Publications

Original Articles

2024

  • Safety outcomes of bariatric surgery in patients with advanced organ disease: the ONWARD study: a prospective cohort study. Singhal et al (collaborative authorship). International Journal of Surgery 2024;110:95-110.  
  • The effects of preoperative glycaemic control (HbA1c) on Bariatric and Metabolic Surgery outcomes: Data from a tertiary-referral Bariatric Center in the United Kingdom. Wilmington R et al. Obesity Surgery 2024; 34: 850-54. 

2023

  • Roux-en-Y gastric bypass, gastric banding, or sleeve gastrectomy for severe obesity: Baseline data from the By-Band-Sleeve randomized controlled trial. By-Band-Sleeve Collaborative Group. Obesity 2023; 31(5): 1290-1299. 
  • The First Modified Delphi Consensus-Building Exercise on Surgical Ward Rounds in the United Kingdom National Health Service. Amr B et al (collaborative authorship). World J Surgery 2023; 47(6): 1348-57.

2022

  • 30-day morbidity and mortality of sleeve gastrectomy, Roux-en-Y gastric bypass and one anastomosis gastric bypass: a propensity score-matched analysis of the GENEVA data. Singhal R et al (collaborative authorship). International J Obesity 2022; 46: 750-57. 

2021

  • 30-day morbidity and mortality of bariatric and metabolic surgery in adolescence during the COVID-19 pandemic – The GENEVA study. Singhal R et al (collaborative authorship). Pediatric Obesity 2021; 16 (12): e12832. 
  • Global 30-day outcomes after bariatric surgery during the COVID-19 pandemic (GENEVA): an international cohort study. Singhal R et al (collaborative authorship). Lancet Diabetes Endocrinology 2021; 7-9.
  • 30-day morbidity and mortality of bariatric surgery during the COVID-19 pandemic: A multinational cohort study of 7704 patients from 42 countries. Singhal R et al (collaborative authorship). Obesity Surgery 2021; 10: 4272-4288.
  • Opioid prescription at postoperative discharge: A retrospective observational cohort study. Daliya P et al (collaborative authorship). Anaesthesia 2021; 76(10): 1367-76.

2020

  • Evaluation of liver function tests and risk score assessment to screen patients for significant liver disease prior to bariatric and metabolic surgery. Antipass A, Austin A, Awad S, Hughes D, Idris I. Obesity Surgery 2020; 30(7):2840-2840. 

2019

  • Prevalence of co-morbidities in a specialist weight management programme prior to bariatric surgery. Fountain D, Al Kharaiji, Awad S, Hughes D, Idris I. British Journal of Diabetes 2019; 19 (1): 1-6. 
  • Postoperative inflammation and insulin resistance in relation to body composition, adiposity and carbohydrate treatment: A randomised controlled study. Tewari N, Awad S, Duska F, Williams JP, Macdonald IA, Lobo DN. Clinical Nutrition 2019; 38: 204-212. 

2018

  • Upper gastrointestinal surgeon attitudes towards management of refractory gastroesophageal reflux disease in obese patients. Al-Khyatt W, Awad S, Leeder P. Mini-invasive Surgery 2018; 2:3 
  • A comparison of three methods to assess body composition. Tewari N, Awad S, Macdonald IA, Lobo DN. Nutrition 2018; 47: 1-5.

2017

  • Predictors of inadequate weight loss after laparoscopic bypass for morbid obesity. Al-Khyatt W, Ryall R, Leeder P, Ahmed J, Awad S. Obesity Surgery 2017; 27(6): 1446-1452

2016

  • Guidelines for perioperative care in Bariatric Surgery: Enhanced Recovery After Surgery (ERAS) Society Recommendations. Thorell A, MacCormick AD, Awad S, Reynold N, Roulin D, Demartines N, Vignaud M, Alvarez A, Singh PM, Lobo DN. World Journal of Surgery 2016; 40(9):2065-2083
  • Laparoscopic Roux en-Y gastric bypass using a modified retrocolic-supracolic approach: Outcomes from 300 patients. Al-Khyatt W, Bull CA, Awad S, Ahmed J. World Journal of Surgery 2016; 40(8): 1918-1924
  • Mid-term remission of type 2 diabetes mellitus after laparoscopic Roux en-Y gastric bypass. Vasas P, Al-Khyatt W, Idris I, Leeder P, Awan A, Awad S, Ahmed J. World Journal of Surgery 2016; 40 (11): 2719-2725

2015

  • Outcomes of linear-stapled versus hand-sewn gastrojejunal anastomosis in laparoscopic Roux en-Y gastric bypass. Awad S, Aguilo R, Agrawal S, Ahmed J. Surgical Endoscopy 2015; 29(8): 2278-2283 

