Efficacy of Resuscitative Endovascular Balloon Occlusion of the Aorta in Hemorrhagic ShockREBOA shows potential to lower mortality in severe bleeding cases

The journal of trauma and acute care surgery Published July 26, 2026 Study authors: Londoño Barrientos Mateo, Amarillo Gutierrez David, López Zapata Carlos A, Morales-Uribe Carlos H, M… PubMed ↗ DOI ↗ Editorial oversight: Dr. Lars van Dijk, PhD · Surgical, Procedural & Diagnostic

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Key Takeaway

REBOA significantly reduces in-hospital mortality in hemorrhagic shock but is associated with higher complication rates.

This meta-analysis evaluates the clinical utility of resuscitative endovascular balloon occlusion of the aorta (REBOA) as a life-saving intervention for adult trauma patients experiencing exsanguinating hemorrhagic shock or traumatic cardiac arrest. By comparing REBOA against standard resuscitative thoracotomy with supraceliac aortic cross-clamping, the study aims to quantify mortality rates and neurological outcomes in critically ill patients.

The primary outcome of in-hospital mortality showed a statistically significant reduction in patients treated with REBOA compared to those undergoing traditional surgical clamping. The analysis reported an odds ratio of 0.17 (95% CI: 0.10–0.28), indicating a substantial survival advantage for the intervention group. This trend remained consistent across specific subsets, including patients specifically in hemorrhagic shock and those in cardiac arrest.

In cases of hemorrhagic shock, the odds ratio for mortality was 0.18 (95% CI: 0.12–0.28). For patients presenting with traumatic cardiac arrest, the mortality rate was also significantly lower in the REBOA cohort, though the confidence interval was wider at 0.32 (95% CI: 0.15–0.69). These findings suggest that rapid vascular occlusion via balloon inflation provides a critical window for physiological stabilization during massive hemorrhage.

Early mortality rates were also significantly lower in patients receiving REBOA, with an odds ratio of 0.12 (95% CI: 0.07–0.23). Furthermore, neurological outcomes appeared superior in the intervention group, suggesting that maintaining distal perfusion while controlling proximal hemorrhage may mitigate secondary brain injury during the initial resuscitation phase.

However, the analysis identified a significant increase in complication rates for patients undergoing REBOA (OR: 7.81; 95% CI: 3.88–15.72). These complications are often associated with prolonged aortic occlusion times and potential distal ischemia. Clinicians must weigh these risks against the high mortality rates observed in untreated hemorrhagic shock.

The evidence for primary outcomes is of moderate certainty, though it is important to note that the inclusion of observational studies may influence the strength of association. The findings underscore a clear survival benefit but highlight the necessity of skilled personnel and precise timing to mitigate procedural complications.

In clinical practice, REBOA is recommended as a preferred intervention for selected patients—particularly those in profound hemorrhagic shock—when performed by experienced trauma teams. While the procedure carries higher complication risks than traditional methods, its ability to drastically reduce mortality makes it a potent tool in the management of catastrophic hemorrhage.

How this fits prior evidence

How this fits prior evidence This meta-analysis provides moderate-certainty evidence that REBOA is associated with lower in-hospital mortality (OR: 0.17) compared to resuscitative thoracotomy. This finding addresses a gap in clinical management for patients with exsanguinating hemorrhagic shock or cardiac arrest by providing a quantitative comparison of these two life-saving interventions.

When a person suffers from severe, life-threatening bleeding due to a major injury or trauma, every second counts. Doctors must act quickly to stop blood loss and keep vital organs functioning. One method used in these emergency situations is called REBOA. This procedure involves placing a balloon inside a large artery to block blood flow to the lower body, which helps preserve blood for the heart and brain while surgeons work to stop the bleeding. For patients facing sudden trauma or cardiac arrest from blood loss, this technique can be a critical tool in emergency medicine.

A large review of data involving over 9,000 adult trauma patients compared the use of REBOA against another surgical method called resuscitative thoracotomy with supraceliac aortic cross-clamping. The goal was to see which method performed better at keeping patients alive during these extreme medical emergencies. The researchers looked specifically at in-hospital mortality rates, neurological outcomes, and the frequency of complications for both groups.

