Introduction. It is known that patients with ischemic heart diseases have endothelial dysfunction, but there is lack of research about microcirculation in these patients with diffuse liver diseases, especially diagnosed with digital capillaroscopy. Aim. To investigate hemodynamic disorders and microcirculation in patients with chronic ischemic heart disease depending on the presence of diffuse liver diseases and its severity with the digital capillaroscopy. Materials and methods. Our prospective study included 187 patients according to the criteria of inclusion. The data of echocardiography and digital capillaroscopy were analysed. Results. In our research in patients with ejection fraction less than 40% there was revealed thickening of the wall of the left ventricle, low blood supply in arterial and venous parts of capillaries. Patients with ejection fraction less than 40% and progressive diffuse liver diseases had advanced thickening of the wall of the left ventricle. Patients with liver cirrhosis had more adverse changes in hemodynamics. Patients with ischemic heart disease and diffuse liver disease had the worst capillary blood supply. Patients with ejection fraction less than 40% and diffuse liver diseases had structural changes of capillaries such as bi-, trifurcation and bushy forms. Conclusions. So, diffuse liver diseases, especially severe, cause endothelial dysfunction in patients with ischemic heart diseases. Digital capillaroscopy is a noninvasive method for microcirculation diagnosis and patients’ monitoring.
The aim: To estimate the changes in intracardiac hemodynamics, cerebral blood flow (CBF), and microembolic signals` (MES) burden in stable coronary artery disease (SCAD) patients with concomitant COVID-19. Materials and methods: The cross-sectional study analyzed the data from 80 patients, being subdivided as follows: group 1 (G1) – SCAD without COVID-19 (n=30); group 2 (G2) – SCAD with concomitant COVID-19 (n=25); group 3 (G3) – COVID-19 without SCAD (n=25). The control group (CG) included 30 relatively healthy volunteers. CBF and total MES count were assessed by transcranial Doppler ultrasound. Results: Transthoracic echocardiography data from G2 revealed the most pronounced left ventricular (LV) dilation and its contractility decline (the rise of end-systolic volume (ESV) and ejection fraction decrease), as compared to G1 and G3. G1-G3 patients (vs. CG) presented with lower peak systolic velocities in all the studied intracranial arteries (middle and posterior cerebral arteries bilaterally, and basilar artery), along with the higher MES count. Such a drop in CBF was the most pronounced in G2. Both G2 and G3 demonstrated the highest amount of MES, with slightly higher count in G2. We built a linear neural network, discriminating the pattern of both higher LV ESV and MES count, being inherent to G2. Conclusions: G2 patients demonstrated the LV dilation and its systolic function impairment, and presented with CBF drop and MES burden increase, being more advanced in contrast to G1 and G3. LV contractility decrease was associated with the higher MES load in the case of SCAD and COVID-19 constellation.
Aim. To determine the features of microcirculatory dysfunction and in patients with chronic ischemic heart disease, depending on the presence of concomitant diffuse liver disease. Materials and methods. We performed a prospective study on the basis of MC «Doctor Vera», as well as in the diagnostic department of Medbud Clinic between 2009 and 2019. A total of 187 patients were examined. Patients' blood flow was assessed by transthoracic echocardiography, wavelet analysis laser Doppler flowmetry (LDF). Results. In the analysis of indicators of microcirculatory dysfunction in patients with ischemic heart disease, statistically significant deterioration of wavelet analysis laser Doppler flowmetry was determined. In patients with ischemic heart disease and left ventricular ejection fraction < 40 %, indicators of wavelet analysis LDF were significantly lower. We also found that the severity of diffuse liver disease significantly disrupts peripheral blood flow (Р < 0.05). Conclusions. The results of intracardiac hemodynamics, microcirculatory dysfunction were first presented. In patients with isolated ischemic heart disease as the left ventricular EF decreased, a significant decrease in capillary blood flow was observed as a result of deterioration of central hemodynamics, development of atherosclerotic vascular changes, as well as an increase in their vascular tone. We have proved that in the presence of DLD in patients with ischemic heart disease and EF < 40 %, the degree of increase in peripheral resistance and impaired venous outflow were more pronounced due to the depletion of vasoactive substances production, impaired their excretion by hepatocytes due to irreversible morpho-functional changes in liver at the stage of decompensation of HF, severe fibrosis, the formation of regeneration nodes. In patients with LC, the most severe disorders of peripheral blood flow were determined according to the data of the digital capillaroscopy, which testifies to the influence of the degree of liver damage on the state of microcirculation.
ВступЗгідно з даними Всесвітньої організації охорони здоров'я, до неінфекційних захворювань ХХІ століття належать серцево-судинні (інфаркт, інсульт), хронічні респіраторні (хронічна обструктивна хвороба легень, бронхіальна астма), онкологічна патологія та цукровий діабет (ЦД) [1]. Тому на сьогодні стратегічним напрямком системи охорони здоров'я кожної країни є не лише лікування, але й рання діагностика і профілактика вищезазначених хвороб з метою збереження здоров'я населення, покращення якості життя і економічного розвитку відповідно.Мікроциркуляція відіграє провідну, але у той же час і непряму роль у функціонуванні тканин і підтримці гомеостазу за рахунок таких послідовних процесів, як wash-in (доставка субстратів для енергетичного та пластичного метаболізму); власне обмін; wash-out (виведення продуктів метаболізму). Мікроциркуляторне русло являє собою сукупність найдрібніших кровоносних судин (артеріол, пре-та посткапілярних сфінктерів, капілярів, венул), лімфатичних капілярів, що підтверджує концепцію мультимодальності судинно-паренхіматозної комунікації. Під час розвитку патологічного процесу (хвороба, стрес) відбувається вивільнення прозапальних цитокінів, що спричиняють клітинну дисфункцію, тромбоз, фіброз і ураження ендотелію відповідно [2]. Дисфункція мікроциркуляторного русла тісно пов'язана з такими патологіями, як ЦД [3], синдром обструктивного апное сну [4], периферична нейропатія, ожиріння, артеріальна гіпертензія (АГ), кардіоміопатії (ішемічна, гіпертрофічна, стрес-індукована, ідіопатична) [5], церебральний вазоспазм [6], системна склеродермія, системний червоний вовчак, хронічна тромбоемболічна легенева гіпертензія, амілоїдоз [7], паління [8], деменція, старіння [9], шизофренія [10], хвороба Шагаса, пухлинний ангіогенез [11], запальні захворювання кишечника, феномен невідновлювального кровотоку [12], інфаркт міокарда (зі збереженою і без збереженої систолічної функції) [13]. Також ураження ендотелію є складовим елементом запального про-© «Міжнародний ендокринологічний журнал» / «Международный эндокринологический журнал» / «International Journal of Endocrinology» («Mìžnarodnij endokrinologìčnij žurnal»), 2018
some machine learning algorithms for sex identification based on linear mandibular measurements derived from CT scans .
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