A validated risk score to predict outcomes after carotid stenting

Area of Science:

• Cardiovascular Medicine
• Interventional Cardiology
• Clinical Risk Stratification

Background:

• Periprocedural outcomes after carotid artery stenting are well-studied.
• Long-term mortality risk factors following carotid artery stenting require comprehensive assessment.
• Need for a validated clinical risk score for long-term mortality post-stenting.

Purpose of the Study:

• To establish and validate a clinical risk score for predicting long-term mortality in patients who have undergone carotid artery stenting.

Main Methods:

• Prospective investigation of two independent cohorts (602 and 552 patients) after successful carotid artery stenting.
• Utilized multivariable Cox regression and bootstrap variable selection to identify robust risk factors.
• Developed and validated a weighted multimarker risk score and a simplified risk score.

Main Results:

• Identified key risk factors: age, heart failure, diabetes mellitus, low lymphocyte count, prolonged prothrombin time, peripheral artery disease, and contralateral carotid occlusion.
• The multimarker risk score demonstrated strong predictive accuracy (AUC 0.79 in derivation, 0.69 in validation).
• A simplified score effectively stratified patients into distinct risk categories for all-cause mortality.

Conclusions:

• A novel multimarker risk score significantly improves the prediction of long-term mortality after carotid artery stenting.
• This score offers superior prognostic value compared to individual risk factors.
• The developed risk score is a valuable tool for clinical decision-making and patient management.