Assessment of Regional Longitudinal Myocardial Strain Rate Derived from Doppler Myocardial Imaging Indexes in Normal and Infarcted Myocardium

Voigt, Jens‐Uwe; Arnold, Martina; Karlsson, Matts; Hübbert, Laila; Kukulski, Tomasz; Hatle, Liv; Sutherland, George R.

doi:10.1067/mje.2000.105631

Cited by 185 publications

(102 citation statements)

References 17 publications

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“…It has been suggested that the PSSR increases with increased age (6). PSSR have been found higher in fetuses (15) (left, septum and right Ϫ2.1/s), children (6) (left/septum Ϫ2.0/s, right Ϫ2.1/s), and lower in adults (16) (left/septum Ϫ1.27/s) than in this study (Ϫ1.78/s). Again, the differences between neonates, children, and adults are noticeable.…”

Section: Discussioncontrasting

confidence: 51%

Tissue Doppler Derived Longitudinal Strain and Strain Rate During the First 3 Days of Life in Healthy Term Neonates

et al. 2009

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Tissue Doppler derived longitudinal strain and strain rate were studied in 48 healthy term neonates by measuring peak systolic strain (PSS) and peak systolic strain rate (PSSR) in 18 heart segments on day 1-3 of life. The mean PSS for each examination was Ϫ21.8% (Ϫ22.1, Ϫ21.4) ͓mean (95%CI)͔, and the mean PSSR was Ϫ1.78/s (Ϫ1.81, Ϫ1.74). Age (d), fetal shunts, and heart rate had negligible impact on measurements for any segment. The fractional shortening had negligible impact on septum and left heart segments and the pulmonary artery pressure had no impact on the right heart segments. Values varied significantly between segments and individuals, and were lower (closer to zero) in images of low quality than in images of high quality (p Ͻ 0.05). Both apical and basal segments values were lower in the septum and higher in the right ventricle than in the left ventricle (p Ͻ 0.05), except for no difference between the basal left and right segments PSSR. Apical segments values were higher than basal segments values in the right ventricle (p Ͻ 0.05) but not in the septum or the left ventricle. At present, PSS and PSSR are more feasible for quantifying differences between segment groups and patient groups than between individuals and segments within individuals. Strain describes the relative change in heart segment length and strain rate is strain per time unit. Data on strain and strain rate measurements in neonates are scarce. We have previously found strain and strain rate by tissue Doppler feasible and reliable in neonates (2). Little is known about changes in myocardial function during the first days of life, when the hemodynamic circulatory system changes from two parallel to one serial circuit, the gas exchange is transferred from the placenta to the lungs and the fetal shunts are gradually closed (3). Strain and strain rate measurements could provide new knowledge about the myocardial function during these changes, and also serve as a reference for studies of the heart function in pathologic states during this period.The aim of the present study was to investigate myocardial contraction in healthy term neonates by measuring longitudinal peak systolic strain (PSS) and strain rate (PSSR) in the first 3 days of life and assess the impact of age, fetal shunts, image quality, and different heart regions. METHODSSubjects. Forty-eight healthy term neonates from the maternity ward at Ullevål University Hospital were examined on the first, second, and third day of life (March-May 2005) ( Table 1). One neonate had an apical ventricular septum defect. The measurements from this neonate were not excluded because the defect was without hemodynamic significance and lied outside the myocardial region used in the analyses. All other neonates had structurally normal hearts.The project was approved by the Regional Committee for Medical Research Ethics and by the scientific committee at Ullevål University Hospital. Written informed parental consent was obtained.Measurements. To minimize noise in the analyses, a 2.4 MHz p...

