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  • Title: Cervicocerebral Atherosclerosis Burden Increases Long-Term Mortality in Patients With Ischemic Stroke or Transient Ischemic Attack.
    Author: Lainelehto K, Pienimäki JP, Savilahti S, Huhtala H, Numminen H, Putaala J.
    Journal: J Am Heart Assoc; 2024 Jul 02; 13(13):e032938. PubMed ID: 38842273.
    Abstract:
    BACKGROUND: The influence of burden of atherosclerosis in the brain supplying arteries on mortality in patients with acute ischemic stroke or transient ischemic attack is poorly known. We assessed whether total burden of atherosclerosis within cervicocerebral arteries is associated with long-term mortality. METHODS AND RESULTS: A total of 406 patients (median age, 71.8 years; 57.9% male) with acute ischemic stroke or transient ischemic attack were included and their cervicocerebral arteries imaged with computed tomography angiography. The presence of atherosclerotic findings was scored for 25 artery segments and points were summed as a Cervicocerebral Atherosclerosis Burden (CAB) score, analyzed as quartiles. Data on all-cause mortality came from Statistics Finland. After a median follow-up of 7.3 years, 147 (33.5%) patients had died. Compared with surviving patients, those who died had a higher median CAB score (5, interquartile range 2-10 versus 11, 7-16; P<0.001). Cumulative mortality increased from 8.9% (95% CI, 7.0-10.8) in the lowest to 61.4% (95% CI, 55.4-67.4) in the highest quartile of CAB score. Adjusted for demographics, cardiovascular risk factors, secondary preventive medication, and admission National Institute of Health Stroke Scale score, every CAB score point increased probability of death by 3%. Analyzed in quartiles, the highest CAB quartile was associated with a 2.5-fold likelihood of all-cause mortality. CONCLUSIONS: The main findings of our study were the increasing mortality with the total burden of computed tomography angiography-defined atherosclerosis in the brain supplying arteries after ischemic stroke or transient ischemic attack and that the CAB score-integrating this pathology-independently increased all-cause mortality.
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