[Analysis of structural and functional indices of the children hearts with isolated abnormal chords of the left ventricle and who were born to parents irradiated during the Chernobyl accident].

156 children of the main group, born to parents irradiated in the result of Chernobyl disaster have been involved in the study. These children were identified with isolated abnormal chords of the left ventricle (AHLV) according the results of Doppler echocardiography. 39 practically healthy children and 24 children of the nosology control group have also been observed. Threshold quantity of AHLV were determined in 33 children, main group, (subgroup Ia), sub-threshold--in 123 children (subgroup I(B)). The children of the control group with threshold quantity of AHLV were found with decreased adaptation capacity of the cardio-vascular system through shifts in dynamics and energetics of the heart contraction. Reduction in systolic output, systolic and heart indices justify hypokinetic type of organization of central hemodynamics, which can be considered an early sign of tension of functional capabilities of the heart and blood vessels. This subgroup of children was found to have changes of transmitral blood flow indicating the initiation of the heart's diastolic dysfunction. Almost 1/3 of children with subthreshold number of AHLV were also revealed to have signs of initiation of the heart's diastolic dysfunction.