title: [Post-extrasystole potentiation in patients with organic heart diseases].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002118:Calcium / Q000378:metabolism; D005117:Cardiac Complexes, Premature / Q000175:diagnosis / Q000503:physiopathology*; D005260:Female; D006331:Heart Diseases / Q000503:physiopathology*; D006801:Humans; D007473:Ion Channels; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction
chemical_list: D007473:Ion Channels; D002118:Calcium