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Samarasinghe SNS, Leca B, Alabdulkader S, Dimitriadis GK, Davasgaium A, Thadani P, Parry K, Luli M, O'Donnell K, Johnson B, Abbara A, Seyfried F, Morman R, Ahmed AR, Hakky S, Tsironis C, Purkayastha S, le Roux CW, Franks S, Menon V, Randeva H, Miras AD. Bariatric surgery for spontaneous ovulation in women living with polycystic ovary syndrome: the BAMBINI multicentre, open-label, randomised controlled trial. Lancet 2024; 403:2489-2503. [PMID: 38782004 DOI: 10.1016/s0140-6736(24)00538-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/27/2023] [Revised: 03/11/2024] [Accepted: 03/14/2024] [Indexed: 05/25/2024]
Abstract
BACKGROUND Polycystic ovary syndrome (PCOS) is the most common cause of anovulatory infertility. Obesity exacerbates the reproductive complications of PCOS; however, the management of obesity in women with PCOS remains a large unmet clinical need. Observational studies have indicated that bariatric surgery could improve the rates of ovulatory cycles and prospects of fertility; however, the efficacy of surgery on ovulation rates has not yet been compared with behavioural modifications and medical therapy in a randomised trial. The aim of this study was to compare the safety and efficacy of bariatric surgery versus medical care on ovulation rates in women with PCOS, obesity, and oligomenorrhoea or amenorrhoea. METHODS In this multicentre, open-label, randomised controlled trial, 80 women older than 18 years, with a diagnosis of PCOS based on the 2018 international evidence-based guidelines for assessing and managing PCOS, and a BMI of 35 kg/m2 or higher, were recruited from two specialist obesity management centres and via social media. Participants were randomly assigned at a 1:1 ratio to either vertical sleeve gastrectomy or behavioural interventions and medical therapy using a computer-generated random sequence (PLAN procedure in SAS) by an independent researcher not involved with any other aspect of the clinical trial. The median age of the entire cohort was 31 years and 79% of participants were White. The primary outcome was the number of biochemically confirmed ovulatory events over 52 weeks, and was assessed using weekly serum progesterone measurements. The primary endpoint included the intention-to-treat population and safety analyses were per-protocol population. This study is registered with the ISRCTN registry (ISRCTN16668711). FINDINGS Participants were recruited from Feb 20, 2020 to Feb 1, 2021. 40 participants were assigned to each group and there were seven dropouts in the medical group and ten dropouts in the surgical group. The median number of ovulations was 6 (IQR 3·5-10·0) in the surgical group and 2 (0·0-4·0) in the medical group. Women in the surgical group had 2.5 times more spontaneous ovulations compared with the medical group (incidence rate ratio 2·5 [95% CI 1·5-4·2], p<0·0007). There were more complications in the surgical group than the medical group, although without long-term sequelae. There were 24 (66·7%) adverse events in the surgical group and 12 (30·0%) in the medical group. There were no treatment-related deaths. INTERPRETATION Bariatric surgery was more effective than medical care for the induction of spontaneous ovulation in women with PCOS, obesity, and oligomenorrhoea or amenorrhoea. Bariatric surgery could, therefore, enhance the prospects of spontaneous fertility in this group of women. FUNDING The Jon Moulton Charity Trust.
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Affiliation(s)
- Suhaniya N S Samarasinghe
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK; Department of Diabetes & Endocrinology, Imperial College Healthcare NHS Trust, London, UK
| | - Bianca Leca
- Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK; Warwick Medical School, University of Warwick, Warwick, UK
| | - Shahd Alabdulkader
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK; Department of Health Sciences, College of Health and Rehabilitation Sciences, Princess Nourah bint Abdulrahman University, Riyadh, Saudi Arabia.
| | - Georgios K Dimitriadis
- Obesity, Type 2 Diabetes and Immunometabolism Research Group, Faculty of Cardiovascular and Metabolic Medicine & Sciences, King's College London, London, UK
| | - Allan Davasgaium
- Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK; Warwick Medical School, University of Warwick, Warwick, UK
| | - Puja Thadani
- Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK; Warwick Medical School, University of Warwick, Warwick, UK
| | - Kate Parry
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Migena Luli
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Karen O'Donnell
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Brett Johnson
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Ali Abbara
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Florian Seyfried
- Department of Surgery, University of Würzburg, Würzburg, Germany
| | | | - Ahmed R Ahmed
- Department of Surgery, Imperial College London, London, UK
| | - Sherif Hakky
- Brunel University, Division of Life Sciences, London, UK
| | | | - Sanjay Purkayastha
- Imperial Weight Centre, Imperial College Healthcare NHS Trust, London, UK; Brunel University, Division of Life Sciences, London, UK
| | - Carel W le Roux
- Diabetes Control And Complications Centre, University College Dublin, Dublin, Ireland
| | - Stephen Franks
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK
| | - Vinod Menon
- Department of Surgery, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK; Warwick Medical School, University of Warwick, Warwick, UK
| | - Harpal Randeva
- Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK; Warwick Medical School, University of Warwick, Warwick, UK
| | - Alexander D Miras
- Department of Metabolism, Digestion and Reproduction, Imperial College London, London, UK; School of Medicine, Ulster University, Derry, UK
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Maslin K, Hart KH, Shawe J. Tackling the dual burden of malnutrition in pregnancy - pregnancy after weight loss surgery. Proc Nutr Soc 2024:1-9. [PMID: 38240086 DOI: 10.1017/s0029665124000077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
The dual burden of malnutrition is characterised by the coexistence of undernutrition alongside overweight/obesity and diet-related noncommunicable diseases. It is a paradox which disproportionately affects women and is applicable to those who become pregnant after weight loss surgery. Obesity before and during pregnancy is associated with increased risk of adverse perinatal outcomes in both mother and child. Overall lifestyle interventions targeting weight loss in the preconception period have not proven effective, with people, and women in particular, increasingly seeking weight loss surgery. In women with severe obesity, surgery may normalise hormonal abnormalities and improve fertility. In those who become pregnant after surgery, evidence suggests a better overall obstetric outcome compared to those with severe obesity managed conservatively; however, there is heightened risk of maternal nutritional deficiencies and infants born small for gestational age. Specifically, pregnancy soon after surgery, in the catabolic phase when rapid weight loss is occurring, has the potential for poor outcomes. Lifelong micronutrient supplementation is required, and there is considerable risk of malnutrition if nutritional aftercare guidelines are not adhered to. It is therefore recommended that pregnancy is delayed until a stable weight is achieved and is supported by individualised advice from a multidisciplinary team. Further research is required to better understand how weight loss surgery affects the chances of having a healthy pregnancy and to ultimately improve nutritional management and patient care. In this review, we aim to summarise the evidence and guidance around nutrition during pregnancy after weight loss surgery.
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Affiliation(s)
- Kate Maslin
- School of Nursing and Midwifery, University of Plymouth, Plymouth, Devon, UK
- Musgrove Park Hospital, Taunton & Somerset NHS Foundation Trust, Taunton, UK
| | - Kathryn H Hart
- School of Biosciences, University of Surrey, Guildford, UK
| | - Jill Shawe
- School of Nursing and Midwifery, University of Plymouth, Plymouth, Devon, UK
- Royal Cornwall Hospitals NHS Trust, Truro, Cornwall, UK
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