The Impact of Time-to-Intervention on Mortality and Functional Outcome in Acute Subdural Hematoma: A Systematic Review and Meta-Analysis.

While historical paradigms emphasize a 4h period for subdural hematoma evacuation, our meta-analysis indicates that a straightforward linear relationship between time to intervention and improved survival or functional outcome is absent in contemporary clinical studies.

Surgical timing thresholds must be interpreted cautiously, as the decision-making process is heavily guided by clinical triage bias, where rapidly deteriorating patients are prioritized for urgent decompression.