Evidence map›Paper›PMID 21103927›Full record

ReviewHeart failure reviews2011

Mechano-energetics of the asynchronous and resynchronized heart.

Frits W Prinzen, Kevin Vernooy, Bart W L De Boeck, Bart W L DeBoeck, Tammo Delhaas

Erratum issuedAbstract readReview
In one paragraph

Review in Heart failure reviews, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. An erratum has been issued. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

23 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Review
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Segment length in cine (SLICE) strain analysis: a practical approach to estimate potential benefit from cardiac resynchronization therapy.Journal of cardiovascular magnetic resonance : official journal of the Society for Cardiovascular Magnetic Resonance · 2021
    Article
  9. Article
  10. Efficiency is key.European heart journal. Cardiovascular Imaging · 2020
    Article
  11. Article
  12. Cardiac Resynchronization Therapy in Pediatrics.The Journal of innovations in cardiac rhythm management · 2018
    Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Review
  18. Myocardial oxidative metabolism, blood flow and efficiency in rapid pacing induced heart failure in dogs.International journal of physiology, pathophysiology and pharmacology · 2014
    Article
  19. Article
  20. Review
4 · The record

Corrections and comments

  • Erratum issued
    Deboeck, Bart W L [corrected to De Boeck, Bart W L]
5 · Who and what money

Authors and funding

5 authors.

Frits W PrinzenDepartment of Physiology, Cardiovascular Research Institute Maastricht, Maastricht University, P.O. Box 616, 6200 MD Maastricht, The Netherlands. frits.prinzen@fys.unimaas.nl
Kevin Vernooy
Bart W L De Boeck
Bart W L DeBoeck
Tammo Delhaas

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Abnormal electrical activation of the ventricles creates major abnormalities in cardiac mechanics. Local contraction patterns, as reflected by measurements of local strain, are not only out of phase, but often also show opposing length changes in early and late activated regions. As a consequence, the efficiency of cardiac pump function (the amount of stroke work generated by a unit of oxygen consumed) is approximately 30% lower in asynchronous than in synchronous hearts. Moreover, the amount of work performed in myocardial segments becomes considerably larger in late than in early activated regions. Cardiac Resynchronization Therapy (CRT) improves mechano-energetics of the previously asynchronous heart in various ways: it alleviates impediment of the abnormal contraction on blood flow, it increases myocardial efficiency, it recruits contraction in the previously early activated septum and it creates a more uniform distribution of myocardial blood flow. These factors act together to increase the range of cardiac work that can be delivered by the patients' heart, an effect that can explain the increased exercise tolerance and quality of life reported in several CRT trials.

Indexed as

Cardiac Resynchronization TherapyMyocardial ContractionHeartHeart FailureHumansTreatment Outcome

Identifiers

PMID21103927
PMCPMC3074058

What OpenQuestion holds

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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.