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Vol. 45. Issue 2.
Pages 59-66 (January 2003)
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Vol. 45. Issue 2.
Pages 59-66 (January 2003)
Utilidad del Doppler color y pulsado en la valoración de los shunts portosistémicos quirúrgicos en la edad pediátrica*
Usefulness of color and pulsed Dopplers in the evaluation of surgical portosystemic shunts in pediatric patients
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Teresa Berrocal1
Corresponding author
cprieto@hulp.insalud.es

Correspondencia: TERESA BERROCAL. Sección de Radiología pediátrica. Hospital Universitario La Paz. Paseo de la Castellana, 261. 28046 Madrid.
, Consuelo Prieto, Pilar Cortés, Ramón Rodríguez, Ignacio Pastor
Sección de Radiología Pediátrica. Hospital Universitario «La Paz». Madrid.
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Los shuntsportosistémicos se realizan para paliar la hipertensión portal sintomática o para descomprimir la vascularización hepática en pacientes con síndrome de Budd-Chiari. La mayoría de los shuntspor-tosistémicos quirúrgicos pueden estudiarse adecuadamente mediante ecografía complementada con Doppler color y pulsado si se compren-de la hemodinámica de los procedimientos quirúrgicos. Este artículo muestra la utilidad y limitaciones de la ecografía duplex Doppler en la evaluación de los shuntsportosistémicos realizados a pacientes pediá-tricos. El Doppler pulsado proporciona información sobre la naturaleza y dirección del flujo sanguíneo y el Doppler color es capaz de mostrar directamente el shunty, en la mayoría de los casos, permite localizar las anastomosis. Los tipos de shuntsque se muestran incluyen espleno-renal proximal y distal, portocava y mesocava. Se ilustran los tipos de conexiones vasculares y se muestra la dirección posquirúrgica espera-ble del flujo en los vasos sanguíneos implicados. Se discute la técnica ecográfica y los criterios para determinar la permeabilidad vascular. Así mismo se enfatizan las ventajas, limitaciones y dificultades diag-nósticas de las distintas modalidades del Doppler.

Palabra clave:
Shuntsportosisté
micos quirúrgicos
Doppler color y pulsado
Niños

Portosystemic shuntsare performed to relieve symptomatic portal hypertension symptomatic or removal pressure in hepatic vascularization in patients with Budd-Chiari’s syndrome. Most surgical portosys-temic shuntscan be suitably studied by means of ultrasound scan complemented by color and pulsed Dopplers, provided one understands the hemodynamics of the surgical procedures involved. This article demonstrates the usefulness and limitations of the ultrasound scan Duplex Doppler in the evaluation of portosystemic shuntsperformed on pediatric patients. Pulsed Doppler provides information regarding the nature and direction of blood flow. Color Doppler is capable of directly revealing the shuntand, in most cases, permits the anastomosis to be located. The types of shuntsthat appear include proximal and distal spleno-renal, portocaval and mesocaval. Types of vascular connections are illustrated, as well as expected post-surgical blood flow direction in affected vessels. The ultrasound scanning technique is discussed, as well as the criteria for determining vascular permeability. Also highlighted are the advantages, limitations and diagnostic difficulties associated with the different forms of Doppler.

Key words:
Surgical portosystemic shunts
Color Doppler
Pulsed Doppler
Children

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