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  • Title: Age but not sex is associated with higher risk of in-hospital stroke or death after carotid artery stenting in symptomatic and asymptomatic carotid stenosis.
    Author: Schmid S, Tsantilas P, Knappich C, Kallmayer M, Breitkreuz T, Zimmermann A, Eckstein HH, Kuehnl A.
    Journal: J Vasc Surg; 2019 Apr; 69(4):1090-1101.e3. PubMed ID: 30905363.
    Abstract:
    OBJECTIVE: The aim of this study was to analyze the correlation of age and sex with the outcome after carotid artery stenting (CAS). We used the statutory nationwide quality assurance database in Germany, in which, among others, all endovascular procedures on the extracranial carotid artery are filed. METHODS: We performed a secondary data analysis of all CAS procedures (N = 13,086) between 2012 and 2014 in Germany. The primary outcome was defined as any in-hospital stroke or death; the secondary outcomes were defined as in-hospital stroke (alone) and in-hospital death (alone). Descriptive analyses as well as multilevel multivariable analyses were applied. RESULTS: About 70% of the patients were male, and the mean age of all patients was 69.7 ± 9.3 years. Carotid stenosis was symptomatic in 36% of all patients. The primary outcome occurred in 2.4% (n = 317) of patients (2.5% of women, 2.4% in men, 1.7% of asymptomatic patients, and 3.7% of symptomatic patients). Multivariable regression analysis indicated that age (linear effect per 10-year increase) was significantly correlated with a higher risk of in-hospital stroke or death after CAS (risk ratio [RR], 1.54; 95% confidence interval [CI], 1.35-1.75). The risks of stroke alone (RR, 1.47; 95% CI, 1.26-1.72) and death alone (RR, 1.62; 95% CI, 1.01-2.58) were also significantly associated with age in CAS patients. Sex did not significantly alter the age effect and was not associated with the primary outcome rate (RR, 0.99; 95% CI, 0.78-1.26). CONCLUSIONS: Age but not sex is correlated with a higher risk of in-hospital stroke or death in asymptomatic and symptomatic patients after CAS under routine conditions. The primary outcome rate was fueled to a comparable magnitude by both components of the composite outcome.
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