Abstract 3407: Do Patients With Carotid Artery Stenosis Have a Higher Risk of Stroke After Coronary Artery Bypass Grafting?
Background: The risk of stroke development is a concern in patients undergoing coronary artery bypass grafting (CABG) with concomitant carotid disease. Whether or not performing carotid revascularization prior to CABG reduces this risk is unclear.
Methods: A retrospective analysis of 11,499 patients who underwent CABG from 2003 to present was performed. Significant carotid stenosis was defined as >79% on carotid duplex. Patients without significant carotid stenosis (−CD) were compared to those with significant disease (+CD) to assess the rate of stroke during surgical hospitalization.
Results: There were no major differences in baseline characteristics in the study groups. Patients with carotid disease were older and more likely to have a history of hypertension and hyperlipidemia. (Table⇓) Despite these differences, the risk of post-operative stroke was similar in both groups (−CD 2.4%, +CD 3.8%, p=0.266).
Conclusion: Carotid atherosclerosis alone is not a risk factor for stroke in patients undergoing CABG. The decision to perform carotid revascularization should be independent of surgical evaluation for CABG.