Vascular Trauma Systems, Evaluation, Damage Control, and Regional Patterns

62.1Read the bleed, then pick the route

The first vascular trauma decision is whether the patient is bleeding faster than the team can diagnose, move, and control. The question is not whether the eventual repair will be open, endovascular, or hybrid; it is which route gives the patient the earliest credible source control while preserving enough physiology for definitive care. ATLS-style primary assessment and contemporary ESVS vascular trauma guidance both support organising the first minutes around physiology, mechanism, injury zone, and vascular signs rather than around a favourite technique Editor's Choice European 2025 · ACS ATLS 2018.

Three bedside states are useful. The exsanguinating patient has no reserve for diagnostic elegance and usually needs immediate operative, hybrid, or temporising control. The unstable but still compensating patient may tolerate a very short diagnostic or room-choice interval only if that interval brings the team closer to control. The stable patient with a credible vascular injury can undergo structured imaging and serial examination, but stability is a permission for disciplined diagnosis, not for drift. The European trauma bleeding guideline and the ESVS vascular trauma guideline frame these choices as linked decisions about hemorrhage control, imaging, physiology, and capability, not as a fixed sequence for every injury Editor's Choice European 2025 · European guideline 2023.

Hard signs are clinical commands. Active pulsatile bleeding, an expanding hematoma, absent distal pulses, bruit or thrill, distal ischemia, and shock with a plausible vascular source should shorten the diagnostic phase and push the patient toward immediate control. Soft signs such as a history of major bleeding, proximity injury, neurologic deficit near the injured vessel, a non-expanding hematoma, or an injured but perfused extremity may allow computed tomography angiography, duplex assessment in selected settings, serial examination, or selective angiography. They do not allow the limb or the physiology to be ignored; soft signs buy time only while perfusion, blood pressure, and local capability remain aligned Editor's Choice European 2025 · ACS ATLS 2018.

The surgeon’s first useful statement should name a control route. For an exsanguinating extremity wound, that may be direct pressure, proximal and distal exposure, clamps, shunt planning, and fasciotomy readiness. For pelvic or junctional bleeding, the fastest credible route may be a hybrid sequence with access, balloon control, embolisation, stent-graft placement, or open exposure depending on anatomy and team readiness. The German endovascular hemorrhage-control guidance and ESVS vascular trauma guidance support treating endovascular options as part of a prepared control pathway, not as a device chosen after the patient has collapsed EVTM 2025 · Editor's Choice European 2025.

Damage-control resuscitation should start when the bleeding pattern declares itself. Major hemorrhage care is not serial care in which imaging, room transfer, operation, and transfusion happen one after another; it is concurrent care in which product resuscitation, warming, coagulopathy management, access, anesthesia, and source control move together. The AAST and ACS-COT protocol and the European bleeding guideline both support this parallel approach, while leaving exact product ratios, drug timing, and hemodynamic targets to the named protocol and local policy used by the treating system AAST 2024 · European guideline 2023.

When the physiology, signs, and institutional capability do not point in the same direction, the decision becomes regional. A low-capability center may still be the right first control point if transfer would outlast the patient’s reserve; a high-capability center should still choose open control if that is the shortest path to the bleeding source. The stable patient can be imaged; the unstable patient can sometimes be bridged; the exsanguinating patient needs a room, team, and maneuver that can change the bleeding now. The pathway is deliberately simple: read the bleed, identify the signs, choose the route to control, activate resuscitation in parallel, and reassess after every move.

62.2Capability maps, transfer time, and the receiving hybrid pathway

A regional trauma system helps the vascular surgeon only when it is translated into a live capability map. The map should say which injuries can be controlled locally, which require a bridge plus transfer, and which should move directly to a center with vascular surgery, trauma surgery, anesthesia, interventional capability, blood-bank support, theatre access, and intensive-care capacity. The 2025 Cochrane review of organized trauma systems and designated trauma centers supports system-level organization, while contemporary vascular-trauma registry work such as VISTA describes where vascular trauma reaches care and how resources are used; neither source justifies promising that one regional design will reproduce the same results in every geography Organised trauma systems 2025 · Vascular Interventions Surgery 2026.

Transfer is a time-to-control decision, not a prestige decision. The sending team should ask whether the patient can survive the interval from the current bed to the first effective control maneuver at the receiving center. That interval includes recognition, call acceptance, packaging, transport, arrival processing, movement to theatre or angiography, anesthetic readiness, vascular access, and the first clamp, balloon, shunt, embolic agent, stent-graft, or packing maneuver that changes the bleeding. ESVS vascular trauma guidance supports explicit referral and regional planning, but the bedside decision remains conditional on physiology and on the bridge measures available before and during transport Editor's Choice European 2025.

