Factors that Can Help Select the Timing for Decompressive Hemicraniectomy for Malignant MCA Stroke

Area of Science:

• Neurology
• Neurosurgery
• Radiology

Background:

• Malignant middle cerebral artery (MMCA) stroke poses a critical challenge in determining the optimal timing for decompressive hemicraniectomy (DHC).
• Accurate assessment of infarct evolution is vital for timely surgical intervention.

Purpose of the Study:

• To identify factors influencing the timing of DHC in MMCA stroke patients.
• To stratify these factors based on time intervals to DHC.

Main Methods:

• Retrospective, multicenter cross-sectional study of 182 patients referred for DHC.
• Analysis of infarct volume and infarct growth rate (IGR) on CT scans.
• Multivariate adjustment to identify independent predictors for DHC.

Main Results:

• Younger age (<55 years), septum pellucidum deviation, temporal lobe involvement, additional MCA infarcts, and IGR on the second CT scan were independently associated with DHC.
• Higher IGRs were observed across all time strata (<48, 48-72, >72 hours).
• Patients surviving without surgery exhibited slower IGRs; infarct volume was not associated with time to DHC.

Conclusions:

• Key risk factors for DHC in MMCA stroke patients were identified and stratified by time.
• Evaluating IGR between serial CT scans aids in selecting the appropriate timing for hemicraniectomy.