Angiographic studies
The angiographic studies characteristics of coronary and BCA are shown in Table II. In a statistical study, a significant intergroup difference in coronary and carotid artery lesions was obtained. This fact is explained by the fact that patients were divided into groups primarily according to the lesion angiographic picture. Depending on this, the surgical treatment tactics and scope were determined.
The primary endpoints were death from all causes, ACVA, TIA(transient ischemic attack), acute MI, as well as a combined endpoint including death from all causes, acute MI, ACVA and TIA. The assessment was carried out at the hospital stage and in the long-term postoperative period.
Quantitative traits comparison in the groups was carried out using the Mann–Whitney and Kraskell-Wallis criteria. Pearson’s chi-squared test was used to evaluate qualitative features. The research results were processed using the Statistica for Windows 13 application software package (Statsoftlnc., USA). The survival function was calculated using the Kaplan-Mayer method. The results are presented in the form Kaplan-Meyer curves graphs indicating the logrank test significance level to determine the difference in the studied groups. The risk period for the event occurrence was determined in months for each patient. Each period between the inclusion moment in the study and the event occurrence or the end of the study represented a separate observation.