10.4103/jrms.jrms_117_19] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 08/17/2019] [Accepted: 10/24/2019] [Indexed: 12/26/2022]
Abstract
Background One-anastomosis/mini-gastric bypass (OAGB/MGB), as a popular bariatric surgery method, has many advantages; however, the biliopancreatic limb length (BPL) in this surgery is under debate. The aim of the study was to evaluate the effect of BPL on weight-loss outcome after OAGB/MGB. Materials and Methods A retrospective cohort study was performed on 653 patients who underwent OAGB/MGB with adjusted BPL based on preoperative body mass index (BMI) and patient's age, between 2010 and 2015 with 12-month follow-ups. Weight-loss outcomes and complications were analyzed in these patients, considering BPL. Results Weight, age, sex, and type 2 diabetes mellitus were the most contributory predictors as independent predictors of 12-month excess weight loss, respectively, and BPL was the least contributory predictor. Conclusion Tailoring BPL in OAGB/MGB based on patient's age and preoperative BMI seems to have acceptable results.
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Affiliation(s)
- Mohammad Kermansaravi
- Minimally Invasive Surgery Research Center, Iran University of Medical Sciences, Tehran, Iran.,Center of Excellence of International Federation for Surgery of Obesity and Metabolic Disorders, Tehran, Iran
| | | | - Ali Kabir
- Minimally Invasive Surgery Research Center, Iran 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 and Metabolic Disorders, Tehran, Iran
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Ahmed B, King WC, Gourash W, Hinerman A, Belle SH, Pomp A, Pories WJ, Courcoulas AP. Proximal Roux-en-Y gastric bypass: Addressing the myth of limb length. Surgery 2019; 166:445-455. [PMID: 31378475 PMCID: PMC6778033 DOI: 10.1016/j.surg.2019.05.046] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2019] [Revised: 04/11/2019] [Accepted: 05/09/2019] [Indexed: 02/06/2023]
Abstract
BACKGROUND Some studies suggest that changes in weight or metabolic outcomes are affected by the lengths of the gastrointestinal limbs in the Roux-en-Y gastric bypass. METHODS Participants (N = 1,770) underwent primary Roux-en-Y gastric bypass and were followed ≤7 years in the Longitudinal Assessment of Bariatric Surgery-2, a multicenter US cohort study. Alimentary limb and biliopancreatic limb lengths were measured according to research protocol; common channel was measured in a subsample (N = 547). Aimentary limb, biliopancreatic limb, and common channel ratio to total small bowel length were calculated. RESULTS Median presurgery body mass index was 46 (25th-75th percentile: 43-51) kg/m2. Medians (25th-75th percentiles) for alimentary limb length were 125 cm (100-150), for biliopancreatic limb length were 50 cm (50-60), and common channel length were 410 cm (322-520). Statistics for ratios to the small bowel length were 0.23 (0.18-0.27) for alimentary limb, 0.09 (0.07-0.10) for biliopancreatic limb, and 0.69 (0.63-0.73) for common length. There were no significant associations between alimentary limb, biliopancreatic limb, common channel, alimentary limb ratio, biliopancreatic limb ratio or common channel ratio, and either weight loss or improvement in cardiometabolic outcomes. CONCLUSION The common channel length in Roux-en-Y gastric bypass is highly variable between individuals. None of the limb lengths in this study, nor alimentary limb, biliopancreatic limb, or common channel ratios, seem to be related to weight loss or metabolic improvements >7 years.
