Função miocárdica regional em adultos saudáveis. Avaliação por ecocardiografia Doppler tecidual / Regional myocardial function in healthy adults. Assessment through tissue Doppler echocardiography
Arq. bras. cardiol
;
80(5): 465-482, May 2003. ilus, tab
Article
in English, Portuguese
| LILACS
| ID: lil-336445
RESUMO
OBJECTIVE: To characterize left ventricular regional myocardial function through tissue Doppler echocardiography in healthy adults and to assess the influence of aging in this function. METHODS: In 45 healthy volunteers divided in two groups (< 45 and > 45 years old) we assessed longitudinal and radial regional function (velocities, times intervals and velocity-time integrals). Data were compared in each group and between groups. RESULTS: Systolic function: a) longitudinal: higher velocities and integrals in lateral and inferior walls and in basal segments, with a trend to reduction of these parameters with aging; b) radial: higher basal velocities, no significant change with aging. Diastolic function: a) longitudinal: higher velocities in lateral and inferior walls and in basal segments. With aging e and e/a velocities and integrals decreased, a increased and older individuals showed lower percentage of segments with e/a >1; b) radial: aging was associated with lower e and higher a velocities. CONCLUSION: 1) Tissue Doppler echocardiography detects physiological differences between regional myocardial function of different ventricular segments, in velocities, times intervals and integrals, with physiological heterogeneity and asynchrony; 2) Many of these data are age dependent; 3) Our data contribute to define normal values, and may become useful when compared with data from populations with heart diseases
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Echocardiography, Doppler
/
Ventricular Function, Left
/
Heart
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
English
/
Portuguese
Journal:
Arq. bras. cardiol
Journal subject:
Cardiology
Year:
2003
Type:
Article
Affiliation country:
Portugal
Institution/Affiliation country:
Hospital Pulido Valente/PT
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