The transfer conversation should be operationally specific. The sending clinician should communicate mechanism, physiology, current transfusion requirement, hard and soft vascular signs, suspected vessel and zone, limb perfusion, control measures already applied, imaging already obtained, anticoagulant or antiplatelet concerns when known, and why local definitive control is not appropriate. The receiving team should answer with a destination and first-control plan. “Bring the patient to the hybrid room for femoral access and pelvic hemorrhage control” is different from “bring the patient to theatre for proximal control and shunting,” and both are different from “control locally before transfer.” Those distinctions matter because they determine who is waiting, which instruments are opened, and what happens in the first minute after arrival.

The receiving hybrid pathway should exist before the call arrives. Triggers generally include unstable hemorrhage with a plausible vascular source, pelvic or junctional bleeding, a named major vascular injury, or transfer-in for vascular control. Once activated, vascular surgery, trauma surgery, anesthesia, emergency medicine, interventional radiology, radiology, blood bank, theatre staff, and intensive care need common activation criteria and communication terms. ESVS vascular trauma guidance and the German endovascular hemorrhage-control guideline support organising this capability around prepared teams, imaging, access, equipment, and definitive-control planning rather than around a device in isolation EVTM 2025 · Editor's Choice European 2025.

Equipment readiness is a clinical variable. Sheaths, wires, occlusion balloons, covered stents, embolic agents, vascular clamps, temporary shunts, graft options, fasciotomy instruments, completion-imaging capability, warming equipment, and blood-product pathways should not be searched for after decompensation. Roles should be equally explicit: who obtains access, who confirms position, who performs open exposure if the endovascular route fails, who manages anticoagulation choices, who records clamp or balloon time, who reassesses distal perfusion, and who closes or surveils the access site. A hybrid room without assigned roles is just a room with more equipment; it becomes a vascular trauma pathway only when the team can move from diagnosis to control without renegotiating responsibility at each step.

Registry and service-evaluation data should be used with restraint. VISTA can help a region recognise case mix, concentration of expertise, resource use, and potential gaps, and the Cochrane trauma-systems review supports the broader logic that organized systems can improve injured-patient care. But distance, rurality, weather, blood availability, interventional staffing, theatre access, and the experience of the receiving team all change what a nominally similar system can deliver. The practical output is a local routing plan with escalation options, not a universal transfer-time threshold Organised trauma systems 2025 · Vascular Interventions Surgery 2026.

62.3Damage-control resuscitation runs alongside haemorrhage control

Damage-control resuscitation is the physiologic counterpart of source control, not a late label applied after conventional care has failed. Once major hemorrhage is recognised, the treating system should align hemorrhage control, balanced product resuscitation, active warming, coagulopathy management, tranexamic-acid decisions where indicated, calcium and adjuncts according to local protocol, and repeated reassessment. The AAST and ACS-COT adult trauma protocol and the European trauma bleeding guideline both frame these elements as concurrent care, while keeping exact ratios, drug windows, fibrinogen triggers, and hemodynamic targets tied to the specific protocol and patient phenotype AAST 2024 · European guideline 2023.

Balanced component therapy is a source-informed principle, not a licence to quote a single universal ratio in every trauma patient. PROPPR is the key trial informing discussions of plasma, platelet, and red-cell balance in severe bleeding, but its comparison should be read through the current institutional massive-transfusion protocol rather than converted into an unqualified rule for all vascular injuries AAST 2024 · JAMA 2015. Tranexamic-acid use requires the same discipline. Trauma bleeding guidance supports early consideration when the bleeding pattern and timing fit, while traumatic brain injury contexts require attention to evidence such as CRASH-3 rather than assuming that every hemorrhage pathway and every head-injury pathway are interchangeable European guideline 2023 · Effects tranexamic acid 2019.

For the vascular surgeon, the damage-control mindset changes the operative question. The elective question is how to build the best reconstruction. The trauma question is what maneuver stops bleeding, restores enough perfusion, limits avoidable limb loss, and gets the patient to the next phase alive. That may mean proximal and distal control before formal debridement, temporary shunting before graft choice, packing or balloon tamponade before definitive reconstruction, staged fasciotomy when compartment risk is high, or abbreviated endovascular control before open completion. Contemporary vascular trauma guidance and vascular damage-control literature support these temporising maneuvers as bridges to definitive repair when physiology, contamination, exposure, or competing injuries make a complete repair unsafe in the first sitting Editor's Choice European 2025 · Damage Control Vascular 2017.

