ABSTRACT
Systemic and splanchnic hemodynamic parameters were evaluated in 12 patients with cirrhosis before and 3 and 6 months after liver transplantation. Results were compared with those obtained in 8 healthy subjects. Three months after liver transplantation recipients had an increase in mean arterial pressure (98 +/- 7 v 78 +/- 9 mmHg; P < .05), an insignificant decrease in cardiac index (3. 4 +/- 0.6 v 4.0 +/- 1.0 L . min-1 . m-2), and a marked increase in peripheral vascular resistance (1,563 +/- 308 v 800 +/- 205 dyne . s . cm-5; P < .05) compared with pretransplantation values. Portal blood flow was also significantly increased (1,494 +/- 200 v 829 +/- 130 mL/min; P < .05). These hemodynamic changes were more pronounced 6 months after transplantation (mean arterial pressure, 100 +/- 8 mmHg; cardiac index, 3.0 +/- 1.0 L . min-1 . m-2; P < .01; peripheral vascular resistance, 1,680 +/- 405 dyne . s . cm-5; portal blood flow, 1,520 +/- 180 mL/min). Systemic hemodynamics 6 months after liver transplantation were similar to those observed in the healthy control group (mean arterial pressure, 95 +/- 6 mmHg; cardiac index, 2.9 +/- 0.9 L . min-1 . m-2; peripheral vascular resistance, 1,480 +/- 380 dyne . s . cm-5). However, portal blood flow was still significantly higher than in healthy controls at 6 months (1,520 +/- 180 v 910 +/- 140 mL/min; P < .05). This study shows that systemic hemodynamics are normalized after liver transplantation. However, an increase in portal blood flow occurs and persists for at least 6 months after liver transplantation. Further studies are needed to clarify the cause of the abnormally high portal flows.
Subject(s)
Hyperemia/etiology , Liver Failure/surgery , Liver Transplantation/adverse effects , Splenic Diseases/etiology , Adult , Blood Flow Velocity , Blood Pressure , Follow-Up Studies , Humans , Hyperemia/diagnostic imaging , Hyperemia/physiopathology , Laser-Doppler Flowmetry , Middle Aged , Portal System/diagnostic imaging , Portal System/physiopathology , Postoperative Complications , Splenic Diseases/diagnostic imaging , Splenic Diseases/physiopathology , Ultrasonography, Doppler, Pulsed , Vascular ResistanceABSTRACT
Se estudian ecograficamente 104 pacientes portadores de colecistitis aguda. Se describen y tabulan los signos ecograficos directos e indirectos de esta patologia.En el 63,4% de la serie se hallaron signos de inflamacion vesicular acompanados de evidencia de litiasis en el 98% de los casos.En el 34,6% se hallo litiasis como unico signo y solo en 2 casos (1,9%) la ecografia fue normal
Subject(s)
Humans , Cholecystitis , UltrasonographyABSTRACT
Se estudian ecograficamente 104 pacientes portadores de colecistitis aguda. Se describen y tabulan los signos ecograficos directos e indirectos de esta patologia.En el 63,4% de la serie se hallaron signos de inflamacion vesicular acompanados de evidencia de litiasis en el 98% de los casos.En el 34,6% se hallo litiasis como unico signo y solo en 2 casos (1,9%) la ecografia fue normal
Subject(s)
Humans , Cholecystitis , UltrasonographyABSTRACT
El objetivo del presente tabajo es evaluar un nuevo metodo de diagnostico, la ecografia de la vena porta y tributarias en la hipertension portal prehepatica. Se estudiaron cinco pacientes comparando este metodo con la clasica fase venosa esplenica.Los resultados muestron una estrecha correlacion de datos.La ecografia contribuyo al diagnostico mediante el tamano del bazo aumento del calibre de la vena esplenica y/o colaterales. La etiologia fue sugerida cuando se observo una masa mixta proxima al hilio hepatico constituido por estructuras tubulares y tortuosas y la falta de visualizacion de ramas portales intrahepaticas. En un caso se observo anastomosis mesocava postquirurgica. La ecografia abdominal es un metodo de exploracion rapido seguro y no agresivo, que ante la sospecha de hipertension portal puede proporcionar la confirmacion diagnostica
