Immediate postoperative seizures: incidence and computed tomographic findings

Area of Science:

• Neurosurgery
• Neurology
• Critical Care Medicine

Background:

• Postoperative seizures following intracranial surgery are a significant concern.
• Understanding the incidence and risk factors is crucial for patient management.

Purpose of the Study:

• To determine the incidence of early postoperative seizures after craniotomy.
• To identify factors associated with these seizures, including preoperative conditions and postoperative complications.

Main Methods:

• Retrospective review of 493 intracranial operations involving craniotomy.
• Analysis of patient data, including seizure history, lesion site, anticonvulsant levels, and postoperative imaging (CT scans).

Main Results:

• The overall incidence of early postoperative seizures was 8.9%.
• Seizure incidence was higher for brain tumor operations (13.5%) than aneurysmal operations (3.8%).
• Preoperative seizures, lesion site, sub-therapeutic anticonvulsant levels, and postoperative complications (hemorrhage, edema, infarction) were significant risk factors (p < 0.005).

Conclusions:

• Early postoperative seizures are a notable complication of craniotomy.
• Identifying and managing risk factors, particularly postoperative complications, may help reduce seizure incidence.