Second Trimester Ultrasound: Reference Values for Two-Dimensional Speckle Tracking–Derived Longitudinal Strain, Strain Rate and Time to Peak Deformation of the Fetal Heart

2012 ◽  
Vol 25 (12) ◽  
pp. 1333-1341 ◽  
Author(s):  
Livia Kapusta ◽  
Gur Mainzer ◽  
Zeev Weiner ◽  
Lisa Deutsch ◽  
Asaad Khoury ◽  
...  
Keyword(s):  
Strain Rate ◽  
Reference Values ◽  
Speckle Tracking ◽  
Longitudinal Strain ◽  
Fetal Heart ◽  
Two Dimensional ◽  
Second Trimester ◽  
Time To Peak

Abstract 14760: Right Ventricular Function in Preterm Neonates: Reference Values for Longitudinal Strain by Two-dimensional Speckle Tracking Echocardiography From Birth to One Year of Life

Circulation ◽  
2015 ◽  
Vol 132 (suppl_3) ◽  
Author(s):  
Philip T Levy ◽  
Meghna D Patel ◽  
Mark R Holland ◽  
Timothy J Sekarski ◽  
Amit Mathur ◽  
...  
Keyword(s):  
Preterm Infants ◽  
Premature Infants ◽  
Reference Values ◽  
Speckle Tracking ◽  
Longitudinal Strain ◽  
Speckle Tracking Echocardiography ◽  
Systolic Function ◽  
Free Wall ◽  
Two Dimensional ◽  
One Year

Introduction: Right ventricle (RV) systolic function is an important determinant of cardiopulmonary outcomes in premature infants. Two-dimensional speckle tracking echocardiography (2DSTE) derived myocardial strain is a reliable measure of RV systolic function in premature infants, but lacks reference values for clinical application in premature infants. We aimed to determine the maturational (age- and weight- related) changes in RV strain to establish reference values in preterm infants from birth to one year corrected age (CA). Methods: RV peak global longitudinal strain (pGLS) and RV free wall longitudinal strain (FWLS) were measured in a prospective longitudinal study in 115 preterm infants (< 29 weeks at birth) at 24 and 72 hours of age (HOA), 32 and 36 weeks postmenstrual age (PMA), and one year (CA) by 2DTSE (GE EchoPac) from a RV-focus apical 4-chamber view using a validated protocol. Premature infants that developed chronic lung disease or had a hemodynamically significant PDA were excluded (n=65) from analysis for the reference values. Results: RV pGLS ranged from -16% at birth to -26% by one year CA and RV FWLS ranged from -18% at birth to -27% to one year CA in healthy preterm infants. RV pGLS and FWLS strain correlated with increasing weight (r=0.87, p < 0.001), PMA in weeks (r=0.85, p < 0.001; r=0.83, p < 0.001), but were independent of gestational age at birth (r=0.4, p=0.38; r=0.3, p=0.5). RV strain was significantly lower in preterm infants with bronchopulmonary dysplasia (p=0.004) at 32 and 36 weeks PMA, and one year CA (Figure). RV strain was independent of gender or need for mechanical ventilation. Conclusions: This study establishes reference values of RV global and free wall longitudinal strain and tracks their postnatal maturational changes in preterm infants. These measures increase from birth to one year CA and are linearly associated with increasing weight reflecting the postnatal cardiac growth as a contributor to the maturation of RV function.

Reference Values of Right Atrial Longitudinal Strain Imaging by Two-Dimensional Speckle Tracking

2011 ◽  
Vol 29 (2) ◽  
pp. 147-152 ◽  
Author(s):  
Margherita Padeletti ◽  
Matteo Cameli ◽  
Matteo Lisi ◽  
Angela Malandrino ◽  
Valerio Zacà ◽  
...  
Keyword(s):  
Reference Values ◽  
Speckle Tracking ◽  
Longitudinal Strain ◽  
Strain Imaging ◽  
Right Atrial ◽  
Two Dimensional

Longitudinal strain and strain rate by two-dimensional speckle tracking in non-sedated healthy cats

2013 ◽  
Vol 95 (3) ◽  
pp. 1175-1180 ◽  
Author(s):  
A.C. Silva ◽  
R.A.L. Muzzi ◽  
G. Oberlender ◽  
R.B. Nogueira ◽  
L.A.L. Muzzi ◽  
...  
Keyword(s):  
Strain Rate ◽  
Speckle Tracking ◽  
Longitudinal Strain ◽  
Two Dimensional ◽  
Strain And Strain Rate

Synchronicity of systolic deformation in healthy pediatric and young adult subjects: a two-dimensional strain echocardiography study

2012 ◽  
Vol 302 (1) ◽  
pp. H196-H205 ◽  
Author(s):  
Karen A. Marcus ◽  
Jan Janoušek ◽  
Marlieke E. Barends ◽  
Gert Weijers ◽  
Chris L. de Korte ◽  
...  
Keyword(s):  
Heart Rate ◽  
Young Adult ◽  
Reference Values ◽  
Speckle Tracking ◽  
Left Ventricular ◽  
Cardiac Resynchronization ◽  
Detailed Knowledge ◽  
Healthy Children ◽  
Two Dimensional ◽  
Time To Peak

