Hemodynamics of Portal Venous Stenosis Before and After Treatment in Pediatric Liver Transplantation: Evaluation with Doppler Ultrasound

Abstract Aim The aim of this study was to evaluate portal vein stenosis (PVS) in pediatric liver transplantation (PLT) using Doppler ultrasound (DUS) before and after interventional management for hemodynamic changes. Materials and Methods From 2000 to 2010, we encountered 11 PVS cases among 180 PLT...

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Veröffentlicht in:	Transplantation proceedings 2012-03, Vol.44 (2), p.481-483
Hauptverfasser:	Huang, T.L, Chen, T.Y, Tsang, L.L, Ou, H.Y, Yu, C.Y, Wang, C.C, Wang, S.H, Lin, C.C, Liu, Y.W, Yong, C.C, Chiu, K.W, Eng, H.L, Jawan, B, Cheng, Y.F, Chen, C.L
Format:	Artikel
Sprache:	eng
Schlagworte:	Biological and medical sciences Blood Flow Velocity Constriction, Pathologic Female Fundamental and applied biological sciences. Psychology Fundamental immunology General aspects Hemodynamics Humans Liver Circulation Liver Transplantation - adverse effects Liver, biliary tract, pancreas, portal circulation, spleen Male Medical sciences Platelet Count Portal Vein - diagnostic imaging Portal Vein - physiopathology Predictive Value of Tests Regional Blood Flow Retrospective Studies Splenomegaly - etiology Stents Surgery Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases Surgery of the digestive system Taiwan Thrombocytopenia - etiology Time Factors Tissue, organ and graft immunology Tomography, X-Ray Computed Treatment Outcome Ultrasonography, Doppler Vascular Diseases - diagnostic imaging Vascular Diseases - etiology Vascular Diseases - physiopathology Vascular Diseases - therapy
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Zusammenfassung:	Abstract Aim The aim of this study was to evaluate portal vein stenosis (PVS) in pediatric liver transplantation (PLT) using Doppler ultrasound (DUS) before and after interventional management for hemodynamic changes. Materials and Methods From 2000 to 2010, we encountered 11 PVS cases among 180 PLT that were evaluated using DUS and computed tomography (CT) angiography (CTA); all underwent portal stenting. DUS was used to monitor portal hemodynamics. For the diagnosis of PVS, we investigated multiple parameters including stenotic size (SS), stenotic ratio (SR) (SR [%] = PRE-SS/PRE [PRE = stenotic size]), portal flow velocity ratio (VR) (VR = VS/PRE [PRE = velocity at prestenotic site; VS = peak velocity at stenotic site]), spleen size, and platelet count. Results The incidence of PVS was 5.6% (11/180). The PV was 2.5 mm using DUS and 2.7 mm using CTA. The average SR was 65% fitting the criterion. Low prestenotic portal flow
ISSN:	0041-1345 1873-2623
DOI:	10.1016/j.transproceed.2012.01.047