Prospective Study on the Incidence of Cerebrovascular Disease After Coronary Angiography

Akihiro Tokushige, Masaaki Miyata, Takeshi Sonoda, Ippei Kosedo, Daisuke Kanda, Takuro Takumi, Yuichi Kumagae, Yoshihiko Fukukura, Mitsuru Ohishi
Journal of Atherosclerosis and Thrombosis 2018 March 1, 25 (3): 224-232

AIM: Previous studies have reported a 10.2%-22% rate of silent cerebral infarction and a 0.1%-1% rate of symptomatic cerebral infarction after coronary angiography (CAG). However, the risk factors of cerebral infarction after CAG have not been fully elucidated. For this reason, we investigated the incidence and risk factors of CVD complications within 48 h after CAG using magnetic resonance imaging (MRI) (Diffusion-weighted MRI) at Kagoshima University Hospital.

METHODS: From September 2013 to April 2015, we examined the incidence and risk factors, including procedural data and patients characteristics, of cerebrovascular disease after CAG in consecutive 61 patients who underwent CAG and MRI in our hospital.

RESULTS: Silent cerebral infarction after CAG was observed in 6 cases (9.8%), and they should not show any neurological symptoms of cerebral infarction. Only prior coronary artery bypass grafting (CABG) was more frequently found in the stroke group (n=6) than that in the non-stroke group (n=55); however, no significant difference was observed (P=0.07). After adjusting for confounders, prior CABG was a significant independent risk factor for the incidence of stroke after CAG (odds ratio: 11.7, 95% confidence interval: 1.14-129.8, P=0.04).

CONCLUSIONS: We suggested that the incidence of cerebral infarction after CAG was not related to the catheterization procedure per se but may be caused by atherosclerosis with CABG.

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