Comparison of the right ventricular Tei index by tissue Doppler imaging to that obtained by pulsed Doppler in children without heart disease

Harada, Kenji; Tamura, Masazumi; Toyono, Manatomo; Yasuoka, Kenji

doi:10.1016/s0002-9149(02)02541-9

Cited by 142 publications

(112 citation statements)

References 19 publications

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“…Furthermore, a variation in cardiac frequency between different cardiac cycles could distort IVRT and IVCT assessment. With the use of DTI, measurements of IVRT and Tei index on the lateral part of the tricuspid annulus appeared more convenient (11). Our results showed a significant increase of IVRT in the severe-PHT group.…”

Section: Discussionmentioning

confidence: 65%

“…Doppler tissue imaging (DTI) is an ultrasound technique that provides assessment of contracting myocardium by measuring endocardial velocities (8). Interestingly, the Tei index can be measured using DTI, which allows simultaneous recording of systolic and diastolic functions (11). Typically, DTI recording is composed of a systolic (S) wave, an early diastolic (Ea) wave, and an atrial (Aa) wave (8,10).…”

mentioning

confidence: 99%

“…Typically, DTI recording is composed of a systolic (S) wave, an early diastolic (Ea) wave, and an atrial (Aa) wave (8,10). When DTI is performed on the tricuspid annulus, it allows the evaluation of the RV systolic and diastolic functions (6,19,31) as well as the Tei index (11).…”

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confidence: 99%

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Doppler tissue imaging in assessment of pulmonary hypertension-induced right ventricle dysfunction

Boissière¹,

Gautier²,

Machet³

et al. 2005

American Journal of Physiology-Heart and Circulatory Physiology

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-We aimed to assess the accuracy of Doppler tissue imaging (DTI) in detecting right ventricle (RV) dysfunction and electromechanical coupling alteration following pulmonary hypertension (PHT) in rat. PHT was induced by chronic hypoxia exposure (hypoxic PHT) or monocrotaline treatment (monocrotaline PHT). In both PHT models, we observed transparietal RV pressure increase and remodeling, including hypertrophy and dilation. Conventional echocardiography provided evidence for pulmonary outflow impairment with midsystolic notch and acceleration time decrease in PHT groups (21.7 Ϯ 1.6 and 13.2 Ϯ 2.9 ms in hypoxic and monocrotaline PHT groups vs. 28.1 Ϯ 1.0 ms in control). RV shortening fraction was decreased in the monocrotaline PHT group compared with the hypoxic PHT and control groups. Combining conventional Doppler and DTI was more helpful to detect RV diastolic dysfunction in the monocrotaline PHT group (E/Ea ratio ϭ 17.0 Ϯ 1.4) compared with the hypoxic PHT and control groups (11.5 Ϯ 0.7 and 10.2 Ϯ 0.4, respectively). Tei index measured using DTI highlighted global RV dysfunction in the monocrotaline PHT group (1.36 Ϯ 0.24 vs. 0.92 Ϯ 0.05 and 0.86 Ϯ 0.05 in the hypoxic PHT and control groups, respectively). Q-S m time measured from the onset of Q wave to the onset of DTI S m wave was increased in both PHT groups. PHT-induced electromechanical coupling alteration was confirmed by in vitro activation-contraction delay measurements on isolated RV papillary muscle, and both Q-S m time and activation-contraction delay were correlated with PHT severity. We demonstrated that Q-Sm time measured in DTI was an easily and convenient index to detect early RV electromechanical coupling alteration in both moderate and severe PHT. echocardiography; hypertrophy; right ventricular remodeling CHRONIC ALVEOLAR HYPOXIA, which often occurs in patients suffering from chronic obstructive pulmonary diseases, secondarily induces a sustained increase in pulmonary artery resistance. The subsequent pulmonary artery hypertension (PHT) leads to right ventricle (RV) pressure overload and hypertrophy (22).Conventional transthoracic echocardiography is widely used to detect PHT in humans and animal models (14, 18). The standard parameters are the RV free wall thickening recorded in time-motion (TM) mode, the presence of mild-systolic notch, and the acceleration time decrease in the pulmonary outflow spectrum recorded in pulsed-Doppler mode. Nevertheless, a more extensive assessment of PHT-induced RV dysfunction remains difficult using conventional echocardiography. Indeed, accuracy of RV systolic and diastolic functions assessment is limited by complex anatomy and geometry of the ventricle.The Tei index, which combines both systolic and diastolic parameters, was suggested to determine global myocardial performance (27). It has been used in the assessment of RV dysfunction, especially in PHT (26). In conventional pulsed Doppler, the Tei index derives from both isovolumic contraction and relaxation times (IVCT and IVRT) as well as ejection time of...

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Section: Discussionmentioning

confidence: 65%

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confidence: 99%

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Doppler tissue imaging in assessment of pulmonary hypertension-induced right ventricle dysfunction

Boissière¹,

Gautier²,

Machet³

et al. 2005

American Journal of Physiology-Heart and Circulatory Physiology

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“…Normal values in healthy neonates range from 0.25 to 0.38. 23 It is relatively independent of age and also has a low degree of inter and intra observer variability. 24 Hemodynamic assessment of a PDA and clinical relevance Prior to echocardiography, the diagnosis of PDA was reliant on the evolution of clinical signs including: a murmur, increased precordial activity, widened pulse pressure and bounding peripheral pulses.…”

Section: Diastolic Performancementioning

confidence: 99%

Current Application of Functional/Targeted Echocardiogram in NICU: An Update

Rima

Mamun

2017

Cardiovasc. j.

