Abstract
We read with great interest the IDOCS study, 1 Miles LF Pac Soo V Braat S et al. Associations between non-anaemic iron deficiency and outcomes following elective cardiac surgery (IDOCS): a prospective cohort study. Lancet Haematol. 2022; 9: e514-e522 Google Scholar by Lachlan Miles and colleagues, which found no difference in the number of days alive and at home at postoperative day 30 between patients who were iron deficient and those who were iron replete who had elective cardiac surgery. 1 Miles LF Pac Soo V Braat S et al. Associations between non-anaemic iron deficiency and outcomes following elective cardiac surgery (IDOCS): a prospective cohort study. Lancet Haematol. 2022; 9: e514-e522 Google Scholar However, we disagree with the conclusion drawn that routine preoperative iron deficiency screening in patients who are not anaemic might be of low value because laboratory iron deficiency testing is a risk stratification strategy for perioperative haemoglobin management not an overall preoperative screening strategy.
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