Association of newer diastolic function parameters with age in healthy subjects: a population-based study - 28/08/11

Abstract |
Objectives |
We sought to determine if newer Doppler diastolic function parameters are associated with age and to define age-stratified reference ranges for these parameters in a population-based setting.
Background |
Although newer Doppler parameters aid in the evaluation of diastolic function and filling pressures, age-specific reference ranges are poorly described.
Methods |
Randomly selected residents of Olmsted County, Minn, age ≥ 45 years were studied (n = 2042) prospectively. Those without a history of cardiovascular disease or abnormal 2-dimensional echocardiograms were selected. Measured parameters included the transmitral early (E) and late (A) filling velocities at rest and with Valsalva, A duration, pulmonary venous atrial reversal duration, lateral and septal early diastolic mitral annular velocities, E/lateral early diastolic mitral annular velocity, E/septal early diastolic mitral annular velocity, and the index of left ventricular myocardial performance.
Results |
A total of 1012 subjects met the inclusion criteria. Both A duration (r = 0.18, P < .001) and pulmonary venous atrial reversal duration (r = 0.28, P < .001) were longer in older subjects, whereas their difference showed a marginal correlation with age (r = 0.07, P = .036). The E/A ratio at peak Valsalva correlated with age (r = −0.54, P < .001) whereas the change in E/A with Valsalva (corrected for E-A fusion) showed a marginal correlation with age (r = 0.08, P = .032). Both E/lateral early diastolic mitral annular velocity (r = 0.39, P < .001) and E/septal early diastolic mitral annular velocity (r = 0.27, P < .001) increased with age. Left ventricular myocardial performance showed a marginal correlation with age (r = 0.08, P = .014). Age specific reference ranges (median, 5th and 95th percentiles) for all parameters are provided.
Conclusions |
All newer Doppler diastolic function parameters showed a variable but significant correlation with age. Age-specific reference values will aid in the interpretation of diastolic function parameters.
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| Supported by grants from the Public Health Service (NIH HL 55502 and NIH AR 30582), the Marriott Foundation, the Miami Heart Research Institute and the Mayo Foundation. |
Vol 16 - N° 10
P. 1049-1056 - octobre 2003 Retour au numéroBienvenue sur EM-consulte, la référence des professionnels de santé.
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