2014

  • Enhanced Recovery After Bariatric Surgery (ERABS): Clinical outcomes from a tertiary referral bariatric centre. Awad S, Carter S, Purkayastha S, Hakky S, Moorthy K, Cousins J, Ahmed AR. Obesity Surgery 2014; 24(5): 753-58 

2013

  • The utilization of the MUST nutritional screening tool on vascular surgical wards. Tewari N, Rodrigues J, Altaf N, Awad S. BMJ Quality Improvement Reports 2013; u201374.w1122 DOI: 10.1136/bmjquality.u201374.w1122
  • A meta-analysis of randomized controlled trials on preoperative oral carbohydrate treatment in elective surgery. Awad S, Varadhan K, Ljungqvist O, Lobo DN. Clinical Nutrition 2013; 32:34-44

2012

  • Perioperative perturbations in carnitine metabolism are attenuated by preoperative carbohydrate loading: another mechanism by which preoperative feeding may attenuate development of postoperative insulin resistance. Awad S, Stephens F, Shannon C, Lobo DN. Clinical Nutrition 2012; 31(5): 717-20
  • A randomized controlled double-blind study on the effects of 1-liter intraoperative infusions over 1 hour of 4% succinylated gelatine (Gelofusine®) and 6% hydroxyethyl starch (Voluven®) on blood volume. Awad S, Dharmavaram S, Wearn C, Dube M, Lobo DN. British Journal of Anaesthesia 2012; 109:168-176
  • Marked changes in body composition following neoadjuvant chemotherapy for oesophagogastric cancer. Awad S, Tan BH, Cui H, Bhalla A, Fearon KCH, Parsons SL, Catton JA, Lobo DN. Clinical Nutrition 2012; 31: 74-77
  • One and two-year outcomes and predictors of mortality following emergency laparotomy: a consecutive series from a United Kingdom teaching hospital. Awad S, Herrod PJJ, Palmer R, Carty H, Abercrombie JF, Brooks A, de Beer T, Mole J, Lobo DN. World Journal of Surgery 2012; 36:2060-2070
  • A prospective randomised study comparing oral 13C-bicarbonate tracer technique versus indirect calorimetry for measurement of energy expenditure in adults. Awad S, Cui H, Wright JW, Jackson S, Macdonald IA, Lobo DN. eSPEN 2012; 7(1): e1-4

2011

  • A randomized crossover study on the effects of glutamine and lipid on gastric emptying time of a preoperative carbohydrate drink. Awad S, Blackshaw PE, Wright JW, Macdonald IA, Perkins AC, Lobo DN. Clinical Nutrition 2011; 30: 165-171
  • A randomized crossover study of the metabolic and hormonal responses following two preoperative conditioning drinks. Awad S, Fearon KCH, Macdonald IA, Lobo DN. Nutrition 2011; 27: 938-942

2010

  • Cellular mechanisms underlying the protective effects of preoperative feeding: a randomized study investigating muscle and liver glycogen content, mitochondrial function, gene and protein expression. Awad S, Constantin-Teodosiu D, Constantin D, Rowlands BJ, Fearon KCH, Macdonald, IA, Lobo DN. Annals of Surgery 2010; 252: 247-253
  • Mucins and CD56 as markers of tumour invasion and prognosis in periampullary cancers. Aloysius MM, Zaitoun AM, Awad S, Ilyas M, Rowlands BJ, Lobo DN. British Journal of Surgery 2010; 97:1269-1278
  • Lateral thermal spread: Comparison of monopolar and bipolar diathermy, the Harmonic Scalpel™ and the Ligasure™. Sutton PA, Awad S, Perkins AC, Lobo DN. British Journal of Surgery 2010; 97:428-433
  • The effects of fasting and refeeding with a ‘metabolic preconditioning’ drink on substrate reserves and mitochondrial function. Awad S, Stephenson MC, Marciani L, Placidi, E, Constantin-Teodosiu D, Gowland PA, Spiller RC, Fearon KCH, Morris PG, Macdonald IA, Lobo DN. Clinical Nutrition 2010; 29: 538-544
  • Hypo- and hypernatraemia in surgical patients: Is there room for improvement? Herrod PJJ, Awad S, Redfern A, Morgan L, Lobo DN. World Journal of Surgery 2010; 34:495-499Knowledge and attitudes of surgical trainees towards nutritional support: Food for thought. Awad S, Herrod PJJ, Forbes E, Lobo DN. Clinical Nutrition 2010; 29: 243-248