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Affiliation(s)
- Bestoun Ahmed
- Department of Surgery, Division of Minimally Invasive Bariatric and General Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA
| | - Wendy C King
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA
| | - William Gourash
- Department of Surgery, Division of Minimally Invasive Bariatric and General Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA.
| | - Amanda Hinerman
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA
| | - Steven H Belle
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA; Biostatistics, Graduate School of Public Health, University of Pittsburgh, Pittsburgh, PA
| | - Alfons Pomp
- Department of Surgery, Division of GI Metabolic and Bariatric Surgery, Weill Cornell Medicine, New York, NY
| | - Walter J Pories
- Department of Surgery, Brody School of Medicine, East Carolina University, Greenville, NC
| | - Anita P Courcoulas
- Department of Surgery, Division of Minimally Invasive Bariatric and General Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA
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10
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Topart PA. Comment on: Distal gastric bypass: 2-m biliopancreatic limb construction with varying lengths of common channel. Surg Obes Relat Dis 2019; 15:1527-1528. [PMID: 31405815 DOI: 10.1016/j.soard.2019.06.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 06/29/2019] [Indexed: 01/07/2023]
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Schiavon CA, Santos RN, Santucci EV, Noujaim PM, Cavalcanti AB, Drager LF. Does the RYGB common limb length influence hypertension remission and cardiometabolic risk factors? Data from the GATEWAY trial. Surg Obes Relat Dis 2019; 15:211-217. [PMID: 30679036 DOI: 10.1016/j.soard.2018.11.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2018] [Revised: 11/20/2018] [Accepted: 11/20/2018] [Indexed: 12/20/2022]
Abstract
BACKGROUND Although Roux-en-Y gastric bypass (RYGB) results in significant weight loss and cardiometabolic risk factors improvements; there is no consensus whether limb lengths may influence these results. OBJECTIVE To evaluate the correlations between the common limb length (CLL) and hypertension remission rate, cardiometabolic risk factors, and nutritional parameters after RYGB. SETTINGS Private Hospital, Brazil. METHODS GATEWAY is a randomized trial designed to evaluate the efficacy of RYGB on hypertension improvement and other cardiometabolic risk factors in patients with grade I and II obesity compared with medical therapy. The follow-up was 1 year. We measured the entire bowel in all patients and used a 150-cm alimentary limb and a 100-cm biliopancreatic limb. Univariate logistic regression was used to estimate the relationship between CLL and hypertension remission. Pearson and Spearman correlation were used to evaluate the correlation between the CLL and the percentage changes of cardiometabolic risk factors and nutritional parameters. RESULTS From 100 randomized patients, 45 were submitted to RYGB and completed the follow-up. Mean CLL was 466.3 ± 86.4 cm. Of patients, 55.6% from the RYGB group showed remission of hypertension. CLL length was not significantly associated with hypertension remission (odds ratio [95% confidence interval] for 50 units increase in CLL: .97 [.68; 1.38], P = .88). Consistently, we found no correlations between CLL and all changes in cardiometabolic risk factors and nutritional parameters. CONCLUSIONS In a proximal RYGB, CLL does not influence hypertension remission, cardiometabolic risk factors, and nutritional parameters.
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Abstract
BACKGROUND AND AIMS Different bariatric procedures have been associated with variable weight loss and decrease in serum levels of lipids and lipoproteins. This variation could be partly related to the length of the small intestinal bypass. We evaluated the association of the small intestinal length with the non-alcoholic fatty liver disease (NAFLD) at baseline and with lipid metabolism before and after laparoscopic Roux-en-Y gastric bypass (LRYGB). METHODS Seventy consecutive morbidly obese patients were recruited to this prospective study. A standard 60-cm biliopancreatic limb (BPL) and 120-cm alimentary limb (AL) was performed, and thereafter, the common channel (CC) length was measured during elective LRYGB. Histological analysis of liver biopsy to diagnose NAFLD was performed. The mRNA expression of genes participating in the cholesterol and fatty acid metabolism in the liver was analyzed. RESULTS Female sex (p = 0.006), serum triglycerides (TG, p = 0.016), serum alanine aminotransferase (ALT, p = 0.007), and liver steatosis (p = 0.001) associated with the small intestinal length (BPL + AL + CC) at baseline. Association remained significant between levels of serum TG and CC length (p = 0.048) at 1-year follow-up. Liver mRNA expression of genes regulating cholesterol synthesis and bile metabolism did not associate with the baseline small intestinal length. CONCLUSIONS Our findings support the suggestions that small intestinal length regulates TG metabolism before and after LRYGB. Therefore, modification of the length of bypassed small intestine based on measured total small intestinal length could optimize the outcomes of the elective LRYGB.
