Ten-year long-term outcomes of conventional and eversion carotid endarterectomy. Multicenter study

Aim. To analyze the immediate and long-term outcomes of eversion and conventional carotid endarterectomy (CE) with patch angioplasty.Material and methods. For the period from February 1, 2006 to September 1, 2021, the present retrospective multicenter open comparative study included 25106 patients who underwent CE. Depending on the technique of operation, the following groups were formed: group 1 (n=18362) — eversion CE; group 2 (n=6744) — conventional CE with patch angioplasty. The long-term follow-up period was 124,7±53,8 months.Results. In the hospital postoperative period, the groups were comparable in incidence of all complications: lethal outcome (group 1: 0,19%, n=36; group 2: 0,17%, n=12; p=0,89; odds ratio (OR) =1,1; 95% confidence interval (CI) =0,57- 2,11); myocardial infarction (MI) (group 1: 0,15%, n=28; group 2: 0,13%, n=9; p=0,87; OR=1,14; 95% CI=0,53-2,42); stroke (group 1: 0,33%, n=62; group 2: 0,4%, n=27; p=0,53; OR=0,84; 95% CI=0,53-1,32); bleeding with hematoma formation (group 1: 0,39%, n=73; group 2: 0,41%, n=28; p=0,93; OR=0,95; 95% CI=0,61-1,48); internal carotid artery (ICA) thrombosis (group 1: 0,05%, n=11; group 2: 0,07%, n=5, p=0,9; OR=0,8; 95% CI=0,28-2,32). In the long-term follow-up, the groups were comparable only in MI incidence: group 1: 0,56%, n=103; group 2: 0,66%, n=45; p=0,37; OR=0,84; 95% CI=0,59-1,19. All other complications were more frequent after conventional CE with patch angioplasty: all-cause death (group 1: 2,7%, n=492; group 2: 9,1%, n=616; p<0,0001; OR=0,27; 95% CI=0,24-0,3); lethal ischemic stroke (group 1: 1,0%, n=180; group 2: 5,5%, n=371; p<0,0001; OR=0,17; 95% CI=0,14-0,21); non-lethal ischemic stroke (group 1: 0,62%, n=114; group 2: 7,0%, n=472; p<0,0001; OR=0,08; 95% CI=0,06-0,1); ICA restenosis >60%, requiring re-revascularization (group 1: 1,6%, n=296; group 2: 12,6%, n=851; p<0,0001; OR=0,11; 95% CI=0,09-0,12). Thus, the composite endpoint (lethal ischemic stroke + non-lethal ischemic stroke + MI) after conventional CE with patch angioplasty was more than 6 times higher than this parameter of eversion CE: group 1: 2,2%, n=397; group 2: 13,2%, n=888; p<0,0001; OR=0,14; 95% CI=0,12-1,16.Conclusion. Conventional CE with patch angioplasty is not prefer for cerebral revascularization in the presence of hemodynamically significant ICA stenosis due to the high prevalence of deaths, stroke, and ICA restenosis in the long-term follow-up

CarotidSCORE.RU — risk stratification for complications after carotid endarterectomy

Aim. To demonstrate the first Russian computer program (carotidscore.ru) for risk stratification of postoperative complications of carotid endarterectomy (CE).Material and methods. The present study is based on the analysis of a multicenter Russian database including 25812 patients after CE operated on from January 1, 2010 to April 1, 2022. The following types of CE were implemented: conventional CE with patch angioplasty — 6814 patients; eversion CE — 18998 patients. Following postoperative complications were assessed during the study: death, stroke, myocardial infarction (MI), composite endpoint (death + stroke + MI).Results. During inhospital postoperative period, 0,18% of participants died, while 0,14% had MI, 0,35% — stroke. The composite endpoint was recorded in 0,68%. For each factor present in patients, a predictive coefficient was estimated. The predictive coefficient was considered as a numerical parameter reflecting the strength of the effect of each factor on the development of postoperative complications. Based on this equation, predictive coefficients were calculated for each factor present in patients in our study. The total contribution of these factors was reflected as a percentage and denoted the risk of postoperative complications with a minimum of 0% and a maximum of 100%. On the basis of obtained calculations, a CarotidSCORE program was created. Its graphical interface is based on the QT framework. It is possible not only to estimate the risk of a complication, but also to save all data about a patient in JSON format. The CarotidSCORE program contains 47 patient parameters, including clinical, demographic, anamnestic and angiographic characteristics. It makes it possible to choose one of the four CE types, which will provide an accurate stratification of the complication risk for each of them.Conclusion. CarotidSCORE (carotidscore.ru) may determine the probability of postoperative complications in patients undergoing CE

