Simultaneous Cardiac Surgery and Micronet-covered Stent Carotid Revascularization in High Perioperative Stroke Risk Patients

Inclusion Criteria: * Patients eligible for concomitant carotid artery stenting in conjunction with cardiac surgery based on Heart Team and NeuroVascular Team reccomendation and according to local standards of practice. * Signed informed consent form * Consent to (routinely performed in this group of patients) follow-up visits and tests performed (routinely) during long-term follow-up * De novo atherosclerotic lesions or neo-atherosclerosis. * Symptomatic patients (with a history of ipsilateral transient cerebral ischemia, stroke or amaurosis fugax within the past 6 months) with carotid artery stenosis ≥50% as assessed by NASCET angiography or * Asymptomatic patients with carotid artery stenosis ≥70-80% as assessed by angiography (NASCET method). * Coronary angiography-confirmed multivessel disease or left main stem stenosis with the symptoms of unstable angina or non-ST-segment elevation myocardial infarction. * Severe symptomatic valvular disease detected by echocardiography. Exclusion Criteria: * Expected survival time \<1 year (e.g., cancer). * Renal failure with GFR \< 20 ml/min/1.73 m2 as calculated by the CKD-EPI formula * Women who are pregnant (pregnancy test). * Coagulopathies. * History of hypersensitivity to a contrast agent that does not respond to pharmacotherapy. * Total carotid artery occlusion. * Stent in the carotid artery that protrudes into the aortic arch. * Anatomic variants that preclude stent implantation. * Significant stenosis of the common carotid artery proximal to the target lesion. * Mobile atherosclerotic plaques in the aortic arch. * Anatomy of the coronary arteries unsuitable for bypass grafting. * Lack of available vascular material for grafting. * Porcelain aorta.