Table 2

Partial REBOA rollout collaborative institutional algorithms for REBOA patient selection

Institution	Data sources cited	Trigger for early CFA access	Contraindications to REBOA	Criteria for REBOA patient selection
Ernest E Moore Shock Trauma Center at Denver Health (Denver, Colorado)	No	SBP <100: 5Fr. SBP <90: 7Fr. SBP <80: REBOA.	Active thoracic bleeding.	SBP <80 and cavitary triage.
Grady Memorial Hospital (Atlanta, Georgia)	No	Concern for truncal hemorrhage. SBP <90, received 2 units of blood product, or transient transponder.	Not specified.	SBP <90. Transient responder to resuscitation. Non-responder to 2 units of blood. Traumatic cardiac arrest.
Grant Medical Center (Columbus, Ohio)	No	SBP <90. Transient responder. Profound, refractory shock. OHCA with ROSC.	Not specified.	SBP <90 with inadequate response to resuscitation. Profoundly hypotensive. Hypovolemic cardiac arrest and not beyond salvage.
University of Maryland Shock Trauma Center (Baltimore, Maryland)	No	None specified.	Not specified.	Persistently hypotensive or transient responder. Low suspicion for aortic injury. Evidence of vascular continuity from CFA to thoracic aorta. Attending trauma surgeon or intensivist discretion.
St Michael’s Hospital (Toronto, Ontario)	Yes	Pelvic fracture. Positive FAST and SBP <90.	Not specified.	Traumatic arrest for abdominal/pelvic/junctional hemorrhage provided reversible cause suspected. SBP <90 and transient or non-responder with positive abdominal FAST or pelvic X-ray (blunt) or abdominal/pelvic/junctional injury (penetrating).
University Medical Center New Orleans (New Orleans, Louisiana)	Yes	SBP <90 and partial or non-responder.	Blunt: possible aortic injury on CXR. Penetrating: possible supradiaphragmatic or cardiac injury.	Blunt: SBP <90 and partial or non-responder. Penetrating: SBP <90 and truncal/lower extremity injury (in OR). In OR: SBP <90, transient responder, profound refractory shock, or prehospital CPR with ROSC.
Vanderbilt University Medical Center (Nashville, Tennessee)	No	SBP <80 with a pulse.	Thoracic aortic injury.	Transient or non-responder.

CFA, common femoral artery; CPR, cardiopulmonary resuscitation; CXR, chest X-ray; FAST, focused assessment with sonography in trauma; Fr, French; OHCA, out of hospital cardiac arrest; OR, operating room; REBOA, resuscitative endovascular balloon occlusion of the aorta; ROSC, return of spontaneous circulation; SBP, systolic blood pressure.