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Common Limb Length Does Not Influence Weight Loss After Standard Laparoscopic Roux-En-Y Gastric Bypass. Obes Surg 2018; 26:1705-9. [PMID: 26660489 DOI: 10.1007/s11695-015-1992-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Although Roux-en-Y gastric bypass (RYGBP) has proven its reliability over time in terms of weight loss and resolution of comorbidities, there continues to be a significant controversy in terms of used limb lengths. In the classical RYGBP, most surgeons have reported an alimentary limb length (ALL) of 100 to 150 cm and a bilio-pancreatic limb length (BPLL) of 50 to 75 cm. On the other hand, the common limb length (CLL) remains unknown in all the patients. As it is theoretically related to the level of malabsorption, CLL could influence weight loss after RYGBP. MATERIALS AND METHODS We performed a laparoscopic RYGBP in 90 patients with a mean preoperative body mass index (BMI) of 44.8. ALL and BPLL were respectively fixed at 150 and 75 cm. A systematic intraoperative measurement of CLL was performed. RESULTS As expected, we found a great variation of the jejuno-ileal length and also of the CLL. We created three subgroups of patients: one with the entire population, one excluding the super-obese patients (BMI > 50) and the third one excluding the revisions. There was no statistically significant correlation between CLL and excess BMI loss (EBMIL) at 1, 3, 6 and 12 months of follow-up in each group. We also found a linear correlation between the jejuno-ileal length and the height of individuals. CONCLUSION With a fixed 150-cm ALL and a 75-cm BPLL, there is no evidence that the anatomical variations of CLL could influence weight loss after classical RYGBP.
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14
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Abstract
Single-anastomosis pylorus-preserving procedures (SAPPP) were recently introduced into bariatric surgery in order to combine the physiologic advantages of a post-pyloric reconstruction with the technical advantages of an omega loop. Surgery consists of a sleeve gastrectomy that is performed first, followed by a duodeno-enterostomy. Two main variants exist: proximal and distal SAPPP, with duodeno-jejunostomy and duodeno-ileostomy, respectively. This review describes the SAPPP reported in the literature and analyzes their outcomes in comparison with the most frequently performed bariatric techniques. Preliminary results appear as promising in terms of both safety and effectiveness on weight loss and comorbidities improvement.
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Contribution of Malabsorption to Weight Loss After Roux-en-Y Gastric Bypass: a Systematic Review. Obes Surg 2017; 27:2194-2206. [DOI: 10.1007/s11695-017-2762-y] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Karagul S, Kayaalp C, Kirmizi S, Tardu A, Ertugrul I, Tolan K, Sumer F. Influence of repeated measurements on small bowel length. SPRINGERPLUS 2016; 5:1828. [PMID: 27818866 PMCID: PMC5074942 DOI: 10.1186/s40064-016-3557-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/02/2016] [Accepted: 10/14/2016] [Indexed: 02/01/2023]
Abstract
Purpose Measurement of small bowel length (SBL) is a common procedure in gastrointestinal surgery. When required, repeated SBL measurements can be done during surgery. Our aim was to evaluate whether these repeated measurements differ in SBL results. Methods Small bowel length was measured during laparotomy in 28 patients between ligament of Treitz and caecum, using a standard measure, two times in each patient consecutively by two different surgeons from the anti-mesenteric border of the bowel. Results The median age was 33 (19–67) including 18 male. There were 16 healthy donors for living related liver transplantations. Second measurements, performed immediately after the first measurements, significantly shortened the measured SBLs in the same patients (580 ± 103 vs. 485 ± 78 cm, p < 0.001). Conclusions During surgery, repeated length measurements caused contractions in the small bowel and this resulted to a significant decrease in the SBL. This should be keep in mind to prevent mismeasurements.
