Antithrombotic Therapy in Atrial Fibrillation: Recent Approaches and Near Perspectives

Platelet function testing is widely used to diagnose disorders of the cellular link of hemostasis. The study of platelet aggregation activity is relevant for the prevention of thromboembolic complications in atrial fibrillation and monitoring the effectiveness and safety of therapy. In this study, a comparative analysis of spontaneous and stimulated platelet aggregation in groups of patients with two types of atrial fibrillation was performed - paroxysmal and persistent. The effect of β-adrenoblocker therapy on platelet aggregation activity in patients with atrial fibrillation was also studied. Platelet aggregation activity was studied using the method of G. Born in the modification of Z.A. Gabbasov on a two-channel laser analyzer “Biola”. Collagen at a concentration of 2 mg / ml and adrenaline in a concentration range of 2.5-10 μg / ml were used as aggregation-promoting agents. It has been established that spontaneous aggregation potential and collagen-induced platelet aggregation depend on the type of atrial fibrillation, as well as on the presence or absence of β-blockers in therapy. The response of platelets to stimulation with adrenaline depends, first of all, on the type of atrial fibrillation and the concentration of adrenaline in the reaction medium. The most significant changes were noted in the group of patients with a paroxysmal form atrial fibrillation, taking β-blockers in therapy.

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Research of spontaneous and stimulated functional activity of platelets in patients with different types of atrial fibrillation

Ogurkova

Суслова

Баталов

2021

Klin. lab. diagn.

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Prediction of Thromboembolism in Patients With Long-Lasting Atrial Fibrillation

Kurbanov

Zakirov

Irisov

et al. 2014

Evrazijskij kardiologičeskij žurnal

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The aim of the study. Comparative analysis of the risk assessment of thromboembolism by CHADS2 and CHA2DS2-VASc scores, and to study the preventive effectiveness of different antithrombotic agents in patients with long-lasting аtrial fibrillation (AF) at 1 year follow-up. Materials and methods. The study included 108 patients aged 38 to 78 years old (mean age 62,6±8,4 years) with persistent or permanent AF. In 93.5% of patients revealed coronary artery disease and / or arterial hypertension, in 6.5% - non-coronary heart diseases. The risk of tromboembolism assessed by CHADS2 and CHA2DS2-VASc scores. Results. Patients at low risk of tromboembolism, according to CHADS2 score was 2.8%, in their absence, on a CHA2DS2-VASc score. Patients with moderate risk of tromboembolism, in these scores were 63.9% and 7,4% (χ2=72.653; p=0.000) respectively, and a high risk of tromboembolism - 33,3% and 92,6% (χ2=78,796, p=0.000) respectively. Depending on the ways to prevent tromboembolism, patients were divided into 2 groups. 1st group included patients treated with warfarin (n=90), and the endpoints were observed in 5.6% of patients. 2nd group included patients (n=18) treated with acetylsalicylic acid (ASA) and the end point was observed in 27.8% of patients. Conclusion. The introduction of a new CHA2DS2-VASc score led to an increase number of patients, who need mandatory anticoagulant therapy by 2.8 times. In the group of patients with atrial fibrillation treated with warfarin compared with a group of patients treated with aspirin, where cases of ischemic stroke have developed less often, and their clinical manifestation are less pronounced and are characterized by a benign course.

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Antithrombotic Therapy in Atrial Fibrillation: Recent Approaches and Near Perspectives

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Research of spontaneous and stimulated functional activity of platelets in patients with different types of atrial fibrillation

Research of spontaneous and stimulated functional activity of platelets in patients with different types of atrial fibrillation

Prediction of Thromboembolism in Patients With Long-Lasting Atrial Fibrillation

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