Severe pelvic fractures, often the result of high-energy trauma such as motor vehicle collisions or falls from height, can be associated with substantial, rapid blood loss because of the dense network of arteries and veins running through the pelvic bones and surrounding tissue. When bleeding from a pelvic fracture threatens a patient's hemodynamic stability, angiography and embolization have become a core part of the damage-control response used alongside surgical and resuscitative measures. Understanding this role clarifies why interventional radiology is frequently part of the trauma team's toolkit.
Why Does Pelvic Trauma Cause Such Significant Bleeding?
The pelvis houses a complex arterial network, including branches of the internal iliac arteries, along with an extensive venous plexus, all situated close to bone that can fracture into multiple fragments during high-energy trauma. Bleeding from these injured vessels can accumulate within the retroperitoneal space, which has significant capacity to conceal a large volume of blood loss before external signs become obvious — making rapid identification and control of the bleeding source a time-critical priority.
How Does Embolization Fit Into the Broader Trauma Response?
Pelvic trauma embolization is typically considered as part of a broader, coordinated approach that may include external pelvic stabilization (such as a pelvic binder or external fixator), resuscitation with blood products, and surgical intervention when needed. Embolization specifically targets the arterial component of pelvic hemorrhage that is not accessible or controllable through external stabilization alone. The decision to proceed to angiography and embolization is generally made rapidly by the trauma team based on ongoing hemodynamic instability and imaging findings suggesting active arterial bleeding.
What Happens During the Embolization Procedure?
Once the decision to proceed is made, arterial access is obtained — typically through the femoral artery — and a catheter is advanced to perform angiography of the pelvic vessels, looking for contrast extravasation that indicates active bleeding. Embolic material is then deployed to occlude the bleeding vessel or vessels; because pelvic bleeding may originate from multiple sites given the extent of trauma, more than one vessel may require treatment in the same session. Speed and efficiency are paramount in this setting, since the procedure is being performed on a patient who may be actively losing blood.
What Embolic Devices Are Used in This Emergency Setting?
Device selection in pelvic trauma embolization depends on the size and flow characteristics of the injured vessel, as well as the need for rapid, reliable occlusion under time pressure. Vascular plugs are sometimes used for larger vessels where a single-device occlusion can be achieved quickly, while coils offer flexibility for smaller or more irregular bleeding points. The overriding clinical priority in this damage-control context is achieving durable hemostasis (bleeding control) as efficiently as possible.
What Does Recovery and Follow-Up Involve?
Recovery after pelvic trauma embolization is generally dictated far more by the severity of the overall trauma — including associated fractures, other organ injuries, and the physiologic impact of blood loss — than by the embolization procedure itself. Patients are typically monitored closely in an intensive care setting following the procedure, with attention to signs of rebleeding, as well as monitoring for potential complications related to reduced blood flow to pelvic structures, coordinated by the full trauma and critical care team.
Embolic Devices for Rapid Hemostasis
Damage-control embolization in trauma settings depends on embolic devices capable of achieving fast, reliable vessel occlusion under time pressure. INVAMED manufactures the MultiBEAM Embolization Plug, a self-expanding occlusion device with manufacturer-reported indications that include pelvic bleeding, designed for delivery via compatible catheters or guide sheaths. Further information is available on the MultiBEAM Embolization Plug product page. Availability and indications vary by country, and the Instructions for Use (IFU) should always be consulted.
Device availability and regulatory status vary by country. Please contact INVAMED or your authorized local distributor for current regulatory information applicable to your region.