Left Ventricular Tei Index in Children: Comparison of Tissue Doppler Imaging, Pulsed Wave Doppler, and M-Mode Echocardiography Normal Values

Cui, Wei; Roberson, David A.

doi:10.1016/j.echo.2006.06.006

Cited by 88 publications

(66 citation statements)

References 16 publications

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“…[25][26][27] Moreover, TDI time intervals correlate well with pulsed Doppler blood flow intervals in children. 28,29 However, there was poor agreement between time intervals and the S:D ratio measured by M-mode versus TDI in the DCM population, which may result from the local versus global nature of the measurements, different frame rates, perhaps different subintervals included in the systolic period, and other factors. Likewise, the BlandAltman plot of diastolic duration suggests that the difference between TDI and M-mode decreases as the average increases, and that for the S:D ratio increases with increasing S:D magnitude.…”

Section: Measurement Of S:d Ratio From Tdimentioning

confidence: 99%

Prognostic Implications of the Systolic to Diastolic Duration Ratio in Children With Idiopathic or Familial Dilated Cardiomyopathy

Mondal

Slorach

Manlhiot

et al. 2014

Circ: Cardiovascular Imaging

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All children, 0 to 18 years of age, registered in the pediatric heart failure database with a diagnosis of idiopathic, genetic, or familial DCM and who received their initial echocardiogram at our institution Background-Childhood dilated cardiomyopathy (DCM) carries high morbidity and mortality. The echocardiographic systolic to diastolic (S:D) duration ratio, an indicator of global cardiac performance, is elevated in DCM; however, its prognostic implications have not been investigated in this population. Methods and Results-We investigated systolic and diastolic durations and the resultant S:D ratio using pulsed tissue Doppler imaging in children with idiopathic or familial DCM. We studied serial echocardiograms from presentation until the last follow-up echo. Results were compared with heart rate-matched controls and between DCM subgroups based on an acute or insidious presentation. The association between S:D ratio and death or need for transplant was analyzed. All analyses were adjusted for repeated measures per patient. We studied 200 serial echocardiograms of 48 children with DCM (7.0±6.0 years) and 25 controls. Adjusted for repeated measures through a compound symmetry covariance structure, the S:D ratio was higher in DCM patients (−0.425 [0.072]; P<0.001) because of shortened diastole. A S:D ratio >1.2 at presentation and on serial evaluation was associated with a hazard ratio of 10.5 (95% confidence interval, 3.9-27.8; P<0.001) for death or transplant. In combined multivariable analysis, a S:D ratio >1.2 remained significantly associated with hazard of death/transplant (hazard ratio, 9.1; P=0.04) after adjustment for ejection fraction (hazard ratio: 2.2 per −10%; P<0.001). Conclusions-A high S:D ratio is associated with increased risk for death or need for transplant in children with DCM across the spectrum of heart rates and may be a useful prognostic index for serial evaluation of children with DCM.(Circ Cardiovasc Imaging. 2014;7:773-780.)

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Section: Measurement Of S:d Ratio From Tdimentioning

confidence: 99%

Prognostic Implications of the Systolic to Diastolic Duration Ratio in Children With Idiopathic or Familial Dilated Cardiomyopathy

Mondal

Slorach

Manlhiot

et al. 2014

Circ: Cardiovascular Imaging

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“…All flow measures were indexed on weight. The left ventricular myocardial performance (Tei) index was calculated from an M-mode view as described (16,17). The patency of, and flow direction across the ductus arteriosus and atrial septum were also assessed, as described (18).…”

Section: Echocardiographymentioning

confidence: 99%

Preferential Cephalic Redistribution of Left Ventricular Cardiac Output during Therapeutic Hypothermia for Perinatal Hypoxic-Ischemic Encephalopathy

