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Neurology supplements are not peer-reviewed. Information contained in Neurology supplements represent the opinions of the authors and are not endorsed by nor do they reflect the views of the American Academy of Neurology, Editor-in-Chief, or Associate Editors of Neurology.

Optimizing therapy of seizures in neurosurgery

From the Department of Neurosciences, Bellaria Hospital, Bologna, Italy.

Address correspondence and reprint requests to Dr. Roberto Michelucci, Department of Neurosciences, Unit of Neurology, Bellaria Hospital, Via Altura 3, 40139 Bologna, Italy; e-mail: roberto.michelucci{at}ausl.bo.it

The use of antiepileptic drugs (AEDs) in the neurosurgical setting has a number of implications, including their possible role in the prevention of seizures after acute cerebral insults or brain tumors and the potential for toxicity and interactions when these agents are administered in association with radiotherapy or chemotherapy. This review discusses these controversial issues and draws the following conclusions. 1) AEDs should be prescribed on a short-term basis to prevent seizures occurring within the first week after a cerebral insult (trauma, neurosurgical procedure) but are ineffective to avoid true post-traumatic epilepsy or first seizures in patients with primary or secondary cerebral neoplasms. 2) The use of phenytoin and, to a lesser extent, phenobarbital and carbamazepine during cranial irradiation is associated with an increased risk for severe, potentially fatal, mucocutaneous reactions. In this context, new AEDs with a very low potential for allergic cutaneous reactions should be preferred. 3) Enzyme-inducing AEDs, such as phenytoin, phenobarbital, and carbamazepine, may increase the clearance and reduce the clinical efficacy of corticosteroids and anticancer agents that are also metabolized by the cytochrome P450 system. The newly developed AEDs that are devoid of hepatic metabolism, such as levetiracetam and gabapentin, are now recommended because of good results in preliminary studies and because they do not show interactions with anticancer agents.

This supplement has been supported through an unrestricted grant from UCB S.A., manufacturers of levetiracetam (Keppra®).

Disclosure: Dr. Michelucci has received consultancy fees from the sponsor of this supplement.

Neurology supplements are not peer-reviewed. Information contained in Neurology supplements represents the opinions of the authors and is not endorsed by nor does it reflect the views of the American Academy of Neurology, Editorial Board, Editor-in-Chief, or Associate Editors of Neurology.