Seizures during the immediate postoperative period

Area of Science:

• Neurosurgery
• Neurology
• Clinical Medicine

Background:

• Elective craniotomy patients can experience early postoperative seizures.
• Understanding the causes of these seizures is crucial for patient management.

Purpose of the Study:

• To investigate the incidence and potential causes of early postoperative seizures following elective craniotomy.
• To identify risk factors and associations, particularly concerning anticonvulsant prophylaxis.

Main Methods:

• Retrospective review of 538 patients undergoing elective craniotomy.
• Analysis of seizure occurrence within 24 hours post-operation.
• Correlation of seizures with lesion location, previous seizure history, anticonvulsant levels, and postoperative complications.

Main Results:

• 23 out of 538 patients (4.3%) had seizures within 24 hours post-craniotomy.
• Most seizures occurred after frontal or temporal craniotomies.
• Inadequate anticonvulsant medication levels were present in 19 of 23 patients with seizures.
• No significant intracerebral or extracerebral hematomas were found in patients evaluated by CT scan.

Conclusions:

• Early postoperative seizures after craniotomy are rarely caused by hematomas or metabolic abnormalities.
• Inadequate anticonvulsant prophylaxis is the most common association with early postoperative seizures.
• An evidence-based approach to seizure prophylaxis and management is recommended for neurosurgical patients.