Extradural hemorrhage | 合法醫療器材資訊網

Extraduralhematoma(EDH),alsoknownasanepiduralhematoma,isacollectionofbloodthatformsbetweentheinnersurfaceoftheskullandouterlayerof ...

Extradural hematoma (EDH), also known as an epidural hematoma, is a collection of blood that forms between the inner surface of the skull and outer layer of the dura[1], which is called the endosteal layer. They are usually associated with a history of head trauma and frequently associated skull fracture. The source of bleeding is usually arterial, most commonly from a torn middle meningeal artery[2].

Extradural hematomas are typically biconvex in shape and can cause a mass effect with herniation. They are usually limited by cranial sutures, but not by venous sinuses. Both CT and MRI are suitable to evaluate extradural hematomas. When the blood clot is evacuated promptly (or sufficiently small to be treated conservatively), the prognosis of extradural hematomas is generally good.

Intracranial venous extradural hemorrhages[3] and spinal epidural hemorrhages[4] are di...