Paper says hospitals that do treat patients with anemia have better outcomes

Published on January 28, 2013 at 6:06 AM · No Comments

Up to one-third of patients undergoing surgery in Ontario have a treatable form of anemia but are not optimally treated for it.

A paper published online today in the Canadian Journal of Anesthesia says that hospitals that do treat patients with anemia have better outcomes, including fewer blood transfusions and infections and shorter hospital stays.

A common option for management of anemia has been blood transfusion. But blood transfusions are expensive and are associated with higher death and complication rates.

Dr. Gregory Hare, an anesthesiologist at St. Michael's Hospital, reported in today's paper that hip and knee replacement patients who had blood transfusions stayed in hospital about two days longer than those who did not have transfusions. The stay was about three days longer for coronary artery bypass graft patients who had transfusions. The risk of infection more than doubled for patients who had transfusions.

Dr. Hare called anemia a "silent killer." Severe anemia can cause low oxygen levels in vital organs and may result in heart attacks, strokes and kidney failure. He said early diagnosis of anemia is important to give doctors sufficient time to treat it before surgery.

For example, 10.4 per cent of knee replacement patients diagnosed with anemia less than seven days before surgery required transfusions, compared to 7.3 per cent diagnosed more than 21 days in advance. He said 41.3 per cent of coronary artery bypass grafts patients needed blood transfusions if diagnosed with anemia less than seven days before surgery, compared with 22.8 per cent diagnosed more than 21 days in advance.

"If given time to treat anemia, we can avoid unnecessary transfusions and thereby improve quality of patient care," Dr. Hare said.

St. Michael's is developing a Centre of Excellence for Patient Blood Management, which would be one of the first of its kind in Canada and a global leader in patient care and in training, research and education for health care professionals.

Under patient blood management, physicians might prescribe certain drugs or dietary supplements to raise a patient's hemoglobin level before surgery.

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