Feasibility and reproducibility of left ventricular rotation parameters measured by speckle tracking echocardiography

Dalen, Bas van; Soliman, Osama Ibrahim Ibrahim; Vletter, Wim B.; Kauer, Floris; Zwaan, Heleen van der; Cate, Folkert J. ten; Geleijnse, Marcel L.

doi:10.1093/ejechocard/jep036

Cited by 71 publications

(55 citation statements)

References 17 publications

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“…A P value b.05 was considered statistically significant. Intraobserver and interobserver variability for LV twist in our center are 6% ±6% and 9% ± 5%, respectively [15].…”

Section: Discussionmentioning

confidence: 75%

Left ventricular twist and untwist in aortic stenosis

Dalen

Tzikas

Soliman

et al. 2011

International Journal of Cardiology

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“…A P value b.05 was considered statistically significant. Intraobserver and interobserver variability for LV twist in our center are 6% ±6% and 9% ± 5%, respectively [15].…”

Section: Discussionmentioning

confidence: 75%

Left ventricular twist and untwist in aortic stenosis

Dalen

Tzikas

Soliman

et al. 2011

International Journal of Cardiology

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“…A P value Ͻ 0.05 was considered statistically significant. Intraobserver and interobserver variability for Twist max in our center are 6 Ϯ 6 and 9 Ϯ 5%, respectively (30).…”

Section: Methodsmentioning

confidence: 74%

Age-related changes in the biomechanics of left ventricular twist measured by speckle tracking echocardiography

Dalen¹,

Soliman²,

Vletter³

et al. 2008

American Journal of Physiology-Heart and Circulatory Physiology

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The increasing number and proportion of aged individuals in the population warrants knowledge of normal physiological changes of left ventricular (LV) biomechanics with advancing age. LV twist describes the instantaneous circumferential motion of the apex with respect to the base of the heart and has an important role in LV ejection and filling. This study sought to investigate the biomechanics behind age-related changes in LV twist by determining a broad spectrum of LV rotation parameters in different age groups, using speckle tracking echocardiography (STE). The final study population consisted of 61 healthy volunteers (16-35 yr, n=25; 36-55 yr, n=23; 56-75 yr, n=13; 31 men). LV peak systolic rotation during the isovolumic contraction phase (Rot(early)), LV peak systolic rotation during ejection (Rot(max)), instantaneous LV peak systolic twist (Twist(max)), the time to Rot(early), Rot(max), and Twist(max), and rotational deformation delay (defined as the difference of time to basal Rot(max) and apical Rot(max)) were determined by STE using QLAB Advanced Quantification Software (version 6.0; Philips, Best, The Netherlands). With increasing age, apical Rot(max) (P<0.05), time to apical Rot(max) (P<0.01), and Twist(max) (P<0.01) increased, whereas basal Rot(early) (P<0.001), time to basal Rot(early) (P<0.01), and rotational deformation delay (P<0.05) decreased. Rotational deformation delay was significantly correlated to Twist(max) (R(2)=0.20, P<0.05). In conclusion, Twist(max) increased with aging, resulting from both increased apical Rot(max) and decreased rotational deformation delay between the apex and the base of the LV. This may explain the preservation of LV ejection fraction in the elderly.

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“…The method of tracking endocardial and epicardial points showed repeatability of endocardial and epicardial twist, i.e., 1.11° and 1.31°, respectively. Van Dalen et al [28] reported repeatability of twist by speckle tracking on a Philips iE33 machine 2.3. They also had good interobserver reproducibility, with the conclusion that studying changes in LV rotation over time is possible.…”

Section: Discussionmentioning

confidence: 99%

Torsion Mechanics as an Indicator of More Advanced Left Ventricular Systolic Dysfunction in Secondary Mitral Regurgitation in Patients with Dilated Cardiomyopathy: A 2D Speckle-Tracking Analysis

Spasova¹,

Borizanova²,

Goudev³

2018

Cardiology

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Left ventricular (LV) twist serves as a compensatory mechanism in systolic dysfunction and its degree of reduction may reflect a more advanced stage of disease. Aim: The aim was to investigate twist alterations depending on the degree of functional mitral regurgitation (MR) by speckle-tracking echocardiography. Methods: Sixty-three patients with symptomatic dilated cardiomyopathy (DCM) were included. Patients were divided according to MR vena contracta width (VCW): group 1 with VCW <7 mm (mild/moderate MR) and group 2 with VCW ≥7 mm (severe MR). Results: There were no differences in LV geometry and function between groups. Group 2 showed lower endocardial basal rotation (BR) (–2.04° ± 1.83° vs. –3.23° ± 1.83°, p = 0.012); epicardial BR (–1.54° ± 1.18° vs. –2.31° ± 1.22°, p = 0.015); endocardial torsion (0.41°/cm ± 0.36°/cm vs. 0.63°/cm ± 0.44°/cm, p = 0.033) and mid-level circumferential strain (CSmid) (–6.12% ± 2.64% vs. –7.75% ± 2.90%, p = 0.028), when compared with group 1. Multivariable linear regression analysis identified endocardial BR, torsion and CSmid, as the best predictors of larger VCW. In the ROC curve analysis, endocardial BR and CSmid values greater than or equal to –3.63° and –9.35%, respectively, can differentiate patients with severe MR. Conclusions: In DCM patients, torsional profile was more altered in severe MR. Endocardial BR, endocardial torsion, and CSmid, can be used as indicators of advanced structural wall architecture damage.

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Feasibility and reproducibility of left ventricular rotation parameters measured by speckle tracking echocardiography

Cited by 71 publications

References 17 publications

Left ventricular twist and untwist in aortic stenosis

Left ventricular twist and untwist in aortic stenosis

Age-related changes in the biomechanics of left ventricular twist measured by speckle tracking echocardiography

Torsion Mechanics as an Indicator of More Advanced Left Ventricular Systolic Dysfunction in Secondary Mitral Regurgitation in Patients with Dilated Cardiomyopathy: A 2D Speckle-Tracking Analysis

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