Gencer, BarisBarisGencerRigamonti, FabioFabioRigamontiNanchen, DavidDavidNanchenKlingenberg, RolandRolandKlingenbergRäber, LorenzLorenzRäberMoutzouri Beifuss, ElisavetElisavetMoutzouri BeifussAuer, RetoRetoAuerCarballo, DavidDavidCarballoHeg, Dierik HansDierik HansHeg0000-0002-8766-7945Windecker, StephanStephanWindeckerLüscher, Thomas FelixThomas FelixLüscherMatter, Christian MChristian MMatterRodondi, NicolasNicolasRodondiMach, FrançoisFrançoisMachRoffi, MarcoMarcoRoffi2024-10-252024-10-252020-09https://boris-portal.unibe.ch/handle/20.500.12422/162405BACKGROUND Controversy remains regarding the prevalence of hyperglycaemia in non-diabetic patients hospitalised with acute coronary syndrome and its prognostic value for long-term outcomes. METHODS AND RESULTS We evaluated the prevalence of hyperglycaemia (defined as fasting glycaemia ⩾10 mmol/l) among patients with no known diabetes at the time of enrolment in the prospective Special Program University Medicine-Acute Coronary Syndromes cohort, as well as its impact on all-cause death, myocardial infarction, stroke and incidence of diabetes at one year. Among 3858 acute coronary syndrome patients enrolled between December 2009-December 2014, 709 (18.4%) had known diabetes, while 112 (3.6%) of non-diabetic patients had hyperglycaemia at admission. Compared with non-hyperglycaemic patients, hyperglycaemic individuals were more likely to present with ST-elevation myocardial infarction and acute heart failure. At discharge, hyperglycaemic patients were more frequently treated with glucose-lowering agents (8.9% vs 0.66%, p<0.001). At one-year, adjudicated all-cause death was significantly higher in non-diabetic patients presenting with hyperglycaemia compared with patients with no hyperglycaemia (5.4% vs 2.2%, p=0.041) and hyperglycaemia was a significant predictor of one-year mortality (adjusted hazard ratio 2.39, 95% confidence interval 1.03-5.56). Among patients with hyperglycaemia, 9.8% had developed diabetes at one-year, while the corresponding proportion among patients without hyperglycaemia was 1.8% ( p<0.001). In multivariate analysis, hyperglycaemia at presentation predicted the onset of treated diabetes at one-year (odds ratio 4.15, 95% confidence interval 1.59-10.86; p=0.004). CONCLUSION Among non-diabetic patients hospitalised with acute coronary syndrome, a fasting hyperglycaemia of ⩾10 mmol/l predicted one-year mortality and was associated with a four-fold increased risk of developing diabetes at one year.enAcute coronary syndrome diabetes hyperglycaemia600 - Technology::610 - Medicine & health300 - Social sciences, sociology & anthropology::360 - Social problems & social servicesarticle10.7892/boris.1171632986282510.1177/2048872618777819