Determination of diastolic dysfunction cut-off value by tissue Doppler imaging in adults 70 years of age or older: a comparative analysis of pulsed-wave and color-coded tissue Doppler imaging.
Korean Circ J
; 41(3): 137-42, 2011 Mar.
Article
em En
| MEDLINE
| ID: mdl-21519512
ABSTRACT
BACKGROUND AND OBJECTIVES:
The cut-off value of diastolic dysfunction by tissue Doppler imaging (TDI) is affected by aging and modalities used (pulsed-wave vs. color-coded). The purpose of this study was to investigate the diastolic function of healthy elderly people and to determine the appropriate cut-off value of diastolic dysfunction in elderly individuals. SUBJECTS ANDMETHODS:
Healthy volunteers (n=76) and patients with hypertension (n=51) aged ≥70 years underwent 2-dimensional and Doppler echocardiography. Mitral annulus velocities of TDI were measured at septal and lateral sites using the pulsed-wave and color-coded modalities. The appropriate cut-off value of diastolic dysfunction for healthy elderly individuals was defined as the lower limit of the 95% confidence interval for early diastolic mitral annulus velocity (Ea).RESULTS:
The mean septal and lateral Ea were 6.5±1.5 and 8.3±1.7 cm/s, respectively, by pulsed-wave TDI, and 6.1±1.4 and 7.9±1.7 cm/s, respectively, by color-coded TDI. The cut-off values for diastolic dysfunction were as follows septal and lateral Ea were 6.1 and 7.9 cm/s by pulsed-wave TDI, and 5.7 and 7.5 cm/s by color-coded TDI, respectively. When the group was stratified by gender, Ea was significantly lower in women than men.CONCLUSION:
When interpreting diastolic function as measured by TDI in elderly subjects, different cut-off values should be considered based on the TDI modality, annulus site, and gender.
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Bases de dados:
MEDLINE
Idioma:
En
Revista:
Korean Circ J
Ano de publicação:
2011
Tipo de documento:
Article