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Tamarozzi F, Ursini T, Stroffolini G, Badona Monteiro G, Buonfrate D, Fittipaldo VA, Conci S, Gasparini C, Mansueto G, Guglielmi A, Gobbi F. Transjugular intrahepatic portosystemic shunt followed by splenectomy for complicated hepatosplenic schistosomiasis: a case report and review of the literature. THE LANCET. INFECTIOUS DISEASES 2024; 24:e405-e414. [PMID: 38368890 DOI: 10.1016/s1473-3099(23)00689-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/25/2023] [Revised: 10/12/2023] [Accepted: 10/30/2023] [Indexed: 02/20/2024]
Abstract
Hepatosplenic schistosomiasis is a complex clinical condition caused by the complications of chronic infection with Schistosoma species that cause intestinal schistosomiasis. Hepatosplenic schistosomiasis derives from the fibrotic reaction stimulated around parasite eggs that are transported by the mesenteric circulation to the liver, causing periportal fibrosis. Portal hypertension and variceal gastrointestinal bleeding are major complications of hepatosplenic schistosomiasis. The clinical management of hepatosplenic schistosomiasis is not standardised and a parameter that could guide clinical decision making has not yet been identified. Transjugular intrahepatic portosystemic shunt (TIPS) appears promising for use in hepatosplenic schistosomiasis but is still reported in very few patients. In this Grand Round, we report one patient with hepatosplenic schistosomiasis treated with TIPS, which resulted in regression of oesophageal varices but had to be followed by splenectomy due to persisting severe splenomegaly and thrombocytopenia. We summarise the main challenges in the clinical management of this patient with hepatosplenic schistosomiasis, highlight results of a scoping review of the literature, and evaluate the use of of TIPS in patients with early hepatosplenic schistosomiasis, to improve the prognosis.
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Affiliation(s)
- Francesca Tamarozzi
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Negrar di Valpolicella, Verona, Italy.
| | - Tamara Ursini
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Negrar di Valpolicella, Verona, Italy
| | - Giacomo Stroffolini
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Negrar di Valpolicella, Verona, Italy
| | - Geraldo Badona Monteiro
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Negrar di Valpolicella, Verona, Italy
| | - Dora Buonfrate
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Negrar di Valpolicella, Verona, Italy
| | - Veronica Andrea Fittipaldo
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Negrar di Valpolicella, Verona, Italy
| | - Simone Conci
- Division of General and Hepatobiliary Surgery, Department of Surgical Sciences, Dentistry, Gynaecology, and Paediatrics, University of Verona, University Hospital G B Rossi, Verona, Italy
| | - Clizia Gasparini
- Department of Radiology, University of Verona, University Hospital G B Rossi, Verona, Italy
| | - Giancarlo Mansueto
- Department of Radiology, University of Verona, University Hospital G B Rossi, Verona, Italy
| | - Alfredo Guglielmi
- Division of General and Hepatobiliary Surgery, Department of Surgical Sciences, Dentistry, Gynaecology, and Paediatrics, University of Verona, University Hospital G B Rossi, Verona, Italy
| | - Federico Gobbi
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS Sacro Cuore Don Calabria Hospital, Negrar di Valpolicella, Verona, Italy; Department of Clinical and Experimental Sciences, University of Brescia, Brescia, Italy
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Saltini D, Indulti F, Guasconi T, Bianchini M, Cuffari B, Caporali C, Casari F, Prampolini F, Senzolo M, Colecchia A, Schepis F. Transjugular Intrahepatic Portosystemic Shunt: Devices Evolution, Technical Tips and Future Perspectives. J Clin Med 2023; 12:6758. [PMID: 37959225 PMCID: PMC10650044 DOI: 10.3390/jcm12216758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 10/18/2023] [Accepted: 10/20/2023] [Indexed: 11/15/2023] Open
Abstract
Portal hypertension (PH) constitutes a pivotal factor in the progression of cirrhosis, giving rise to severe complications and a diminished survival rate. The transjugular intrahepatic portosystemic shunt (TIPS) procedure has undergone significant evolution, with advancements in stent technology assuming a central role in managing PH-related complications. This review aims to outline the progression of TIPS and emphasizes the significant influence of stent advancement on its effectiveness. Initially, the use of bare metal stents (BMSs) was limited due to frequent dysfunction. However, the advent of expanding polytetrafluoroethylene-covered stent grafts (ePTFE-SGs) heralded a transformative era, greatly enhancing patency rates. Further innovation culminated in the creation of ePTFE-SGs with controlled expansion, enabling precise adjustment of TIPS diameters. Comparative analyses demonstrated the superiority of ePTFE-SGs over BMSs, resulting in improved patency, fewer complications, and higher survival rates. Additional technical findings highlight the importance of central stent placement and adequate stent length, as well as the use of smaller calibers to reduce the risk of shunt-related complications. However, improving TIPS through technical means alone is inadequate for optimizing patient outcomes. An extensive understanding of hemodynamic, cardiac, and systemic factors is required to predict outcomes and tailor a personalized approach. Looking forward, the ongoing progress in SG technology, paired with the control of clinical factors that can impact outcomes, holds the promise of reshaping the management of PH-related complications in cirrhosis.
