Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector5939110.17816/kazmj59391EditorialThe state of vascular tone in patients with rheumatismRubkinL. I.info@eco-vector.com2907196748494942601202126012021Copyright © 2021, Rubkin L.I.2021<p>We studied 69 patients with cardiac rheumatism (age - from 16 to 44 years) and 25 healthy (age - from 18 to 42 years). The work was carried out on a two-channel electrocardiograph.</p>Kazan Medical archiveКазанский медицинский архив