Impact of Diabetes Mellitus on Outcome of Patients Undergoing Carotid Artery Stenting: Insights From a Single Center Registry

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Abstract

Objective:

To evaluate the impact of diabetic status on outcome of patients undergoing carotid artery stenting (CAS).

Background:

Diabetes has been demonstrated to be a strong predictor of adverse outcome in patients undergoing coronary revascularization. Its significance in predicting outcome of patients undergoing carotid interventions has not been ascertained.

Methods:

We evaluated the short-term outcomes of 833 patients who underwent CAS at our institution. The primary outcome of this analysis was 30 day incidence of stroke, myocardial infarction, and death.

Results:

Diabetes was present in 311 patients. Baseline characteristics were comparable between diabetics and nondiabetics except for the diabetics having a lower left ventricular ejection fraction, lower hemoglobin, and a higher body mass index at baseline. Further, they were more likely to have congestive heart failure and coronary artery disease. There was no difference in the incidence of stroke (1.9% versus 2.7%,), myocardial infarction (MI) (2.6% versus 1.9%), death (3.9% versus 2.5%), or the composite of death stroke or MI (6.8% versus 5.9%) at 30 days between diabetics and nondiabetics. Similar results were seen when the analysis was restricted to patients treated with an emboli protection device. Diabetes was not a risk factor for adverse outcome after CAS after multivariate adjustment.

Conclusion:

Diabetics undergoing CAS are more likely to have associated co-morbidities. However despite this handicap, their short term outcome after CAS is similar to that of nondiabetics.

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