Management of Large Muscular Hematoma

Initial Assessment and Stabilization

The American Society of Anesthesiologists recommends securing large-bore IV access and beginning immediate hemostatic management, including applying direct pressure, administering high-flow oxygen, and obtaining baseline coagulation studies, for patients with large muscular hematoma 1, 2
The American College of Surgeons suggests obtaining baseline coagulation studies, including PT, aPTT, Clauss fibrinogen, platelet count, and cross-match, for patients with large muscular hematoma 1, 2
The use of near-patient testing with thromboelastography (TEG) or thromboelastometry (ROTEM) is recommended for patients with large muscular hematoma, as it can help guide hemostatic management 1, 2

The American Heart Association recommends administering prothrombin complex concentrate (PCC) immediately for patients on warfarin with a large muscular hematoma, with a dose of 25 units/kg PCC for INR 2-3.9, 35 units/kg PCC for INR 4-5.9, and 50 units/kg PCC for INR >6 4

The American College of Emergency Physicians suggests resuscitating patients with large muscular hematoma using warmed blood products, not crystalloids alone, and maintaining a 1:1 ratio of red blood cells to fresh frozen plasma until coagulation results are available 3
The Society of Critical Care Medicine recommends targeting fibrinogen >1.5 g/L and platelet count >75 × 10⁹/L for patients with large muscular hematoma, as levels below these thresholds are associated with increased bleeding risk 4, 5
The use of tranexamic acid within 3 hours of bleeding onset is recommended for patients with large muscular hematoma, with a loading dose of 1 g IV over 10 minutes and maintenance dose of 1 g IV over 8 hours 3, 5

The American Society of Anesthesiologists recommends admitting patients with large muscular hematoma to critical care for monitoring, with frequent assessment of platelet count, fibrinogen, PT, and aPTT, and monitoring for signs of rebleeding or compartment syndrome 4, 5
The American College of Chest Physicians suggests initiating venous thromboprophylaxis as soon as bleeding is controlled, as patients with large muscular hematoma are at high risk of developing venous thromboembolism 4, 5