New developments in echocardiographic methods to assess right ventricular function in congenital heart disease

Friedberg, Mark K.; Rosenthal, David N.

doi:10.1097/01.hco.0000154446.65835.08

Cited by 31 publications

(17 citation statements)

References 32 publications

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“…Strain rate represents the rate of local myocardial deformation, and it is usually expressed as SR˙ε/Ƹt [3] . Strain and strain rate are independent of both effects of tethering of adjacent myocardial segments, translation and cardiac rotation [4] . Many recent studies used strain and strain rate to assess regional myocardial deformation with Doppler tissue imaging (DTI) [1] .…”

Section: Discussionmentioning

confidence: 99%

Assessment of right ventricular free wall longitudinal myocardial deformation using speckle tracking imaging in normal subjects

Tong

Song

et al. 2008

J. Huazhong Univ. Sci. Technol. [Med. Sci.]

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To assess right ventricular free wall longitudinal myocardium deformation and examine the changes with normal age by speckle tracking imaging (STI), myocardial systolic peak strain (epsilon), systolic peak strain rate (SRs), early diastolic peak strain rate (SRe), late diastolic peak strain rate (SRa), the ratio of SRe/SRa were measured in the basal, middle and apical segments of right ventricular free wall in 75 healthy volunteers (age range: 21-71 y) by STI from the apical 4-chamber view. RV longitudinal strain and strain rate were highest in the basal segment of the free wall. Older subjects had lower early diastolic strain rate (SRe) than younger subjects, but they had higher late diastolic strain rate (SRa). A negative correlation between age and the ratio of SRe/SRa was found in all RV free wall segments (r=-0.466 - -0.614, P<0.01). It is concluded that RV diastolic strain rate changes with age and STI can be used for the study of RV myocardial deformation.

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Section: Discussionmentioning

confidence: 99%

Assessment of right ventricular free wall longitudinal myocardial deformation using speckle tracking imaging in normal subjects

Tong

Song

et al. 2008

J. Huazhong Univ. Sci. Technol. [Med. Sci.]

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“…However, RV function assessment is rarely performed in infants with PHT, or is limited to qualitative assessment using 2-dimensional echocardiography. Alternative attempts to quantify RV function using ejection fraction and fractional shortening are time consuming and of questionable accuracy due to the RV's complex geometry [16] .…”

Section: Discussionmentioning

confidence: 99%

Assessment of Right Ventricular Function Using Tissue Doppler Imaging in Infants with Pulmonary Hypertension

Patel

Mills²,

Cheung

2008

Neonatology

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Background: In infants with pulmonary hypertension (PHT), right ventricular (RV) function may be altered and contribute to disease severity. Tissue Doppler imaging (TDI) is a new echocardiographic modality which directly measures myocardial velocities and may allow quantitative assessment of systolic and diastolic ventricular function in infants. Objective: To measure and compare RV myocardial velocities in infants with PHT and in normal control infants, using TDI. Methods: This was a prospective case-control study. Twenty-eight control infants and 15 infants with PHT, of whom 11 had congenital diaphragmatic hernia (CDH), were recruited. TDI was used to obtain systolic and diastolic myocardial velocities in the RV and interventricular septum in all infants. Results: There were significant reductions in systolic isovolumic contraction velocity (IVV; 5.3 vs. 6.6 cm/s) and systolic ejection velocity (S; 6.6 vs. 9.2 cm/s) in the PHT group compared to the control group. Early diastolic myocardial velocity, E’, was also significantly reduced in the RV in the PHT infants compared to controls (–4.3 vs. 8.6 cm/s). The same significant reductions in systolic and early diastolic TDI velocities were observed in the subgroup of CDH infants alone. Conclusions: TDI permits non-invasive assessment of RV myocardial velocities in infants. Reduced systolic and diastolic velocities in PHT may represent impaired systolic contraction and early diastolic relaxation. Therapies which target inotropic and lusitropic function may be appropriate in infants with PHT and RV dysfunction. The load-dependency of TDI measures in infants and the effects of specific therapies on RV function in PHT require further investigation.

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“…All invasive and noninvasive techniques evaluating RV performance have important limitations due to the complex geometry of the right ventricle [3][4][5][6][7][8][9][10][11][12][13][14][15]. The introduction of Doppler measurement of myocardial wall velocities (tissue Doppler imaging; TDI) and the recently developed strain rate imaging (SRI) technique have made a more adequate assessment of global and regional systolic and diastolic RV function possible [16][17][18][19][20][21][22][23]. The purpose of the present study was: 1) to compare SRI parameters with conventional echocardiographic indices and radionuclide indices evaluating RV function in COPD patients; and 2) to assess the correlation among SRI parameters and respiratory function tests.…”

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confidence: 99%

Assessment of right ventricular function by strain rate imaging in chronic obstructive pulmonary disease

Vitarelli

Conde

Cimino

et al. 2006

European Respiratory Journal

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The purpose of the current study was to compare right ventricular (RV) myocardial wall velocities (tissue Doppler imaging) and strain rate imaging (SRI) parameters with conventional echocardiographic indices evaluating RV function in chronic obstructive pulmonary disease (COPD) patients.In total, 39 patients with COPD and 22 healthy subjects were included in the current study. Seventeen patients had pulmonary artery pressure ,35 mmHg (group I) and 22 patients had pulmonary artery pressure .35 mmHg (group II). Tissue Doppler imaging, strain and strain rate (SR) values were obtained from RV free wall (FW) and interventricular septum. Respiratory function tests were performed (forced expiratory volume in one second/vital capacity (FEV1/VC) and carbon monoxide diffusion lung capacity per unit of alveolar volume (DL,CO/VA)).Strain/SR values were reduced in all segments of group II patients compared with group I patients and controls with lowest values at basal FW site. A significant relationship was shown between peak systolic SR at basal FW site and radionuclide RV ejection fraction. A significant relationship was shown between peak systolic SR at basal FW site and DL,CO/VA and FEV1/VC.In conclusion, in chronic obstructive pulmonary disease patients, strain rate imaging parameters can determine right ventricular dysfunction that is complementary to conventional echocardiographic indices and is correlated with pulmonary hypertension and respiratory function tests.

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New developments in echocardiographic methods to assess right ventricular function in congenital heart disease

Cited by 31 publications

References 32 publications

Assessment of right ventricular free wall longitudinal myocardial deformation using speckle tracking imaging in normal subjects

Assessment of right ventricular free wall longitudinal myocardial deformation using speckle tracking imaging in normal subjects

Assessment of Right Ventricular Function Using Tissue Doppler Imaging in Infants with Pulmonary Hypertension

Assessment of right ventricular function by strain rate imaging in chronic obstructive pulmonary disease

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