LAUSR

Purpose Use of Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) as adjunct for temporary hemorrhage control in patients with exsanguinating torso hemorrhage is increasing. Characteristics of aortic occlusion balloons (AOB) are diverse and evolving as efforts are made to improve the technology. It is important to select a device that fits the requirements of the medical situation to minimize the risk of failure and complications. The aim of this study is to appraise guidance in the choice of an AOB in a specific situation. Methods We assessed 29 AOB for differences and outline possible advantages and disadvantages of each. Bending stiffness was measured with a three-point bending device. Results Diameter of the AOB ranged from 6 (ER-REBOA™) to 10 (Coda ® -46) French. However, some need large-bore access sheaths up to 22 French (Fogarty ® -45 and LeMaitre ® -45) or even insertion via cut-down (Equalizer™-40). Bending stiffness varied from 0.08 N/mm (± 0.008 SD; Coda ® -32) to 0.72 N/mm (± 0.024 SD; Russian prototype). Rescue Balloon™ showed kinking of the shaft at low bending pressures. The only non-compliant AOB is REBOA Balloon ® . ER-REBOA™, Fogarty ® , LeMaitre ® , REBOA Balloon ® , and Rescue Balloon™ are provided with external length marks to assist blind positioning. Conclusion In resource-limited settings, a guidewire- and fluoroscopy-free, rather stiff device, such as ER-REBOA™, Fogarty ® , and LeMaitre ® , is warranted. Of these devices, ER-REBOA™ is the only catheter compatible with seven French sheaths and specifically designed for emergency hemorrhage control. Of the over-the-wire devices, Q50 ® has several features that facilitate use and reduce the risk of malplacement or vessel damage.