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Affiliation(s)
- Dario Saltini
- Division of Gastroenterology, Azienda Ospedaliero-Universitaria di Modena, and University of Modena and Reggio Emilia, 41121 Modena, Italy (F.I.); (T.G.); (M.B.); (B.C.); (A.C.)
| | - Federica Indulti
- Division of Gastroenterology, Azienda Ospedaliero-Universitaria di Modena, and University of Modena and Reggio Emilia, 41121 Modena, Italy (F.I.); (T.G.); (M.B.); (B.C.); (A.C.)
| | - Tomas Guasconi
- Division of Gastroenterology, Azienda Ospedaliero-Universitaria di Modena, and University of Modena and Reggio Emilia, 41121 Modena, Italy (F.I.); (T.G.); (M.B.); (B.C.); (A.C.)
| | - Marcello Bianchini
- Division of Gastroenterology, Azienda Ospedaliero-Universitaria di Modena, and University of Modena and Reggio Emilia, 41121 Modena, Italy (F.I.); (T.G.); (M.B.); (B.C.); (A.C.)
| | - Biagio Cuffari
- Division of Gastroenterology, Azienda Ospedaliero-Universitaria di Modena, and University of Modena and Reggio Emilia, 41121 Modena, Italy (F.I.); (T.G.); (M.B.); (B.C.); (A.C.)
| | - Cristian Caporali
- Division of Radiology, Azienda Ospedaliero-Universitaria di Modena, and University of Modena and Reggio Emilia, 41121 Modena, Italy; (C.C.)
| | - Federico Casari
- Division of Radiology, Azienda Ospedaliero-Universitaria di Modena, and University of Modena and Reggio Emilia, 41121 Modena, Italy; (C.C.)
| | - Francesco Prampolini
- Division of Radiology, Azienda Ospedaliero-Universitaria di Modena, and University of Modena and Reggio Emilia, 41121 Modena, Italy; (C.C.)
| | - Marco Senzolo
- Multivisceral Transplant Unit-Gastroenterology, Department of Surgery, Oncology and Gastroenterology, Padua University Hospital, 35128 Padua, Italy;
| | - Antonio Colecchia
- Division of Gastroenterology, Azienda Ospedaliero-Universitaria di Modena, and University of Modena and Reggio Emilia, 41121 Modena, Italy (F.I.); (T.G.); (M.B.); (B.C.); (A.C.)
| | - Filippo Schepis
- Division of Gastroenterology, Azienda Ospedaliero-Universitaria di Modena, and University of Modena and Reggio Emilia, 41121 Modena, Italy (F.I.); (T.G.); (M.B.); (B.C.); (A.C.)
