---
abstract: 'Administration of adenosine triphosphate (ATP) in sinus rhythm identifies dual atrioventricular node physiology (DAVNP) in 75% of patients with inducible slow / fast AV nodal reentrant tachycardia (AVNRT). The incidence of DAVNP following termination of AVNRT with ATP is unknown. Incremental doses of ATP (10-60mg) were administered, first in sinus rhythm and then during tachycardia induced at electrophysiologic study, to 84 patients with inducible AVNRT and to 18 control patients with inducible AV reentrant tachycardia (AVRT) and no electrophysiologic evidence of DAVNP. Study end-points were the occurrence of DAVNP or > 2nd degree AV block following administration of ATP in sinus rhythm and tachycardia termination following administration of ATP during tachycardia. Of the 82 patients with AVNRT who completed the study, 62 (75.6%) exhibited DAVNP following administration of 17.1 + 9.4 mg ATP in sinus rhythm, while 30 (36.5%) exhibited DAVNP at the termination of AVNRT following administration of 10.6 + 2.4 mg ATP. The occurrence of DAVNP following the administration of 10 mg ATP in sinus rhythm.was a good predictor (62%) of its occurrence after termination of AVNRT with ATP. The dose of ATP had a strong correlation between the presence of DAVNP following AVNRT termination and the ATP doses needed for tachycardia termination. Of the 18 control patients, none had DAVNP at ATP test during sinus rhythm but 1 (5.5%) showed slight (60 msec) PR jump after termination of AVRT with ATP. In conclusion, DAVNP is present in a relatively high proportion (36.5%) of patients following termination of AVNRT with ATP but is much less frequent (5.5%) in control patients. Thus, findings at termination of tachycardia by ATP may be useful in the noninvasive diagnosis of the mechanism of a paroxysmal supraventricular tachycardia. '
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  - http://www.ipej.org/0301/nabar3.htm
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creators_name:
  - family: Nabar
    given: Ashish
    honourific: ''
    lineage: ''
date: 2003-01
date_type: published
datestamp: 2005-05-02
department: ~
dir: disk0/00/00/42/95
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editors_id: []
editors_name:
  - family: Singh
    given: Balbir
    honourific: ''
    lineage: ''
  - family: Lokhandwala
    given: Yash
    honourific: ''
    lineage: ''
  - family: Francis
    given: Johnson
    honourific: ''
    lineage: ''
  - family: Gupta
    given: Anup
    honourific: ''
    lineage: ''
eprint_status: archive
eprintid: 4295
fileinfo: /style/images/fileicons/text_html.png;/4295/1/nabar3.htm
full_text_status: public
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keywords: 'European, Cardiology, Electrophysiology'
lastmod: 2011-03-11 08:56:01
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metadata_visibility: show
note: ~
number: 1
pagerange: 41-43
pubdom: TRUE
publication: Indian Pacing and Electrophysiology Journal
publisher: Indian Pacing and Electrophysiology Group
refereed: TRUE
referencetext: ~
relation_type: []
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reportno: ~
rev_number: 8
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source: ~
status_changed: 2007-09-12 16:58:10
subjects:
  - ipej
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thesistype: ~
title: 'Excerpts from Electrophysiology Sessions at the European Society of Cardiology Congress 2002 - Berlin'
type: journalp
userid: 4424
volume: 3
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