BACKGROUND: Carotid artery stenting (CAS) is an alternative to carotid endarterectomy for the prevention of stroke and transient ischemic attack (TIA). The high long-term mortality among patients who underwent CAS seems to be related to the high comorbidity burden, including coronary and peripheral artery disease. However, limited data on very long-term mortality (over four years) and predictors of death are available. AIM: We sought to investigate the very long-term survival after CAS and the impact of comorbidities on mortality at follow-up. METHODS: Data of 194 symptomatic and asymptomatic patients who underwent CAS with cerebral protection systems from December 2002 to March 2014 were analyzed. All cause mortality during long-term follow-up was assessed. Univariate and multivariate Cox regression analysis was used to find independent predictors of death. RESULTS: The median age of patients was 66 [interquartile range (IQR): 60-73] years and 78.9 % of patients were male. The median follow-up was 7.6 (IQR: 4.4-10.2) years. The all-cause mortality rate after 30 days, one year, four years, and at maximum follow-up was 0 %, 5.1 %, 17.5 % and 31.4 %, respectively. Out of 61 deaths, 37 (60 %) were cardio-cerebral vascular related deaths, 15 (25 %) non-cardiovascular deaths, and 9 (15 %) due to unknown reasons. Among cardio-cerebral vascular deaths, there were 12 fatal strokes, 18 fatal myocardial infarctions and seven other cardiac related deaths. Non-cardiac deaths were due mainly to cancer (9/15). Age and diabetes mellitus were independent predictors of all-cause death during long-term follow-up. CONCLUSIONS: The mortality rate during short and long-term follow-up after CAS was lower than reported in the literature. Age and diabetes mellitus were independent predictors of all-cause death. Further research is needed to confirm the potential association between those risk factors and decreased survival. Hippokratia 2016, 20(3): 204-208.
BACKGROUND: Carotid artery stenting (CAS) is an alternative to carotid endarterectomy for the prevention of stroke and transient ischemic attack (TIA). The high long-term mortality among patients who underwent CAS seems to be related to the high comorbidity burden, including coronary and peripheral artery disease. However, limited data on very long-term mortality (over four years) and predictors of death are available. AIM: We sought to investigate the very long-term survival after CAS and the impact of comorbidities on mortality at follow-up. METHODS: Data of 194 symptomatic and asymptomatic patients who underwent CAS with cerebral protection systems from December 2002 to March 2014 were analyzed. All cause mortality during long-term follow-up was assessed. Univariate and multivariate Cox regression analysis was used to find independent predictors of death. RESULTS: The median age of patients was 66 [interquartile range (IQR): 60-73] years and 78.9 % of patients were male. The median follow-up was 7.6 (IQR: 4.4-10.2) years. The all-cause mortality rate after 30 days, one year, four years, and at maximum follow-up was 0 %, 5.1 %, 17.5 % and 31.4 %, respectively. Out of 61 deaths, 37 (60 %) were cardio-cerebral vascular related deaths, 15 (25 %) non-cardiovascular deaths, and 9 (15 %) due to unknown reasons. Among cardio-cerebral vascular deaths, there were 12 fatal strokes, 18 fatal myocardial infarctions and seven other cardiac related deaths. Non-cardiac deaths were due mainly to cancer (9/15). Age and diabetes mellitus were independent predictors of all-cause death during long-term follow-up. CONCLUSIONS: The mortality rate during short and long-term follow-up after CAS was lower than reported in the literature. Age and diabetes mellitus were independent predictors of all-cause death. Further research is needed to confirm the potential association between those risk factors and decreased survival. Hippokratia 2016, 20(3): 204-208.
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