For citations:

Sycheva T.V., Perelman J.M. Echocardiographic characteristics of cardiac performance in patients with exacerbation of chronic obstructive pulmonary disease in the dynamics of the disease. Bulletin Physiology and Pathology of Respiration. 2025;(95):26-39. (In Russ.) https://doi.org/10.36604/1998-5029-2025-95-26-39