The study of the characteristics and dynamics of laboratory biomarkers in patients with cardiovascular diseases (CVD) undergoing COVID-19-associated pneumonia may be of great clinical importance. The study included 116 patients who underwent COVID-19-associated pneumonia. The patients were divided into 2 groups. The first group included 49 patients without CVD, the second group - 67 patients with CVD. A blood sample was performed in all patients at the time of hospitalization and 3 months after discharge from the hospital. The parameters of general blood count, biochemistry, hemostasis, and biomarkers of inflammation were assessed - concentration of C-reactive protein (CRP), highly sensitive CRP (hs-CRP), homocysteine and IL-6. All patients initially underwent computed tomography of the chest organs. We found that ESR, WBC (leukocytes), NLR (neutrophils/lymphocytes ratio), fibrinogen, LDH (lactate dehydrogenase), LYM/CRP ratio (lymphocytes/CRP) were parameters that significantly distinguished patients in the 1st and 2nd groups. Three months after discharge from the hospital in patients of both groups the increased indicators approached the reference values, however, some parameters such as CRP, ESR, WBC, fibrinogen remained at a higher level in group 2 compared to group 1. Correlation analysis revealed the relationship between parameters of inflammation and hemostasis in the 2nd group of patients, which confirms the presence of latent vascular inflammatory potential in this group. It was revealed that such indicators as lymphocytes, neutrophils, APTT and LDH were associated with the initial volume of lung lesion more than 50%. Increase of these parameters by 1 unit contributes to increase in the volume of lung tissue damage by 6.5%, 6.4%, 11%, and 0.6%, respectively. Thus, dynamic control of laboratory parameters has prognostic value in assessing the nature of the course of COVID-19 associated pneumonia in patients with CVD and developing an algorithm for personalized monitoring of patients in the post-COVID period with the aim of timely correction of therapy to prevent unwanted vascular complications.
<p><strong>Aim.</strong> To examine the process of neointimal formation after bioresorbable scaffolds (BRS) implantation using optical coherence tomography (OCT) in patients with stable coronary artery disease (SCAD) and to determine relationship between neointimal healing and biochemical parameters of inflammation.<br /><strong>Methods.</strong> Patients with SCAD (n = 20) who were indicated for percutaneous coronary intervention (PCI) were enrolled. Patients were randomised into two groups as per the stent type. The treatment group comprised 10 patients who were implanted with BRS ABSORB (Abbott Laboratories, Abbott Park, USA) during PCI. The comparison group comprised 10 patients who were implanted with DES XIENCE (Abbott Laboratories, Abbott Park, USA) during PCI. All the patients underwent OCT imaging during PCI. Subsequently, 18 patients were subjected to coronary angiography with OCT imaging in 12 mon. The primary endpoint was the 12-month neointimal healing (NIH) score. Secondary endpoints were clinical outcomes (all-cause hospitalisation, myocardial infarction, probable stent thrombosis and death), OCT parameters at the 12-month follow-up and biochemical markers dynamics.<br /><strong>Results.</strong> Initial angiographic data analysis indicated a higher rate of balloon pre-dilatation (100% vs. 30%; р = 0,003) and post-dilatation (100% vs. 20% р = 0,001) in patients of the treatment group. According to OCT, the NIH score was significantly higher in the XIENCE group [0 versus 9,14 (1,63–17,55); р = 0,008] at 12 mon. There was no significant difference in the clinical outcomes between the two groups. However, the ABSORB group had an increased CD40 level after 4–5 d of PCI. In agreement with the results of correlation analysis, there was an inverse correlation between the NIH score and CD40 level at 4–5 d after PCI (r = −0,576; р = 0,016). The cut-off value of CD40 level at 4–5 d after PCI was 47,5 ng/mL for the detection of optimal neointimal healing.<br /><strong>Conclusion.</strong> In patients with SCAD, BRS demonstrated higher rate of neointimal healing than everolimus-coated stents. There was a registered inverse correlation of the NIH score with the CD40 level at 4–5 days after PCI. CD40 level > 47,5 ng/mL at 4–5 d after PCI increases the likelihood of optimal neointimal healing as per OCT data.</p><p>Received 19 February 2021. Revised 7 June 2021. Accepted 16 June 2021.</p><p><strong>Funding:</strong> The study did not have sponsorship.</p><p><strong>Conflict of interest:</strong> The authors declare no conflicts of interests.</p><p><strong>Contribution of the authors</strong><br />Conception and study design: I.S. Bessonov, N.A. Musikhina, T.I. Petelina<br />Data collection and analysis: S.S. Sapoznikov, I.S. Bessonov, N.А. Galeeva, A.O. Dyakova<br />Statistical analysis: S.S. Sapoznikov, E.A. Gorbatenko<br />Drafting the article: S.S. Sapoznikov, N.А. Galeeva, A.O. Dyakova<br />Critical revision of the article: I.S. Bessonov, S.S. Sapoznikov, E.A. Gorbatenko, N.A. Musikhina<br />Final approval of the version to be published: S.S. Sapoznikov, N.А. Galeeva, I.S. Bessonov, N.A. Musikhina, T.I. Petelina, A.O. Dyakova, E.A. Gorbatenko</p>
The presence of the intermediate stenosis (30 to 50% of arterial diameter) according to coronary angiography in patients with premature ventricular complexes often represents a complicated clinical task and requires additional confirmation of myocardial ischemia. The present clinical case demonstrates the opportunities and potential benefits of contrast-enhanced stress echocardiography with assessment of myocardial perfusion in diagnosing the hemodynamic significance of the intermediate lesion of the left anterior descending artery in patient with premature ventricular complexes.
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