title: [A case of WPW syndrome with slow Kent documented by ATP injection].
abstract: A 46-year-old woman with chest tightness and palpitation at exercise was admitted to Sapporo Medical College Hospital for the evaluation of the ST-T changes on stress electrocardiogram. In this patient, PQ time was 0.14 second and pre-exitation was not clearly documented on electrocardiogram at rest. Bolus injection of 10 mg of adenosine-5'-triphosphate (ATP) demonstrated deltawave through the elongation of antegrade conduction of atrio-ventricular (AV) node. Electrophysiological study also showed left lateral accessory pathway with slow antegrade conduction, slow Kent. Stress 201-T1 myocardial scintigraphy using bicycle ergometer did not show the existence of ischemic region in spite of the ST-T changes on electrocardiogram. In this case, it seemed that a false positive ST-T changes might be caused by ventricular pre-exitation through slow Kent fiber. From these findings, it was suggested that the transient interruption on conduction through AV node by ATP bolus injection may be a useful diagnostic method in borderline pre-exitation syndrome.
authors.forename: K
authors.initials: K
authors.lastname: Tsuchihashi
authors.forename: A
authors.initials: A
authors.lastname: Endo
authors.forename: N
authors.initials: N
authors.lastname: Hikita
authors.forename: T
authors.initials: T
authors.lastname: Noto
authors.forename: F
authors.initials: F
authors.lastname: Kamei
authors.forename: T
authors.initials: T
authors.lastname: Nakata
authors.forename: M
authors.initials: M
authors.lastname: Iwakura
authors.forename: S
authors.initials: S
authors.lastname: Yonekura
authors.forename: A
authors.initials: A
authors.lastname: Hashimoto
authors.forename: S
authors.initials: S
authors.lastname: Tanaka
mesh_terms: D000255:Adenosine Triphosphate / Q000008:administration & dosage; D004562:Electrocardiography; D005080:Exercise Test; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology*; D006801:Humans; D007275:Injections, Intravenous; D008875:Middle Aged; D014927:Wolff-Parkinson-White Syndrome / Q000175:diagnosis*
chemical_list: D000255:Adenosine Triphosphate