Key result
Surgical revascularization is linked to improved LV strain rates, most prominently 2 to 5 years post-MI.
Why the study?
Does surgical revascularization improve left ventricular fiber function (strain and strain rate) in patients with prior myocardial infarction, and does this depend on the remoteness of the MI?
Observational (n=51)
Does surgical revascularization improve left ventricular fiber function (strain and strain rate) in patients with prior myocardial infarction, and does this depend on the remoteness of the MI?
Surgical revascularization yields the most favorable changes in left ventricular deformation properties in patients whose myocardial infarction occurred 2 to 5 years prior.
Revascularization timing may influence post-MI LV strain recovery; leaves open optimal window pending prospective trials.
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.
No takes yet. Share an insight, caveat, or question.
Petrova et al. (2016) conducted an observational in Myocardial infarction (n=51). Surgical revascularization vs. Pre-revascularization baseline was evaluated on Function of fibers of the left ventricle (strain and strain rate). Surgical revascularization improved strain rate of longitudinal and circular fibers most prominently in patients whose myocardial infarction occurred 2 to 5 years prior.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: