Massive blood transfusion is defined as: (A) 500 ml in 10 min, (B) 250 ml in 5 min, (C) 1 unit in 1 hour, (D) 2500 ml or 5000 ml in 24 hours
Answer is D. According to Schwaz Massive transfusion is a single transfusion of 2500 or 5000 ml over a period of 24 hours .