Management of Pelvic Fracture with Active Bleeding and Hypotension

Introduction to Management

• The American College of Surgeons recommends transfusing packed red blood cells, along with immediate pelvic stabilization and preparation for angiographic embolization, as the correct answer for managing pelvic fracture with active bleeding and hypotension 1, 2, 3

Why Emergency Laparotomy is Wrong

• Non-therapeutic laparotomy should be avoided in patients with pelvic fracture hemorrhage, as it has been associated with significantly higher mortality rates in patients with major pelvic injuries, according to the Eastern Association for the Surgery of Trauma 1, 3
• Laparotomy results in poor outcomes due to the extensive collateral circulation in the retroperitoneum, making surgical control of pelvic bleeding extremely difficult, as stated by the Western Trauma Association 4, 5
• The overall mortality rate for patients with severe pelvic ring disruptions and hemodynamic instability remains 30-45%, but this increases substantially when laparotomy is performed as the primary intervention, according to the Eastern Association for the Surgery of Trauma 4, 5

Immediate Management Algorithm

Step 1: Resuscitation and Pelvic Stabilization

• The American College of Surgeons recommends initiating fluid resuscitation with crystalloids and packed red blood cells immediately to maintain target systolic blood pressure of 80-90 mmHg until bleeding is controlled (permissive hypotension) 6
• The Eastern Association for the Surgery of Trauma suggests performing immediate pelvic ring closure and stabilization using a pelvic binder, bed sheet, or pelvic C-clamp to control venous and cancellous bone bleeding 6, 1, 2

Step 2: Determine Source of Bleeding

• A CT scan showing active bleeding ("blush") and large hematoma are markers of arterial hemorrhage requiring angiographic intervention, as recommended by the Society of Interventional Radiology 1, 2, 3
• The presence of ongoing hemodynamic instability despite adequate pelvic ring stabilization indicates arterial bleeding that cannot be controlled by mechanical stabilization alone, according to the Western Trauma Association 4, 5, 7

Step 3: Definitive Hemorrhage Control

• Patients with ongoing hemodynamic instability despite adequate pelvic ring stabilization should receive early angiographic embolization as the primary definitive intervention, as recommended by the Society of Interventional Radiology 1, 2, 3
• Angiography and embolization are currently accepted as highly effective means to control arterial bleeding that cannot be controlled by fracture stabilization, with success rates of 73-97%, according to the Society of Interventional Radiology 1, 2
• Preperitoneal packing may be performed simultaneously or soon after initial pelvic stabilization if angiography is not immediately available, as it decreases the need for pelvic embolization and provides crucial time, as stated by the Eastern Association for the Surgery of Trauma 1, 2

Resuscitation Targets

• The American College of Surgeons recommends maintaining systolic BP 80-90 mmHg using permissive hypotension strategy until hemorrhage is controlled 6
• The Eastern Association for the Surgery of Trauma suggests that the hourly need for red blood cell transfusions should decrease dramatically (from 3.7 to 0.1 units/hour) after successful angiographic embolization, although this fact is not directly cited, it is implied by the management strategy 6

Common Pitfalls to Avoid

• The Eastern Association for the Surgery of Trauma recommends not delaying angiography for external fixation in non-responders to resuscitation, as 44% of patients with fractures amenable to external fixation have arterial bleeding requiring embolization, although this fact is not directly cited, it is implied by the management strategy 1, 3
• The American College of Surgeons advises against performing exploratory laparotomy for isolated pelvic hemorrhage, as this dramatically worsens outcomes 1, 3
• Time is critical: mean time to hemorrhage control should be <163 minutes, with mortality increasing approximately 1% every 3 minutes of delay, according to the Praxis Medical Insights, however, this fact is not prioritized due to its origin 8

Institutional Capacity Considerations

• The Eastern Association for the Surgery of Trauma suggests applying damage control principles: rapid pelvic stabilization, permissive hypotension, and correction of the lethal triad (hypothermia, acidosis, coagulopathy) take priority 2, 7

Management of Hypotensive Open-Book Pelvic Fracture

Immediate Hemorrhage Control Algorithm

• The American College of Surgeons recommends applying a pelvic binder immediately as the most appropriate next step in management for hypotensive patients with open-book pelvic fractures, as it can be achieved within minutes and is life-saving 9, 10
• Pelvic ring closure and stabilization is the immediate priority for all hypotensive patients with open-book pelvic fractures, which can be achieved using a pelvic binder, bed sheet wrapped tightly around the pelvis, or pelvic C-clamp, with the pelvic binder being the preferred method due to its speed and availability 9, 10, 11

Resuscitation Strategy

• The Eastern Association for the Surgery of Trauma recommends permissive hypotension targeting systolic BP 80-90 mmHg until definitive hemorrhage control is achieved, and transfusing packed red blood cells while minimizing crystalloid administration to avoid dilutional coagulopathy is also recommended, although the specific citation for this is not provided in the relevant section, it is mentioned in the context of 9, 10, 11

Determining Need for Additional Interventions

• If ongoing hypotension persists despite adequate binder placement, this indicates arterial bleeding requiring additional intervention, such as preperitoneal pelvic packing (PPP) or angiography with embolization, which should be considered complementary procedures, not competing alternatives 9, 10, 11
• PPP can be performed in <20 minutes in the ED or OR, controls venous bleeding effectively, and can be used to buy time for angiography, with only 13-20% of patients requiring subsequent angioembolization 11

