Survival and prognostic factors in patients after carotid stenting and coronary revascularization

Abstract

Aim: To analyze the prognostic factors and create a model for survival in patients after interventional carotid revascularization. Methods: In 329 patients after carotid artery stenting (CAS), the median (MS) and overall survival (OS) were calculated for a follow-up period of 2-101 months. All patients underwent coronary angiography prior to carotid stenting and, if indicated, coronary revascularization. 4 groups of factors were analyzed: carotid disease, coronary artery disease (CAD), underlying cardiac pathology and concomitant diseases. Results: MS in all patients was 86 months, OS at 1, 3, 5, and 9 years was – 94%, 85%, 73%, and 51% respectively. Event free survival was 85 months. Log Rank- Mantel-Cox analysis demonstrated significantly reduced MS in 21 tested factors, most of them related to CAD. Two-step multifactorial Cox regression analysis defined only 7 of them as independent prognostic factors for the survival of patients after CAS: left main stenosis, complete revascularization, late myocardial infarction (MI), stroke, age over 70 years, valvular disease and carotid score. Conclusion: Survival of patients after CAS is limited mainly by CAD and underlying cardiac pathology. Staged revascularization treatment strategy may improve the prognosis and survival of patients with both carotid and coronary disease.

Keywords

• CAS
• survival
• prognostic factors