Decompressive surgery for malignant middle cerebral artery syndrome

Area of Science:

• Neurosurgery
• Neurology
• Critical Care Medicine

Background:

• Malignant middle cerebral artery (MCA) infarction poses a significant threat to patient survival.
• Decompressive craniectomy is a widely adopted surgical intervention for this condition.
• The role of additional procedures, such as anterior temporal resection, requires further investigation.

Purpose of the Study:

• To evaluate the efficacy and outcomes of decompressive craniectomy with dura augmentation in patients with malignant MCA infarction.
• To assess the impact of an additional anterior temporal resection on survival and functional outcomes.
• To compare outcomes based on the laterality of the infarction (dominant vs. non-dominant hemisphere).

Main Methods:

• Retrospective review of clinical and radiological data from 78 patients with malignant MCA infarction.
• Patients underwent decompressive craniectomy with dura augmentation.
• A subgroup of 26 patients also underwent anterior temporal resection.

Main Results:

• Overall 30-day mortality was 25.6%, and 6-month mortality was 30.8%.
• At 6 months, 30.8% had good outcomes, while 69.2% had poor outcomes (disability, vegetative state, or death).
• Patients undergoing additional anterior temporal lobectomy showed a significantly higher 30-day survival rate (84.6%) compared to those without (69.2%).
• No significant difference in functional outcome was observed between patients with dominant vs. non-dominant hemisphere infarctions.
• The additional anterior temporal resection did not improve functional outcomes in surviving patients.

Conclusions:

• Decompressive craniectomy is a critical intervention for malignant MCA infarction, associated with substantial mortality and morbidity.
• An adjunct anterior temporal lobectomy may improve short-term survival but does not enhance long-term functional recovery.
• Further research is needed to optimize surgical strategies for malignant MCA infarction.