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Hamasaki M, Araki T, Tamada D, Morisaka H, Johno H, Aikawa Y, Onishi H. Four-dimensional flow magnetic resonance imaging for assessment of hemodynamic changes in the portal venous system before and after balloon-occluded retrograde transvenous obliteration: a pilot feasibility study. Acta Radiol 2022; 64:1462-1468. [PMID: 36325676 DOI: 10.1177/02841851221133487] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Background The effectiveness of four-dimensional (4D) flow magnetic resonance imaging (MRI) for assessing hemodynamic changes before and after balloon-occluded retrograde transvenous obliteration (BRTO) remains unclear. Purpose To evaluate the feasibility of 4D flow MRI for assessing hemodynamic changes in the portal venous system before and after BRTO. Material and Methods We included 10 patients (7 men, 3 women; mean age = 67 years) with liver cirrhosis who had a high risk of gastric variceal bleeding or hepatic encephalopathy. Non-contrast 4D flow MRI of the upper abdomen was performed before and after BRTO. In addition, we compared the blood flow rates in the portal vein (PV), superior mesenteric vein (SMV), splenic vein (SV), left renal vein, and inferior vena cava before and after BRTO. Moreover, the flow directions of the SMV and SV before and after BRTO were assessed using both portography and 4D flow MRI. Results There was a significant post-BRTO increase in the blood flow rate in the PV and SV ( P < 0.05). There was no significant post-BRTO change in the blood flow rates in the SMV, inferior vena cava, and left renal vein. In four patients, portography confirmed that hepatofugal flow in the SV and SMV changed to hepatopetal flow after BRTO. Moreover, 4D flow MRI correctly assessed the flow directions in the SMV and SV in 70%–100% of the patients. Conclusion 4D flow MRI can be used to detect hemodynamic changes in the portal venous system before and after BRTO.
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Affiliation(s)
- Masahiro Hamasaki
- Department of Radiology, University of Yamanashi, Chuo-shi, Yamanashi, Japan
| | - Takuji Araki
- Department of Radiology, University of Yamanashi, Chuo-shi, Yamanashi, Japan
| | - Daiki Tamada
- Department of Radiology, University of Yamanashi, Chuo-shi, Yamanashi, Japan
| | - Hiroyuki Morisaka
- Department of Radiology, University of Yamanashi, Chuo-shi, Yamanashi, Japan
| | - Hisashi Johno
- Department of Radiology, University of Yamanashi, Chuo-shi, Yamanashi, Japan
| | - Yoshihito Aikawa
- Department of Radiology, University of Yamanashi, Chuo-shi, Yamanashi, Japan
| | - Hiroshi Onishi
- Department of Radiology, University of Yamanashi, Chuo-shi, Yamanashi, Japan
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Retrospective evaluation of early thrombosis in transjugular intrahepatic portosystemic polytetrafluoroethylene-coated shunts under 2-day postinterventional heparinization. Sci Rep 2022; 12:10506. [PMID: 35732875 PMCID: PMC9217914 DOI: 10.1038/s41598-022-14388-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Accepted: 06/06/2022] [Indexed: 11/08/2022] Open
Abstract
The development of acute thrombosis within the TIPS tract may be prevented by prophylactic anticoagulation; however, there is no evidence of the correct anticoagulation regimen after TIPS placement. The purpose of this single-center retrospective study was to evaluate the short-term occlusion rate of transjugular intrahepatic portosystemic shunts (TIPSs) with polytetrafluorethylene (PTFE)-coated stents under consequent periprocedural full heparinization (target partial thromboplastin time [PTT]: 60–80 s). We analyzed TIPS placements that were followed up over a six-month period by Doppler ultrasound in 94 patients and compared the study group of 54 patients who received intravenous periprocedural full heparinization (target PTT: 60–80 s) without any other anticoagulation to patients with prolonged anticoagulation medication. The primary endpoint was TIPS patency after six months. The primary patency rate was 88.3% overall, and in the study group, 90.7%, with an early thrombosis rate of 3.2% (study group: 1.9%) and a primary assisted patency rate of 95.7% (study group: 96.3%). In the study group, one case of TIPS thrombosis occurred on the 23rd day after TIPS placement. Two patients underwent reintervention because of stenosis or buckling. Moreover, the target PTT was not attained in 8 of the 54 patent TIPSs. Four patients had an increased portosystemic pressure gradient, without stenosis, and the flow rate was corrected by increasing the TIPS diameter by dilation. Two-day heparinization seems sufficient to avoid early TIPS thrombosis over a six-month period.
