title: [Evaluation of functional reserves of the myocardium in patients with heart defects on the basis of changes in systolic time intervals during post-extrasystolic contraction].
abstract: Changes in pre-ejection period (T) and ejection time (E) during the post-extrasystolic beat, as compared to regular sinus rhythm, as well as ratios thereof can be useful for the assessment of myocardial activity and reserve in patients with heart diseases. The potentiation index, proposed by the authors, i. e. the ratio between the difference between absolute delta E-delta T changes and the absolute change in Weisler's coefficient (delta T/E), has the highest value in this respect.
authors: N G
authors: NG
authors: Serdiuk
authors: L F
authors: LF
authors: Sherdukalova
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D005117:Cardiac Complexes, Premature / Q000209:etiology / Q000503:physiopathology*; D002648:Child; D002675:Child, Preschool; D005260:Female; D006330:Heart Defects, Congenital / Q000150:complications / Q000503:physiopathology*; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000150:complications / Q000503:physiopathology*; D008946:Mitral Valve Stenosis / Q000150:complications / Q000503:physiopathology*; D009200:Myocardial Contraction; D013599:Systole
vernacular_title: Otsenka funktsional'nykh rezervov miokarda u bol'nykh porokami serdtsa po izmeneniiam vremennykh sistolicheskikh intervalov v postekstrasistolicheskom sokrasnchenii.