Transfusion Guidelines for Anemia

Indications Based on Clinical Symptoms

The American College of Cardiology recommends that patients with symptoms of anemia, including tachycardia, tachypnea, and postural hypotension, should be transfused to maintain a hemoglobin level of 8-10 g/dL as needed to prevent symptoms 1
The National Comprehensive Cancer Network recommends that acute bleeding with evidence of hemodynamic instability or inadequate oxygen supply requires immediate transfusion, regardless of hemoglobin level 1, 2
Patients with acute coronary syndromes or acute myocardial infarction should maintain a target hemoglobin level of 10 g/dL 1

The American Heart Association suggests that patients with stable cardiovascular disease should consider transfusion if they have symptoms of myocardial ischemia, even with hemoglobin >7 g/dL 3, 2
Patients with acute coronary syndromes may benefit from transfusion when hemoglobin is <8 g/dL, especially if symptoms are present 2

The decision to transfuse should be based on the patient's intravascular volume status, evidence of shock, duration and extent of anemia, cardiopulmonary physiological parameters, and whether the anemia is acute or chronic 2, 5
The American Journal of Hematology recommends that the use of hemoglobin level alone as a "trigger" for transfusion should be avoided 2

In the absence of acute bleeding, red blood cell transfusions should be administered as individual units 2
Patients should be reevaluated after each transfused unit 4

A restrictive transfusion strategy (transfusing when Hb <7 g/dL) is as effective as a liberal strategy (transfusing when Hb <10 g/dL) in critically ill patients with hemodynamically stable anemia 2
Transfusions carry risks, including transfusion-related infections, immunosuppression, and transfusion-related acute lung injury (TRALI) 4, 6