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What is Massive blood transfusion is defined as - and explain in detail?
Massive Blood Transfusion is defined as-
According to Sabiston- .

transfusion greater than patient's total blood volume in 24 hrs
or as acute administration of more than 10 units of blood over a few hours.

According to Schwartz-
Massive transfusion is a single transfusion of 2500 ml or 5000 ml transfused over a period of 24hrs.