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Conduction properties of accessory atrioventricular pathways: Importance of the accessory pathway location and normal atrioventricular conduction

Liu, Shaowen LU ; Yuan, Shiwen LU and Olsson, Bertil LU (2003) In Scandinavian Cardiovascular Journal1997-01-01+01:00 37(1). p.43-48
Abstract
Objective-The objective of this study was to determine the conduction properties of the normal atrioventricular (AV) conduction system in relation to accessory pathway (AP) location in patients with symptomatic Wolff-Parkinson-White syndrome. Design-The conduction properties of the AP and the AV node were studied in 356 patients with single manifest AP who underwent successful ablation. Results-Sixty-three percent of the APs were located on the left free wall (226) and the remaining 37% were posteroseptal, anteroseptal and right free wall. AV block (PRgreater than or equal to220 ms) was observed in 15 patients, 8 cases being associated with the right free wall (15%) compared with 7 on the left free wall (3%, p=0.002) and none on the... (More)
Objective-The objective of this study was to determine the conduction properties of the normal atrioventricular (AV) conduction system in relation to accessory pathway (AP) location in patients with symptomatic Wolff-Parkinson-White syndrome. Design-The conduction properties of the AP and the AV node were studied in 356 patients with single manifest AP who underwent successful ablation. Results-Sixty-three percent of the APs were located on the left free wall (226) and the remaining 37% were posteroseptal, anteroseptal and right free wall. AV block (PRgreater than or equal to220 ms) was observed in 15 patients, 8 cases being associated with the right free wall (15%) compared with 7 on the left free wall (3%, p=0.002) and none on the anteroseptal (p=0.02) or posteroseptal (p=0.007). The PR (182+/-30 ms) and AH (102+/-25 ms) intervals associated with right free wall AP were longer than left free wall (166+/-23, 88+/-21 ms, p<0.0001, respectively), anteroseptal (155&PLUSMN;11, 79&PLUSMN;12 ms, p<0.0001) and posteroseptal AP (155+/-16, 79+/-13 ms, p<0.0001), whereas the PR and AH intervals associated with posteroseptal and anteroseptal AP were shorter than left free wall AP (p<0.05). When patients with AV block were excluded from the analysis, the PR intervals in patients with right free wall AP were still longer than in those with left free wall (p<0.005), anteroseptal (p<0.001) and posteroseptal AP (p<0.0001), as were the PR intervals associated with left free wall AP compared with data of posteroseptal (p<0.01) and anteroseptal AP (p<0.05). Significant differences in AV nodal effective refractory period, anterograde and retrograde AV block cycle length were also observed in relation to AP location. Conclusion-The conduction properties of the normal AV conduction system are associated with specific AP location in patients with Wolff-Parkinson-White syndrome. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Wolff -Parkinson-White syndrome, movement tachycardia, circus, accessory atrioventricular pathway, atrioventricular conduction
in
Scandinavian Cardiovascular Journal1997-01-01+01:00
volume
37
issue
1
pages
43 - 48
publisher
Taylor & Francis
external identifiers
  • wos:000182593000007
  • pmid:12745802
  • scopus:0038325518
ISSN
1651-2006
DOI
10.1080/14017430310007027
language
English
LU publication?
yes
id
cc55c281-df8d-4677-acf1-cf101a54f92e (old id 312400)
date added to LUP
2007-09-17 11:01:46
date last changed
2018-05-29 09:33:06
@article{cc55c281-df8d-4677-acf1-cf101a54f92e,
  abstract     = {Objective-The objective of this study was to determine the conduction properties of the normal atrioventricular (AV) conduction system in relation to accessory pathway (AP) location in patients with symptomatic Wolff-Parkinson-White syndrome. Design-The conduction properties of the AP and the AV node were studied in 356 patients with single manifest AP who underwent successful ablation. Results-Sixty-three percent of the APs were located on the left free wall (226) and the remaining 37% were posteroseptal, anteroseptal and right free wall. AV block (PRgreater than or equal to220 ms) was observed in 15 patients, 8 cases being associated with the right free wall (15%) compared with 7 on the left free wall (3%, p=0.002) and none on the anteroseptal (p=0.02) or posteroseptal (p=0.007). The PR (182+/-30 ms) and AH (102+/-25 ms) intervals associated with right free wall AP were longer than left free wall (166+/-23, 88+/-21 ms, p&lt;0.0001, respectively), anteroseptal (155&amp;PLUSMN;11, 79&amp;PLUSMN;12 ms, p&lt;0.0001) and posteroseptal AP (155+/-16, 79+/-13 ms, p&lt;0.0001), whereas the PR and AH intervals associated with posteroseptal and anteroseptal AP were shorter than left free wall AP (p&lt;0.05). When patients with AV block were excluded from the analysis, the PR intervals in patients with right free wall AP were still longer than in those with left free wall (p&lt;0.005), anteroseptal (p&lt;0.001) and posteroseptal AP (p&lt;0.0001), as were the PR intervals associated with left free wall AP compared with data of posteroseptal (p&lt;0.01) and anteroseptal AP (p&lt;0.05). Significant differences in AV nodal effective refractory period, anterograde and retrograde AV block cycle length were also observed in relation to AP location. Conclusion-The conduction properties of the normal AV conduction system are associated with specific AP location in patients with Wolff-Parkinson-White syndrome.},
  author       = {Liu, Shaowen and Yuan, Shiwen and Olsson, Bertil},
  issn         = {1651-2006},
  keyword      = {Wolff -Parkinson-White syndrome,movement tachycardia,circus,accessory atrioventricular pathway,atrioventricular conduction},
  language     = {eng},
  number       = {1},
  pages        = {43--48},
  publisher    = {Taylor & Francis},
  series       = {Scandinavian Cardiovascular Journal1997-01-01+01:00},
  title        = {Conduction properties of accessory atrioventricular pathways: Importance of the accessory pathway location and normal atrioventricular conduction},
  url          = {http://dx.doi.org/10.1080/14017430310007027},
  volume       = {37},
  year         = {2003},
}