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Section: Discussioncontrasting

confidence: 51%

Tissue Doppler Derived Longitudinal Strain and Strain Rate During the First 3 Days of Life in Healthy Term Neonates

et al. 2009

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“…4,5,16 The SRI data were processed from the TDI data. 17 During data acquisition, to ensure the best-quality data, the narrowest image sector angle possible was used, with the lowest possible depth, to maintain the highest possible frame rate, typically Ͼ140 frames/s. The angle between the Doppler beam and the wall was keep at Ͻ30°.…”

Section: Echocardiographymentioning

confidence: 99%

Tissue doppler imaging is superior to strain rate imaging and postsystolic shortening in the prediction of reverse remodeling in both ischemic and nonischemic heart failure after cardiac resynchronization therapy

Yu¹,

Fung²,

Zhang³

2004

ACC Current Journal Review

168

291

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Background-A number of noninvasive techniques have been used to predict the effectiveness of cardiac resynchronization therapy (CRT) in heart failure patients, in particular left ventricular (LV) reverse remodeling. This study compared the relative predictive values of tissue Doppler imaging (TDI) and strain-rate imaging (SRI) parameters for LV reverse remodeling in patients who received CRT and examined for potential differences in ischemic (nϭ22) and nonischemic (nϭ32) heart failure. Methods and Results-TDI and SRI were performed at baseline and 3-month follow-up. Eighteen parameters of intraventricular and interventricular asynchrony based on the time to peak myocardial contraction (Ts) and time to peak strain rate (Tsr) were compared, along with postsystolic shortening (PSS). Reverse remodeling with reduction of LV end-diastolic and end-systolic volumes and gain in ejection fraction (all PϽ0.001) was observed in the whole study population. The standard deviation of Ts of 12 LV segments (Ts-SD) is the most powerful predictor of reverse remodeling in both the ischemic (rϭϪ0.65, PϽ0.001) and nonischemic (rϭϪ0.79, PϽ0.001) groups. The PSS of 12 LV segments was a good predictor only for the nonischemic (rϭϪ0.64, PϽ0.001) but not the ischemic (rϭ0.32, PϭNS) group. However, parameters of SRI and interventricular asynchrony failed to predict reverse remodeling. By multiple regression analysis, independent parameters included Ts-SD in both groups (PϽ0.005) and PSS of 12 LV segments in the nonischemic group (Pϭ0.03). The area of the receiver operating characteristic curve was largest for Ts-SD (0.94; CIϭ0.88 to 1.00). Conclusions-Ts-SD is the most powerful predictor of LV reverse remodeling and was consistently useful for ischemic and nonischemic heart failure. However, PSS is useful only for nonischemic pathogenesis, whereas the role of SRI parameters was not supported by the present study.

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“…15 Furthermore, several reports have demonstrated the potential clinical value of this technique in the quantitative assessment of regional myocardial asynergy. 16,17 On the basis of these preliminary findings, we postulated that strain rate and strain could quantify the changes in regional myocardial function during inotropic stimulation.…”

mentioning

confidence: 99%

Noninvasive Quantification of the Contractile Reserve of Stunned Myocardium by Ultrasonic Strain Rate and Strain

et al. 2001

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Background-We sought to investigate ultrasonic strain rate and strain as new indices to quantify the contractile reserve of stunned myocardium during dobutamine infusion. Methods and Results-Stunning of the left ventricular posterior wall was induced in 9 closed-chest pigs after 30 minutes of severe hypoperfusion followed by 60 minutes of reperfusion of the left circumflex coronary artery territory. A second group of 7 animals had no coronary occlusion and served as normal controls. An incremental dobutamine infusion protocol was used in both groups. Changes in regional radial function were monitored by use of ultrasound-derived maximal systolic radial strain rate (SR) and systolic strain (⑀). In the control group, dobutamine induced an increase in both SR and maximal dP/dt, which correlated linearly (rϭ0.85). Conversely, ⑀ values increased at low doses of dobutamine (2.5 to 5 g · kg Ϫ1 · min

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Assessment of Regional Longitudinal Myocardial Strain Rate Derived from Doppler Myocardial Imaging Indexes in Normal and Infarcted Myocardium

Cited by 185 publications

References 17 publications

Tissue Doppler Derived Longitudinal Strain and Strain Rate During the First 3 Days of Life in Healthy Term Neonates

Tissue Doppler Derived Longitudinal Strain and Strain Rate During the First 3 Days of Life in Healthy Term Neonates

Tissue doppler imaging is superior to strain rate imaging and postsystolic shortening in the prediction of reverse remodeling in both ischemic and nonischemic heart failure after cardiac resynchronization therapy

Noninvasive Quantification of the Contractile Reserve of Stunned Myocardium by Ultrasonic Strain Rate and Strain

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