title: Baseline left-ventricular function during frequent ventricular or atrial ectopic beats: concise communication.
mesh_terms: D000328:Adult; D000368:Aged; D001145:Arrhythmias, Cardiac / Q000000981:diagnostic imaging* / Q000503:physiopathology; D002302:Cardiac Output; D009202:Cardiomyopathies / Q000000981:diagnostic imaging* / Q000503:physiopathology; D003327:Coronary Disease / Q000000981:diagnostic imaging* / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D011877:Radionuclide Imaging