Management of Traumatic Soft Tissue Hematomas

Initial Assessment and Stabilization

The American College of Surgeons recommends assessing hemodynamic status using the ATLS classification system, which categorizes patients based on blood loss percentage, vital signs, mental status, and urine output, to guide initial management and resuscitation efforts 1, 2
Baseline labs, including CBC, PT, aPTT, fibrinogen, serum lactate, and base deficit, should be obtained to estimate bleeding severity and guide further management, with the strength of evidence for this recommendation being moderate to high 1, 2
The Society of Critical Care Medicine advises against relying on single hematocrit measurements as an isolated marker for bleeding, as they can be misleading in acute hemorrhage, and instead recommends using a combination of clinical and laboratory parameters to assess bleeding severity 3, 2

The American Heart Association recommends securing large-bore IV access and initiating crystalloid resuscitation for patients with hemodynamic instability, with a target systolic blood pressure of 80-100 mmHg until bleeding is controlled, unless there is concern for intracranial bleeding, in which case systolic BP should be maintained <140 mmHg 3, 2
Direct pressure should be applied to the hematoma site, and the patient should be actively warmed to prevent hypothermia, with the strength of evidence for these recommendations being high 2
The Eastern Association for the Surgery of Trauma recommends monitoring for compartment syndrome, including assessing for the "5 P's" (pain, pressure, pallor, paresthesias, and pulselessness) and monitoring for progressive swelling, tense compartments, and declining neurovascular status, with the strength of evidence for this recommendation being moderate to high 4

The American College of Radiology recommends obtaining imaging to characterize the hematoma and rule out ongoing bleeding in hemodynamically stable patients, with ultrasound being rapidly available but having low sensitivity, and CT with contrast being preferred for stable patients to identify active extravasation, with the strength of evidence for this recommendation being high 5, 1
Active bleeding with hemodynamic instability requires immediate surgical control, according to the Society of Critical Care Medicine, with the strength of evidence for this recommendation being high 3, 6

The American College of Chest Physicians recommends immediately checking anticoagulation status and reversing if present, with prothrombin complex concentrates being used for rapid reversal of warfarin-associated bleeding, and tranexamic acid being considered if fibrinolysis is suspected, with the strength of evidence for these recommendations being moderate to high 4, 3
Early, repeated measurements of PT, aPTT, fibrinogen, and platelets should be performed to detect post-traumatic coagulopathy, according to the Society of Critical Care Medicine, with viscoelastic testing being used if available to guide hemostatic therapy, with the strength of evidence for these recommendations being moderate to high 6

The American College of Emergency Physicians recommends admitting patients with hemodynamic instability, ongoing bleeding, or compartment syndrome risk to ICU for close monitoring, with the strength of evidence for this recommendation being high 2
For stable patients managed conservatively, follow-up should be arranged within 48-72 hours to reassess, according to the Society of Critical Care Medicine, with the strength of evidence for this recommendation being moderate 1