DEVELOPING A REGISTER OF OUTCOMES OF CHRONIC CORONARY HEART DISEASE: CHD PROGNOSIS STUDY

Aim. Using the data from the CHD PROGNOSIS register, to assess the long-term survival of patients with stable coronary heart disease (CHD) confirmed by a diagnostic coronary angiography (CAG).Material and methods. The study design (retro- and prospective observational cohort study) agreed with the register principles. The study included all consecutive patients (Moscow Region residents) who were hospitalised to the State Research Centre for Preventive Medicine with a preliminary diagnosis of CHD, for a diagnostic CAG and therapeutic strategy selection (01.01.2004–31.12.2007). The total number of participants was 641 (500 men and 141 women). Vital status was ascertained in 551 patients (86%). Mean follow-up time was 3,8 years (range 0,76–6,52 years).Results. The register participants had a high prevalence of conventional risk factors and adverse clinical and anamnestic characteristics. CAGconfirmed coronary artery (CA) stenosis ≥50% was registered in 563 patients. In 24 out of 78 individuals with “intact” CA, coronary syndrome X or vasospastic angina was diagnosed; in the other 54, CHD diagnosis could not be confirmed. During the hospitalisation, balloon angioplasty was performed in 38% of the patients with known vital status. Before hospitalisation, the main drug classes with proven prognostic benefits were administered insufficiently often. During the follow-up period (mean follow-up 3,9 years), 50 patients died. All-cause mortality was 11,38±1,61 per 1000 person-years. The leading cause of death was chronic CHD (84%), which confirms high levels of cardiovascular risk in these patients. In total, fatal and non-fatal complications, including revascularisation episodes, were registered in 36%.Conclusion. The established register of stable CHD includes a typical cohort of chronic CHD patients who are referred for invasive diagnostics and treatment. Therefore, the register is expected to provide valid information on the factors determining prognosis and effectiveness of medical intervention, such as pharmacological therapy and percutaneous revascularisation

FIRST RESULTS OF CHD PROGNOSIS STUDY

Aim — to investigate the prognostic value of different risk factors associated with stable angina in a contemporary population of patients,to identify the key prognostic features, to evaluate the risk distribution and to construct a reliable tool for the risk prediction.Materials and methods. Prospective observational cohort study, conducted between January, 2004 and December, 2007 in Moscow, Russia. 641 patients were included on the basis of planned hospitalization to National Research Center for Preventive Medicine (Moscow) with a clinical diagnosis of coronary heart disease and performance of coronary angiography. 5 years follow‑up period (median time 3.9 years, min. 0.76 years, max. 6.52 years). 551 patients were followed-up by phone interview, among them: 432 men (78%, (age 57.7 ± 0.4), 119 women (age 60.3 ± 0.7), 354 of them attended follow-up visit and were secondary examined. Univariate and multivariate Cox regression model was used to identify independent predictors of events. Variables were selected in a stepwise forward manner. The probabilityof survival was calculated using the Kaplan—Meier method, and survival were compared using the long-rank test.Results. Annual death rate from all cause was 11.38 per 1000 patient-years at risk. The primary endpoint (combined all-cause mortality, nonatal MI, non-fatal stroke/TIA) was registered in 13.61% of cases, with annual rate of 17.34 per 1000 patient-years at risk. Frequency of the secondary endpoint (cardiovascular adverse events, such as CV death, non-fatal MI, non-fatal stroke/TIA, recurrent angina, endovascular revascularization, CABG) was registered in 36% of all followed‑up cases.Conclusion. This article describes the first results of PROGNOS IBS study — a comprehensive patient registry. Our data demonstrates the risk factors distribution and morbidity/mortality rates in the contemporary population of patients. A score will be developed to estimate risk probability of death and adverse cardiovascular events.</p

VALUE OF SPECIFIC PARAMETERS AND INTEGRATIVE INDICES OF TREADMILL TEST FOR THE ASSESSMENT OF CORONARY STENOSIS SEVERITY

Aim. To assess the value of specific parameters and integrated indices (II; such as Duke Index (DI), Centre for Preventive Medicine Index (CPMI), and modified CPMI) of the treadmill test in the diagnostics of coronary stenosis severity among patients with stable coronary heart disease (CHD).Material and methods. The study included all patients (260 permanent residents of Moscow City or Moscow Region) who were admitted to the State Research Centre for Preventive Medicine with the CHD diagnosis and who underwent coronary angiography (CAG) and treadmill test in the period between January 1st 2004 and December 31st 2007.Results. There were statistically significant associations between the main treadmill test parameters and the severity of coronary artery (CA) atherosclerosis. The larger number of stenosis-affected CA was associated with a higher prevalence of chest pain and treadmill tests with positive results and ST segment depression &gt;1 mm, as well as with a decreased total duration of treadmill test. Similarly, the increased risk, as assessed by treadmill test indices (DI, CPMI, and modified CPMI), was linked to an increased number of stenosis-affected CA. Modified CPMI demonstrated the highest diagnostic value for the assessment of coronary atherosclerosis severity.Conclusion. The treadmill test parameters which demonstrated their diagnostic value for the assessment of CHD severity included the following: positive test results, retrosternal chest pain as the reason for test discontinuation, ST segment depression &gt;1mm, and short total duration of the test. Overall, all II demonstrated their high value in CHD diagnostics. Modified CPMI was the most effective II in the assessment of CA atherosclerosis severity