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Asymptomatic Coronary Artery Disease in Japanese Patients With the Acute Ischemic Stroke.
Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association 2018 November 22
OBJECTIVE: To investigate the prevalence and outcomes of asymptomatic coronary artery disease (CAD) in patients with the first episode of ischemic stroke.
METHODS: Patients admitted to our hospital between November 2001 and January 2009 for the episode of an acute ischemic stroke/transient ischemic attack were included. Stress-Tl-201 scintigraphy was performed and followed by coronary angiography (CAG). The prevalence and risks for asymptomatic CAD, and long-term outcomes were studied.
RESULTS: Of 1309 patients, only 15 (1.1%) patients presented with a history of CAD. Excluding 406 patients because of severity, systemic infection, early transfer to another hospital, or a refusal to participate, myocardial scintigraphy was performed in 903 patients (mean age, 72 ± 10 years, male 63.9%), and myocardial ischemia was diagnosed in 214 patients (23.7%). Of these patients, 76 patients underwent CAG, and showed significant stenosis (>75%) of a coronary artery in 61 (80.3%) patients. The risk factors for positive scintigraphy findings and CAG were high-grade premature complexes via Holter monitoring (P < .0001), enlarged left ventricle (P = .0051) and wall motion abnormalities (P = .0014) observed on echocardiography, and carotid artery stenosis observed in magnetic resonance angiography imaging (P < .0001). During the follow-up periods of 83 ± 47 months and of 91 ± 47 months, 17.2% of scintigraphy-positive and 2.8% of scintigraphy-negative patients developed episodes of myocardial ischemia, respectively (P < .001).
CONCLUSIONS: Symptomatic CAD was rare in Japanese patients with the first episode of ischemic stroke, but asymptomatic CAD was identified by stress Tl-201 myocardial scintigraphy in one-quarter of the patients. Positive scintigraphy was associated with asymptomatic CAD and future cardiac events.
METHODS: Patients admitted to our hospital between November 2001 and January 2009 for the episode of an acute ischemic stroke/transient ischemic attack were included. Stress-Tl-201 scintigraphy was performed and followed by coronary angiography (CAG). The prevalence and risks for asymptomatic CAD, and long-term outcomes were studied.
RESULTS: Of 1309 patients, only 15 (1.1%) patients presented with a history of CAD. Excluding 406 patients because of severity, systemic infection, early transfer to another hospital, or a refusal to participate, myocardial scintigraphy was performed in 903 patients (mean age, 72 ± 10 years, male 63.9%), and myocardial ischemia was diagnosed in 214 patients (23.7%). Of these patients, 76 patients underwent CAG, and showed significant stenosis (>75%) of a coronary artery in 61 (80.3%) patients. The risk factors for positive scintigraphy findings and CAG were high-grade premature complexes via Holter monitoring (P < .0001), enlarged left ventricle (P = .0051) and wall motion abnormalities (P = .0014) observed on echocardiography, and carotid artery stenosis observed in magnetic resonance angiography imaging (P < .0001). During the follow-up periods of 83 ± 47 months and of 91 ± 47 months, 17.2% of scintigraphy-positive and 2.8% of scintigraphy-negative patients developed episodes of myocardial ischemia, respectively (P < .001).
CONCLUSIONS: Symptomatic CAD was rare in Japanese patients with the first episode of ischemic stroke, but asymptomatic CAD was identified by stress Tl-201 myocardial scintigraphy in one-quarter of the patients. Positive scintigraphy was associated with asymptomatic CAD and future cardiac events.
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