Vitamin D deficiency in patients with diastolic dysfunction or heart failure with preserved ejection fraction.

HF rehospitalizations increased numerically, across decreasing 25(OH)D tertiles (first tertile: vitamin D <12 ng/mL, second tertile: vitamin D 12–17.6 ng/mL, third tertile: vitamin D >17.6 ng/mL), although this increase did not reach statistical significance. 10 In line with this, Schierbeck et al . examined levels of 25(OH)D in a prospective study of 148 HF outpatients with reduced LVEF with a follow‐up after 3.5 years: decreased level of 25(OH)D (vitamin D insufficient: 25(OH)D <20 ng/mL, vitamin D deficient: 25(OH)D <10 ng/mL) was independently asso

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