Alexey V. Begachev

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BACKGROUND The aim of the study was to determine the effects of asymmetric cerebral embolic load on cognitive functions. METHODS Thirty-six open heart surgery (OH) and 26 coronary artery bypass grafting (CABG) patients were evaluated by neuropsychological and transcranial Doppler tests. RESULTS OH was associated with a significantly larger microembolic(More)
Cardiac surgery is commonly associated with brain ischemia. Few studies addressed brain electric activity changes after on-pump operations. Eyes closed EEG was performed in 22 patients (mean age: 45.2 ± 11.2) before and two weeks after valve replacement. Spouses of patients were invited to participate as controls. Generalized increase of beta power most(More)
Patients who underwent cardiac surgery and their relatives often complain on postoperative memory impairment. Most prospective neuropsychological studies also found postoperative cognitive decline early after surgery. Nevertheless, recently several reports questioned the existence of long-term brain alterations in these patient cohorts. The present review(More)
Computer EEG is commonly used in longitudinal clinical studies though physiological changes of electrical brain activity during repeated EEG recordings are poorly known. Resting eyes-closed EEG was recorded twice in two weeks in 14 healthy subjects (13 women, aged 25-69 years). At follow-up, the significant decrease of alpha and theta-2 power, along with(More)
Background. Microemboli are a widely recognized etiological factor of cerebral complications in cardiac surgery patients. The present study was aimed to determine if size of left cardiac chambers relates to cerebral microembolic load in open heart operations. Methods. Thirty patients participated in the study. Echocardiography was performed in 2-3 days(More)
Analysis of contemporary clinical and experimental studies evidences that intraoperative microemboli considerably contribute to the development of postoperative deliria and cognitive disorders. A number of studies have shown that left temporal and occipital structures are especially vulnerable to intraoperative ischemia. It is important that neurological(More)
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