Hochwald

Jabr

Osiovich

et al. 2014

The Journal of Pediatrics

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Objective-To determine the relationship between left ventricular cardiac output (LVCO), superior vena cava (SVC) flow, and brain injury during whole-body therapeutic hypothermia.Study design-Sixteen newborns with moderate or severe hypoxic-ischemic encephalopathy were studied using echocardiography during and immediately after therapeutic hypothermia. Measures were also compared with 12 healthy newborns of similar postnatal age. Newborns undergoing therapeutic hypothermia also had a cerebral magnetic resonance imaging as part of routine clinical care on postnatal day 3-4.Results-LVCO was markedly reduced (mean+/−SD: 126+/−38 mL/kg/min) during therapeutic hypothermia, whereas SVC flow was maintained within expected normal values (88+/− 27 mL/kg/ min) such that it represented 70% of the LVCO. The reduction in LVCO during therapeutic hypothermia was mainly accounted by a reduction in heart rate (99 +/− 13 BPM versus 123 +/− 17 BPM; p<0.001) compared to immediately post-warming, in the context of myocardial dysfunction. Neonates with documented brain injury on MRI showed higher SVC flow pre-rewarming, compared to newborns without brain injury (p=0.013).Conclusion-Newborns with perinatal hypoxic-ischemic encephalopathy showed a preferential systemic-to cerebral redistribution of cardiac blood flow during whole-body therapeutic hypothermia, which may reflect a lack of cerebral vascular adaptation in newborns with more severe brain injury.

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“…An earlier study found that Tei indices, calculated from PD and TDI measurements, correlated well with invasive measurements of global cardiac performance (5), and in pediatric patients, there was a close correlation between left ventricular Tei indices, as calculated from both sets of measurements (6). Despite changes in load and heart rate, the Tei index is a good indicator of global myocardial heart function in healthy and diseased newborns and fetuses.…”

Section: Discussionmentioning

confidence: 81%

Evaluation of Pulsed doppler-versus Tissue doppler-derived Tei Index of Right and Left ventricle in Fetuses

Amoozgar

Soltani²,

Borzoee³

et al. 2011

Int Cardiovasc Res J

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The result may be implicated in echocardiographic evaluation of neonates by prenatologist and pediatric cardiologist. Background:The myocardial performance index (MPI), also known as the Tei index, was introduced by Tei et al. to evaluate cardiac function in adults with dilated cardiomyopathy. This index is defined as the sum of isovolumic contraction time (ICT) and isovolumic relaxation time (IRT), divided by ejection time (ET). Objectives: To determine the correlation between pulsed Doppler (PD)-and tissue Doppler imaging (TDI)-derived Tei indices in fetuses.Patients and Methods: Right and left ventricle PD and TDI echocardiographic data were obtained from 59 fetuses (11 pregnant women who were positive for anti-SSA-Ro or anti-SSB-La antibodies, 18 women who were referred due to dysrhythmia, and 30 women who had normal clinical findings). Results: Mean fetal gestational age was 27 ± 6.4 weeks. Mean PD Tei index of the mitral and tricuspid valve was 0.58 ± 0.05 and 0.53 ± 0.08, respectively. Mean TDI indices for the mitral and tricuspid valve were 0.56 ± 0.09 and 0.55 ± 0.08, respectively. There were no significant differences between mitral and tricuspid PD-and TDI-derived Tei indices (P = 0.87, P= 0.21), but the Bland-Altman diagrams showed no fine agreement between the indices (the mean difference ± 1 standard deviation of the right ventricular PD-and TDI-derived Tei indices was 0.24 ± 0.02 and 0.29 ± 0.04 for the left ventricle). There were no significant differences in PD-and TDI-derived Tei indexes between groups of evaluated fetuses (Mitral valve: PD-Tei P=0.69, TDI-Tei P=0.49; Tricuspid valve: PD-Tei P=0.41, TDI-Tei P=0.36). Conclusions: Although the mean values of the two indices did not differ significantly, the TDI-derived and PD-derived Tei indices did not have fine agreement.

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Left Ventricular Tei Index in Children: Comparison of Tissue Doppler Imaging, Pulsed Wave Doppler, and M-Mode Echocardiography Normal Values

Cited by 88 publications

References 16 publications

Prognostic Implications of the Systolic to Diastolic Duration Ratio in Children With Idiopathic or Familial Dilated Cardiomyopathy

Prognostic Implications of the Systolic to Diastolic Duration Ratio in Children With Idiopathic or Familial Dilated Cardiomyopathy

Preferential Cephalic Redistribution of Left Ventricular Cardiac Output during Therapeutic Hypothermia for Perinatal Hypoxic-Ischemic Encephalopathy

Evaluation of Pulsed doppler-versus Tissue doppler-derived Tei Index of Right and Left ventricle in Fetuses

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