title: Mechanisms of hypotension and bradycardia during regional anesthesia in the sitting position.
authors.forename: Gregory A
authors.initials: GA
authors.lastname: Liguori
authors.forename: Richard L
authors.initials: RL
authors.lastname: Kahn
authors.forename: Michael A
authors.initials: MA
authors.lastname: Gordon
authors.forename: Michael K
authors.initials: MK
authors.lastname: Urban
mesh_terms: D000765:Anesthesia, Conduction / Q000009:adverse effects*; D001919:Bradycardia / Q000209:etiology*; D006801:Humans; D007022:Hypotension / Q000209:etiology*; D007431:Intraoperative Complications / Q000503:physiopathology; D009407:Nerve Block / Q000009:adverse effects; D011187:Posture / Q000502:physiology*; D012782:Shoulder / Q000601:surgery; D014664:Vasodilation / Q000502:physiology