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Incidence of heart failure in patients with type 1 diabetes: a systematic review of observational studies

Journal of Endocrinological Investigation, ISSN: 1720-8386, Vol: 44, Issue: 4, Page: 745-753
2021
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Article Description

Background: Heart failure (HF) is considered an important contributor to cardiovascular morbidity and mortality in diabetes mellitus. However, a precise identification of hyperglycemia as contributor for HF is missing. Objectives: We performed a review and a meta-regression of the available observational studies on the incidence of HF in type 1 diabetes (T1D). Data source and analysis: We conducted a systematic search of the literature on the incidence of HF in patients with T1D identifying suitable studies published between January 1970 and June 2018 using the following search string: “type 1 diabetes” AND, “heart failure” OR “cardiac failure” OR “congestive heart failure” AND “incidence” NOT “type 2 diabetes” OR “diabetes type 2”. Six observational studies were included. A random effect meta-regression model has been estimated to evaluate the incidence rate ratio (IRR) of HF in T1D compared to healthy controls. Results: The mean ± SD age of patients with T1D was 42 ± 11 years, the mean HbA1c was 8.4 ± 0.3%, and average follow-up was 11 ± 3 years. The age-adjusted model shows an incidence rate ratio (IRR) effect of 3.18 (p < 0.001), in correspondence of the mean age at enrollment of studies involved in the analysis. A negative correlation was observed between IRR and average age. Conclusions: This review shows that the incidence rate of HF is three times higher in patients with T1D than in controls. A careful surveillance of the risk factors for this condition should be included, since the onset of T1D may be important to reduce HF risk in these patients.

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