Ultra-Early Functional Improvement After Stroke Thrombectomy - Predictors and Implications

Area of Science:

• Neuroscience
• Neurology
• Critical Care Medicine

Background:

• Neurocritical care is standard for patients post-endovascular thrombectomy (EVT) for anterior large vessel occlusion strokes.
• The study investigates the link between immediate National Institutes of Health Stroke Scale (NIHSS) improvement post-EVT and patient outcomes.
• This research explores potential implications for postprocedural care strategies.

Purpose of the Study:

• To determine the relationship between ultra-early functional improvement (UEFI) and outcomes after EVT for anterior large vessel occlusion.
• To identify predictors of UEFI following EVT.
• To explore reasons for neurological decline in patients who initially show UEFI.

Main Methods:

• Retrospective review of patients with anterior circulation large vessel occlusion undergoing EVT.
• Analysis of demographic, clinical, and imaging data.
• Definition of UEFI as NIHSS score <6 within 30 minutes of successful recanalization.

Main Results:

• UEFI was observed in 23% of 343 patients.
• Predictors of UEFI included lower pretreatment NIHSS, favorable ASPECTS, and lower admission systolic blood pressure.
• UEFI patients had higher rates of functional independence (90-day mRS 0-2: 71% vs 33%) and lower mortality (8% vs 28%) compared to non-UEFI patients.

Conclusions:

• Approximately 23% of patients with anterior large vessel occlusion stroke undergoing EVT achieve UEFI.
• Patients with UEFI show significantly better functional outcomes and lower mortality rates.
• The findings suggest a need to reevaluate intensive neurocritical care requirements for patients with UEFI post-EVT.