Evidence map›Paper›PMID 18362024›Full record

ArticleHeart rhythm2008

A computer modeling tool for comparing novel ICD electrode orientations in children and adults.

Matthew Jolley, Jeroen Stinstra, Steve Pieper, Rob Macleod, Dana H Brooks, Frank Cecchin, John K Triedman

Open access · greenAbstract readComparative Study
In one paragraph

Article in Heart rhythm, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 30 papers.

0numbers the graph read from it
0cells of the map it votes in
30citing papers in PubMed
5.5field-weighted citation impact, top 4% 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

30 citing papers in PubMed, 69 citations in OpenAlex.

  1. Additional coils mitigate elevated defibrillation threshold in right-sided implantable cardioverter defibrillator generator placement: a simulation study.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 · 2023
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  8. Effect of ventricular myocardium characteristics on the defibrillation threshold.Technology and health care : official journal of the European Society for Engineering and Medicine · 2018
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  17. Images as drivers of progress in cardiac computational modelling.Progress in biophysics and molecular biology · 2014
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 1 country.

Matthew JolleyDepartment of Cardiology, Children's Hospital Boston, Boston, Massachusetts 02115, USA.
Jeroen Stinstra
Steve Pieper
Rob Macleod
Dana H Brooks
Frank Cecchin
John K Triedman
Boston Children's Hospital · USUniversity of Utah · USBrigham and Women's Hospital · USNortheastern University · US

Funding

WHITE MATTER ARCHITECTURE FROM DT-MRIP41RR013218 · NCRR · BRIGHAM AND WOMEN'S HOSPITAL · PI WELLS, WILLIAM W · 1998 to 2011
$30.6M
VOLUME RENDERINGP41RR012553 · NCRR · UNIVERSITY OF UTAH · PI JOHNSON, CHRISTOPHER R. · 1999 to 2011
$15.5M
RESEARCH METHODS IN PEDIATRICS HEART DISEASET32HL007572 · NHLBI · CHILDREN'S HOSPITAL BOSTON · PI Sarah D DE FERRANTI, Jane W. Newburger · 1985 to 2026
$13.0M
TRD - VisualizationP41GM103545 · NIGMS · UNIVERSITY OF UTAH · PI JOHNSON, CHRISTOPHER R., MACLEOD, ROB S. · 2012 to 2019
$9.7M
NCRR NIH HHS P41 RR012553NCRR NIH HHS P41 RR013218NCRR NIH HHS P41 RR12557NCRR NIH HHS P41 RR13218NHLBI NIH HHS T32 HL007572NHLBI NIH HHS T32 HL07572NIGMS NIH HHS P41 GM103545
6 · The paper itself

Abstract

backgroundUse of implantable cardiac defibrillators (ICDs) in children and patients with congenital heart disease is complicated by body size and anatomy. A variety of creative implantation techniques has been used empirically in these groups on an ad hoc basis.

objectiveTo rationalize ICD placement in special populations, we used subject-specific, image-based finite element models (FEMs) to compare electric fields and expected defibrillation thresholds (DFTs) using standard and novel electrode configurations.

methodsFEMs were created by segmenting normal torso computed tomography scans of subjects ages 2, 10, and 29 years and 1 adult with congenital heart disease into tissue compartments, meshing, and assigning tissue conductivities. The FEMs were modified by interactive placement of ICD electrode models in clinically relevant electrode configurations, and metrics of relative defibrillation safety and efficacy were calculated.

resultsPredicted DFTs for standard transvenous configurations were comparable with published results. Although transvenous systems generally predicted lower DFTs, a variety of extracardiac orientations were also predicted to be comparably effective in children and adults. Significant trend effects on DFTs were associated with body size and electrode length. In many situations, small alterations in electrode placement and patient anatomy resulted in significant variation of predicted DFT. We also show patient-specific use of this technique for optimization of electrode placement.

conclusionImage-based FEMs allow predictive modeling of defibrillation scenarios and predict large changes in DFTs with clinically relevant variations of electrode placement. Extracardiac ICDs are predicted to be effective in both children and adults. This approach may aid both ICD development and patient-specific optimization of electrode placement. Further development and validation are needed for clinical or industrial utilization.

Indexed as

Computer SimulationDefibrillators, ImplantableElectrodesFinite Element AnalysisAdultBody SizeChildChild, PreschoolFemaleHeart Defects, CongenitalHumansMaleSoftware

Identifiers

PMID18362024
PMCPMC2745086
OpenAlexW2106610189

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.