The resuscitation team and the control team should work to the same clock. Product delivery, warming, anesthetic induction, access selection, imaging, surgical exposure, balloon use, shunt flow, embolisation, and transfer all change one another. When the surgeon asks for permissive hypotension, aortic occlusion, temporary shunting, or immediate movement to a hybrid room, the rest of the team needs to know whether that request is a bridge to an imminent control point or an open-ended attempt to buy time. Reassessment should follow each meaningful event: tourniquet adjustment, incision, clamp application, balloon inflation, shunt placement, embolisation, transfusion response, return of distal signals, and correction or persistence of coagulopathy AAST 2024 · European guideline 2023.

Cross-location communication is a resuscitation intervention. A patient may move from road to trauma bay, from trauma bay to theatre, from theatre to angiography, from a sending hospital to a receiving center, and from operative care to intensive care while the bleeding source is only temporarily controlled. Each transition should state the suspected or confirmed source, current control measure, product exposure, temperature, acid-base and coagulation status when available, limb perfusion, shunt or balloon status, access-site risk, planned next operation, and the person responsible for the next control decision. The AAST and ACS-COT protocol supports this integrated approach to damage-control resuscitation rather than a fragmented model of separate resuscitation, operation, and intensive-care episodes AAST 2024.

Special populations are where discipline matters most. Pediatric, pregnant, elderly, anticoagulated, and severely comorbid patients may still follow the same geometry of care: read the tempo, control the source, resuscitate with intention, reassess, and state the next control point. The thresholds and product choices, however, should be read from the relevant trauma, obstetric, pediatric, haematology, and local protocols rather than inferred from an adult default. The safe vascular plan is the one that makes the next physiologic objective explicit and avoids pretending that one resuscitation recipe or one damage-control sequence fits every injury Editor's Choice European 2025 · European guideline 2023.

62.4Aortic occlusion as a prepared bridge, not an improvisation

Aortic occlusion is a bridge to definitive hemorrhage control. Whether achieved by open thoracic clamping or by resuscitative endovascular balloon occlusion of the aorta, its purpose is to transiently redirect pressure and flow so that laparotomy, pelvic hemorrhage control, junctional control, embolisation, stent-graft placement, packing, or another definitive maneuver can be reached. The WTA REBOA algorithm and modern REBOA program consensus both place the technique inside a prepared sequence rather than treating balloon inflation as an isolated rescue act DELPHI CONSENSUS ALGORITHM 2025 · REBOA 2022.

Before a balloon is placed, the team should be able to name the owner of each critical step. Someone obtains and secures arterial access. Someone decides and confirms the occlusion zone. Someone records occlusion time and physiologic response. Someone plans complete or partial reduction when the source is controlled or when physiology demands change. Someone watches the limb and access site. Most importantly, someone owns definitive hemorrhage control. If those owners cannot be named, the balloon has no organized destination and may convert one uncontrolled problem into another. The same rule applies to an open aortic clamp: the clamp is not the treatment; it is a temporary bridge to treatment DELPHI CONSENSUS ALGORITHM 2025 · REBOA 2022.

Anatomic zone and clinical state decide whether endovascular occlusion is plausible. Arrest or near-arrest physiology, absent imaging, hostile groin access, pelvic versus intra-abdominal bleeding, operator skill, and immediate theatre or angiography availability all change the risk-benefit calculation. A femoral pulse that cannot be found, a groin distorted by injury, or an inexperienced team may make REBOA slower and less controlled than open exposure. Conversely, a prepared team facing pelvic or junctional hemorrhage may use femoral access, occlusion, embolisation, covered stenting, or open exposure as parts of a coordinated hybrid sequence. The German endovascular hemorrhage-control guideline supports this capability-based view of endovascular control rather than a one-device threshold EVTM 2025.

Modern REBOA practice has moved beyond a binary inflated-or-not-inflated discussion. Partial and titratable occlusion concepts are intended to balance proximal perfusion against distal ischemia and reperfusion injury, but they increase the need for monitoring rather than reducing it. A team that cannot reliably track position, pressure response, distal perfusion, access-site risk, and the next definitive step should not treat a more sophisticated catheter as a safety solution. The modern REBOA Delphi work supports program structure, titration discipline, and ownership of reduction rather than a universal partial-occlusion or duration threshold DELPHI CONSENSUS ALGORITHM 2025.

