Which hematoma after a skull fracture presents with spinal fluid rhinorrhea and an initial unconsciousness followed by a lucid interval and later deterioration?

Which hematoma after a skull fracture presents with spinal fluid rhinorrhea and an initial unconsciousness followed by a lucid interval and later deterioration?

• A. Subarachnoid
• B. Epidural
• C. Subdural
• D. Intracerebral

Answer: (B)

A lucid interval after a head injury points to an epidural hematoma. This type of bleed is usually arterial, most often from the middle meningeal artery that can be torn when the temporal bone is fractured. The injury causes an initial loss of consciousness, then the patient may regain consciousness and seem largely fine for a while (a lucid interval) as bleeding begins to accumulate more slowly at first. As the hematoma expands under the dura, intracranial pressure rises and the patient deteriorates rapidly, sometimes within minutes to hours. The presence of spinal fluid rhinorrhea indicates a skull base fracture with a CSF leak, which can accompany severe head trauma, but it does not change the characteristic evolution of an epidural hematoma—the lucid interval followed by rapid decline remains the defining pattern. In contrast, subdural hematomas typically present with a slower, more gradual onset due to venous bleeding, subarachnoid hemorrhages present with sudden severe headache and blood in the CSF, and intracerebral hematomas are intraparenchymal. The key feature here is the lucid interval signaling an expanding epidural hematoma that requires urgent surgical evacuation.

A lucid interval after a head injury points to an epidural hematoma. This type of bleed is usually arterial, most often from the middle meningeal artery that can be torn when the temporal bone is fractured. The injury causes an initial loss of consciousness, then the patient may regain consciousness and seem largely fine for a while (a lucid interval) as bleeding begins to accumulate more slowly at first. As the hematoma expands under the dura, intracranial pressure rises and the patient deteriorates rapidly, sometimes within minutes to hours.

The presence of spinal fluid rhinorrhea indicates a skull base fracture with a CSF leak, which can accompany severe head trauma, but it does not change the characteristic evolution of an epidural hematoma—the lucid interval followed by rapid decline remains the defining pattern. In contrast, subdural hematomas typically present with a slower, more gradual onset due to venous bleeding, subarachnoid hemorrhages present with sudden severe headache and blood in the CSF, and intracerebral hematomas are intraparenchymal. The key feature here is the lucid interval signaling an expanding epidural hematoma that requires urgent surgical evacuation.