Imperial College London

Mr Ahmed R. Ahmed PhD FRCS

Faculty of MedicineDepartment of Surgery & Cancer

Clinical Reader in Metabolic Surgery
 
 
 
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Contact

 

+44 (0)20 8846 1081a.ahmed07

 
 
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Location

 

Charing Cross HospitalCharing Cross Campus

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Summary

 

Publications

Publication Type
Year
to

259 results found

Szepietowski O, Alsters S, Mahir G, Murphy J, Ozdemir E, Murphy K, Dovey T, Le Roux C, Tan T, Ahmed A, Chahal H, Purkayastha S, Blakemore Aet al., 2019, Recent-Onset Type 2 Diabetes Is Defined As <10 Years Duration, 10th Annual Scientific Meeting of the British-Obesity-and-Metabolic-Surgery-Society (BOMSS), Publisher: SPRINGER, Pages: S11-S11, ISSN: 0960-8923

Conference paper

Kaur V, Bansi D, Lopes MM, Cousins J, Ahmed Aet al., 2019, Utility of the Apollo OverStitch Device for the endoscopic revision of the gastro-jejunal stoma in patients with weight regain after Roux-en-Y gastric bypass (RYGB), 10th Annual Scientific Meeting of the British-Obesity-and-Metabolic-Surgery-Society (BOMSS), Publisher: SPRINGER, Pages: S23-S23, ISSN: 0960-8923

Conference paper

Markakis H, Mok JKW, Aggarwal R, Ahmed Aet al., 2019, Laparoscopic transgastric interventions in bariatric surgery: indications and technique, 10th Annual Scientific Meeting of the British-Obesity-and-Metabolic-Surgery-Society (BOMSS), Publisher: SPRINGER, Pages: S14-S14, ISSN: 0960-8923

Conference paper

Kamocka A, Perez-Pevida B, Miras AD, Markakis H, Castagneto-Gissey L, Casella J, Villa F, Panagiotopoulos S, Reyhani A, Petronio B, Patel A, Tan T, Moorthy K, Purkayastha S, Ahmed AR, Bloom S, Rubino Fet al., 2019, Total small bowel length varies considerably among patients with obesity and diabetes: Is there a role for individualisation of limb lengths in Roux-en-Y gastric bypass?, 10th Annual Scientific Meeting of the British-Obesity-and-Metabolic-Surgery-Society (BOMSS), Publisher: SPRINGER, Pages: S11-S11, ISSN: 0960-8923

Conference paper

Ghanem A, Palmer A, Brown E, Dor F, Ahmed Aet al., 2019, Sleeve gastrectomy in a patient with Continuous Ambulatory Peritoneal Dialysis, 10th Annual Scientific Meeting of the British-Obesity-and-Metabolic-Surgery-Society (BOMSS), Publisher: SPRINGER, Pages: S15-S15, ISSN: 0960-8923

Conference paper

Mansour S, Ahmed A, 2019, Challenges during Revisional Bariatric Surgery, 10th Annual Scientific Meeting of the British-Obesity-and-Metabolic-Surgery-Society (BOMSS), Publisher: SPRINGER, Pages: S13-S13, ISSN: 0960-8923

Conference paper

Markakis H, Ahmed A, Pring C, Hawkins Wet al., 2019, Evaluation of the learning curve for primary laparoscopic Roux-en-Y gastric bypass and sleeve gastrectomy, 10th Annual Scientific Meeting of the British-Obesity-and-Metabolic-Surgery-Society (BOMSS), Publisher: SPRINGER, Pages: S7-S7, ISSN: 0960-8923

Conference paper

Markakis H, Mok J, Aggarwal R, Ahmed Aet al., 2019, Weight regain post Roux-en-Y gastric bypass: presentation of different revisional options, 10th Annual Scientific Meeting of the British-Obesity-and-Metabolic-Surgery-Society (BOMSS), Publisher: SPRINGER, Pages: S13-S13, ISSN: 0960-8923

Conference paper

Ahmad SJS, Ahmed AR, Exadaktylos AK, McWhinnie D, Nickel F, Hakky SM, Ramdin A, Mueller PCet al., 2018, Systematic review on citation classics in minimally invasive gastrointestinal surgery, JOURNAL OF MINIMAL ACCESS SURGERY, Vol: 14, Pages: 265-272, ISSN: 0972-9941

Journal article

Borisenko O, Lukyanov V, Ahmed AR, 2018, Cost – utility analysis of bariatric surgery, British Journal of Surgery, Vol: 105, Pages: 1328-1337, ISSN: 1365-2168

