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Related Concept Videos

Pulse rhythm01:30

Pulse rhythm

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Pulse rhythm refers to the pattern of pulsations within specific intervals, offering valuable insights into the regularity or irregularity of the heart's beats as observed through the pattern of pulsation within specific intervals. A regular pulse exhibits a consistent heart rate with uniform waveforms and pulsation force, variations of which can be classified as normal, weak, or bounding.
Conversely, an irregular pulse pattern is termed dysrhythmia, stemming from disruptions in cardiac...
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Related Experiment Video

Updated: Mar 27, 2026

Transthoracic Speckle Tracking Echocardiography for the Quantitative Assessment of Left Ventricular Myocardial Deformation
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Transthoracic Speckle Tracking Echocardiography for the Quantitative Assessment of Left Ventricular Myocardial Deformation

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Is speckle tracking actually helpful for cardiac resynchronization therapy?

Hidekazu Tanaka1, Ken-Ichi Hirata2

  • 1Division of Cardiovascular Medicine, Department of Internal Medicine, Kobe University Graduate School of Medicine, 7-5-2 Kusunoki-cho, Chuo-ku, Kobe, 650-0017, Japan. tanakah@med.kobe-u.ac.jp.

Journal of Echocardiography
|January 16, 2016
PubMed
Summary

Echocardiography, particularly speckle-tracking, can help select patients for cardiac resynchronization therapy (CRT) who may not respond to standard criteria. This advanced imaging offers supplementary value for challenging CRT cases.

Keywords:
Cardiac resynchronization therapyDyssynchronyHeart failureSpeckle trackingStrain

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Area of Science:

  • Cardiology
  • Medical Imaging

Background:

  • Cardiac resynchronization therapy (CRT) improves outcomes in heart failure (HF) patients with wide QRS.
  • A notable portion of patients do not benefit from CRT based on current selection criteria.

Purpose of the Study:

  • To review the role of echocardiography, specifically speckle-tracking, in optimizing patient selection for CRT.
  • To evaluate the clinical utility of advanced echocardiographic methods for CRT.

Main Methods:

  • Review of current literature on echocardiography and CRT selection.
  • Focus on speckle-tracking echocardiography for assessing left ventricular (LV) dyssynchrony.
  • Analysis of the predictive value of echocardiographic parameters.

Main Results:

  • Standard echocardiography for LV dyssynchrony has shown limited predictive value for CRT response.
  • Speckle-tracking echocardiography offers more accurate regional wall motion assessment.
  • Speckle tracking shows promise as a supplementary tool for challenging CRT cases.

Conclusions:

  • Speckle-tracking echocardiography has potential clinical applications in CRT selection.
  • While not yet in guidelines, it can aid in case-by-case decisions for CRT.
  • Further research may solidify its role in optimizing CRT outcomes.