2008

  • Fluid and electrolyte balance: The impact of goal directed teaching. Awad S, Allison SP, Lobo DN. Clinical Nutrition 2008; 27: 473-78
  • An “all-comers” venous duplex scan policy for patients with lower limb varicose veins attending a one-stop vascular clinic: is it justified? Makris S, Karkos C, Awad S, London NJM. European Journal of Vascular & Endovascular Surgery 2006; 32: 718-724
  • The impact of diabetes on current revascularization practice and clinical outcome in patients with critical lower limb ischemia. Awad S, Karkos C, Serracino-Inglott F, Cooper N, Butterfield JS, Ashleigh R, Nasim A. European Journal of Vascular & Endovascular Surgery 2006; 32:51-59

Review Articles

2015

  • Obesity-related insulin resistance: implications for the surgical patient. Tewari N, Awad S, Macdonald IA, Lobo DN. International Journal of Obesity 2015; 39: 1575-1588 

2014

  • Should chloride-rich crystalloids remain the main stay of fluid resuscitation to prevent “pre-renal” acute kidney injury? – Con. Lobo DN, Awad S. Kidney International 2014; 86 (6): 1096-1105  

2013

  • Regulation of food intake after surgery and the gut brain axis. Tewari N, Awad S, Lobo DN. Current Opinion in Clinical Nutrition and Metabolic Care 2013; 16:569-575

2012

  • Metabolic-conditioning to attenuate the adverse effects of perioperative fasting and improve patient outcomes. Awad S, Lobo DN. Current Opinion in Clinical Nutrition and Metabolic Care 2012; 15(2):194-200

2011

  • What’s new in perioperative nutritional support? Awad S, Lobo DN. Current Opinion in Anesthesiology 2011; 24:339-348

2009

  • Short-term starvation and mitochondrial dysfunction – a possible mechanism leading to postoperative insulin resistance. Awad S, Constantin-Teodosiu D, Macdonald IA, Lobo DN. Clinical Nutrition 2009; 28: 497-509

2008

  • The history of 0.9% Saline. Awad S, Allison SP, Lobo DN. Clinical Nutrition 2008; 27: 179-88

Book Chapters

  • Indications and contraindications of bariatric and metabolic surgery. Handbook of Metabolic and Bariatric Surgery, First Edition. Edited by Iskandar Idris, Sherif Awad and Abdelrahman Nimeri. Wiley. 2023
  • Preoperative management: Surgical considerations. Handbook of Metabolic and Bariatric Surgery, First Edition. Edited by Iskandar Idris, Sherif Awad and Abdelrahman Nimeri. Wiley. 2023
  • Sleeve Gastrectomy. Handbook of Metabolic and Bariatric Surgery, First Edition. Edited by Iskandar Idris, Sherif Awad and Abdelrahman Nimeri. Wiley. 2023
  • Postoperative management and follow up. Handbook of Metabolic and Bariatric Surgery, First Edition. Edited by Iskandar Idris, Sherif Awad and Abdelrahman Nimeri. Wiley. 2023
  • Enhanced Recovery for the obese patient. Fareed K and Awad S. Core Topics in Anaesthesia and Perioperative Care of the Morbidly Obese Surgical Patient. Cambridge University Press. 2018.
  • Fluid Management. Awad S and Lobo DN. The SAGES/ERAS Society Manual of Enhanced Recovery Programs for Gastrointestinal Surgery. Springer. 2016  
  • Management of Surgical Drains. El-Sharkawy A and Awad S. Gynecologic and Obstetric Surgery: Challenges and Management Options. Wiley-Blackwell Publishing. 2016
  • Acute Kidney Injury after Major Abdominal Surgery: Epidemiology and Management Challenges. Awad S, Lobo DN. Peri-operative Kidney Injury: Principles of Risk Assessment, Diagnosis and Treatment. Springer. 2015
  • Acute Pancreatitis. Awad S. Chapter contribution for the course manual of the Speciality Skills in Emergency Surgery and Trauma Course, Royal College of Surgeons of England. Henry Ling Ltd, Dorset. 2009.
  • Hepatobiliary. Beckingham IJ, Awad S, Fitzgerald JE & Brooks A. ABC of Lines, drains and tubes. BMJ Books. Wiley-Blackwell Publishing. 2008. ISBN: 9781405160148
  • Surgical Drains. Awad S, Simpson A & Brooks A. ABC of Tubes, Drains, Lines and Frames. BMJ Books. Wiley-Blackwell Publishing. 2008. ISBN: 9781405160148
  • Sepsis. Awad S, Lobo DN. Chapter contribution to STEP® distance learning course organised by the Royal College of Surgeons of England. 2008
  • Intervention for recurrent carotid stenosis: The role of carotid angioplasty and stenting. Naylor A.R, Chung S, Awad S. Endovascular Therapies: Current Evidence. Edited by MG Wyatt and AT Watkinson. TFM Publishing Ltd, Shrewsbury. 2006

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