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Affiliation(s)
- Servet Karagul
- Department of Surgery, Faculty of Medicine, Inonu University, Malatya, Turkey
| | - Cuneyt Kayaalp
- Department of Surgery, Faculty of Medicine, Inonu University, Malatya, Turkey
| | - Serdar Kirmizi
- Department of Surgery, Faculty of Medicine, Inonu University, Malatya, Turkey
| | - Ali Tardu
- Department of Surgery, Faculty of Medicine, Inonu University, Malatya, Turkey
| | - Ismail Ertugrul
- Department of Surgery, Faculty of Medicine, Inonu University, Malatya, Turkey
| | - Kerem Tolan
- Department of Surgery, Faculty of Medicine, Inonu University, Malatya, Turkey
| | - Fatih Sumer
- Department of Surgery, Faculty of Medicine, Inonu University, Malatya, Turkey
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Mahawar KK, Kumar P, Parmar C, Graham Y, Carr WRJ, Jennings N, Schroeder N, Balupuri S, Small PK. Small Bowel Limb Lengths and Roux-en-Y Gastric Bypass: a Systematic Review. Obes Surg 2016; 26:660-71. [PMID: 26749410 DOI: 10.1007/s11695-016-2050-2] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
There is currently no consensus on the combined length of small bowel that should be bypassed as biliopancreatic or alimentary limb for optimum results with Roux-en-Y gastric bypass. A number of different limb lengths exist, and there is significant variation in practice amongst surgeons. Inevitably, this means that some patients have too much small bowel bypassed and end up with malnutrition and others end up with a less effective operation. Lack of standardisation poses further problems with interpretation and comparison of scientific literature. This systematic review concludes that a range of 100-200 cm for combined length of biliopancreatic or alimentary limb gives optimum results with Roux-en-Y gastric bypass in most patients.
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Affiliation(s)
- Kamal K Mahawar
- Bariatric Unit, Sunderland Royal Hospital, Sunderland, SR4 7TP, UK.
| | - Parveen Kumar
- Department of General Surgery, Sir Charles Gairdner Hospital, Nedlands, WA, 6009, Australia
| | - Chetan Parmar
- Bariatric Unit, Sunderland Royal Hospital, Sunderland, SR4 7TP, UK
| | - Yitka Graham
- Bariatric Unit, Sunderland Royal Hospital, Sunderland, SR4 7TP, UK.,Department of Pharmacy, Health and Well-Being, University of Sunderland, Sunderland, SR1 3SD, UK
| | - William R J Carr
- Bariatric Unit, Sunderland Royal Hospital, Sunderland, SR4 7TP, UK
| | - Neil Jennings
- Bariatric Unit, Sunderland Royal Hospital, Sunderland, SR4 7TP, UK
| | | | - Shlok Balupuri
- Bariatric Unit, Sunderland Royal Hospital, Sunderland, SR4 7TP, UK
| | - Peter K Small
- Bariatric Unit, Sunderland Royal Hospital, Sunderland, SR4 7TP, UK
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Gupta RVN, Chamany T, Makam R. Does length of common limb influence remission of diabetes? Short-term results. J Minim Access Surg 2016; 12:54-7. [PMID: 26917920 PMCID: PMC4746976 DOI: 10.4103/0972-9941.152104] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND: Despite strict patient selection criteria, diabetes remission is not seen in all patients after gastric bypass. Can length of the common limb influence diabetes remission? AIM: To find if any correlation exists between the length of the common limb and remission of diabetes. STUDY DESIGN: Prospective study. MATERIALS AND METHODS: Twenty-five consecutive patients with Type II diabetes mellitus and a fasting C-peptide >1 ng/ml who underwent laparoscopic Roux-en-y gastric bypass were included. All patients had standard limb lengths and length of the common limb was measured in all patients. Patients were followed up and glycated haemoglobin (HbA1c) was repeated at 6 months postoperatively. Pre- and postoperative HbA1c were then correlated with the lengths of common limb to look for any relation. STATISTICAL ANALYSIS: Descriptive and inferential statistical analysis, analysis of variance (ANOVA). RESULTS: Of the 25 patients, 15 were females and 10 were males. The mean age was 44.16 years and the mean body mass index (BMI) was 43.96 kg/m2. Preoperative HbA1c varied from 5.8 to 12.3%. Length of the common limb varied from 210 to 790 cm (mean 470.4 cm). HbA1c at 6 months ranged from 4.8 to 7.7% (mean 5.81%). On comparison of preoperative and 6 months postoperative HbA1c and correlating with the length of common limb, we found that patients with a common limb of length <600 cm had a statistically significant improvement in HbA1c compared to those with >600 cm length (P = 0.004). CONCLUSION: A shorter common limb does appear to have better chances of resolution of Type II diabetes mellitus in our study, thus paving the way for further studies.
