title: Discrepancy between head-up tilt test results utilizing different protocols in the same patient.
authors.affiliation: Department of Internal Medicine, St. Louis University Medical Center, MO 63110.
authors.forename: D L
authors.initials: DL
authors.lastname: Janosik
authors.forename: H
authors.initials: H
authors.lastname: Genovely
authors.forename: C
authors.initials: C
authors.lastname: Fredman
authors.forename: P
authors.initials: P
authors.lastname: Bjerregaard
mesh_terms: D000328:Adult; D001919:Bradycardia / Q000175:diagnosis; D006801:Humans; D007024:Hypotension, Orthostatic / Q000175:diagnosis; D008297:Male; D011187:Posture / Q000502:physiology*; D015203:Reproducibility of Results; D013575:Syncope / Q000175:diagnosis* / Q000209:etiology