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Evaluating Whole Blood Transfusion Efficacy in Prehospital Management of Traumatic HemorrhageWhole blood does not outperform standard care for traumatic hemorrhage

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Key Takeaway
Prehospital whole blood transfusion shows no significant advantage over standard care for reducing death or massive transfusion.

This large-scale randomized controlled trial evaluated the efficacy of prehospital whole blood transfusion compared to standard care—consisting of red cells and plasma—for patients suffering from major traumatic hemorrhage. The study specifically targeted patients transported by air ambulance services in England, providing a high-stakes environment for clinical decision-making.

The primary outcome was a composite of death or the requirement for massive transfusion within 24 hours. Results indicated that 48.7% of patients in the whole blood group met this endpoint compared to 47.7% in the standard care group. This difference was not statistically significant, with a confidence interval ranging from 0.80 to 1.31.

Secondary outcomes included monitoring for thrombotic events and prothrombin times. While prothrombin times were higher in the whole blood group, the rate of thrombotic events remained similar between both treatment arms. The study concludes that while whole blood is a viable option, it does not offer superior clinical outcomes over standard component-based care in these specific prehospital settings.

How this fits prior evidence

How this fits prior evidence: This finding extends previous coverage regarding prehospital transfusion, which noted that whole blood did not reduce 30-day mortality compared to blood components. The current study specifically confirms that whole blood is not superior to standard care in reducing the risk of death or massive transfusion within 24 hours.

When someone suffers a major injury and loses a lot of blood, every second counts. Doctors often have to decide quickly between giving whole blood or standard components like red cells and plasma. This large study looked at 616 patients treated by air ambulance services in England to see if whole blood offered any survival advantages.

The results showed that using up to two units of whole blood did not perform better than the standard care method. Both groups had very similar rates of death or the need for a massive transfusion within the first 24 hours. While some patients receiving whole blood had higher rates of clotting issues, the primary goal of saving lives and reducing the need for extreme transfusions was equal in both treatment paths.

Safety data showed that the risk of dangerous blood clots was similar for both groups. However, it is important to note that while the results were clear, this specific study focused on a 24-hour window for patients in prehospital settings. Talk to a medical professional to understand how these findings apply to specific emergency protocols.

What this means for you:
Whole blood did not show a survival advantage over standard care for patients with major traumatic bleeding.

Common questions

Is whole blood more effective for bleeding from trauma?

In this study, giving up to 2 units of whole blood was not superior to standard care. Both groups had similar rates of death or massive transfusion within 24 hours. The results suggest that while both methods are used, the whole blood group did not show a better survival outcome than the standard care group.

Are there safety risks with using whole blood?

The study found that thrombotic events, which are issues involving blood clots, were similar in both the whole blood and standard care groups. While some patients in the whole blood group had higher rates of clotting times outside the normal range, the overall safety profile regarding clots was comparable between the two treatments.

Who was included in this study?

The trial included 616 analyzed patients who suffered from major traumatic hemorrhage and were treated by air ambulance services in England. The study specifically looked at these patients to compare the effectiveness of whole blood versus standard care consisting of red cells and plasma.

Study Details

Study typeRct
Sample sizen = 942
EvidenceLevel 2
PublishedJun 2026
View Original Abstract ↓
BACKGROUND: Whole-blood transfusion has recently gained favor in the management of severe hemorrhage; however, data from large clinical trials evaluating its clinical effectiveness and safety are lacking. METHODS: We conducted a pragmatic, phase 3, multicenter, unblinded, randomized, superiority trial across 10 air ambulance services in England. Patients with major traumatic hemorrhage who were attended by a participating air ambulance service were randomly assigned to receive either whole-blood transfusion (up to 2 units) or standard care with blood components (up to 2 units each of red cells and plasma) before arrival at the hospital. The primary outcome was a composite of death from any cause or massive transfusion (≥10 units of blood components or products) within 24 hours after randomization. RESULTS: A total of 942 patients underwent randomization. After the exclusion of participants with nontraumatic hemorrhage or traumatic cardiac arrest, 616 were included in the analysis (314 in the whole-blood group and 302 in the standard-care group). A primary-outcome event occurred in 48.7% of the participants in the whole-blood group and in 47.7% of those in the standard-care group (relative risk, 1.02; 95% confidence interval, 0.80 to 1.31; P = 0.84). The incidence of death from any cause at all time points, massive transfusion, and other secondary outcomes appeared to be similar in the two groups. Prothrombin times were above the normal range in 40.7% of the participants in the whole-blood group and in 30.5% of those in the standard-care group. More serious adverse events occurred in the standard-care group than in the whole-blood group (37 and 31, respectively). The incidence of thrombotic events appeared to be similar in the two groups. CONCLUSIONS: Among participants with life-threatening hemorrhage, prehospital transfusion of 2 units of whole blood was not superior to standard care in reducing the risk of death or massive transfusion within 24 hours. (Funded by NHS Blood and Transplant and others; ISRCTN Registry number, ISRCTN23657907.).
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