title: [Mechanics of tachycardia in sick sinus syndrome].
mesh_terms: D000328:Adult; D000368:Aged; D001146:Arrhythmia, Sinus / Q000503:physiopathology*; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D013610:Tachycardia / Q000503:physiopathology*
vernacular_title: Badania nad mechanizmami czestoskurczów w zespole chorego wezła zatokowego