Association of 25-hydroxyvitamin D with anemia risk in patients scheduled for cardiac surgery

作者：Zittermann Armin^*; Kuhn Joachim; Dreier Jens; Knabbe Cornelius; Prokop Sylvana; Gummert Jan F; Boergermann Jochen

来源：International Journal of Laboratory Hematology, 2014, 36(1): 29-36.

DOI：10.1111/ijlh.12112

• Vitamin D
• 25-hydroxyvitamin D
• cardiac surgery
• anemia
• hemoglobin

Introduction: There is emerging data that vitamin D plays a role in erythropoiesis. Low 25-hydroxyvitamin D (25OHD) levels may therefore be a risk factor for anemia in patients scheduled for cardiac surgery.
Methods: We investigated 4428 consecutive cardiac surgical patients to determine an association between anemia (hemoglobin concentration <12.5g/dL, 27.1% of the study cohort) and circulating 25OHD.
Results: In patients with severe vitamin D deficiency (25OHD<12.5nm), mean hemoglobin concentrations were 0.80g/dL lower compared with patients with adequate 25OHD levels (50.0-100nm). Hemoglobin levels were not significantly different at 25OHD levels above 100nm compared with 50.0-100nm. In multivariable-adjusted logistic regression analyses, the odds ratios for anemia of the groups with severe and moderate vitamin D deficiency (12.5-29.9nm) were 1.70 (95% CI:1.09-2.63) and 1.41 (95% CI:1.02-1.96), respectively, compared with patients who had circulating 25OHD levels of 75-100nm. Prevalence of deficient circulating 25OHD levels was highest in anemia of chronic kidney disease.
Conclusion: This cross-sectional study demonstrates an independent association between vitamin D status and anemia risk with optimal 25OHD levels of 75-100nm. Randomized controlled trials are needed to clarify whether this association is causal.

• 出版日期2014-2