title: [Laevocardiographic evaluation of left ventricular function. III. Aortic valve insufficiency (author's transl)].
abstract: 1. The normally functioning left ventricle is characterised by a definite relationship between end-diastolic volume and ejection fraction (reduction of lateral systolic projectional area by 50 to 60%. 2. With increasing volume, the left fentricle shows increasing, end-diastolic size. 3. With pure aortic insufficiency, end-diastolic ventricular size is larger than it is with combined aortic valve disease. Hypertrophy is the predominant reaction of the left ventricle to increased resistance, but also to co-existent insufficiency. In addition the ejection fraction rises with increasing resistance. 4. End-diastolic areas up to 85 cm.2 and end-diastolic pressures up to 20 mmHg. can be regarded, rare cases excepted, as indices of normal contraction and are associated with a normal ejection fraction.
mesh_terms: D000328:Adult; D001022:Aortic Valve Insufficiency / Q000150:complications / Q000000981:diagnostic imaging* / Q000503:physiopathology; D001024:Aortic Valve Stenosis / Q000150:complications / Q000000981:diagnostic imaging / Q000503:physiopathology; D001027:Aortography; D006328:Cardiac Catheterization; D006332:Cardiomegaly / Q000000981:diagnostic imaging / Q000503:physiopathology; D004562:Electrocardiography; D006352:Heart Ventricles / Q000503:physiopathology*; D006801:Humans; D008875:Middle Aged; D009200:Myocardial Contraction
vernacular_title: Lävokardiographische Untersuchungen zur Leistungsbeurteilung des linken Ventrikels III. Aortenklappeninsuffizienz