title: [Deformations in the shape of the P wave--the frequency of the double-peak P wave in healthy persons and patients with atrial loading (studied with ECG and orthogonal ECG systems)].
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D004562:Electrocardiography / Q000379:methods*; D005260:Female; D006321:Heart / Q000502:physiology*; D006325:Heart Atria / Q000503:physiopathology; D006331:Heart Diseases / Q000175:diagnosis* / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: Deformatsii na formata na P-vŭlnata--chestota na dvuvŭrkhostta na P-vŭlnata u zdravi i bolni s predsŭrdno obremeniavane (prouchvane s EKG i ortogonalni EKG-sistemi).