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Guilian Birindwa,1,2 Michael Maeng,1,3 Pernille Gro Thrane,1 Christine Gyldenkerne,1,2 Reimar Wernich Thomsen,2 Kevin Kris Warnakula Olesen1 1Department of Cardiology Aarhus University Hospital, Aarhus, Denmark; 2Department of Clinical Epidemiology, Aarhus University and Aarhus University Hospital, Aarhus, Denmark; 3Department of Clinical Medicine, Department of Cardiology, Aarhus University Hospital, Aarhus University, Aarhus, DenmarkCorrespondence: Kevin Kris Warnakula Olesen, Department of Cardiology, Aarhus University Hospital, Palle-Juul Jensens Boulevard 99, Aarhus N, 8200, Tel +0045 53 80 64 80, Email kevole@clin.au.dkBackground: Diabetes mellitus (DM) patients without coronary artery disease (CAD) have a higher all-cause mortality rate than patients with neither DM nor CAD. We examined cause-specific death of DM patients with and without CAD.Methods: We conducted a cohort study of all patients who underwent CAG in Western Denmark between 2003 and 2016. Using Danish health registries, patients were followed for a maximum of 10 years and stratified according to their DM and CAD status. Outcomes included all-cause-, cancer-, circulatory-, and endocrinologic death. Ten-year cumulative risks were computed as well as adjusted and unadjusted hazard ratios (aHR and HR).Results: A total of 132,432 patients (28,524 deaths, median follow-up of 6.2 years) were included. Compared to patients with neither DM nor CAD, DM patients without CAD had a higher 10-year risk of all-cause death (27.9% versus 19.7%, aHR 1.43 [95% CI 1.35– 1.52]), cancer death (7.2% versus 5.4%, aHR 1.29 [95% CI 1.15– 1.46]), circulatory death (9.1% versus 6.9%, aHR 1.35 [95% CI 1.22– 1.49]), and endocrinologic death (3.9% versus 0.3%, aHR 14.02 [95% CI 10.95– 17.95]). Among endocrinologic deaths, 87% were due to classical complications of DM, such as diabetic nephropathy and ketoacidosis, in DM patients without CAD.Conclusion: Diabetes patients without CAD exhibit a higher risk of all-cause mortality, driven primarily by elevated rates of cancer, circulatory, and endocrinologic deaths, particularly related to diabetic microvascular complications.Keywords: diabetes, coronary artery disease, death |
