title: Extrasystoles in man produced by direct mechanical irritation of the left or right ventricle.
authors.forename: F M
authors.initials: FM
authors.lastname: GROEDEL
authors.forename: P R
authors.initials: PR
authors.lastname: BORCHARDT
mesh_terms: D001145:Arrhythmias, Cardiac; D005117:Cardiac Complexes, Premature; D006321:Heart; D006352:Heart Ventricles; D006801:Humans; D008297:Male; D054971:Orthostatic Intolerance