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Cited by 275

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Cardiac Dyssynchrony Analysis Using Circumferential Versus Longitudinal Strain: Implications for Assessing Cardiac Resynchronization

Open access
Helm, Robert H., Leclercq, Christophe, Faris, Owen P., Ozturk, Cengizhan, McVeigh, Elliot, Lardo, Albert C., Kass, David A.·2005·Circulation

Abstract

Background— QRS duration is commonly used to select heart failure patients for cardiac resynchronization therapy (CRT). However, not all patients respond to CRT, and recent data suggest that direct assessments of mechanical dyssynchrony may better predict chronic response. Echo-Doppler methods are being used increasingly, but these principally rely on longitudinal motion (ε ll ). It is unknown whether this analysis yields qualitative and/or quantitative results similar to those based on motion in the predominant muscle-fiber orientation (circumferential; ε cc ). Methods and Results— Both ε ll and ε cc strains were calculated throughout the left ventricle from 3D MR-tagged images for the full cardiac cycle in dogs with cardiac failure and a left bundle conduction delay. Dyssynchrony was assessed from both temporal and regional strain variance analysis. CRT implemented by either biventricular (BiV) or left ventricular–only (LV) pacing enhanced systolic function similarly and correlated with improved dyssynchrony based on ε cc -based metrics. In contrast, longitudinal-based analyses revealed significant resynchronization with BiV but not LV for the overall cycle and correlated poorly with global functional benefit. Furthermore, unlike circumferential analysis, ε ll -based indexes indicated resynchronization in diastole but much less in systole and had a lower dynamic range and higher intrasubject variance. Conclusions— Dyssynchrony assessed by longitudinal motion is less sensitive to dyssynchrony, follows different time courses than those from circumferential motion, and may manifest CRT benefit during specific cardiac phases depending on pacing mode. These results highlight potential limitations to ε ll -based analyses and support further efforts to develop noninvasive synchrony measures based on circumferential deformation.

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Metadata

Authors
Helm, R. H., Leclercq, C., Faris, O. P., Ozturk, C., McVeigh, E., Lardo, A. C., & Kass, D. A.
Venue
Circulation
Published
2005-05-31
Volume
111
Issue
21
Pages
2760-2767
ISSN
  • 0009-7322 (ISSN-L)
  • 1524-4539
OpenAlex
W1972515728
Cited by
275
References
32
FWCI
19.09
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Cardiac Dyssynchrony Analysis Using Circumferential Versus Longitudinal Strain: Implications for Assessing Cardiac Resynchronization. https://app.cochat.ai/papers/10.1161/circulationaha.104.508457
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Helm, R. H., Leclercq, C., Faris, O. P., Ozturk, C., McVeigh, E., Lardo, A. C., & Kass, D. A. (2005). Cardiac Dyssynchrony Analysis Using Circumferential Versus Longitudinal Strain: Implications for Assessing Cardiac Resynchronization. Circulation. https://doi.org/10.1161/circulationaha.104.508457

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