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Affiliation(s)
- Ramraj V Nagendra Gupta
- Department of Minimal Invasive, Metabolic and Bariatric Surgery, Vikram Hospital, Miller's Road, Opp. St. Anne's College, Bangalore, Karnataka, India
| | - Tulip Chamany
- Department of Minimal Invasive, Metabolic and Bariatric Surgery, Vikram Hospital, Miller's Road, Opp. St. Anne's College, Bangalore, Karnataka, India
| | - Ramesh Makam
- Department of Minimal Invasive, Metabolic and Bariatric Surgery, Vikram Hospital, Miller's Road, Opp. St. Anne's College, Bangalore, Karnataka, India
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Gadiot RPM, Grotenhuis BA, Biter LU, Dunkelgrun M, Zengerink HJJ, Feskens PBGM, Mannaerts GHH. Study protocol of the DUCATI-study: a randomized controlled trial investigating the optimal common channel length in laparoscopic gastric bypass for morbid obese patients. BMC OBESITY 2015. [PMID: 26217543 PMCID: PMC4511552 DOI: 10.1186/s40608-015-0059-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND Morbid obesity has become one of the most frequent chronic medical disorders in Western countries, affecting 1.5-2 % of the Dutch population. Currently, the laparoscopic Roux-Y gastric bypass is considered to be the most effective bariatric treatment option for morbid obesity as it results in adequate weight loss and a significant decrease in comorbidity. Although this technique has been applied for years, the optimal lengths of the three bowel limbs (alimentary limb, biliopancreatic limb, and common channel) in order to achieve maximal percentage excess weight loss with minimal side effects (i.e. malabsorption symptoms), are unknown. As 'normal' sized gastric bypasses achieve an average of 60 - 80 % excess weight loss after one year, one could hypothesize that afferent limb lengths should be longer in order to reduce the common channel length, thereby improving outcome in terms of excess weight loss. The aim of the current study is to investigate the effect of the length of the common channel in gastric bypass surgery for morbid obesity. In this randomized controlled trial the very long Roux limb gastric bypass will be compared to the standard gastric bypass, in order to conclude which option is the optimal therapeutic strategy in the morbidly obese patient. METHODS/DESIGN In this multicentre trial patients will be randomized either to a very long Roux limb gastric bypass with a fixed common channel length of 100 cm, or to a standard gastric bypass with a variable common channel length. The primary objective is to evaluate whether the very long Roux limb gastric bypass is superior in terms of percentage excess weight loss after one year follow-up compared to the standard gastric bypass. Secondary endpoints are quality-of-life, cure /improvement of obesity related comorbidity, complications, malnutrition, re-admission rate, and re-operation rate. DISCUSSION We hypothesize that our proposed distal LRYGB will provide for improved results concerning % EWL with an acceptable rate of (metabolic) complications. Our main point of interest is to determine if the distal LRYGB is a superior alternative to standard LRYGB in terms of percentage excess weight loss and to put more focus on the role of the common channel. Therefore we will perform this randomized controlled trial comparing both techniques, with % EWL as a primary outcome. TRIAL REGISTRATION CCMO registration number: NL43951.101.13 and Netherlands Trial Registry number: NTR4466.
