Serial assessment of left-ventricular function using tissue Doppler imaging in premature infants within 7 days of life.
Pediatr Cardiol
; 34(6): 1491-8, 2013 Aug.
Article
em En
| MEDLINE
| ID: mdl-23475256
ABSTRACT
Although many echocardiographic parameters can assess cardiac function noninvasively in preterm infants, it has not been determined what indices are the best. We assessed left-ventricular performance in 101 very low-birth weight (VLBW) infants using tissue Doppler imaging (TDI) echocardiography. Echocardiographic examinations, including TDI, were performed serially within 7 days of life. Pulsed-Doppler TDI waveforms were recorded at the mitral valve annulus, and peak systolic velocities (Sa), early diastolic velocities (Ea), and late diastolic velocities (Aa) were measured. Sa and Aa velocities were both decreased significantly from 3 to 12 h and then gradually increased. Ea velocities showed no significant, longitudinal changes, but Ea values in premature groups appeared to be significantly lower than those in mature groups. The ratio of E to Ea (E/Ea) of VLBW infants seemed to be almost stable from birth to day 7, and this also showed no significant differences between different gestational age groups. E/Ea values in infants with patent ductus arteriosus (PDA) appeared to be greater than those in non-PDA infants. Our present findings suggest that TDI assessment in the early neonatal period might be useful in detecting latent systolic/diastolic failure of critically ill preterm infants.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ecocardiografia Doppler
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Função Ventricular Esquerda
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Disfunção Ventricular Esquerda
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Doenças do Prematuro
Tipo de estudo:
Observational_studies
/
Prognostic_studies
Limite:
Female
/
Humans
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Male
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Newborn
Idioma:
En
Revista:
Pediatr Cardiol
Ano de publicação:
2013
Tipo de documento:
Article