Long-Term Outcomes After Carotid Endarterectomy: The Experience of an Average-Volume Surgeon.

Abstract

Long-term outcome data for patients undergoing carotid endarterectomy (CEA) are lacking. As most of the published literature on CEA outcomes has been from high-volume providers, we wanted to investigate the outcomes of an average-volume cerebrovascular neurosurgeon. We reviewed a single neurosurgeon's experience with CEA focusing on long-term outcomes. Most procedures (99.0%) were performed with primary closure of the arteriotomy. We studied 192 CEAs performed between 1998 and 2017, 77% for symptomatic disease. Two patients (1%) experienced immediate postoperative stroke. During an average follow-up of 53 months (range, 0-205 months), 2 more patients (1%) experienced ipsilateral carotid circulation stroke, and 5 patients (2.6%) experienced ipsilateral transient ischemic attacks. Five patients (2.6%) experienced contralateral transient ischemic attacks, and 6 (3.1%) experienced contralateral stroke. There were also 3 cases of (1.6%) hemorrhagic stroke and 6 cases (3.1%) of vertebrobasilar circulation stroke. The rate of ipsilateral stroke-free survival was 98.4% at 5 years post-CEA, 97.9% at 10 years post-CEA, and 97.9% at 15 years post-CEA. The rate of ipsilateral restenosis-free survival was 97.9% at 5 years post-CEA, 96.8% at 10 years post-CEA, and 96.8% at 15 years post-CEA. Six patients (3.1%) experienced restenosis >70% during follow-up. Two of these patients underwent carotid artery stenting. Almost all patients (>95%) were maintained on an antiplatelet medication and statin. In the hands of an average-volume cerebrovascular neurosurgeon, CEA can provide durable protection from recurrent stroke in the ipsilateral carotid distribution that extends beyond 15 years. Thus, this procedure should be considered the gold standard against which other revascularization modalities should be evaluated.