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Affiliation(s)
- Ralph P M Gadiot
- Department of Surgery, Sint Franciscus Gasthuis, Rotterdam, The Netherlands
| | | | - L Ulas Biter
- Department of Surgery, Sint Franciscus Gasthuis, Rotterdam, The Netherlands
| | - Martin Dunkelgrun
- Department of Surgery, Sint Franciscus Gasthuis, Rotterdam, The Netherlands
| | - Hans J J Zengerink
- Department of Surgery, Sint Franciscus Gasthuis, Rotterdam, The Netherlands
| | - Pierre B G M Feskens
- Department of Bariatric Surgery, Lievensberg Ziekenhuis, Bergen op Zoom, The Netherlands
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Abstract
BACKGROUND Roux-en-Y gastric bypass (RYGB) interferes considerably with the anatomy and physiology of the gastrointestinal tract. The study of intestinal permeability can provide important information regarding changes in the structure and function of the mucosal barrier after the procedure. METHODS The urinary excretion rates of lactulose and mannitol after oral intake of both substances were evaluated. We also evaluated the lactulose/mannitol excretion ratio. Tests were performed during the preoperative period (T0), at the first postoperative month (T1), and at the sixth postoperative month (T6). RESULTS The study included 16 morbidly obese patients. The excretion rate of mannitol was significantly lower at T1 compared with T0 and T6 (p = 0.003). There was no significant difference in the excretion rates of lactulose or in the lactulose/mannitol ratio during the three periods. Six patients (37.5%) exhibited a considerable increase in the excretion rate of lactulose at T6 (4-73 times higher than the preoperative value), accompanied by proportional variations in the lactulose/mannitol ratio. CONCLUSIONS The significant increase in mannitol excretion rate from T1 to T6 most likely reflects the occurrence of intestinal adaptation (mucosal hyperplasia), which would tend to minimize the malabsorption of macronutrients. A subgroup of patients who undergo RYGB exhibit pronounced increase in their intestinal permeability (assessed by the lactulose/mannitol ratio and the lactulose excretion rate) at T6.
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Bowel length: measurement, predictors, and impact on bariatric and metabolic surgery. Surg Obes Relat Dis 2014; 11:328-34. [PMID: 25614357 DOI: 10.1016/j.soard.2014.09.016] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2014] [Revised: 09/04/2014] [Accepted: 09/11/2014] [Indexed: 02/06/2023]
Abstract
BACKGROUND Small bowel length (SBL) determines the caloric absorptive capacity. The aim of this study was to evaluate SBL to identify patient-specific predictors and the interrelationships of SBL with anthropometric variables. METHODS Sex, age, and weight were recorded at the time of surgery when SBL and the estimated jejunal length (JLe) were measured by 3 different methods. RESULTS The mean SBL of 443 patients undergoing laparotomy (78% female) was 690±93.7 cm (range 350-1049 cm). Sex was correlated with SBL, as men had a longer small bowel than women (729±85 versus 678±92, P<.0001) and were significantly taller (173±8.2 versus 161±6.9, P<.001). Age did not correlate with SBL. The differences in length between fully stretched small bowel and nonstretched small bowel and between fully stretched small bowel and laparoscopic bowel were 137±19 cm and 32.4±11.4 cm, respectively. In a multivariate linear regression analysis model that included sex, age, height, and weight, only height was significantly correlated with SBL (P<.00001) and explained 12% of the variance in SBL. Sex, age, height, and JLe, but not SBL, were statistically highly significant in predicting 75% of the variance of body weight. CONCLUSIONS A positive association between height and SBL was found. Sex, age, height, and JLe may be strong predictors of weight. Individual JLe may be of importance in determining the weight loss and resolution of metabolic co-morbidities. Measuring the SBL can prevent the risk of nutritional consequences in malabsorptive, revisional, and metabolic procedures.
