Cited by 1,859Cardiac pacing and defibrillation studiesHeart Failure Treatment and ManagementCardiac Arrest and Resuscitation

Cardiac-Resynchronization Therapy for Mild-to-Moderate Heart Failure

Tang, Anthony S.L., Wells, George A., Talajic, Mario, Arnold, Malcolm O., Sheldon, Robert, Connolly, Stuart, Hohnloser, Stefan H., Nichol, Graham +5 more·2010·New England Journal of Medicine

Abstract

BACKGROUND: Cardiac-resynchronization therapy (CRT) benefits patients with left ventricular systolic dysfunction and a wide QRS complex. Most of these patients are candidates for an implantable cardioverter-defibrillator (ICD). We evaluated whether adding CRT to an ICD and optimal medical therapy might reduce mortality and morbidity among such patients. METHODS: We randomly assigned patients with New York Heart Association (NYHA) class II or III heart failure, a left ventricular ejection fraction of 30% or less, and an intrinsic QRS duration of 120 msec or more or a paced QRS duration of 200 msec or more to receive either an ICD alone or an ICD plus CRT. The primary outcome was death from any cause or hospitalization for heart failure. RESULTS: We followed 1798 patients for a mean of 40 months. The primary outcome occurred in 297 of 894 patients (33.2%) in the ICD-CRT group and 364 of 904 patients (40.3%) in the ICD group (hazard ratio in the ICD-CRT group, 0.75; 95% confidence interval [CI], 0.64 to 0.87; P<0.001). In the ICD-CRT group, 186 patients died, as compared with 236 in the ICD group (hazard ratio, 0.75; 95% CI, 0.62 to 0.91; P = 0.003), and 174 patients were hospitalized for heart failure, as compared with 236 in the ICD group (hazard ratio, 0.68; 95% CI, 0.56 to 0.83; P<0.001). However, at 30 days after device implantation, adverse events had occurred in 124 patients in the ICD-CRT group, as compared with 58 in the ICD group (P<0.001). CONCLUSIONS: Among patients with NYHA class II or III heart failure, a wide QRS complex, and left ventricular systolic dysfunction, the addition of CRT to an ICD reduced rates of death and hospitalization for heart failure. This improvement was accompanied by more adverse events. (Funded by the Canadian Institutes of Health Research and Medtronic of Canada; ClinicalTrials.gov number, NCT00251251.).

Integrity signals

Registry

Crossref · 10.1056/nejmoa1009540

Cites

29 of 29 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Tang, A. S. L., Wells, G. A., Talajic, M., Arnold, M. O., Sheldon, R., Connolly, S., Hohnloser, S. H., Nichol, G., Birnie, D. H., Sapp, J. L., Yee, R., Healey, J. S., & Rouleau, J. L.
Affiliations
  • University of British Columbia (CA)
  • Ottawa Heart Institute (CA)
  • Montreal Heart Institute (CA)
  • London Health Sciences Centre (CA)
  • University of Calgary (CA)
  • Hamilton Health Sciences (CA)
  • Goethe University Frankfurt (DE)
  • University of Washington (US)
  • Queen Elizabeth II Health Sciences Centre (CA)
Venue
New England Journal of Medicine
Published
2010-12-16
Volume
363
Issue
25
Pages
2385-2395
ISSN
  • 0028-4793 (ISSN-L)
  • 1533-4406
OpenAlex
W2141895646
Cited by
1,859
References
28
Citations by year
2026: 55 · 2025: 67 · 2024: 73 · 2023: 109 · 2022: 76 · 2021: 88 · 2020: 107 · 2019: 99 · 2018: 100 · 2017: 121 · 2016: 141 · 2015: 154 · 2014: 149 · 2013: 190 · 2012: 176
FWCI
113.15
Type
journal article
Language
en
Open access
closed
Locations
  • New England Journal of Medicine (publishedVersion)
  • PubMed (publishedVersion)
  • Adelaide Research & Scholarship (AR&S) (University of Adelaide) (submittedVersion)
Funders
Canadian Institutes of Health Research
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac pacing and defibrillation studies
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Heart Failure Treatment and Management
  • Health Sciences › Medicine › Emergency Medicine › Cardiac Arrest and Resuscitation
Keywords
cardiac resynchronization therapy, implantable cardioverter-defibrillator, heart failure, wide QRS complex, left ventricular systolic dysfunction, mortality, heart failure hospitalization, device implantation complications, optimal medical therapy, left ventricular ejection fraction
MeSH terms
Aged, Cardiac Pacing, Artificial, Double-Blind Method, Electrocardiography, Female, Heart Failure, Hospitalization, Humans, Male, Middle Aged, Severity of Illness Index, Defibrillators, Implantable, Ventricular Dysfunction, Left, Kaplan-Meier Estimate, Intention to Treat Analysis

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review