🧠 Physician use only. Guidelines reflect AHA/ASA 2026, WHO 2025, EAN/PNS 2023, and current neurocritical care evidence. Time-critical emergencies: activate stroke team / neurology immediately.  ·  Evidence: A = RCT/meta-analysis · B = cohort/expert consensus  ·  COR: Class I = recommended · IIa = reasonable · IIb = may be considered