First I am truly sorry about your loss. Second there are a million different things that can contribute to "dilutional anemia adverse outcomes". The list is quite long. There is a reason that trauma and emergency care comes with a large amount of problematic areas. The literature is just starting to get more vigorous about looked at the type of fluid that is used in large quantity resuscitation efforts. You state "was given large amounts of colloids and crystaloids before his op to reduce fractures of the femur, tibia and fibula of his right leg". The cause of his demise was probably due to numerous issues secondary to his fractures. When a large bone fracture such as that occurs there is a large amount of blood loss. Therefore unfortunately since there are so many things that might have cause it, you would have to address all of them. There are many life threatening perioperative complications that come from that type of injury. Again I am sorry I can't assist you more, and sorry for your loss.