What are the effects of untreated anaemia in surgical patients?

Anaemia after surgery has been linked to an increased risk of infection, difficulty in suturing the surgical wound, a greater need for ventilator support, and a higher number of complications compared to people who do not suffer from it. Patients with severe anaemia are usually candidates for blood transfusions, which in some cases can prolong their hospital stay. That is why it is considered very important to treat and correct anaemia before performing surgery.