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  • Meeting abstract
  • Open Access

Outcome following coronary artery bypass grafting in patients with non-insulin diabetes mellitus

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Critical Care20026 (Suppl 2) :5

  • Published:


  • Coronary Artery Bypass Grafting
  • Intensive Care Unit Stay
  • Polyneuropathy
  • Reoperation Rate
  • Sulphonylureas


Patients with diabetes mellitus have a worse hospital and long-term outcome after coronary artery bypass grafting (CABG) [1]. It has been shown that the non-insulin diabetes mellitus (NIDDM) group of patients on oral sulphonylureas have a higher mortality than those treated with insulin (IDDM) following myocardial infarction [2]. Oral sulphonylureas abolish ischaemic preconditioning, which is an important cardiac protective mechanism during the perioperative period of CABG [2]. Insulin resistance and hyper-glycaemia decrease arterial compliance, promote plaque growth and cause contractile dysfunction of the myocytes [3].


To analyse retrospectively outcome data in patients with NIDDM on oral sulphonylureas who underwent CABG.


From a total of 2537 patients who had CABG, outcome data was identified in 236 patients with NIDDM and in 130 patients with IDDM over a 2-year period (April 1999–March 2001). We compared the mortality, length of hospital stay, length of stay in the intensive care unit (ICU), reoperation rate, ICU re-admission rate and duration of operation with control patients, matched with respect to surgeon and risk score (EuroSCORE). We also compared the incidence of diabetes in Europe and North America with Papworth.


There was no difference in length of hospital stay, length of ICU stay, reoperation rate, ICU re-admission rate and the duration of operation.


There is a higher mortality in the NIDDM group of patients compared with the IDDM and the non-diabetic group after CABG. Intensive insulin therapy in critically ill postoperative patients showed a reduction in hospital mortality and morbidity from renal failure, blood stream infections and polyneuropathy, and reduced red cell transfusion requirement [4]. Assessment of diabetic patients in the pre-assessment clinics, stopping sulphonylureas and converting to insulin preoperatively and to tight blood glucose control perioperatively, may help improve outcome in this group of patients.


Authors’ Affiliations

Department of Anaesthesia, Papworth Hospital, Papworth Everard, Cambridge, CB3 8RE, UK
Department of Clinical Effectiveness, Papworth Hospital, Papworth Everard Cambridge, CB3 8RE, UK


  1. Thourani VH, Weintraub WS, Stein B, et al.: Influence of diabetes mellitus on early and late outcome after CABG. Ann Thorac Surg 1999, 67: 1045-1052. 10.1016/S0003-4975(99)00143-5View ArticlePubMedGoogle Scholar
  2. Hofmann D, Opie LH: Potassium channel blockade and acute myocardial infarction: implications for management of the non-insulin diabetic patient. Eur Heart J 1993, 14: 1585-1589.View ArticlePubMedGoogle Scholar
  3. McNulty PH, Ettinger SM, Gilchrist IC, et al.: Cardiovascular implications of insulin resistance and non-insulin dependent diabetes mellitus. J Cardiothorac Vasc Anaesth 2001, 15: 768-777. 10.1053/jcan.2001.28338View ArticleGoogle Scholar
  4. Van den Berghe G, Wouters P, Weekers F, et al.: Intensive insulin therapy in critically ill patients. N Engl J Med 2001, 345: 1359-1367. 10.1056/NEJMoa011300View ArticlePubMedGoogle Scholar


© BioMed Central Ltd 2002