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23
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The influence of the percentage of the common limb in weight loss and nutritional alterations after laparoscopic gastric bypass. Surg Obes Relat Dis 2014; 10:829-33. [DOI: 10.1016/j.soard.2014.06.009] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2013] [Revised: 05/30/2014] [Accepted: 06/01/2014] [Indexed: 11/19/2022]
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Grueneberger JM, Karcz-Socha I, Marjanovic G, Kuesters S, Zwirska-Korczala K, Schmidt K, Karcz WK. Pylorus preserving loop duodeno-enterostomy with sleeve gastrectomy - preliminary results. BMC Surg 2014; 14:20. [PMID: 24725654 PMCID: PMC3994519 DOI: 10.1186/1471-2482-14-20] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2013] [Accepted: 03/27/2014] [Indexed: 01/22/2023] Open
Abstract
Background Bariatric operations mostly combine a restrictive gastric component with a rerouting of the intestinal passage. The pylorus can thereby be alternatively preserved or excluded. With the aim of performing a “pylorus-preserving gastric bypass”, we present early results of a proximal postpyloric loop duodeno-jejunostomy associated with a sleeve gastrectomy (LSG) compared to results of a parallel, but distal LSG with a loop duodeno-ileostomy as a two-step procedure. Methods 16 patients underwent either a two-step LSG with a distal loop duodeno-ileostomy (DIOS) as revisional bariatric surgery or a combined single step operation with a proximal duodeno-jejunostomy (DJOS). Total small intestinal length was determined to account for inter-individual differences. Results Mean operative time for the second-step of the DIOS operation was 121 min and 147 min for the combined DJOS operation. The overall intestinal length was 750.8 cm (range 600-900 cm) with a bypassed limb length of 235.7 cm in DJOS patients. The mean length of the common channel in DIOS patients measured 245.6 cm. Overall excess weight loss (%EWL) of the two-step DIOS procedure came to 38.31% and 49.60%, DJOS patients experienced an %EWL of 19.75% and 46.53% at 1 and 6 months, resp. No complication related to the duodeno-enterostomy occurred. Conclusions Loop duodeno-enterosomies with sleeve gastrectomy can be safely performed and may open new alternatives in bariatric surgery with the possibility for inter-individual adaptation.
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Affiliation(s)
- Jodok Matthias Grueneberger
- Department of General and Visceral Surgery, University of Freiburg, Hugstetter Strasse 55, 79106 Freiburg, Germany.
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Short versus long Roux-limb length in Roux-en-Y gastric bypass surgery for the treatment of morbid and super obesity: a systematic review of the literature. Obes Surg 2011; 21:797-804. [PMID: 21479976 DOI: 10.1007/s11695-011-0409-y] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Because of an important burden of disease, obesity is a major public health challenge in the twenty-first century. Where medico-psychological management has shown its limitations, bariatric surgery is now acknowledged as the most efficient therapy potentially offered to severely obese patients. Among other options, Roux-en-Y gastric bypass (RYGBP) is the most frequently performed procedure. The objective of this review is to systematically evaluate the effect of the Roux- (alimentary) limb length on postoperative weight loss after RYGBP in severely obese patients. MEDLINE, EMBASE and the Cochrane Central Register of Controlled Trials (CENTRAL) were searched using terms related to Roux-limb, gastric bypass and obesity. To be included, studies had to be either randomized controlled trials, quasi-randomized controlled trials or prospective cohort studies comparing a shorter to a longer Roux-limb. Studies were critically appraised with regard to methodological components. Eight studies were reviewed. Variations in methodology, operation design and outcome assessment among studies caused considerable clinical heterogeneity, preventing us from performing a meta-analysis. The overall quality was questionable, owing to lack of rigor in methodological components reporting. Results were heterogeneous, but we identified a trend supporting that the construction of a longer Roux-limb is more efficient in super obese patients. This review suggests that the tailoring of a longer Roux-limb might only be efficient in super obese patients. The overall limited quality of the included studies prompts to call for improvement in trial design in surgery.
