EVALUATION OF THE ECHOCARDIOGRAPHIC PARAMETERS IN PAROXYSMAL AND PERSISTENT ATRIAL FIBRILLATION
Abstract:
Echocardiography is the imaging technique mostly used in clinical cardiology practice, occupying a particular place in detecting and confirming certain diagnoses in cardiology, bringing useful information on cardiac structure and function. Currently, it is the primary imaging technique in cardiology and due to its skills (anatomical and functional diagnosis, noninvasive, accessible, easily repeatable, cost-effective), the use of echocardiography has grown increasingly in investigating the cardiac patients. The purpose of this research, conducted in the Cardiology Clinic within the County Clinical Emergency Hospital of Sibiu, was to study the dynamics of the contractile function of atrial myocardium after cardioversion, in order to assess the influence of left atrial size and its reservoir function (correlation between the ejection fraction of the left atrium and its maximum systolic volume), in successfully restoring and maintaining sinus rhythm performed by two methods of treatment, electrical cardioversion and drug conversion, as well as the assessment of pulmonary vein size in paroxysmal and persistent atrial fibrillation and their evolution after the conversion. The association between EF and the systolic maximum volume of the left atrium (left atrial reservoir function) is a closer indicator in terms of relapse rate in the patients with atrial fibrillation. Recurrences of atrial fibrillation are more common in the patients with EF <50% and a maximum systolic volume of the LA > 40 ml, the lowest rate of recurrence being recorded in the patients who were diagnosed with atrial fibrillation presenting EF ≥ 50% and with a maximum systolic volume of the LA < 40ml. Relapse rate is higher in the patients who were diagnosed with atrial fibrillation and had dilated PV compared with the patients who have been diagnosed with atrial fibrillation and with normal diameter of the pulmonary veins.
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