What is transfuion rlated acute lung injury (trali)?

Rare transfusion rxn: Trali is a rare reaction to transfused plasma or platelets. It happens when the donor has formed antibodies to white blood cells. When the transfusion is given, the antibodies attack cells in the person receiving it, causing microscopic injury to the lungs. The can result in breathing difficulties and the need for a ventilator for a period of time.