title: [1st derivative of apex cardiography and its usefulness in the assessment of the functional state of the left ventricle].
mesh_terms: D000328:Adult; D002339:Carotid Arteries / Q000000981:diagnostic imaging; D004562:Electrocardiography; D006321:Heart / Q000503:physiopathology*; D006352:Heart Ventricles / Q000503:physiopathology; D006439:Hemodynamics; D006801:Humans; D007702:Kinetocardiography; D010701:Phonocardiography; D011859:Radiography
vernacular_title: Peirwsza pochodna apeksokardiogramu. Prydatność w ocenie stanu czynnościowego lewej komory