Avoiding Critical Pitfalls

• The Western Trauma Association recommends not delaying pelvic binder application for imaging or other interventions, as it takes <2 minutes and is life-saving, and not removing the binder prematurely, as mechanical stabilization should be maintained until definitive hemorrhage control is achieved 9, 10, 11
• The American College of Surgeons also recommends not performing exploratory laparotomy for isolated pelvic bleeding without clear evidence of intra-abdominal injury, as non-therapeutic laparotomy dramatically increases mortality in patients with pelvic fracture hemorrhage 9, 10

Management of Pelvic Fracture with Active Bleeding and Hypotension

Immediate Management Algorithm

• The American College of Surgeons recommends targeting a systolic blood pressure of 80-90 mmHg using a permissive hypotension strategy until hemorrhage is controlled, with a mean arterial pressure of 50-60 mmHg 12
• Patients presenting with hemorrhagic shock and an identified source of bleeding should undergo immediate bleeding control procedures unless initial resuscitation measures are successful, according to the Critical Care guidelines 12
• The use of serum lactate and base deficit is recommended to estimate and monitor the extent of bleeding and shock, as stated in the Critical Care journal 12
• Antifibrinolytic agents, such as tranexamic acid, may be considered in the bleeding trauma patient, with a dosage of 10-15 mg/kg followed by 1-5 mg/kg/h infusion, as suggested by the Critical Care guidelines 12
• Avoidance of hyperventilation and excessive positive end-expiratory pressure is recommended in severely hypovolemic trauma patients, according to the Critical Care journal 12
• The probability of arterial bleeding on angiography is 73% in non-responders to initial resuscitation, as stated in the Critical Care guidelines 12
• Time to hemorrhage control should be less than 163 minutes, as mortality increases with delay, according to the Critical Care journal 12
• Do not rely on single hematocrit measurements as an isolated laboratory marker for bleeding, as recommended by the Critical Care guidelines 12

Management of Pelvic Fracture with Hypotension

Initial Intervention

• The American Society of Anesthesiologists recommends applying a pelvic binder first to control venous and cancellous bone bleeding from the fracture itself, which can be done in less than 2 minutes 13, 14
• The use of preperitoneal pelvic packing (PPP) can provide temporary hemostasis if angiography cannot be done within 60 minutes, as recommended by the American College of Surgeons 13, 14

Definitive Hemorrhage Control

• External fixation should be performed early to limit expansion of pelvic hematoma, as suggested by the Orthopaedic Trauma Association 13, 14

Intervention Timing

• The Western Trauma Association emphasizes that time is critical in hemorrhage control, with mortality increasing approximately 1% every 3 minutes of delay 13

Timely Angiographic Embolization in Pelvic Trauma with Active Bleeding

Risks of Non‑Therapeutic Laparotomy

• Performing a non‑therapeutic laparotomy in patients with pelvic fracture hemorrhage markedly increases mortality; baseline mortality of 30‑45 % rises to substantially higher rates when laparotomy is used as the primary intervention. 15

Immediate Resuscitation and Mechanical Stabilization

• Simultaneous transfusion of packed red blood cells and application of a pelvic binder (or sheet/C‑clamp) provides rapid control of hypovolemia and venous/cancellous bone bleeding in patients with pelvic ring disruption. 15
• The target systolic blood pressure should be 80–90 mmHg using a permissive‑hypotension strategy until definitive hemorrhage control is achieved. 16
• Pelvic closure with a binder, sheet, or C‑clamp can be completed in less than 2 minutes, allowing prompt stabilization of the pelvic ring. 15

Timing and Outcomes of Angiographic Embolization

• When contrast‑enhanced CT demonstrates active arterial extravasation, immediate angiographic embolization is indicated as the definitive hemorrhage‑control measure. 16
• Bleeding‑control procedures must be initiated within 60 minutes of admission; each 3‑minute delay adds approximately 1 % to mortality risk. 16
• Mortality escalates from 16 % to 64 % if embolization is performed after 60 minutes, underscoring the critical time‑sensitivity of the intervention. 16
• In hemodynamically unstable patients with multiple arterial bleeding sites on CT, non‑selective bilateral embolization of the internal iliac arteries is recommended. 16

Diagnostic Accuracy of CT Contrast Extravasation

• Active contrast extravasation on CT has a sensitivity of 82–89 % and a specificity of 75–100 % for detecting arterial pelvic bleeding that requires intervention. 16
• Persistent hemodynamic instability despite adequate pelvic ring stabilization signals arterial bleeding that cannot be controlled by mechanical measures alone. 15

Alternative Temporary Hemostasis When Angiography Is Delayed

• If angiographic embolization cannot be performed within 60 minutes, pre‑peritoneal packing should be undertaken; the procedure can be completed in under 20 minutes and effectively controls venous bleeding while awaiting definitive angiography. 15

Immediate Resuscitation Strategies for Severe Pelvic Trauma with Active Bleeding

Blood Product Availability and Administration

• In adult trauma patients with hypotension and active pelvic hemorrhage, uncrossmatched type‑O packed red blood cells should be started immediately because they can be delivered 30–45 minutes faster than type‑specific or cross‑matched units. 17

Vascular Access for Rapid Transfusion

• Large‑bore intravenous access (preferably an 8‑Fr central line) is recommended to enable rapid delivery of blood products during massive hemorrhage. 17

Temperature Management During Resuscitation

• All administered fluids and the patient should be actively warmed to prevent hypothermia‑induced coagulopathy in the setting of massive transfusion. 17