Background:The objective of the study was to evaluate the cost–utility of bariatric surgery in England.Methods:A state-transition Markov model was developed to compare the costs and outcomes of twotreatment approaches for patients with morbid obesity: bariatric surgery, including gastric bypass, sleevegastrectomy and adjustable gastric banding; and non-surgical usual care. Parameters of the effectivenessof surgery and complications were informed by data from the UK National Bariatric Surgery Registry, theScandinavian Obesity Registry and the Swedish Obese Subjects study. Costs and utilities were informedby UK sources.Results:Bariatric surgery was associated with reduced mean costs to the health service by €2742 (£1944),and gain of 0⋅8 life-years and 4⋅0 quality-adjusted life years (QALYs) over a lifetime compared with usualcare. Bariatric surgery also had the potential to reduce the lifetime risks of obesity-related cardiovasculardiseases and diabetes. Delaying surgery for up to 3 years resulted in a reduction of 0⋅7 QALYs and a minordecrease of €2058 (£1459) in associated healthcare costs.Conclusion:Currently used surgical methods were found to be cost saving over the lifetime of individualstreated in England. Delays in surgical provision can lead to a loss of clinical benefits.

Journal article

Kamocka A, McGlone ER, Pevida BP, Purkayastha S, Moorthy K, Hakky S, Chahal H, Tsironis C, Miras AD, Tan T, Ahmed Aet al., 2018, SURGICAL REVISION OF CANDY CANE AFTER ROUX-EN-Y GASTRIC BYPASS, 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 232-232, ISSN: 0960-8923

Conference paper

Tharakan G, Miras A, Chahal H, Moorthy K, Purkayastha S, Tan T, Ahmed Aet al., 2018, BARIATRIC SURGERY OUTCOMES IN THE OVER-60S: A SINGLE CENTRE, OBSERVATIONAL STUDY FROM 2007-2012., 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 376-376, ISSN: 0960-8923

Conference paper

Tharakan G, Miras A, Chahal H, Tan T, Ahmed Aet al., 2018, MANAGEMENT OF POST PRANDIAL HYPOGLYCAEMIA USING LIRAGLUTIDE -COMPREHENSIVE PROFILING PRE AND POST INTERVENTION, 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 378-378, ISSN: 0960-8923

Conference paper

Tan M, Purkayastha S, Moorthy K, Hakky S, Ahmed Aet al., 2018, ONE ANASTOMOSIS GASTRIC BYPASS - A VIABLE OPTION FOR REVISION BARIATRIC SURGERY, 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 370-370, ISSN: 0960-8923

Conference paper

Ahmed A, Cousins J, 2018, ANAESTHETIC AND BARIATRIC SURGEON COLLABORATION TO ENHANCE BARIATRIC SURGERY OUTCOMES, 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 286-286, ISSN: 0960-8923

Conference paper

Bansi D, Lopes M, Clark J, Cousins J, Ahmed Aet al., 2018, USE OF APOLLO OVERSTITCH DEVICE FOR ENDOSCOPIC REVISION OF ROUX-EN-Y GASTRIC BYPASS : THE IMPERIAL COLLEGE, LONDON EXPERIENCE, 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 275-275, ISSN: 0960-8923

Conference paper

Markakis HC, Ahmed A, 2018, TACKLING WEIGHT RECIDIVISM IN ROUX-EN-Y GASTRIC BYPASS BY BILIOPANCREATIC LIMB LENGTHENING AND POUCH REVISION: A SIMPLE STEP BY STEP APPROACH, 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 168-168, ISSN: 0960-8923

Conference paper

Markakis HC, Ahmed A, 2018, LAPAROSCOPIC REVISION OF SLEEVE GASTRECTOMY TO ROUX-EN-Y GASTRIC BYPASS FOR REFLUX AND DYSPHAGIA AFTER FAILED REPAIR OF RECURRENT HIATUS HERNIA, 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 145-145, ISSN: 0960-8923

Conference paper

Markakis HC, Ahmed A, 2018, REVISION OF GASTRIC BAND TO ONE ANASTOMOSIS GASTRIC BYPASS: TIPS & TRICKS, 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 144-144, ISSN: 0960-8923

Conference paper

Aggarwal R, Hakky S, Ahmed A, 2018, ACUTE DYSPHAGIA POST SLEEVE GASTRECTOMY, 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 156-156, ISSN: 0960-8923

Conference paper

Ahmed A, Makwana N, Alasfour S, Al Mughamis Net al., 2018, BARIATRIC EMBOLISATION (LGAE) IS MORE EFFECTIVE THAN MODIFICATION OF LIFESTYLE FACTORS FOR WEIGHT LOSS OVER A 12 MONTH PERIOD. A SYSTEMATIC REVIEW., 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 460-460, ISSN: 0960-8923

Conference paper

Markakis HC, Ahmed A, Moorthy K, 2018, MINIMALLY INVASIVE TRANSGASTRIC APPROACH TO REMOVAL OF THE DUODENAL-JEJUNAL BYPASS LINER FOLLOWING FAILED ENDOSCOPIC APPROACH, 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 169-169, ISSN: 0960-8923

