Low vitamin D levels are associated with impaired diastolic function in patients with acute coronary syndrome.

Background: Vitamin D deficiency is a common clinical picture associated with poor cardiovascular prognosis. It is also associated with impaired diastolic dysfunction in stable coronary artery disease. We investigated the relationship between vitamin D levels and diastolic dysfunction in patients with acute coronary syndrome (ACS).

Methods: One hundred seventeen patients with the ACS were enrolled in this cross-sectional study. The diastolic function of the patients was evaluated using echocardiography before discharge. We analyzed the relation between serum levels of 25(OH)D and echocardiographic measures of diastolic dysfunction.

Results: IVRT and E/e' were found to be significantly greater in patients with low vitamin D levels (115.48±13.64 vs. 106.88±14.80 ms, P<0.05; 10.19±2.80 vs. 8.1±3.2, P<0.05). When regression tests were performed, it was shown that vitamin D level was a predictor (OR=0.935, 95% CI: 0.886-0.987; P=0.015) and independent risk factor (OR=0.942, 95% CI: 0.888-0.998; P=0.042) for the development of diastolic dysfunction.

Conclusions: We found that low vitamin D levels are associated with impaired diastolic function in patients with ACS with preserved left ventricular systolic function.