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January 1, 2001European Heart JournalOpen Access

Risk of development of delayed atrioventricular block after slow pathway modification in patients with atrioventricular nodal reentrant tachycardia and a pre-existing prolonged PR interval

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Why the study?

Does slow pathway modification increase the risk of delayed atrioventricular block in patients with atrioventricular nodal reentrant tachycardia and a pre-existing prolonged PR interval?

Population

346 consecutive patients with atrioventricular nodal reentrant tachycardia undergoing slow pathway…

Comparison

Slow pathway modification for atrioventricular… vs Patients without prolonged PR interval at…

Design

Cohort

Follow-up

6 months

Authors

YLYuelin Li

Discussion

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Overview

Close monitoring may be warranted after slow pathway modification in AVNRT with prolonged PR; leaves open optimal targets for prospective trials.

Structured PICO

Does slow pathway modification increase the risk of delayed atrioventricular block in patients with atrioventricular nodal reentrant tachycardia and a pre-existing prolonged PR interval?

P
Population
346 consecutive patients with atrioventricular nodal reentrant tachycardia undergoing slow pathway modification, including 18 patients with a pre-existing prolonged PR interval (mean age 62 +/- 7 years, 5 females).
I
Intervention
Slow pathway modification (ablation) for atrioventricular nodal reentrant tachycardia
C
Comparator
Patients without prolonged PR interval at baseline, or patients without total elimination of the slow pathway
O
Outcome
Development of delayed atrioventricular block assessed by 24-h Holter recordings up to 6 months after the proceduresafety

In patients with AVNRT and a prolonged PR interval, slow pathway modification carries a significant risk of delayed AV block, particularly when the slow pathway is totally eliminated.

Cite This Study

Yuelin Li (2001) studied this question.

synapsesocial.com/papers/6a7e659eda245de5ee4c42d4https://doi.org/10.1053/euhj.2000.2182
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Safety of Slow Pathway Ablation in Patients with Long PR Interval: Further Evidence of Fast and Slow Pathway Interaction1997 · 35 citations
  2. 2Fast pathway ablation in patients with common atrioventricular nodal reentrant tachycardia and prolonged PR interval during sinus rhythm1998 · 25 citations
  3. 3Selective radiofrequency ablation of the slow pathway for the treatment of atrioventricular nodal reentrant tachycardia. Evidence for involvement of perinodal myocardium within the reentrant circuit.1992 · 354 citations
  4. 4Selective transcatheter ablation of the fast and slow pathways using radiofrequency energy in patients with atrioventricular nodal reentrant tachycardia.1992 · 491 citations
  5. 5Elimination of atrioventricular nodal reentrant tachycardia using discrete slow potentials to guide application of radiofrequency energy.1992 · 609 citations