<prompt> Which of the following complications is likely to result after several units of blood have been transfered?Metabolic acidosisMetabolic alkalosisRespiratory alkalosisRespiratory acidosis  <response>: Massive transfusion is defined as the need to transfere one to two times the patients normal blood volume or 50 of blood volume wihtin 3 hours.In a normal adult, this is equivalent 10-20 unitsMost common abnormality is metabolic alkalosis.It results from the conversion of citrate present in stored blood and lactate accumulated due to hypoperfusion to bicarbonate. 