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Avoiding blood transfusion. A report of two cases.

It is prudent to avoid blood transfusion whenever possible. Recent reports question the standards previously considered acceptable for blood transfusion. Acute hemorrhage followed by hypovolemia, tachycardia and orthostatic hypotension with dizziness are still considered acceptable criteria for automatic blood transfusion in most patients. We report two cases in which hypovolemia, tachycardia and orthostatic hypotension with dizziness were present. Transfusion was avoided. Hypovolemia, tachycardia and orthostatic hypotension with dizziness do not require transfusion in a few carefully selected and well-monitored patients.