title: Hemodynamic analysis during isoproterenol-induced vasovagal syncope.
abstract: An isoproterenol-mediated increase in cardiomotor tone and a decrease in afterload contribute to the induction of vasovagal syncope. Contrary to conventional belief, a significant decrease in preload is not observed immediately before isoproterenol-induced syncope.
authors.affiliation: Department of Neurology, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA.
authors.forename: W K
authors.initials: WK
authors.lastname: Shen
authors.forename: A M
authors.initials: AM
authors.lastname: Fenton
authors.forename: C M
authors.initials: CM
authors.lastname: Lohse
authors.forename: K R
authors.initials: KR
authors.lastname: Bailey
authors.forename: P A
authors.initials: PA
authors.lastname: Low
authors.forename: S C
authors.initials: SC
authors.lastname: Hammill
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002316:Cardiotonic Agents / Q000008:administration & dosage / Q000009:adverse effects*; D005260:Female; D006439:Hemodynamics / Q000187:drug effects*; D006801:Humans; D007262:Infusions, Intravenous; D007545:Isoproterenol / Q000008:administration & dosage / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D019462:Syncope, Vasovagal / Q000139:chemically induced* / Q000503:physiopathology; D018667:Tilt-Table Test
chemical_list: D002316:Cardiotonic Agents; D007545:Isoproterenol