[Ischemic alterations of the regional mechanical performance of the left ventricle. Study of parietal deformation as a vectorial time-dependent parameter and of pressure-length loops (author's transl)].
A study was carried out on 59 patients with significant stenosis (greater than or equal to 75%) in at least one coronary vessel. For each parietal region of the left ventricle the pattern of contraction was defined through a study of the regional deformation as vectorial time-dependent parameter and of the construction of the pressure-length loops. The different models obtained in basal conditions and through intervention (nitroglycerin and post-extrasystolic potentiation) were correlated with experimental data on ischemic alterations of the regional mechanical performance.
D002933:Cineradiography; D017023:Coronary Angiography; D003327:Coronary Disease / Q000188:drug therapy / Q000503:physiopathology*; D006352:Heart Ventricles / Q000000981:diagnostic imaging / Q000503:physiopathology*; D006801:Humans; D009200:Myocardial Contraction / Q000187:drug effects; D005996:Nitroglycerin / Q000494:pharmacology / Q000627:therapeutic use; D014672:Vectorcardiography
D005996:Nitroglycerin
Alterazioni ischemiche della meccanica regionale del ventricolo sinistro. Studio della deformazione parietale come parametro vettoriale tempo-dipendente e dei loops pressione-lunghezza.