• Marta J Madurska, Ashley McLenithan, Thomas M Scalea, Rishi Kundi, Joseph M White, Jonathan J Morrison, and Joseph J DuBose.
• R Adams Cowley Shock Trauma Center, University of Maryland Medical System, 22 S. Greene Street, Baltimore, MD, 21201, USA.
• Eur J Trauma Emerg Surg. 2022 Feb 1; 48 (1): 299-305.

PurposeResuscitative endovascular balloon occlusion of the aorta (REBOA) is used to temporize patients with infradiaphragmatic hemorrhage. Current guidelines advise < 30 min, to avoid ischemia/ reperfusion injury, whenever possible. The technique of partial REBOA (P-REBOA) has been developed to minimize the effects of distal ischemia. This study presents our clinical experience with P-REBOA, comparing outcomes to complete occlusion (C-REBOA).Patients And MethodsRetrospective analysis of patients' electronic data and local REBOA registry between January 2016 and May 2019.Inclusion Criteriaadult trauma patients who received Zone I C-REBOA or P-REBOA for infradiaphragmatic hemorrhage, who underwent attempted exploration in the operating room. Comparison of outcomes based on REBOA technique (P-REBOA vs C-REBOA) and occlusion time (> 30 min, vs ≤ 30 min) RESULTS: 46 patients were included, with 14 treated with P-REBOA. There were no demographic differences between P-REBOA and C-REBOA. Prolonged (> 30 min) REBOA (regardless of type of occlusion) was associated with increased mortality (32% vs 0%, p = 0.044) and organ failure. When comparing prolonged P-REBOA with C-REBOA, there was a trend toward lower ventilator days [19 (11) vs 6 (9); p = 0.483] and dialysis (36.4% vs 16.7%; p = 0.228) with significantly less vasopressor requirement (72.7% vs 33.3%; p = 0.026).ConclusionP-REBOA can be delivered in a clinical setting, but is not currently associated with improved survival in prolonged occlusion. In survivors, there is a trend toward lower organ support needs, suggesting that the technique might help to mitigate ischemic organ injury. More clinical data are needed to clarify the benefit of partial occlusion REBOA.© 2021. Springer-Verlag GmbH Germany, part of Springer Nature.

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