[Prophylactic external decompression for massive cerebral infarction]

Area of Science:

• Neurosurgery
• Neurology
• Radiology

Context:

• Severe cerebral edema following large cerebral infarcts can necessitate surgical intervention.
• Traditional timing for external decompression is upon signs of tentorial herniation, but outcomes have been poor.
• Early identification of imminent brain herniation is critical for improving patient prognosis.

Purpose:

• To investigate the efficacy of prophylactic external decompression in acute massive cerebral infarction.
• To identify early radiological indicators of impending tentorial herniation on CT scans.
• To evaluate surgical outcomes when decompression is performed before overt herniation signs.

Summary:

• Analysis of serial CT scans revealed a pre-edema phase in massive cerebral infarction characterized by uniform low density in the middle cerebral artery territory, mild ventricle compression, and sulcal effacement.
• External decompression was performed on three patients during this early CT finding window, prior to clinical signs of tentorial herniation.
• All three patients experienced satisfactory outcomes, suggesting this prophylactic approach may be beneficial.

Impact:

• This study suggests a potential window for intervention in acute massive cerebral infarction.
• Proactive external decompression based on specific CT findings may improve patient outcomes.
• Further research is warranted to validate this early surgical approach in larger cohorts.