Which type of hematoma is arterial bleed located between skull and dura?

Which type of hematoma is arterial bleed located between skull and dura?

• A. Subdural Hematoma
• B. Intracranial Pressure
• C. Status Epilepticus
• D. Epidural Hematoma

Answer: (D)

An epidural hematoma is an arterial bleed between the skull and the dura mater. It most often follows a head injury that fractures the temporal bone and tears a meningeal artery, usually the middle meningeal artery. Because arterial blood is high pressure, the hematoma can expand quickly and raise intracranial pressure, rapidly threatening brain tissue. A classic scenario is a brief loss of consciousness at impact, a period of apparent recovery (lucid interval), then a rapid decline as the bleed enlarges. On CT imaging, it appears as a lens-shaped (biconvex) collection that tends to stay separate from the brain and does not cross sutures. This contrasts with subdural hematoma, which is a venous bleed between dura and arachnoid and typically has a crescent-shaped appearance and slower onset. The other two options do not describe a hematoma at all.

An epidural hematoma is an arterial bleed between the skull and the dura mater. It most often follows a head injury that fractures the temporal bone and tears a meningeal artery, usually the middle meningeal artery. Because arterial blood is high pressure, the hematoma can expand quickly and raise intracranial pressure, rapidly threatening brain tissue. A classic scenario is a brief loss of consciousness at impact, a period of apparent recovery (lucid interval), then a rapid decline as the bleed enlarges. On CT imaging, it appears as a lens-shaped (biconvex) collection that tends to stay separate from the brain and does not cross sutures. This contrasts with subdural hematoma, which is a venous bleed between dura and arachnoid and typically has a crescent-shaped appearance and slower onset. The other two options do not describe a hematoma at all.