Aortic occlusion also changes the resuscitation conversation. Balloon inflation or clamp application may transiently improve proximal pressure while worsening distal ischemia and making definitive control urgent. Reduction can expose persistent bleeding, vasoplegia, acidosis, hypocalcaemia, coagulopathy, and reperfusion physiology. For that reason, product resuscitation, warming, coagulopathy management, anesthesia, distal-perfusion surveillance, and access-site surveillance must be ready before occlusion is treated as the plan. The WTA algorithm, modern REBOA consensus, and damage-control resuscitation guidance all point in the same direction: use occlusion only when it shortens the path to control and when the team is prepared for what comes after reduction DELPHI CONSENSUS ALGORITHM 2025 · AAST 2024 · REBOA 2022.

Endovascular hemorrhage-control measures beyond REBOA follow the same rule. Selective embolisation, covered stent placement, temporary balloon tamponade, and hybrid open-endovascular sequences can be powerful when they are integrated with exposure options, blood products, anesthesia, imaging, and plans for access-site and distal-perfusion surveillance. They are dangerous when they distract from definitive control or create an unowned downstream hazard. In vascular trauma, the decisive question is whether the maneuver shortens the path to durable control in this anatomy, with this physiology, in this room, with this team EVTM 2025 · Editor's Choice European 2025.

62.5Evidence boundaries: what trauma-systems sources do and do not support

The strongest claims in vascular trauma systems are structural. The sources support organising care around hemorrhage tempo, vascular signs, physiology, source-control route, regional capability, damage-control resuscitation, and prepared aortic occlusion. They support designated trauma systems, explicit referral pathways, hybrid capability where available, and disciplined resuscitation. They do not support turning every local decision into a universal number. The Cochrane trauma-systems review and VISTA registry context are useful for system logic and pattern recognition, but they should not be read as proof that one service configuration will deliver the same survival, limb, or process outcomes in every region Organised trauma systems 2025 · Vascular Interventions Surgery 2026.

Transfer thresholds illustrate the boundary. One remote hospital with a trained surgeon, blood products, and an immediately available operating theatre may be the right first control point for an unstable patient. Another hospital with the same label may be unsafe for the same injury if no one can control the vessel, if blood is limited, or if transfer can reach a prepared receiving team before physiology deteriorates. ESVS vascular trauma guidance supports regional planning and referral logic, but the boundary between stay-and-control, bridge-and-transfer, and direct hybrid activation remains a local clinical decision made against the patient’s physiology and available route to control Editor's Choice European 2025.

Damage-control resuscitation has the same limitation. The adult trauma protocol and European bleeding guideline support the package of source control, balanced product resuscitation, warming, coagulopathy management, tranexamic-acid decisions where indicated, and repeated physiologic reassessment. PROPPR informs component-therapy discussions, and CRASH-3 informs traumatic-brain-injury tranexamic-acid discussion, but those sources should not be flattened into a single transfusion ratio, drug timing rule, or fibrinogen threshold for every vascular trauma patient. Exact resuscitation targets should be read from the current protocol and local policy used by the treating team AAST 2024 · European guideline 2023 · Effects tranexamic acid 2019 · JAMA 2015.

Aortic occlusion is even less suitable for numeric shortcuts detached from context. Zone choice, occlusion duration, partial or titratable reduction, distal-perfusion risk, access-site risk, and tolerance of ischemia depend on anatomy, physiology, operator skill, equipment, and time to definitive control. WTA guidance and modern REBOA consensus support prepared use with named ownership; they do not turn aortic occlusion into a universal duration threshold or a substitute for source control DELPHI CONSENSUS ALGORITHM 2025 · REBOA 2022.

The practical stance is confident but conditional. Be firm about the sequence: read the bleed, identify hard and soft signs, choose the route to control, activate resuscitation, map capability, transfer only when time and physiology justify it, and use aortic occlusion only as a prepared bridge. Be cautious about claims that promise a specific outcome from a system model, a device, a transfer pattern, or a resuscitation ratio without matching the local setting and patient phenotype. Vascular trauma rewards preparation because preparation compresses time to control; the admitted sources support that systems logic more strongly than they support universal numeric shortcuts EVTM 2025 · Editor's Choice European 2025 · Organised trauma systems 2025.