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Comparative Study
Journal Article
Vitamin K Antagonists Versus Novel Oral Anticoagulants for Elective Electrical Cardioversion of Atrial Fibrillation.
American Journal of Therapeutics 2017 September
BACKGROUND: The management strategy for patients with atrial fibrillation (AF) is often very complex, electrical cardioversion (EC) being often used to restore sinus rhythm in those patients. The increased risk of thromboembolic complications was lowered using anticoagulation therapy. Usually, the anticoagulation was achieved using vitamin K antagonists (VKAs), but over the last years we witnessed a wide implementation of the novel oral anticoagulants (NOACs).
STUDY QUESTION: Study question was to compare the efficacy of NOACs versus VKAs in patients undergoing elective EC for persistent AF, by assessing the presence of left atrial spontaneous contrast and left atrial thrombi (LACS), as well as the occurrence of the thromboembolic events in the first month after the procedure.
STUDY DESIGN: A prospective study, including patients with persistent AF enrolled between January 1, 2015 and December 31, 2016, was conducted in 2 tertiary cardiology clinics. In all these patients, a management strategy based on EC was considered for the treatment of the disease. All patients received anticoagulant therapy for at least 3 weeks before cardioversion. The data of 103 patients were analyzed.
RESULTS: The patients were divided into 2 groups: group A-VKAs treated-included 45 patients (43.68%), mean age 65.3 ± 12.47, 36% women; group B-NOACs treated-included 58 patients (56.31%), mean age 66.4 ± 9.79, 46% women. There was a trend toward higher incidence of left atrial thrombi in group B (16.28%) versus group A (7.69%), but the difference was not statistically significant (P = 0.5). The incidence of LACS was 40% in group A and 29% in group B, (P = 0.54).
CONCLUSION: There are no statistically significant differences between the transesophageal echocardiography characteristics of left atrium and left atrial appendage examinations in the patients who received anticoagulation with VKAs as compared to patients who received anticoagulation with NOACs.
STUDY QUESTION: Study question was to compare the efficacy of NOACs versus VKAs in patients undergoing elective EC for persistent AF, by assessing the presence of left atrial spontaneous contrast and left atrial thrombi (LACS), as well as the occurrence of the thromboembolic events in the first month after the procedure.
STUDY DESIGN: A prospective study, including patients with persistent AF enrolled between January 1, 2015 and December 31, 2016, was conducted in 2 tertiary cardiology clinics. In all these patients, a management strategy based on EC was considered for the treatment of the disease. All patients received anticoagulant therapy for at least 3 weeks before cardioversion. The data of 103 patients were analyzed.
RESULTS: The patients were divided into 2 groups: group A-VKAs treated-included 45 patients (43.68%), mean age 65.3 ± 12.47, 36% women; group B-NOACs treated-included 58 patients (56.31%), mean age 66.4 ± 9.79, 46% women. There was a trend toward higher incidence of left atrial thrombi in group B (16.28%) versus group A (7.69%), but the difference was not statistically significant (P = 0.5). The incidence of LACS was 40% in group A and 29% in group B, (P = 0.54).
CONCLUSION: There are no statistically significant differences between the transesophageal echocardiography characteristics of left atrium and left atrial appendage examinations in the patients who received anticoagulation with VKAs as compared to patients who received anticoagulation with NOACs.
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