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Changes in AV Node Conduction Curves Following Slow Pathway Modification.

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Title: Changes in AV Node Conduction Curves Following Slow Pathway Modification.
Authors: Geller, J. Christoph1 Christoph.Geller@medizin-uni-magdeburg.de, Goette, Andreas1, Reek, Sven1, Funke, Corinna1, Hartung, Wolfgang M.1, Klein, Helmut U.1
Source: Pacing & Clinical Electrophysiology. Nov2000, Vol. 23 Issue 11, p1651-1660. 10p.
Subjects: Atrioventricular node, Heart conduction system, Patients, Tachycardia, Electrotherapeutics, Electrophysiology
Abstract: Dual AV node physiology often persists after successful slow pathway (SP) ablation, and the mechanism of tachycardia elimination is unresolved. Therefore, AV node conduction curves were analyzed following successful ablation (4 ± 1 energy applications) in 85 consecutive patients (58 women, age 50 ± 2 years) with typical AVNRT. Twenty-seven patients (32%) had complete elimination (group 1) whereas 58 (68%) patients had persistence (group 2) of dual AV node physiology. A significant increase in the AV node Wenckebach cycle length (WB-CL) was observed in both groups (310 ± 9 to 351 ±15 ms in group 1, and 325 ± 8 to 369 ± 9 ms in group 2.P < 0.05). A decrease in the fast pathway (FP) ERP (339 ± 15 to 279 ± 12 ms) and an increase in the maximum FP AH interval (141 ± 5 to 171 ±7) were observed only in group 1 (P < 0.05). In group 2, no change in the SP FRP (267 ± 7 to 280 ± 10 ms) was observed, and the change in the maximum SP-AH following ablation showed a significant inverse relation to the maximum SP-AH at baseline in group 2. In conclusion, (1) an increase in the WB-CL is observed independent of the persistence or elimination of dual physiology after successful ablation; (2) when dual physiology is eliminated, significant changes in the FP ERP and the maximum FP-AH occur; (3) when dual physiology persists, FP physiology and the SP FRP remain unchanged, and a significant inverse relation between the change in the maximum SP-AH following ablation and the maximum baseline SP-AH is observed. [ABSTRACT FROM AUTHOR]
Copyright of Pacing & Clinical Electrophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
  Group: Ti
  Data: Changes in AV Node Conduction Curves Following Slow Pathway Modification.
– Name: Author
  Label: Authors
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  Data: &lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Geller%2C+J%2E+Christoph%22&quot;&gt;Geller, J. Christoph&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;i&gt; Christoph.Geller@medizin-uni-magdeburg.de&lt;/i&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Goette%2C+Andreas%22&quot;&gt;Goette, Andreas&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Reek%2C+Sven%22&quot;&gt;Reek, Sven&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Funke%2C+Corinna%22&quot;&gt;Funke, Corinna&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Hartung%2C+Wolfgang+M%2E%22&quot;&gt;Hartung, Wolfgang M.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;AR&quot; term=&quot;%22Klein%2C+Helmut+U%2E%22&quot;&gt;Klein, Helmut U.&lt;/searchLink&gt;&lt;relatesTo&gt;1&lt;/relatesTo&gt;
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  Data: &lt;searchLink fieldCode=&quot;JN&quot; term=&quot;%22Pacing+%26+Clinical+Electrophysiology%22&quot;&gt;Pacing &amp; Clinical Electrophysiology&lt;/searchLink&gt;. Nov2000, Vol. 23 Issue 11, p1651-1660. 10p.
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  Data: &lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Atrioventricular+node%22&quot;&gt;Atrioventricular node&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Heart+conduction+system%22&quot;&gt;Heart conduction system&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Patients%22&quot;&gt;Patients&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Tachycardia%22&quot;&gt;Tachycardia&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Electrotherapeutics%22&quot;&gt;Electrotherapeutics&lt;/searchLink&gt;&lt;br /&gt;&lt;searchLink fieldCode=&quot;DE&quot; term=&quot;%22Electrophysiology%22&quot;&gt;Electrophysiology&lt;/searchLink&gt;
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Dual AV node physiology often persists after successful slow pathway (SP) ablation, and the mechanism of tachycardia elimination is unresolved. Therefore, AV node conduction curves were analyzed following successful ablation (4 &#177; 1 energy applications) in 85 consecutive patients (58 women, age 50 &#177; 2 years) with typical AVNRT. Twenty-seven patients (32%) had complete elimination (group 1) whereas 58 (68%) patients had persistence (group 2) of dual AV node physiology. A significant increase in the AV node Wenckebach cycle length (WB-CL) was observed in both groups (310 &#177; 9 to 351 &#177;15 ms in group 1, and 325 &#177; 8 to 369 &#177; 9 ms in group 2.P &lt; 0.05). A decrease in the fast pathway (FP) ERP (339 &#177; 15 to 279 &#177; 12 ms) and an increase in the maximum FP AH interval (141 &#177; 5 to 171 &#177;7) were observed only in group 1 (P &lt; 0.05). In group 2, no change in the SP FRP (267 &#177; 7 to 280 &#177; 10 ms) was observed, and the change in the maximum SP-AH following ablation showed a significant inverse relation to the maximum SP-AH at baseline in group 2. In conclusion, (1) an increase in the WB-CL is observed independent of the persistence or elimination of dual physiology after successful ablation; (2) when dual physiology is eliminated, significant changes in the FP ERP and the maximum FP-AH occur; (3) when dual physiology persists, FP physiology and the SP FRP remain unchanged, and a significant inverse relation between the change in the maximum SP-AH following ablation and the maximum baseline SP-AH is observed. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: &lt;i&gt;Copyright of Pacing &amp; Clinical Electrophysiology is the property of Wiley-Blackwell and its content may not be copied or emailed to multiple sites without the copyright holder&#39;s express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.&lt;/i&gt; (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1046/j.1460-9592.2000.01651.x
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      – Code: eng
        Text: English
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        PageCount: 10
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    Subjects:
      – SubjectFull: Atrioventricular node
        Type: general
      – SubjectFull: Heart conduction system
        Type: general
      – SubjectFull: Patients
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      – SubjectFull: Tachycardia
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      – SubjectFull: Electrotherapeutics
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      – SubjectFull: Electrophysiology
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      – TitleFull: Changes in AV Node Conduction Curves Following Slow Pathway Modification.
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              M: 11
              Text: Nov2000
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              Y: 2000
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