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Stefanidis D, Kuwada TS, Gersin KS. The importance of the length of the limbs for gastric bypass patients--an evidence-based review. Obes Surg 2011; 21:119-24. [PMID: 20680504 DOI: 10.1007/s11695-010-0239-3] [Citation(s) in RCA: 85] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The ideal length of the gastric bypass limbs is debated. Recent evidence suggests that standard limb lengths used today have a limited impact on patient weight loss. Our objective was to appraise critically the available evidence on the influence of the length of gastric bypass limbs on weight loss outcomes. We systematically reviewed MEDLINE, the Cochrane database of evidence-based reviews, and the Database of Abstracts of Reviews of Effects for articles reporting the effect of gastric bypass length on outcomes published between 1987 and 2009. Four randomized controlled trials and several retrospective studies were identified and reviewed. Longer Roux limb lengths (at least 150 cm) were associated with a very modest weight loss advantage in the short term in superobese patients. No significant impact of alimentary limb length on weight loss for patients with body mass index (BMI) <50 was seen. When the length of the common channel approaches 100 cm, a significant impact on weight loss is observed. The currently available literature supports the notion that a longer Roux limb (at least 150 cm) may be associated with a very modest weight loss advantage in the short term in superobese patients but has no significant impact on patients with BMI ≤50. To achieve weight loss benefit due to malabsorption, bariatric surgeons should focus on the length of the common channel rather than the alimentary or biliopancreatic limbs when constructing a gastric bypass especially in the superobese population where failure rates after conventional gastric bypass are higher.
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Affiliation(s)
- Dimitrios Stefanidis
- Division of Gastrointestinal and Minimally Invasive Surgery, Department of General Surgery, Carolinas Weight Management and Wellness Center, Carolinas Medical Center, Charlotte, NC 28203, USA.
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Odstrcil EA, Martinez JG, Santa Ana CA, Xue B, Schneider RE, Steffer KJ, Porter JL, Asplin J, Kuhn JA, Fordtran JS. The contribution of malabsorption to the reduction in net energy absorption after long-limb Roux-en-Y gastric bypass. Am J Clin Nutr 2010; 92:704-13. [PMID: 20739420 DOI: 10.3945/ajcn.2010.29870] [Citation(s) in RCA: 148] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Roux-en-Y gastric bypass (RYGB) restricts food intake, and when the Roux limb is elongated to 150 cm, the procedure is believed to induce malabsorption. OBJECTIVE Our objective was to measure total reduction in intestinal absorption of combustible energy after RYGB and the extent to which this was due to restriction of food intake or malabsorption of ingested macronutrients. DESIGN Long-limb RYGB was performed in 9 severely obese patients. Dietary intake and intestinal absorption of fat, protein, carbohydrate, and combustible energy were measured before and at 2 intervals after bypass. By using coefficients of absorption to measure absorptive function, equations were developed to calculate the daily gram and kilocalorie quantities of ingested macronutrients that were not absorbed because of malabsorption or restricted food intake. RESULTS Coefficients of fat absorption were 92 ± 1.3% before bypass, 72 ± 5.5% 5 mo after bypass, and 68 ± 8.7% 14 mo after bypass. There were no statistically significant effects of RYGB on protein or carbohydrate absorption coefficients, although protein coefficients decreased substantially in some patients. Five months after bypass, malabsorption reduced absorption of combustible energy by 124 ± 57 kcal/d, whereas restriction of food intake reduced energy absorption by 2062 ± 271 kcal/d. Fourteen months after bypass, malabsorption reduced energy absorption by 172 ± 60 kcal/d compared with 1418 ± 171 kcal/d caused by restricted food intake. CONCLUSION On average, malabsorption accounted for ≈6% and 11% of the total reduction in combustible energy absorption at 5 and 14 mo, respectively, after this gastric bypass procedure.
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