title: [Changes in the vector- and electrocardiograms in the Valsalva and Bürger test].
mesh_terms: D000293:Adolescent; D000328:Adult; D001795:Blood Pressure Determination; D004562:Electrocardiography; D006801:Humans; D008875:Middle Aged; D011674:Pulse; D014636:Valsalva Maneuver; D014672:Vectorcardiography
vernacular_title: Izmeneniia vektor- i élektrokardiogrammy pri probe Val'sal'vy i Biurgera.