Dilated cardiomyopathy (DCM) is one of the most severe forms of myocardial disease and occurs at any age, including in infants. The course and prognosis of  DCM in children are characterized by significant variability. In most cases, however, outcomes are unfavorable due to the progression of treatment-resistant chronic heart failure and severe arrhythmias leading to death [1,4,6].

The factors determining the course of the disease remain unclear. To date, it is not fully understood why DCM follows different patterns: in some patients, the condition may regress during treatment, even leading to complete recovery, whereas in others it progresses steadily. It is possible that the mechanisms and causes of myocardial injury differ, which determines the variability in prognosis [2,10].

dilated cardiomyopathy, dyspnea, left ventricular failure, biventricular heart failure.

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