Echocardiographic evaluation of left ventricular end-systolic elastance in the elderly.
Eur J Heart Fail
; 7(5): 829-33, 2005 Aug.
Article
em En
| MEDLINE
| ID: mdl-16087137
ABSTRACT
BACKGROUND:
The aging heart is characterized by structural changes, which are implicated in the development of left ventricular diastolic dysfunction. However, important changes in systolic function may also occur. Left ventricular end-systolic elastance (E(es)) is a major determinant of cardiac systolic function and ventricular-arterial interaction.AIM:
To evaluate left-ventricular E(es) in elderly subjects compared with adult control subjects.METHODS:
We studied dilated (DA, n=14) and hypertensive (HA, n=21) cardiomyopathy patients, and both adult control (A, n=25; age 55.6+/-6.6 years) and elderly (E, n=25; age 76.3+/-7.1 years) subjects without clinical-instrumental evidence of cardiovascular disease. M-mode, two-dimensional, and pulsed Doppler echocardiogram were performed. Doppler-derived indices of diastolic function were assessed and E(es) was calculated by a modified single-beat method.RESULTS:
E(es) was reduced in dilated cardiomyopathy (1.32+/-0.10 mm Hg/ml) and increased in hypertensive cardiomyopathy (3.12+/-0.33 mm Hg/ml) patients compared to age-matched control subjects (1.96+/-0.26 mm Hg/ml; p<0.01 and p<0.05, respectively). More importantly, E(es) was higher in the elderly (2.52+/-0.70 mm Hg/ml) than in the adult control group (p<0.05) and was linearly correlated with age (r2=0.639; p<0.0001).CONCLUSION:
Age-related increase in E(es), together with diastolic dysfunction, may lead to aging heart decompensation.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Tipo de estudo:
Observational_studies
Limite:
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Ano de publicação:
2005
Tipo de documento:
Article