Epidural Hematoma in Emergency Medicine Workup
- Author: Daniel D Price, MD; Chief Editor: Rick Kulkarni, MD more...
Laboratory Studies
Perform appropriate laboratory work for associated trauma.
Coagulation abnormalities are a marker of severe head injury. Breakdown of the blood-brain barrier with exposed brain tissue is a potent cause of disseminated intravascular coagulation (DIC).
Imaging Studies
Head CT scan
Immediate unenhanced CT scan is the procedure of choice for diagnosis.
Head CT scan shows location, volume, effect, and other potential intracranial injuries.
Epidural hematoma (EDH) forms an extraaxial, smoothly marginated, lenticular, or biconvex homogenous density.
EDH rarely crosses the suture line because the dura is attached more firmly to the skull at sutures.
Focal isodense or hypodense zones within EDH indicate active bleeding.
Irregular hypodense swirling indicates active bleeding in the majority of patients.
Air in acute EDH suggests fracture of sinuses or mastoid air cells.
At surgery or autopsy, 20% of patients have blood in both epidural and subdural spaces.
Other Tests
Cervical spine evaluation usually is necessary because of the risk of neck injury associated with EDH.
Procedures
Perform burr hole(s) if the following occur:
- Patient is herniating
- All other treatments prove insufficient
- Neurosurgery is unavailable for urgent consultation
- Trephination (or placement of a Burr hole) should ideally be performed if possible by the consulting neurosurgeon at the receiving trauma center
- Air or ground medical transport is prolonged
Burr hole procedure includes the following:
- Drill hole adjacent to, but not over, skull fracture or in the area located by CT scan.
- In the absence of CT scan, place a burr hole on the side of the dilated pupil, 2 finger widths anterior to tragus of ear and 3 finger widths above.
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