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Functional echocardiograph is the bedside use of cardiac ultrasound to monitor functional and hemodynamic changes longitudinally. It can assist in an understanding of pathophysiology of the rapidly changing neonatal hemodynamic status including cardiac function and systemic and pulmonary blood flow in critically ill preterm and term neonates. It also facilitates the evaluation of response to therapeutic intervention. This review examines the potential applications of functional echocardiography in different disease states, and how the technology may be introduced safely in the NICU.Cardiovasc. j. 2017; 10(1): 74-83

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“…Measurement of myocardial velocities by tissue Doppler imaging (TDI) is useful for assessing LV and RV function (17,18). Pulsed TDI of the tricuspid annulus is noninvasive and has recently been shown to be a reliable method of assessing RV function compared to the gold standard of magnetic resonance imaging (19). Since diastolic dysfunction starts before systolic dysfunction, early diagnosis of diastolic dysfunction by tissue Doppler echocardiography may be helpful (20,21).…”

Section: Introductionmentioning

confidence: 99%

Relationship between ventricular function assessed by tissue Doppler imaging and exercise capacity in patients after repair of tetralogy of Fallot: an observational study

Şaylan¹,

Çevik²,

Tavli³

2012

Anadolu Kardiyol Derg

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Relationship between ventricular function assessed by tissue Doppler imaging and exercise capacity in patients after repair of tetralogy of Fallot: an observational study ABSTRACTObjective: The present study aims to study the relationship between tissue Doppler echocardiography (TDE) indices of right ventricle and exercise capacity in patients after total correction for tetralogy of Fallot (ToF). Methods: This cross-sectional observational study included 20 patients, after undergoing total correction procedure for ToF diagnosed with mild/moderate pulmonary regurgitation and 30 age-matched healthy children. In the postoperative period, patients were invited to hospital for evaluation of the ventricular functions by 2D, M-mode, Doppler (DE) echocardiography and TDE and exercise testing to evaluate the effort capacity. Statistical analysis was performed using Mann-Whitney U and Chi-square tests, and Pearson correlation analysis. Results: Compared with the controls; the mitral annular peak systolic flow velocity (Sm) value was significantly lower, while isovolumic contraction time (IVCT), isovolumic relaxation time (IVRT) and myocardial performance index (MPI) values obtained at the tricuspid and mitral (MV) valves were significantly higher (p<0.05 for all) in patients after ToF repair. There was a negative correlation between the exercise period and the total correction age (r=-0.20, p=0.015) and the same negative correlation existed between the exercise period and METS (r=-0.25, p=0.010). MV IVCT with DE and TDE was found to be correlated with METS (r=-0.45, p=0.04). Left ventricular MPI was found to be correlated with maximum heart rate (r=-0.20, p=0.03). By DE, tricuspid valve deceleration time and Sm peak flow velocity with TDE were significantly correlated with METS (r=-0.30, p=0.04; r=-025, p=0.005, respectively). MPI calculated with TDE was correlated with maximum heart rate (r=-0.15, p<0.01). Conclusion: Even if patients, undergone total correction surgery for ToF were asymptomatic or had minimal clinical symptoms, MPI index assessed by pulse wave TDE and exercise testing may allow early diagnosis of right ventricle dysfunction. Yöntemler: Enine kesitli-gözlemsel çalışmaya, Fallot Tetralojisi tanısı ile tam düzeltme operasyonu uygulanmış, hafif-orta derecede pulmoner regürjitasyonu olan 20 hasta ile kontrol grubu olarak 30 sağlıklı çocuk dahil edildi. Hastalar, ameliyat sonrası dönemde 2D, M mod, Doppler ekokardiyografi ve doku Doppler ekokardiyografi ile ventrikül fonksiyonları, egzersiz testi ile efor kapasiteleri değerlendirilmek üzere hastaneye çağrılmıştır. İstatistiksel analiz Mann-Whitney U ve Ki-kare testi ve Pearson korelasyon analizi ile yapıldı. Bulgular: Kontrol grubu ile karşılaştırıldığında, Fallot tetralojili hasta grubunda mitral annüler pik sistolik akım hız (Sm) değeri belirgin olarak düşük, triküspit ve mitral (MV) kapaktan elde edilen izovolümik relaksasyon zamanı (IVRT), izovolümik kontraksiyon zamanı (IVCT) ve miyokart performans indeksi (MPI) değerleri daha yüksek idi (tümü için p<0....

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Comparison of the right ventricular Tei index by tissue Doppler imaging to that obtained by pulsed Doppler in children without heart disease

Cited by 142 publications

References 19 publications

Doppler tissue imaging in assessment of pulmonary hypertension-induced right ventricle dysfunction

Doppler tissue imaging in assessment of pulmonary hypertension-induced right ventricle dysfunction

Current Application of Functional/Targeted Echocardiogram in NICU: An Update

Relationship between ventricular function assessed by tissue Doppler imaging and exercise capacity in patients after repair of tetralogy of Fallot: an observational study

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