Effect of patent ductus arteriosus on Doppler-derived right ventricular systolic time intervals.
Pediatr Cardiol
; 14(3): 155-8, 1993 Jul.
Article
en En
| MEDLINE
| ID: mdl-8415217
ABSTRACT
Right ventricular systolic time intervals (RVSTI) and noninvasive Doppler-derived pulmonary blood flow were measured before and after surgical ductus ligation in 18 otherwise healthy infants and children who were older than 3 months of age. Right ventricular preejection period (PEP) and the ratio of preejection period and right ventricular ejection time (PEP/RVET), both corrected or uncorrected for heart rate, decreased significantly following surgery (PEP 71 +/- 14 vs. 50 +/- 13, p < 0.001 and PEP/RVET 0.29 +/- 0.06 vs. 0.21 +/- 0.05, p < 0.001). The volume of pulmonary blood flow correlated with PEP/RVET (r = 0.48, p = 0.003). The magnitude of the change in pulmonary blood flow correlated with the change in PEP/RVET (r divided by 0.56, p = 0.016). The velocity of circumferential fiber shortening (VCFc) increased after surgery, but not significantly. We speculate that patent ductus arteriosus has a similar effect on right ventricular performance when other congenital heart defects are present.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Sístole
/
Ecocardiografía Doppler
/
Función Ventricular Derecha
/
Conducto Arterioso Permeable
Límite:
Child
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Child, preschool
/
Female
/
Humans
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Infant
/
Male
Idioma:
En
Revista:
Pediatr Cardiol
Año:
1993
Tipo del documento:
Article