Background
Vitamin D deficiency and diabetes mellitus are frequent among patients with acute myocardial infarction. Independently, both were associated with a worse prognosis after myocardial infarction (MI). However, it is unclear whether the risk of worse outcome, associated with diabetes mellitus, may be accentuated in presence of hypovitaminosis D.
Purpose
We assessed if previously known or newly diagnosed diabetes is associated with worse outcome (major cardiovascular events) in combination with hypovitaminosis D in patients with acute MI.
Methods and results
Were enrolled 1004 patients with acute MI; 64.7% of them, had hypovitaminosis D and 37% were diabetic.
We grouped our population by diabetic status: previously known diabetes (diagnosis of diabetes before MI, n=330; 32.9%); newly diagnosed diabetes (during hospitalization for MI, but no known diabetes at presentation, n=47; 4.7%); or no diabetes (n=627; 62.5%).
Hypovitaminosis D was more frequent among patients with previously known (70.2%) and newly diagnosed diabetes (73.3%), when compared to non diabetic patients (61.2%).
During median follow-up of 15.6 months, patients with previously known and newly diagnosed diabetes had increased risks of major cardiovascular events (HR 1.72; 95% CI, 1.26 to 2.36. The risk of major events during the follow-up among diabetic patients, was further increased in presence of hypovitaminosis D (Figure 1).
Conclusions
The presence of both, previously known or newly diagnosed diabetes and hypovitaminosis D, in patients with MI is synergistically associated with a worse outcome.
Funding Acknowledgement
Type of funding source: None
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