236 Effect of loading conditions on tissue Doppler-derived left ventricular diastolic indices, Ea, Aa, and Ea/Aa

Mitral flow derived Doppler indices of left ventricular diastolic function.

AIMS Left ventricular diastolic dysfunction has been proposed as the basis of heart failure in patients with normal left ventricular systolic function. Doppler indices of mitral inflow have been widely used to diagnose this condition and have been shown to correlate well with increased left atrial pressure in patients with cardiovascular disease. We wanted to establish age-specific criteria for...

Doppler echocardiographic indices of left ventricular diastolic function

The influence of age on six Doppler echocardiographic indices of left ventricular diastolic function was assessed in 86 normal volunteers aged from 20 to 74 years (mean 36). Five of the six indices showed a linear relation with age. Duration of isovolumic relaxation and maximal late diastolic (atrial) flow velocity increased significantly with age (r = 0-34 and r = 0-69, respectively). Converse...

Tissue Doppler-derived myocardial acceleration for evaluation of left ventricular diastolic function.

OBJECTIVES Our purpose was to evaluate a tissue Doppler-based index-peak myocardial acceleration (pACC)-during isovolumic relaxation and in evaluating left ventricular (LV) diastolic function. BACKGROUND Simple, practical indexes for diastolic function evaluation are lacking, but are much desired for clinical evaluation. METHODS We examined eight sheep by using tissue Doppler ultrasound ima...

Influence of aging on Doppler echocardiographic indices of left ventricular diastolic function.

The influence of age on six Doppler echocardiographic indices of left ventricular diastolic function was assessed in 86 normal volunteers aged from 20 to 74 years (mean 36). Five of the six indices showed a linear relation with age. Duration of isovolumic relaxation and maximal late diastolic (atrial) flow velocity increased significantly with age (r = 0.34 and r = 0.69), respectively). Convers...

Influence of age on Doppler echocardiographic indices of left ventricular diastolic function.