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Electrophysiologic effects of isoproterenol in children with the Wolff-Parkinson-White Syndrome Yoshiki Fujiseki 1 , Hidetoshi Fujino 1 , Masanori Hattori 1 , Yasuhiko Kamiya 1 , Setsuko Nishijima 1 , Noriyasu Umemura 1 , Morimi Shimada 1 , Toshiaki Sugiyama 2 , Seiji Matsukawa 2 , Ryouichi Nishikawa 2 1Department of Pediatrics, Shiga University of Medical Science 2Department of Pediatrics, Ohmi Hachiman City Hospital pp.189-194
Published Date 1989/2/15
DOI https://doi.org/10.11477/mf.1404205425
  • Abstract
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12 children with the Wolff-Parkinson-White (WPW) syndrome underwent electrophysiologic study before and after the intravenous administration of isopro-terenol. Effective refractory period of the accessory pathway and shortest paced cycle length with 1 : 1 atrioventricular (A-V) conduction via the accessory pathway were shortened after intravenous isopro-terenol in all patients.

Orthodromic reciprocating tachycardia was induced after isoproterenol in one patient who did not documented tachycardia attack or palpitation before.Anterograde A-V conduction via A-V node and retrograde V-A conduction via accessory pathway were enhanced. Thus, tachycardia cycle length was shortened.

Potential high risk group patient who develop hazardous atrial fibrillation during exercise in the WPW syndrome may be selected by isoproterenol infusion.


Copyright © 1989, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1200 印刷版ISSN 0452-3458 医学書院

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