title: Occurrence of intermittent Wolff-Parkinson-White syndrome during intravenous sedation.
abstract: Patients with intermittent Wolff-Parkinson-White (WPW) syndrome, defined as intermittent loss of the delta waves, can show occasional conduction through the accessory pathway. WPW syndrome often causes paroxysmal supraventricular tachycardia or atrial fibrillation. However, it may be difficult to identify the abnormalities preoperatively because of their only intermittent occurrence. We report a case in which exogenously administered epinephrine and an autonomic imbalance may have precipitated the abrupt occurrence and disappearance of the delta waves.
authors.affiliation: Section of Anesthesiology and Clinical Physiology, Department of Oral Restitution, Division of Oral Health Sciences, Graduate School, Tokyo Medical and Dental University, Bunkyo-ku, Tokyo 113-8549, Japan. ryoanph@tmd.ac.jp
authors.forename: Ryo
authors.initials: R
authors.lastname: Wakita
authors.forename: Masato
authors.initials: M
authors.lastname: Takahashi
authors.forename: Chikako
authors.initials: C
authors.lastname: Ohe
authors.forename: Hikaru
authors.initials: H
authors.lastname: Kohase
authors.forename: Masahiro
authors.initials: M
authors.lastname: Umino
mesh_terms: D018686:Anesthetics, Intravenous; D016292:Procedural Sedation / Q000009:adverse effects*; D004562:Electrocardiography; D004837:Epinephrine / Q000494:pharmacology; D005260:Female; D006801:Humans; D006985:Hyperventilation / Q000503:physiopathology; D008875:Middle Aged; D008963:Molar / Q000601:surgery; D015742:Propofol; D016896:Treatment Outcome; D014927:Wolff-Parkinson-White Syndrome / Q000503:physiopathology*
chemical_list: D018686:Anesthetics, Intravenous; D015742:Propofol; D004837:Epinephrine