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Haskal ZJ. Meet A New Boss, Not Quite The Old Boss. Cardiovasc Intervent Radiol 2022; 45:550-551. [DOI: 10.1007/s00270-022-03057-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Accepted: 01/03/2022] [Indexed: 11/29/2022]
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Tamarozzi F, Fittipaldo VA, Orth HM, Richter J, Buonfrate D, Riccardi N, Gobbi FG. Diagnosis and clinical management of hepatosplenic schistosomiasis: A scoping review of the literature. PLoS Negl Trop Dis 2021; 15:e0009191. [PMID: 33764979 PMCID: PMC7993612 DOI: 10.1371/journal.pntd.0009191] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Hepatosplenic schistosomiasis (HSS) is a disease caused by chronic infection with Schistosma spp. parasites residing in the mesenteric plexus; portal hypertension causing gastrointestinal bleeding is the most dangerous complication of this condition. HSS requires complex clinical management, but no specific guidelines exist. We aimed to provide a comprehensive picture of consolidated findings and knowledge gaps on the diagnosis and treatment of HSS. METHODOLOGY/PRINCIPAL FINDINGS We reviewed relevant original publications including patients with HSS with no coinfections, published in the past 40 years, identified through MEDLINE and EMBASE databases. Treatment with praziquantel and HSS-associated pulmonary hypertension were not investigated. Of the included 60 publications, 13 focused on diagnostic aspects, 45 on therapeutic aspects, and 2 on both aspects. Results were summarized using effect direction plots. The most common diagnostic approaches to stratify patients based on the risk of variceal bleeding included the use of ultrasonography and platelet counts; on the contrary, evaluation and use of noninvasive tools to guide the choice of therapeutic interventions are lacking. Publications on therapeutic aspects included treatment with beta-blockers, local management of esophageal varices, surgical procedures, and transjugular intrahepatic portosystemic shunt. Overall, treatment approaches and measured outcomes were heterogeneous, and data on interventions for primary prevention of gastrointestinal bleeding and on the long-term follow-up after interventions were lacking. CONCLUSIONS Most interventions have been developed on the basis of individual groups' experiences and almost never rigorously compared; furthermore, there is a lack of data regarding which parameters can guide the choice of intervention. These results highlight a dramatic need for the implementation of rigorous prospective studies with long-term follow-up in different settings to fill such fundamental gaps, still present for a disease affecting millions of patients worldwide.
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Affiliation(s)
- Francesca Tamarozzi
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico) Sacro Cuore Don Calabria Hospital, Negrar di Valpolicella, Verona, Italy
| | - Veronica A. Fittipaldo
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico) Sacro Cuore Don Calabria Hospital, Negrar di Valpolicella, Verona, Italy
| | - Hans Martin Orth
- Department of Gastroenterology, Hepatology and Infectious Diseases, Duesseldorf University Hospital, Heinrich Heine University, Düsseldorf, Germany
| | - Joachim Richter
- Institute of Tropical Medicine and International Health, Charité Universitätsmedizin, Berlin, Germany
| | - Dora Buonfrate
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico) Sacro Cuore Don Calabria Hospital, Negrar di Valpolicella, Verona, Italy
| | - Niccolò Riccardi
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico) Sacro Cuore Don Calabria Hospital, Negrar di Valpolicella, Verona, Italy
| | - Federico G. Gobbi
- Department of Infectious-Tropical Diseases and Microbiology, IRCCS (Istituto di Ricovero e Cura a Carattere Scientifico) Sacro Cuore Don Calabria Hospital, Negrar di Valpolicella, Verona, Italy
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Wang X, Zhu Y, Zhu M, Luo X, Yang L. Combined Y-configured stents for revising occluded transjugular intrahepatic portosystemic shunt. Diagn Interv Radiol 2021; 27:238-243. [PMID: 33517256 DOI: 10.5152/dir.2021.20036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
PURPOSE We aimed to determine the technical feasibility, safety and prognosis of the transjugular intrahepatic portosystemic shunt (TIPS) revision by combined Y-configured stents placement. METHODS We retrospectively evaluated 12 patients who received TIPS revision using Y-stenting technique between June 2015 and January 2019. The rates of technical success, complication, shunt patency, hepatic encephalopathy and mortality were described and analyzed. RESULTS The combined Y-configured stents were successfully placed in 11 of 12 patients (92%) without major complications. The median portosystemic pressure gradient (PPG) decreased from 23 mmHg (interquartile range, IQR, 18.5-27.5 mmHg) to 10 mmHg (IQR, 9-14 mmHg). The left internal jugular vein approach was used in 5 patients. Four patients required a shunt extension with an extra stent to resolve the stenosis at the portal venous terminus. Two patients developed hepatic encephalopathy, which was medically controlled within 3 months after the procedure. The TIPS patency and survival rates were both 100% during a median follow-up period of 10 months (IQR, 5.5-14 months). CONCLUSION TIPS revision by combined Y-configured stents placement was technically feasible and safe with favorable clinical outcomes.
