Identificaçäo ecocardiográfica do fluxo venoso pulmonar: um indicador de hiperfluxo pulmonar nas malformações cardíacas congênitas / Echocardiographic assessment of the pulmonary venous flow: an indicator of increased pulmonary flow in congenital cardiac malformations
Arq. bras. cardiol
;
78(6): 537-544, June 2002. ilus, tab
Artículo
en Portugués, Inglés
| LILACS
| ID: lil-316149
RESUMO
OBJECTIVE:
To identify the left inferior pulmonary vein as an indirect marker of increased pulmonary flow in congenital heart diseases.METHODS:
We carried out a prospective consecutive study on 40 patients divided into 2 groups as follows G1 - 20 patients diagnosed with congenital heart disease and increased pulmonary flow; G2 (control group) - 20 patients who were either healthy or had congenital heart disease with decreased or normal pulmonary flow. We obtained the velocity-time integral of the left inferior pulmonary vein flow, excluding the "reverse A" wave, with pulsed Doppler echocardiography.RESULTS:
In G1, 19 out of the 20 patients had well-identified dilation of the left inferior pulmonary vein. No G2 patient had dilation of the left inferior pulmonary vein. Dilation of the left inferior pulmonary vein in conditions of increased pulmonary flow had sensitivity of 95 percent, specificity of 100 percent, positive predictive value of 100 percent, and negative predictive value of 95 percent (1 false-negative case). The integral of time and velocity of the pulmonary venous flow obtained with pulsed Doppler echocardiography was greater in the G1 patients (G1=25.0±4.6 cm versus G2=14.8±2.1 cm, p=0.0001).CONCLUSION:
The identification of dilation of the left inferior pulmonary vein suggests the presence of congenital heart disease with increased pulmonary flow. This may be used as an indirect sign of increased flow, mainly in malformations of difficult diagnosis, such as atrial septal defects of the venous sinus or coronary sinus type
Texto completo:
Disponible
Índice:
LILACS (Américas)
Asunto principal:
Venas Pulmonares
/
Cardiopatías Congénitas
Tipo de estudio:
Estudio diagnóstico
/
Estudio observacional
/
Factores de riesgo
Límite:
Adolescente
/
Niño
/
Child, preschool
/
Femenino
/
Humanos
/
Masculino
Idioma:
Inglés
/
Portugués
Revista:
Arq. bras. cardiol
Asunto de la revista:
Cardiología
Año:
2002
Tipo del documento:
Artículo
País de afiliación:
Brasil
Institución/País de afiliación:
Universidade Federal de Säo Paulo/BR
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