Conference paper

Clark J, Petrou N, Komocha A, Alasfour S, Yung P, Scott-Angel H, McLauchlan K, Al Mughamis N, Robinson A, Hakky S, Tsironis C, Moorthy K, Purkayastha S, Ahmed Aet al., 2018, REFRACTORY CHRONIC PAIN POST ROUX-EN Y GASTRIC BYPASS; DEFINING A MANAGEMENT STRATEGY., 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 207-207, ISSN: 0960-8923

Conference paper

McGlone ER, Tan M, Purkayastha S, Tan T, Ahmed Aet al., 2018, FEASIBILITY OF SINGLE STAGE REVISION OF GASTRIC BAND TO MINI-GASTRIC BYPASS Gastric Bypass Procedures Including RYGB And OAGB/MGB, 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 93-93, ISSN: 0960-8923

Conference paper

Almughamis N, Alasfour S, Ahmed A, 2018, AUDIT: PATIENTS SATISFACTION ON BARIATRIC PERIOPERATIVE NON-SURGICAL MANAGEMENT IN KUWAIT (RETROSPECTIVE STUDY), 23rd World Congress of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO), Publisher: SPRINGER, Pages: 501-501, ISSN: 0960-8923

Conference paper

Markakis C, Clark J, Bansi D, Lopes MM, Ahmed Aet al., 2018, Endoluminal revision of gastrojejunostomy for weight regain after Roux-en-Y gastric bypass: Demonstration of technique and early results, 9th Annual Scientific Meeting of the British-Obesity-and-Metabolic-Surgery-Society (BOMSS), Publisher: WILEY, Pages: 13-13, ISSN: 0007-1323

Conference paper

Makwana N, Ahmed A, 2018, Bariatric Left Gastric Artery Embolisation (LGAE) is more effective than Modification of Lifestyle factors / Tier 3 weight management intervention alone for Weight Loss over a 12 month period. A systematic review, 9th Annual Scientific Meeting of the British-Obesity-and-Metabolic-Surgery-Society (BOMSS), Publisher: WILEY, Pages: 23-23, ISSN: 0007-1323

Conference paper

Tan M, Purkayastha S, Moorthy K, Hakky S, Ahmed Aet al., 2018, Mini-gastric Bypass: A Viable Option for Revision Bariatric Surgery, 9th Annual Scientific Meeting of the British-Obesity-and-Metabolic-Surgery-Society (BOMSS), Publisher: WILEY, Pages: 14-15, ISSN: 0007-1323

Conference paper

Markakis C, Aggarwal R, Yeung KTD, Ahmed Aet al., 2018, Early Small Bowel Obstruction after Bariatric Surgery: Stratefy For Successful Laparoscopic Management, 8th Congress of the European-Chapter of the International-Federation-for-the-Surgery-of-Obesity-and-Metabolic-Disorders (IFSO-EC), Publisher: SPRINGER, Pages: S75-S76, ISSN: 0960-8923

Conference paper

Sun S, Borisenko O, Spelman T, Ahmed ARet al., 2018, Patient characteristics, procedural and safety outcomes of bariatric surgery in England: a retrospective cohort study-2006-2012, Obesity Surgery, Vol: 28, Pages: 1098-1108, ISSN: 0960-8923

BACKGROUND: The objective of the study is to analyze procedural and safety outcomes associated with bariatric surgery and describe the characteristics of patients undertaking bariatric procedures in England between April 2006 and March 2012. METHODS: This is a retrospective cohort study of all adult patients in England diagnosed with obesity and undergoing bariatric surgery as a primary procedure in NHS-funded sites between April 2006 and March 2012 using data sourced from the Hospital Episode Statistics dataset. Length of stay (LOS), 30-day readmission, and post-surgery complication were analyzed as primary outcomes. Socio-demographic background, provider type, procedure volume, and comorbidities were all analyzed as potential explanatory variables. RESULTS: Gastric bypass (GBP, 12,628) was the most utilized procedure, followed by gastric banding (GB, 6872) and sleeve gastrectomy (SG, 3251). The most prevalent comorbidity was type 2 diabetes (23%). Inpatient mortality was low (≤ 0.15%) for all procedure types. LOS and the risks of both post-operative complication and 30-day readmission were significantly lower for GB, relative to those for GBP and SG. Ethnicity, geographical area, surgery type, and volume were all associated with LOS, risk of readmission, and complication. Provider type and deprivation were further associated with LOS while age correlated with readmission only. An increasing comorbidity burden was associated with an increased risk of both readmission and complication. CONCLUSIONS: Gastric bypass was the most frequently reported procedure in England across the observation period. While utilization across all procedure types increased between 2007 and 2010, overall uptake of bariatric surgery in England represents only a small proportion of the eligible population. Readmission and complication rates were lower for gastric banding relative to those for either gastric bypass or sleeve gastrectomy. The observed inpatient mortality rate was low a

Journal article

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