ФУНКЦИЯ ВОЛОКОН ЛЕВОГО ЖЕЛУДОЧКА И ЕЕ ДИНАМИКА ПОСЛЕ РЕВАСКУЛЯРИЗАЦИИ В ЗАВИСИМОСТИ ОТ ДАВНОСТИ ПЕРЕНЕСЕННОГО ИНФАРКТА ПРИ ИСПОЛЬЗОВАНИИ ТЕХНОЛОГИИ VELOCITY VECTOR IMAGING

Indicators of function of fibers of the left ventricle (LV) are strain (S) and strain rate (SR). The aim: To evaluate the function of fibers of the LV and its dynamics after surgical revascularization, depending on the remoteness of a myocardial infarction (MI) using Velocity Vector Imaging. Materials and methods: 51 patients with MI were examined. Depending on the MI remoteness 3 groups were formed: group I - 15 (29%) patients with MI during last year, group II - 21 (42%) with onset of MI from 2 to 5 years ago, group III - 15 (31%) patients with MI more than 5 years ago. Results. In all groups S and SR of the longitudinal and circular fibers was reduced before revascularization. In the study of radial fibers only reduction of S was revealed. After surgical revascularization positive dynamics of SR longitudinal and circular fibers was observed in the group II. Positive dynamics of strain of longitudinal fibers was observed in group I, negative in group III. Conclusion. After surgical revascularization more changes of deformation properties is observed in the group II in the analysis of all fibers of the LV.