Effects of Frame Rate on Two-Dimensional Speckle-Tracking-Derived Measurements of Myocardial Deformation in Premature Infants

Sanchez, Aura A.; Levy, Philip; Sekarski, Timothy J.; Hamvas, Aaron; Mark, Holland; Singh, Gautam K.

doi:10.1016/s0735-1097(14)61174-8

Cited by 5 publications

(9 citation statements)

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“…In short-axis images, both circumferential and radial parameters can be calculated for all myocardial segments [42,54,55] . STEderived LV and RV strain demonstrates high clinical feasibility and reproducibility in term and preterm infants with appropriate frame rate:heart rate ratios [8,31,41,44,56] . However, STE (as compared to TDI) employs relatively lower frame rates to derive SR measurements and the assessment of SR parameters in preterm infants using STE currently has lower reproducibility [41] .…”

Section: Deformation Imagingmentioning

confidence: 99%

“…There is an expanding body of literature on strain and SR in term and preterm infants using both cDTI and STE techniques [8,31,44,49,[56][57][58] . Current research is evaluating the ability of ε and SR to characterize the physiological and pathological changes in diseases such hypoxic ischaemic encephalopathy, pulmonary hypertension, li- gation of a patent ductus arteriosus, and chronic lung disease.…”

Section: Deformation Imagingmentioning

confidence: 99%

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Novel Echocardiography Methods in the Functional Assessment of the Newborn Heart

et al. 2016

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Echocardiography in the neonatal intensive care unit has led to improvements in our ability to assess the neonatal heart in health and disease. Advances in neonatal cardiac imaging have provided the capability to obtain quantitative information that often supersedes the qualitative information provided by conventional methods. Novel quantitative measures of function include the assessment of the velocity of muscle tissue movement during systole and diastole using tissue Doppler velocity imaging, and evaluation of deformation and rotational characteristics of the myocardium utilizing speckle tracking echocardiography or tissue Doppler-derived strain imaging. A comprehensive understanding of these novel functional modalities, their predictive value, and limitations can greatly assist in managing both the normal and maladaptive responses in the newborn period. This article discusses the novel and emerging methods for assessment of left and right heart function in the neonatal population.

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Section: Deformation Imagingmentioning

confidence: 99%

Section: Deformation Imagingmentioning

confidence: 99%

Novel Echocardiography Methods in the Functional Assessment of the Newborn Heart

et al. 2016

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“…The images were optimized to illustrate a clear endocardial and epicardial border of the LV walls without artifact, and a frame rate-to-heart rate ratio (FR:HR) between 0.7 and 0.9 was maintained as previously recommended. 17 Rotational mechanics were derived by the same technique described above and by obtaining grayscale images of the LV from the parasternal short-axis views at the level of the mitral valve (to derive basal rotation) and at the level of the apex (to derive apical rotation).…”

Section: Systolic Deformation Parameters and Rotational Mechanicsmentioning

confidence: 99%

Left ventricular rotational mechanics in infants with hypoxic ischemic encephalopathy and preterm infants at 36 weeks postmenstrual age: A comparison with healthy term controls

et al. 2016

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“…9,14,21 Recent work by Sanchez et al identified a frame rate-to-heart rate ratio of 0.7-0.9 produces optimal reproducibility results in premature infants. 1,22 It is possible that improper FR:HR ratios resulted in worse tracking and therefore inferior repeatability of these parameters.…”

Section: Discussionmentioning

confidence: 99%

Circumferential and radial deformation assessment in premature infants: Ready for primetime?

et al. 2019

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Background Speckle tracking echocardiography (STE) is a validated method to measure longitudinal deformation in premature infants, but there is a paucity of data on STE‐derived circumferential and radial strain in this population. We assessed the feasibility and reproducibility of circumferential and radial deformation measurements in premature infants. Methods In a prospective study of 40 premature infants (<29 weeks of gestation at birth), STE‐derived circumferential and radial strain, systolic strain rate (SRs), early diastolic strain rate (SRe), and late diastolic strain rate (SRa) were measured on day 2 and day 8. Intra‐ and inter‐observer reproducibility analysis were performed using Bland–Altman analysis, coefficient of variation (COV), and intra‐class correlation coefficient (ICC). The impact of a persistent patent ductus arteriosus (PDA) was analyzed. Results Deformation analysis was feasible in 98% of the acquisitions. Circumferential parameters demonstrated excellent intra‐ and inter‐observer reproducibility with an ICC between 0.89 and 0.99 (all P < 0.001) and a COV between 4% and 13%. Radial parameters demonstrated acceptable intra‐ and inter‐observer reproducibility with an ICC between 0.73 and 0.96 (all P < 0.001) and a COV between 14% and 27%. Infants with a PDA on day 8 (n = 21, 53%) demonstrated higher radial strain, SRs and SRe. There were no differences in circumferential parameters with a PDA at either time point. Conclusion This study demonstrates clinical feasibility and reproducibility of circumferential and radial strain by STE in premature infants. A PDA elevates radial deformation measures, suggesting that the increased LV preload from a PDA may augment intrinsic contractility in the radial but not circumferential plane.

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Effects of Frame Rate on Two-Dimensional Speckle-Tracking-Derived Measurements of Myocardial Deformation in Premature Infants

Cited by 5 publications

References 0 publications

Novel Echocardiography Methods in the Functional Assessment of the Newborn Heart

Novel Echocardiography Methods in the Functional Assessment of the Newborn Heart

Left ventricular rotational mechanics in infants with hypoxic ischemic encephalopathy and preterm infants at 36 weeks postmenstrual age: A comparison with healthy term controls

Circumferential and radial deformation assessment in premature infants: Ready for primetime?

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