Abstract TMP105: High Utilization Of CAS Procedures Among The Elderly In The Post Crest Era
Background: An important interaction of age with outcome was revealed in Carotid Revascularization Endarterectomy Versus Stenting Trial (CREST) where elderly patients ≥70 years had worse outcomes with Carotid stenting (CAS) than with Endarterectomy (CEA). Our hypothesis was that following the CREST study, the proportion of CAS procedures in the elderly would decrease.
Methods: We performed a retrospective review of carotid revascularization procedures between June 2009 and April 2012 at a large volume urban medical center. Demographics, indications, surgical high-risk criteria and outcomes of in-hospital stroke/death/MI were collected. Data analysis was performed in subjects over 70 years. Time trends were examined in the post-CREST period.
Results: A total of 701 procedures (CEA 36%, CAS 64%) were performed during the study period, of which 360 (51.4%) were in patients ≥70 years (CEA 33%, CAS 67%). A significant proportion (22.1%) was in those ≥80 years. The choice of procedure did not change following CREST. The majority of CAS procedures in elderly (90.8%) were performed by cardiologists. Asymptomatic patients (47.3%) and patients with non-specific symptoms (18.7%) comprised a large proportion of this subgroup. A third of elderly patients with asymptomatic and nonspecific symptoms did not have any surgical high-risk criterion. The proportion of elderly patients receiving CAS for non-specific symptoms increased progressively over time post CREST (27.9% in the most recent months). A similar rise in non-specific indications was noted in the subgroup of patient ≥80 years receiving CAS. About half of this subgroup did not have any surgical high-risk criterion.
Conclusion: Two years after CREST results, CAS continues to be performed among the elderly, often for non-specific symptoms or in asymptomatic patients. The lack of a decrease in CAS procedures in the elderly raises questions about whether evidence-based carotid revascularization occurs in the real world.
- © 2012 by American Heart Association, Inc.