Traditional Risk Factors Provide Limited Insight Into Long-Term Cardiovascular Risk After Carotid Endarterectomy.

Area of Science:

• Cardiovascular Medicine
• Neurology
• Vascular Surgery

Background:

• Carotid artery disease poses significant cardiovascular and cerebrovascular risks.
• Carotid endarterectomy (CEA) is a common procedure to mitigate these risks.
• Understanding long-term outcomes post-CEA is crucial for patient management.

Purpose of the Study:

• To determine the incidence of major adverse cardiovascular events (MACE) following CEA.
• To identify long-term clinical predictors of MACE in patients with carotid artery disease.
• To assess long-term survival rates compared to the general population.

Main Methods:

• Prospective enrollment of patients from the Mayo Clinic Carotid Artery Atherosclerosis Trial (MCAT) cohort who underwent CEA.
• Definition of MACE including cardiac events, cerebrovascular accidents (CVA), and all-cause mortality.
• Multivariable and covariate analyses to identify clinical predictors of MACE and its components.

Main Results:

• MACE occurred in 62.3% of 710 patients over a median follow-up of 7.1 years.
• Age and a history of cardiac events were independently associated with MACE and all-cause mortality.
• Long-term survival in the cohort was significantly lower than in the general population.

Conclusions:

• Traditional clinical risk factors inadequately explain the high MACE incidence post-CEA.
• Novel approaches for patient profiling are necessary for improved risk assessment.
• Targeted secondary prevention strategies may enhance outcomes for patients with carotid artery disease.