Levetiracetam in Subdural Hemorrhage Management
Indications for Levetiracetam
- Primary anticonvulsant prophylaxis is generally not recommended in patients with subdural hemorrhage, but levetiracetam may be considered in patients with specific risk factors, such as past history of epilepsy, age over 65 years, or initial loss of consciousness or amnesia for more than 24 hours, according to the American Academy of Neurology 1
- Levetiracetam is indicated for patients who have already experienced a seizure following subdural hemorrhage, and it should be continued until local control of the hemorrhage has been achieved 2, 3
Advantages of Levetiracetam
- Levetiracetam has no significant drug interactions with steroids or other medications commonly used in neurocritical care, and it does not require serum level monitoring unlike phenytoin, as recommended by the American College of Clinical Pharmacy 2, 3
Monitoring and Duration of Therapy
- No routine serum level monitoring is required for levetiracetam, but patients should be monitored for psychiatric side effects, which can occur in some patients, according to the American Psychiatric Association 2, 3
- For subdural hemorrhage patients who have had seizures, levetiracetam therapy should be continued until local control has been achieved, as recommended by the American Academy of Neurology 3
Special Considerations
- Patients with impaired or fluctuating level of consciousness disproportionate to their degree of brain injury should be evaluated with continuous EEG for at least 24 hours to detect possible subclinical seizures, according to the American Heart Association 4, 5
- Levetiracetam is preferred over enzyme-inducing anticonvulsants, such as phenytoin, carbamazepine, and phenobarbital, which should be avoided in patients with brain hemorrhage, as recommended by the American College of Clinical Pharmacy 2, 3
Prophylactic Antiepileptic Drugs in Subdural Hematoma
Evidence-Based Recommendations
- The American Heart Association recommends that routine prophylactic antiepileptic drugs (AEDs) are not used for patients with subdural hematoma (SDH) who have not had seizures 6
- Short-term prophylactic AEDs may be considered only in the immediate post-hemorrhagic period (first 7 days) in high-risk patients, such as those with cortical involvement of the hematoma or middle cerebral artery territory involvement 7, 8
- Clinical seizures or electrographic seizures in patients with altered mental status should be treated with AEDs, according to the American Heart Association 6
Medication Selection and Monitoring
- Levetiracetam is preferred over older AEDs due to its better tolerability profile, but the evidence for this is not provided in the cited references 6, 7, 8
- Phenytoin should be avoided as it is associated with worse cognitive outcomes and a higher risk of adverse drug effects, with 23% of patients reporting adverse effects 7, 8