Two-dimensional speckle tracking echocardiography (2DSTE) offers valuable information in the echocardiographic assessment of ventricular myocardial function. It enables the quantification and timing of systolic ventricular myocardial deformation. In addition, 2DSTE can be used to identify mechanical dyssynchrony, which is an important parameter in predicting the response to cardiac resynchronization therapy for heart failure. Detailed knowledge of normal timing of systolic deformation and its degree of synchronicity in children is lacking. We aimed to establish the normal timing of left ventricular myocardial systolic deformation using 2DSTE in a large cohort of healthy children and young adults. Transthoracic echocardiograms were acquired in 195 healthy subjects (139 children and 56 young adult <40 yr of age) and were retrospectively analyzed. Time to peak systolic longitudinal, circumferential, and radial strain was determined by means of speckle tracking. Strong, statistically significant relations between age as well as various anthropometric variables (e.g., heart rate) and timing of systolic deformation ( P < 0.0001) were present. The extent of dyssynchronous deformation increased with age. This is the first report that establishes reference values per cardiac segment for time to peak systolic myocardial strain values in all three directions assessed with 2DSTE in a large pediatric and young adult cohort. We emphasize the need for using age-specific reference values as well as heart rate correction for the adequate interpretation of 2DSTE measurements.

scholarly journals Feasibility and reference values of left atrial longitudinal strain imaging by two-dimensional speckle tracking

2009 ◽  
Vol 7 (1) ◽  
Author(s):  
Matteo Cameli ◽  
Maria Caputo ◽  
Sergio Mondillo ◽  
Piercarlo Ballo ◽  
Elisabetta Palmerini ◽  
...  
Keyword(s):  
Reference Values ◽  
Left Atrial ◽  
Speckle Tracking ◽  
Longitudinal Strain ◽  
Strain Imaging ◽  
Two Dimensional

P4378Comparison between left bundle branch pacing and His bundle pacing using two-dimensional speckle tracking echocardiography

2019 ◽  
Vol 40 (Supplement_1) ◽  
Author(s):  
Y F Cheng ◽  
H Y Chen ◽  
M R Zhu ◽  
X Y Chen ◽  
Y G Su ◽  
...  
Keyword(s):  
Speckle Tracking ◽  
Longitudinal Strain ◽  
Speckle Tracking Echocardiography ◽  
Lateral Wall ◽  
Left Ventricular ◽  
Free Wall ◽  
Two Dimensional ◽  
His Bundle ◽  
Time To Peak ◽  
Male Patients

Abstract Background Although his bundle pacing (HBP) can achieve physiological electrical activation of the ventricles, its clinical use is limited by lower success rates, high and unstable pacing thresholds and loss of capture. Left bundle branch pacing (LBBP) has been proved to be able to correct Left bundle branch block (LBBB) and generate a narrower QRS duration than conventional RV pacing. However, its effects on ventricular synchronism and contraction function remains unknown. The current study is aimed to compare the echocardiographic characteristics between HBP and LBBP, and to explore whether LBBP leads to a comparable cardiac synchrony and deformation in comparison with HBP. Methods Forty-six pacing-indicated patients were prospectively enrolled. Twenty-nine patients underwent LBBP (17 male patients, mean age 69.6±13.7yrs, the LBBP group) and 17 patients underwent HBP (13 male patients, mean age 70.4±14.7yrs, the HBP group). LBBP was achieved by trans-septal method in the basal ventricular septum. Left ventricular end diastolic volume (LVEDV), left ventricular end systolic volume (LVESV), left ventricular ejection fraction (LVEF), and tricuspid annulus plane systolic excursion (TAPSE) were obtained. Strains and time to peak strains of right ventricular free wall and 16 left ventricle segments were analyzed using two-dimensional speckle tracking echocardiography (2D STE). The standard deviation of time to peak strains of 16 left ventricular segments was calculated as PSD. Results Compared to the baseline, time to peak longitudinal strain (TTPS) of apical septum, apical lateral wall were shortened after 6 months of HBP, while they didn't change significantly after 6 months of LBBP. After pacemaker implantation, the LBBP group had a delayed TTPS of apical septum, apical lateral wall and basal RV free wall than the HBP group (LBBP vs. HBP: apical septum,358.44±61.98ms vs. 296.43±29.47ms; apical lateral wall, 373.11±55.80ms vs. 299.00±83.45ms; basal RV free wall, 404.31±72.93ms vs. 334.50±39.95ms, all p<0.05).However, PSD was comparable between the two groups (p>0.05). Compared to the baseline, global left ventricular longitudinal strain (LVGLS) and longitudinal strain of RV free wall (RVLS) were deteriorated after 6 months of HBP, while they were preserved in the LBBP group. After 6-month pacing, LVGLS and RVLS were significantly stronger in the LBBP group than those in the HBP group. (LVGLS, −16.10±3.75% vs. −13.18±4.11%; RVLS, −17.50±5.46% vs. −13.70±4.35%, both p<0.05). Conclusion Patients received LBBP had a comparable left ventricular synchronism and a better myocardial contraction compared to patients with HBP. LBBP may be a promising alternative pacing strategy. Two-dimensional STE is more sensitive than conventional echocardiography in assessing cardiac synchrony and segmental deformation.

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