M.KH. VALEEV, N.R. KHASANOV Kazan Federal University, Kazan  Contact details: Valeev M.K. — cardiologist Address: 1a Chekhov St., Kazan, Russian Federation, 420012, tel.: +7-917-882-82-41, e-mail: vmh89@mail.ru Atrium fibrillation is one of the most frequent rhythm disruptions in patients with COVID infection. Restoration and maintenance of the sinus rhythm helps to improve hemodynamics and reduce the […]