title: The value of quantitative apex-cardiography as compared to intracardiac functional diagnostics of the left ventricle.
abstract: A quantitative procedure of recording the apex impulse as regards its duration, force and rate of development of force requires a DC amplification ensured by a semiconductor strain-gauge transducer. In addition, impact and diameter or stamp and internal diameter of the contact ring must be defined. Comparative measurements show a good correlation between timing, absolute values and the first derivatives.
mesh_terms: D006328:Cardiac Catheterization; D002306:Cardiac Volume; D004562:Electrocardiography; D005260:Female; D006331:Heart Diseases / Q000175:diagnosis*; D006352:Heart Ventricles / Q000503:physiopathology; D006801:Humans; D007702:Kinetocardiography / Q000379:methods; D008297:Male; D012666:Semiconductors; D014159:Transducers