Real-time and Doppler US after pediatric segmental liver transplantation : I. Portal vein stenosis.
Pediatr Radiol
; 38(4): 403-8, 2008 Apr.
Article
en En
| MEDLINE
| ID: mdl-18214459
BACKGROUND: Accurate diagnosis of portal vein (PV) stenosis by real-time and color Doppler US (CD-US) after segmental liver transplantation in children can decrease morbidity by avoiding unnecessary biopsy, PV hypertension, thrombosis and loss of the graft. OBJECTIVE: To evaluate CD-US parameters for the prediction of PV stenosis after segmental liver transplantation in children. MATERIALS AND METHODS: We retrospectively reviewed 61 CD-US examinations measuring the diameter at the PV anastomosis, velocities at the anastomosis (PV1) and in the segment proximal to the anastomosis (PV2), and the PV1/PV2 velocity ratio. The study group comprised patients with stenosis confirmed by angiography and the control group comprised patients with a good clinical outcome. RESULTS: PV stenosis was seen in 12 CD-US examinations. The mean PV diameter was smaller in the study group (2.6 mm versus 5.7 mm) and a PV diameter of <3.5 mm was highly predictive of stenosis (sensitivity 100%, specificity 91.8%). CONCLUSION: A PV diameter of <3.5 mm is a highly predictive CD-US parameter for the detection of hemodynamically significant stenosis on angiography.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Vena Porta
/
Complicaciones Posoperatorias
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Enfermedad Veno-Oclusiva Hepática
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Trasplante de Hígado
/
Ultrasonografía Doppler en Color
Tipo de estudio:
Diagnostic_studies
/
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Límite:
Adolescent
/
Child
/
Child, preschool
/
Female
/
Humans
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Infant
/
Male
Idioma:
En
Revista:
Pediatr Radiol
Año:
2008
Tipo del documento:
Article
País de afiliación:
Brasil
Pais de publicación:
Alemania