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April 16, 2018Journal of ArrhythmiaOpen Access

The area under the curve for predicting reconnection was 0.71, with an optimal cutoff value of 5200 for the product of impedance decrease and force-time integral (sensitivity 78%, specificity 63%).

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Why the study?

Does the product of impedance decrease and force-time integral predict intraprocedural reconnection during radiofrequency catheter ablation for atrial fibrillation?

Population

34 consecutive patients undergoing their first ablation for atrial fibrillation, mean age 66 ± 8.7 years, 10…

Design

Cohort

Follow-up

intraprocedural

Authors

OIOsamu InabaYNYasutoshi NagataMSMasahiro Sekigawa

Discussion

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Overview

May inform intraprocedural reconnection risk in AF ablation; hypothesis-generating, requiring prospective validation before practice change.

Structured PICO

Does the product of impedance decrease and force-time integral predict intraprocedural reconnection during radiofrequency catheter ablation for atrial fibrillation?

P
Population
34 consecutive patients (total 3264 lesions) undergoing their first ablation for atrial fibrillation (AF), mean age 66 ± 8.7 years, 10 females.
I
Intervention
Radiofrequency catheter ablation (RFCA) with monitoring of impedance decrease, contact force (CF), application time, and force-time integral (FTI).
O
Outcome
Myocardial injury (assessed by increase in cardiac troponin I) and incidence of intraprocedural pulmonary vein-left atrium reconnection or dormant conduction.surrogate

The product of impedance decrease and force-time integral (PIFT) during radiofrequency catheter ablation for atrial fibrillation can help predict intraprocedural reconnection.

Cite This Study

Inaba et al. (2018) studied this question.

synapsesocial.com/papers/6a7cf581c502fdf5e03944fahttps://doi.org/10.1002/joa3.12056
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Also Consider

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

  1. 1Target Indices for Clinical Ablation in Atrial Fibrillation2014 · 62 citations
  2. 2Combined contact force and local impedance dynamics during repeat atrial fibrillation catheter ablation2022 · 7 citations
  3. 3Clinical Impact of an Open‐Irrigated Radiofrequency Catheter with Direct Force Measurement on Atrial Fibrillation Ablation2012 · 94 citations
  4. 4Association Between Contact Force and Acute Lesion Effectiveness in Focal Pulsed Field Ablation2026
  5. 5Clinical and experimental evaluation of averaged impedance drop during radiofrequency catheter ablation2026