Two-dimension speckle tracking assessment of right ventricle in patients with acute inferior myocardial infarction and after percutaneous coronary interventions / 中华超声影像学杂志

ABSTRACT

ObjectiveTo evaluate the usefulness of speckle tracking imaging(STI) for assessment of systemic right ventricle (RV) function in patients with acute inferior myocardial infarction(MI) and the changes 7 days after percutaneous coronary interventions(PCI).MethodsTwo-dimensional imaging at the four chamber view was obtained with tracing of the entire RV endocardial border in 44 patients with acute inferior MI and 50 healthy volunteers.Peak longitudinal systolic strain and strain rate (S,SR)in six RV segment included the basal,mid,and apical segments of the RV free wall and septum.And thirty patients reexamined 7 days after PCI.ResultsThe S values in the base and mid segmental of RV free wall and all segments of right septum were significantly lower in patients with acute inferior MI( P ＜0.05).But the SR values only decreased in mid segment of right septum.Except the apical parts of RV free wall and right septum,the S values of others segmental were significantly improved( P ＜0.05) 7 days after PCI.But the SR values had no changes( P ＞0.05).ConclusionsSTI is a new and useful technology for assessment of RV function in acute inferior MI and the RV function can be improved by emergency PCI.