Anemia in Chronic Obstructive Pulmonary Disease and the Potential Role of Iron Deficiency.

The purpose of this review is to evaluate the role of anemia on patient outcomes in chronic obstructive pulmonary disease (COPD), the potential contribution that low iron stores may play in this process, and possible treatment considerations. A review of research studies found that anemia is associated with declining functional outcomes, increased health care utilization and costs, and increased mortality in COPD. Associations exist between reduced iron intake and progression of COPD and in reduction of iron status with declining lung function. Currently data are limited on the effects of either treating anemia or utilizing iron supplementation in anemic COPD patients. If iron supplementation might therefore reverse some of the declines that patients experience, then routine screening and treatment may turn out to be an effective, simple and inexpensive intervention. Iron supplementation models utilized in other inflammatory-related disease states were reviewed as a possible starting point to evaluate treatment options in COPD. Future research can be directed to establish best practice standards for the use of iron supplementation in COPD.