[Anemia in the elderly: influence on physical, functional status and prognosis.].

Anemia in older patients can be seen as a geriatric syndrome that impairs quality of life, functional status, reduces autonomy, and affects prognosis. Anemia is associated with other geriatric syndrome such as frailty, sarcopenia, falls and fractures, vitamin D deficiency, dementia and others. Iron deficiency anemia is the most common. Most often in older persons, the causes of its development are chronic blood loss and malnutrition. Laboratory criteria confirming iron deficiency anemia are hemoglobin reduction, microcytosis, low serum iron and ferritin. This is the basis for the administration of iron preparations, among which two- and threevalent ones are isolated. Trivalent iron preparations are most preferred in older patients because they have better tolerance and less frequency of side effects with comparable efficacy with divalent preparations.