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June 1, 1997Pacing and Clinical Electrophysiology

Safety of Slow Pathway Ablation in Patients with Long PR Interval: Further Evidence of Fast and Slow Pathway Interaction

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Why the study?

Does selective slow pathway ablation cause complete heart block in patients with prolonged PR intervals undergoing ablation for AV reentry tachycardia?

Population

7 patients with prolonged PR intervals undergoing catheter ablation for AV reentry tachycardia, mean age 66…

Design

Case_series

Authors

ANAndrea NataleRGRuth Ann GreenfieldMGMary Jane Geiger

Discussion

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Overview

May support safe selective slow pathway ablation in prolonged PR intervals; leaves open confirmation in larger prospective studies.

Structured PICO

Does selective slow pathway ablation cause complete heart block in patients with prolonged PR intervals undergoing ablation for AV reentry tachycardia?

P
Population
7 patients with prolonged PR intervals undergoing catheter ablation for AV reentry tachycardia, mean age 66 +/- 12 years, 4 female and 3 male.
I
Intervention
Selective slow pathway radiofrequency (RF) ablation using an anatomically guided stepwise approach.
O
Outcome
Occurrence of complete heart blocksafety

Selective slow pathway ablation can be performed safely without causing complete heart block in patients with prolonged PR intervals, though careful catheter positioning at anterior sites is required.

Cite This Study

Natale et al. (1997) studied this question.

synapsesocial.com/papers/6a7e659eda245de5ee4c42d6https://doi.org/10.1111/j.1540-8159.1997.tb03542.x
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Also Consider

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

  1. 1Selective 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
  2. 2Selective transcatheter ablation of the fast and slow pathways using radiofrequency energy in patients with atrioventricular nodal reentrant tachycardia.1992 · 491 citations
  3. 3Effects of Partial and Complete Ablation of the Slow Pathway on Fast Pathway Properties in Patients with Atrioventricular Nodal Reentrant Tachycardia1994 · 55 citations
  4. 4Shortening of fast pathway refractoriness after slow pathway ablation. Effects of autonomic blockade.1994 · 74 citations
  5. 5Catheter modification of the atrioventricular junction with radiofrequency energy for control of atrioventricular nodal reentry tachycardia.1991 · 339 citations