title: Late systolic apical impulses: the role of atrial contraction in their genesis.
mesh_terms: D000368:Aged; D006325:Heart Atria / Q000503:physiopathology*; D006327:Heart Block / Q000175:diagnosis / Q000503:physiopathology*; D006801:Humans; D007702:Kinetocardiography; D008297:Male; D010138:Pacemaker, Artificial