Transfusion Adverse Reaction

The purpose of this retrospective study is to examine the following factors related to blood storage time in severely injured trauma patients who received large blood transfusions: 1. The effect of blood storage time on the patient's 28-day mortality rate. 2. The relationship between storage time and other health problems that the patient may develop (such as heart disease, vascular occlusion, respiratory failure, infection, and organ failure). For this purpose, patients aged 18-75 who were admitted directly from the scene of injury and received large transfusions at Jacksonville Shands Hospital between January 1, 2023, and October 1, 2025, will be included. Data will be obtained from hospital information systems and anesthesia records

The investigators aim to assess the risk of bleeding and thrombo-embolic complications as well as benefit and harm of blood product transfusion and anticoagulation therapy in adult ICU patients with COVID-19 supported with V-V ECMO