title: [Value of the analysis of left-ventricular systolic time intervals in the diagnosis of ischemic heart disease provoked by intravenous infusion of isoproterenol].
abstract: The aim of the study was to evaluate the value of analysis of left ventricular systolic intervals during Isuprel test in diagnosis of ischemic heart disease. 30 patients with ischemic heart disease without myocardial infarction in the past (group I) and after myocardial infarction (group II) as well as 15 healthy persons (group III) underwent the study. Electrocardiograms and polycardiograms were analyzed by means of Weissler's method. In patients with CAD during Isuprel test decrease of QS2I, LVETI, LVETI/S1S2 and increase of Q-1, ICT, PEPI, PEP/LVET were stated in comparison with healthy persons. Sensitivity of Isuprel test estimated by ST segment analysis was 80%, specificity 100%, predictive value for CAD confirmation 100% and for its exclusion 71.4%. Diagnostic value of Q-1, QS2I and LVETI intervals and PEP/LVET index did not statistically significantly differ from ST segment diagnostic value. Sensitivity of Isuprel test estimated by means of these intervals analysis was 63.3%, specificity 93.3-100%, predictive value for CAD confirmation 95-100%, and for its exclusion 56-57.7%. Analysis of left ventricular systolic intervals during Isuprel test is a valuable complement of an ECG examination.
authors.forename: K
authors.initials: K
authors.lastname: Markiewicz
authors.forename: Z
authors.initials: Z
authors.lastname: Gawor
authors.forename: M
authors.initials: M
authors.lastname: Cholewa
mesh_terms: D000328:Adult; D000368:Aged; D003327:Coronary Disease / Q000139:chemically induced / Q000175:diagnosis* / Q000503:physiopathology; D005260:Female; D006334:Heart Function Tests / Q000379:methods; D006352:Heart Ventricles / Q000187:drug effects / Q000503:physiopathology; D006801:Humans; D007262:Infusions, Intravenous; D007545:Isoproterenol / Q000008:administration & dosage; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction / Q000502:physiology*; D013599:Systole / Q000187:drug effects / Q000502:physiology*
chemical_list: D007545:Isoproterenol
vernacular_title: Wartość analizy podokresów skurczu lewej komory w rozpoznawaniu niedokrwienia mieśnia sercowego prowokowanego doźylnym wlewem izoproterenolu.