| Retrograde supernormal conduction, gap phenomenon in concealed accessory atrioventricular pathways. | |
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MedLine Citation:
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PMID: 1378598 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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We present four patients with the Wolff-Parkinson-White syndrome who exhibited retrograde supernormal conduction or gap phenomenon in concealed accessory pathways. In the first patient, ventricular extrastimulus testing revealed retrograde block at the coupling interval of 520 msec and reappearance of conduction at the coupling interval of 370 msec. In a second patient, 1:1 retrograde conduction was not present but supernormal conduction was demonstrated at coupling intervals of 360 msec to 310 msec during the ventricular extrastimulus testing when the basic drive consisted of atrioventricular (AV) simultaneous pacing. In a third patient, ventricular extrastimulus testing demonstrated retrograde conduction through the accessory pathway only at coupling intervals of 400 msec to 360 msec. In a fourth patient, retrograde block occurred at the coupling interval of 340 msec and retrograde "slow" conduction reappeared at coupling intervals of 300 msec to 250 msec (gap phenomenon) only when the basic drive consisted of AV simultaneous pacing. Thus, concealed accessory pathways may exhibit retrograde supernormal conduction or gap phenomenon. Ventricular extrastimulus testing consisting of AV simultaneous pacing during the basic drive may facilitate demonstration of these unusual properties. |
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Authors:
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F Suzuki; T O Harada; H Nawata; K Ohtomo; T Satoh; K Hirao; K Hiejima |
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Publication Detail:
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Type: Case Reports; Journal Article |
Journal Detail:
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Title: Pacing and clinical electrophysiology : PACE Volume: 15 ISSN: 0147-8389 ISO Abbreviation: Pacing Clin Electrophysiol Publication Date: 1992 Jul |
Date Detail:
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Created Date: 1992-08-14 Completed Date: 1992-08-14 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 7803944 Medline TA: Pacing Clin Electrophysiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1065-79 Citation Subset: IM |
Affiliation:
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First Department of Internal Medicine, School of Medicine, Tokyo Medical and Dental University, Japan. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Cardiac Pacing, Artificial / methods* Electrocardiography Electrophysiology Female Heart Conduction System / physiopathology* Humans Isoproterenol / diagnostic use Male Middle Aged Wolff-Parkinson-White Syndrome / diagnosis, physiopathology* |
| Chemical | |
Reg. No./Substance:
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7683-59-2/Isoproterenol |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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