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| Seizures after head trauma |
| Severity |
Definition |
Seizure risk |
| 1 yr |
5 yr |
| Mild |
LOC or amnesia < 30 minutes |
0.1% |
0.6% |
| Moderate |
LOC for 30 min to 24 hr or a skull fracture |
0.7% |
1.6% |
| Severe |
LOC or amnesia > 24 hr, subdural hematoma or brain
contusion |
7.1% |
11.5% |
| Other risk factors |
Increased risk of seizure: intracranial
hematoma, focal neurologic deficits, depressed skull fracture, age less than 5 years, or
older than 65, penetrating head injury. |
| |
Seizure risk in other conditions |
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