The findings showed that patients who received the REBOA treatment had significantly lower rates of death in the hospital compared to those who received the alternative surgery. This trend was consistent across several categories, including general in-hospital deaths, early deaths, and specifically among patients in hemorrhagic shock or cardiac arrest. Additionally, the study noted that patients treated with REBOA showed improved neurological outcomes, which means they had better brain function following the trauma.

However, the data also highlighted some important safety concerns. The study found a significantly higher rate of complications for patients who underwent the REBOA procedure. While the treatment was linked to lower death rates, it did come with a higher risk of medical complications during the process. This suggests that while the procedure can be life-saving, it is complex and carries specific risks that doctors must manage carefully.

It is important to keep these findings in perspective. Because this analysis included observational data, we cannot say for certain that REBOA caused the lower death rates; rather, there is a strong link between the two. Furthermore, some results, such as those regarding cardiac arrest, had wider ranges of uncertainty. The study also noted that the duration of time the artery was blocked can affect outcomes. For patients and families today, this means that REBOA remains a valuable tool in the hands of experienced medical teams. It is currently preferred for specific types of severe bleeding cases where it can be performed quickly and correctly. While it is not a guaranteed fix, it provides a significant option for saving lives in critical trauma situations.

What this means for you:

REBOA shows a link to lower death rates in severe bleeding cases but carries a higher risk of complications.

Study Details

Study typeMeta analysis

Sample sizen = 9,028

EvidenceLevel 1

PublishedJul 2026

PMID41885281

View Original Abstract ↓

BACKGROUND: Resuscitative endovascular balloon occlusion of the aorta (REBOA) has emerged as a minimally invasive alternative to resuscitative thoracotomy (RT) for noncompressible torso hemorrhage. Comparative effectiveness remains uncertain. This is a systematic review and meta-analysis evaluating the effectiveness and safety of REBOA versus RT in adult trauma patients with exsanguinating hemorrhagic shock or traumatic cardiac arrest. METHODS: A systematic search of MEDLINE, PubMed, Embase, Scopus, and ClinicalTrials.gov was performed through August 2025 for comparative observational studies assessing REBOA versus RT with supraceliac aortic cross-clamping in adults (≥18 y). The primary outcome was in-hospital mortality, with stratified analyses by physiological state (shock vs. cardiac arrest) and early versus late mortality. Secondary outcomes included overall complications, neurological status, and aortic occlusion metrics. RESULTS: Fourteen studies comprising 9,028 patients (2,477 REBOA; 6,551 RT) were included; six studies (2,912 patients) contributed to the primary pooled analysis. REBOA was associated with significantly lower in-hospital mortality (OR: 0.17, 95% CI: 0.10-0.28; I2 =53.2%; moderate-certainty evidence). The benefit was greater in hemorrhagic shock (OR: 0.18, 95% CI: 0.12-0.28) than in cardiac arrest (OR: 0.32, 95% CI: 0.15-0.69). Early mortality showed the most substantial effect (OR: 0.12, 95% CI: 0.07-0.23). REBOA improved neurological outcomes but increased complication rates (OR: 7.81, 95% CI: 3.88-15.72) and prolonged aortic occlusion duration. CONCLUSIONS: REBOA demonstrates superior survival compared with RT in carefully selected patients with trauma, particularly those in hemorrhagic shock. Despite increased complications, current evidence supports REBOA as the preferred aortic occlusion strategy when performed by experienced teams within structured trauma systems. Further research should refine selection criteria and methods to mitigate complication risk. ( J Trauma Acute Care Surg. 2026;101: 162-172. Copyright © 2026 Wolters Kluwer Health, Inc. All rights reserved.). LEVEL OF EVIDENCE: Systematic Review and Meta-Analysis, Level III.

Efficacy of Resuscitative Endovascular Balloon Occlusion of the Aorta in Hemorrhagic ShockREBOA shows potential to lower mortality in severe bleeding cases

How this fits prior evidence

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Efficacy of Resuscitative Endovascular Balloon Occlusion of the Aorta in Hemorrhagic ShockREBOA shows potential to lower mortality in severe bleeding cases

How this fits prior evidence

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