Abstract

BackgroundWe aimed to evaluate the risk of heart failure in young adults with childhood-onset type 1 diabetes from the Pittsburgh Epidemiology of Diabetes Complications (EDC) Study. We also examined risk factors and microvascular disease burden associated with the incidence of heart failure. MethodsParticipants in the EDC study without known baseline heart failure (n = 655) were enrolled and then followed for 25 years. “Any” heart failure comprised the underlying cause of death, primary reason for hospitalization, EDC clinic examination findings or self-report of a physician diagnosis. “Hard” heart failure was determined only by the underlying cause of death or primary reason for hospitalization. Incidence rates for heart failure were estimated using Poisson models. Cox models were constructed to examine the associations between risk factors and microvascular disease burden with incident heart failure. ResultsThe mean baseline age and diabetes duration were 27(8) years and 19 (8) years. Incidence for any and hard heart failure were 3.4 and 1.8/1000 person-years. Diabetes duration, ever smoking and triglycerides were significant risk factors of any heart failure; longer diabetes duration, lower estimated glomerular filtration rate and higher white blood cell count significantly predicted hard heart failure. A gradient association was observed between the number of microvascular disease (from 0 to 3) and “hard” heart failure endpoint but not “any” clinically defined heart failure. ConclusionYoung adults with long-duration type 1 diabetes had a high risk of heart failure. As microvascular disease burden increases so does the risk of heart failure independently of diabetes duration, A1c and coronary artery disease.

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