Use of CHADS₂ and CHA₂DS₂-VASc scores to predict prognosis after stroke

Area of Science:

• Neurology
• Cardiology
• Clinical Prediction Models

Background:

• Stroke is a leading cause of neurological disability with limited prognostic scoring systems.
• Existing scores like CHADS₂ and CHA₂DS₂-VASc are validated for atrial fibrillation stroke risk but not broadly for all ischemic stroke patients.
• Accurate prediction of stroke outcomes is crucial for patient management and treatment strategies.

Purpose of the Study:

• To evaluate the predictive capability of CHADS₂ and CHA₂DS₂-VASc scores for ischemic stroke outcomes.
• To determine if these scores are useful for prognosis stratification in all ischemic stroke patients, irrespective of atrial fibrillation status.

Main Methods:

• A cohort of 973 patients admitted with acute ischemic stroke was analyzed.
• Patients were stratified into subgroups based on pre-stroke CHADS₂ and CHA₂DS₂-VASc scores.
• Outcomes assessed at 2 years included functional status, stroke recurrence, major cardiovascular events, and mortality.

Main Results:

• Both high CHADS₂ and CHA₂DS₂-VASc scores correlated with poorer functional outcomes, increased stroke recurrence, major cardiovascular events, and mortality.
• These scores demonstrated high sensitivity and negative predictive value in predicting stroke outcomes.
• The CHA₂DS₂-VASc score exhibited higher sensitivity compared to the CHADS₂ score.

Conclusions:

• CHADS₂ and CHA₂DS₂-VASc scores are valuable for predicting outcomes in ischemic stroke patients, regardless of atrial fibrillation.
• These scores can serve as effective tools for stratifying prognosis in a broader stroke patient population.
• Further research may refine the application of these scores in diverse stroke etiologies.