Evidence map›Paper›PMID 29532491›Full record

ArticleClinical cardiology2018

Association between transthoracic impedance and electrical cardioversion success with biphasic defibrillators: An analysis of 1055 shocks for atrial fibrillation and flutter.

Mouhannad M Sadek, Varsha Chaugai, Mark J Cleland, Timothy J Zakutney, David H Birnie, F Daniel Ramirez

Open access · bronzeAbstract read
In one paragraph

Article in Clinical cardiology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 18% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 20 citations in OpenAlex.

  1. Pooled it
  2. Evaluation of a novel cardioversion intervention for atrial fibrillation: the Ottawa AF cardioversion protocol.Europace : European pacing, arrhythmias, and cardiac electrophysiology : journal of the working groups on cardiac pacing, arrhythmias, and cardiac cellular electrophysiology of the European Society of Cardiology · 2019
    Trial
  3. Article
  4. Article
  5. Observational
  6. Article
  7. Article
  8. Article
  9. [Recent advances in external cardiac defibrillation techniques].Sheng wu yi xue gong cheng xue za zhi = Journal of biomedical engineering = Shengwu yixue gongchengxue zazhi · 2020
    Review
  10. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors at 1 institution in 1 country.

Mouhannad M SadekDivision of Cardiology, University of Ottawa Heart Institute, Ottawa, Ontario, Canada.
Varsha ChaugaiBiomedical Engineering, University of Ottawa Heart Institute, Ottawa, Ontario, Canada.
Mark J ClelandBiomedical Engineering, University of Ottawa Heart Institute, Ottawa, Ontario, Canada.
Timothy J ZakutneyBiomedical Engineering, University of Ottawa Heart Institute, Ottawa, Ontario, Canada.
David H BirnieDivision of Cardiology, University of Ottawa Heart Institute, Ottawa, Ontario, Canada.
F Daniel RamirezDivision of Cardiology, University of Ottawa Heart Institute, Ottawa, Ontario, Canada.ORCID http://orcid.org/0000-0002-4350-1652
University of Ottawa · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe relevance of transthoracic impedance (TTI) to electrical cardioversion (ECV) success for atrial tachyarrhythmias when using biphasic waveform defibrillators is unknown. HYPOTHESIS: TTI is predictive of ECV success with contemporary defibrillators.

methodsDe-identified data stored in biphasic defibrillator memory cards from ECV attempts for atrial fibrillation (AF) or atrial flutter (AFL) over a 2-year period at our center were evaluated. ECV success, defined as arrhythmia termination and ≥ 1 sinus beat, was adjudicated by 2 blinded cardiac electrophysiologists. The association between TTI and ECV success was assessed via Cochrane-Armitage trend and Spearman rank correlation tests, as well as simple and multivariable logistic regression. The influence of TTI on the number of shocks and on cumulative energy delivered per patient was also examined.

results703 patients (593 with AF, 110 with AFL) receiving 1055 shocks were included. Last shock success was achieved in 88.0% and 98.2% of patients with AF and AFL, respectively. In patients with AF, TTI was positively associated with last shock failure (P

conclusionsAlthough contemporary defibrillators are designed to compensate for TTI, this variable continues to be associated with ECV failure in patients with AF. Strategies to lower TTI during ECV for AF may improve procedural success.

Indexed as

Cardiography, ImpedanceAtrial FibrillationAtrial FlutterElectric CountershockElectric ImpedanceElectrophysiologic Techniques, CardiacHumansPredictive Value of TestsRetreatmentRisk FactorsTreatment FailureAtrial FibrillationCardioversionDefibrillationGeneral Clinical Cardiology/Adult

Identifiers

PMID29532491
PMCPMC6489922
OpenAlexW2793128084

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.