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.