Results 161 to 170 of about 5,283 (209)
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Journal of the American Society of Echocardiography, 2004
Left ventricular (LV) isovolumic relaxation time (LVIVRT) obtained by Doppler spectral analysis has emerged as a useful tool to assess diastolic function. 1,2 Correction for heart rate (HR) is an important advance for clinical application of LVIVRT, initially reported in healthy adult subjects by simultaneous phonocardiogram and echocardiogram.
Antonio De Merulis +5 more
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Left ventricular (LV) isovolumic relaxation time (LVIVRT) obtained by Doppler spectral analysis has emerged as a useful tool to assess diastolic function. 1,2 Correction for heart rate (HR) is an important advance for clinical application of LVIVRT, initially reported in healthy adult subjects by simultaneous phonocardiogram and echocardiogram.
Antonio De Merulis +5 more
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[Left ventricular isovolumic relaxation time estimated by the aortic root echocardiogram].
Journal of cardiology, 1988Dual echocardiogram was recorded simultaneously with phonocardiogram (PCG) to analyze the isovolumic relaxation time (IRT) of the left ventricle (LV) in 85 patients with various heart diseases and in 23 normal subjects. The measurements used were time intervals from the onset of the aortic component of the second heart sound (IIA) to the onset of the ...
T, Unno +9 more
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Circulation, 2016
Introduction: Diastolic dysfunction is a leading cause of morbidity and mortality in heart failure. Assessment of diastolic function has been a challenging topic for many decades. One index of diastolic function is the isovolumic relaxation time constant (τ).
Maryam Vejdani-Jahromi +5 more
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Introduction: Diastolic dysfunction is a leading cause of morbidity and mortality in heart failure. Assessment of diastolic function has been a challenging topic for many decades. One index of diastolic function is the isovolumic relaxation time constant (τ).
Maryam Vejdani-Jahromi +5 more
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Journal of pharmacological methods, 1989
The time constant (T) is commonly used for representing the isovolumic fall in left ventricular pressure (LVP) because the isovolumic fall is monoexponential under most circumstances. However, the determination of T is cumbersome due to the requirement of a set of LVP versus time values in fitting a monoexponential function.
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The time constant (T) is commonly used for representing the isovolumic fall in left ventricular pressure (LVP) because the isovolumic fall is monoexponential under most circumstances. However, the determination of T is cumbersome due to the requirement of a set of LVP versus time values in fitting a monoexponential function.
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Isovolumic relaxation time: Comparison of Doppler methods
Heart, Lung and Circulation, 2003Diane M. Jackson, Paul Calafiore
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Journal of cardiology, 1993
We tried to differentiate "pseudonormal" from normal transmitral flow velocity waveforms by evaluating isovolumic relaxation times (IRT) in patients with old myocardial infarction. Forty-three healthy volunteers and 54 patients with old myocardial infarction were studied.
T, Hashimoto +4 more
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We tried to differentiate "pseudonormal" from normal transmitral flow velocity waveforms by evaluating isovolumic relaxation times (IRT) in patients with old myocardial infarction. Forty-three healthy volunteers and 54 patients with old myocardial infarction were studied.
T, Hashimoto +4 more
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247: Isovolumic relaxation time is prolonged in fetal long QT syndrome
American Journal of Obstetrics and Gynecology, 2017Bettina Cuneo +6 more
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The Journal of heart and lung transplantation : the official publication of the International Society for Heart Transplantation, 1991
The reproducibility of the measurement of isovolumic relaxation time in heart transplant recipients was assessed in eight heart transplant recipients. The value of routine measurement of isovolumic relaxation time and fractional shortening by echocardiography in the diagnosis of rejection was assessed by comparison with endomyocardial biopsy results in
FURNISS SS +4 more
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The reproducibility of the measurement of isovolumic relaxation time in heart transplant recipients was assessed in eight heart transplant recipients. The value of routine measurement of isovolumic relaxation time and fractional shortening by echocardiography in the diagnosis of rejection was assessed by comparison with endomyocardial biopsy results in
FURNISS SS +4 more
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Acta cardiologica, 1992
In order to evaluate the value of isovolumic relaxation time measurement for the diagnosis of moderate acute rejection episodes in cardiac allograft recipients a comparison was made with the histological results from the endomyocardial biopsy. A total of 202 isovolumic relaxation time measurements from 26 patients were compared to the biopsy results ...
Forster Tamás +6 more
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In order to evaluate the value of isovolumic relaxation time measurement for the diagnosis of moderate acute rejection episodes in cardiac allograft recipients a comparison was made with the histological results from the endomyocardial biopsy. A total of 202 isovolumic relaxation time measurements from 26 patients were compared to the biopsy results ...
Forster Tamás +6 more
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