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Affiliation(s)
- Xiaoze Wang
- Department of Gastroenterology and Hepatology, Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, West China Hospital, Sichuan University, Chengdu, China
| | - Yongjun Zhu
- Department of Gastroenterology and Hepatology, Second Affiliated Hospital of Chongqing Medical Univeristy, Chongqing, China
| | - Ming Zhu
- Department of Gastroenterology and Hepatology, Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, West China Hospital, Sichuan University, Chengdu, China
| | - Xuefeng Luo
- Department of Gastroenterology and Hepatology, Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, West China Hospital, Sichuan University, Chengdu, China
| | - Li Yang
- Department of Gastroenterology and Hepatology, Sichuan University-University of Oxford Huaxi Joint Centre for Gastrointestinal Cancer, West China Hospital, Sichuan University, Chengdu, China
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The Pull-Through Technique for Recanalization of Transjugular Intrahepatic Portosystemic Shunt Dysfunction. Gastroenterol Res Pract 2020; 2020:9150173. [PMID: 32411208 PMCID: PMC7201481 DOI: 10.1155/2020/9150173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 03/09/2020] [Indexed: 02/07/2023] Open
Abstract
Purpose To evaluate the technical efficacy and safety of the pull-through technique in recanalization of transjugular intrahepatic portosystemic shunt (TIPS) when standard transjugular approach is inaccessible. Materials and Methods A retrospective review of patients underwent TIPS revision via the pull-through technique was performed. Transhepatic directly punctured stent was conducted if the portal vein could not be accessed via standard transjugular approach. Technical success was defined by recanalization of shunt. Clinical success was defined as bleeding interruption and ascites regression without pharmacological support. All patients were followed up by clinical evaluation and Doppler ultrasound. Results Between January 2010 and December 2016, a total of 63 patients underwent TIPS revision, and 14 of them could not be accessed via standard transjugular approaches owing to stenosis or occlusion of the hepatic vein. The pull-through technique was successful in 13 patients, and one patient underwent parallel TIPS. No procedure-related complication was observed. One patient died of liver failure one week after the procedure. During the follow-up, three patients developed hepatic encephalopathy, and one patient developed TIPS dysfunction again and experienced variceal bleeding. The primary patency rate after TIPS revision was 92% (11/12) at 12 months. Conclusion The pull-through technique was effective and safe for recanalization of TIPS inaccessible via standard transjugular approach.
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Stent Dysfunction After Transjugular Intrahepatic Portosystemic Shunt: A 14-Year Experience from a Single Tertiary Medical Center. IRANIAN JOURNAL OF RADIOLOGY 2017. [DOI: 10.5812/iranjradiol.15579] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Nicolas C, Le Gouge A, d’Alteroche L, Ayoub J, Georgescu M, Vidal V, Castaing D, Cercueil JP, Chevallier P, Roumy J, Trillaud H, Boyer L, Le Pennec V, Perret C, Giraudeau B, Perarnau JM, STIC-TIPS group. Evaluation of Doppler-ultrasonography in the diagnosis of transjugular intrahepatic portosystemic shunt dysfunction: A prospective study. World J Hepatol 2017; 9:1125-1132. [PMID: 29026464 PMCID: PMC5620422 DOI: 10.4254/wjh.v9.i27.1125] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/28/2017] [Revised: 08/24/2017] [Accepted: 09/05/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To prospectively evaluate the performance of Doppler-ultrasonography (US) for the detection of transjugular intrahepatic portosystemic shunt (TIPS) dysfunction within a multicenter cohort of cirrhotic patients.
METHODS This study was conducted in 10 french teaching hospitals. After TIPS insertion, angiography and liver Doppler-US were carried out every six months to detect dysfunction (defined by a portosystemic gradient ≥ 12 mmHg and/or a stent stenosis ≥ 50%). The association between ultrasonographic signs and dysfunction was studied by logistic random-effects models, and the diagnostic performance of each Doppler criterion was estimated by the bootstrap method. This study was approved by the ethics committee of Tours.
RESULTS Two hundred and eighteen pairs of examinations performed on 87 cirrhotic patients were analyzed. Variables significantly associated with dysfunction were: The speed of flow in the portal vein (P = 0.008), the reversal of flow in the right (P = 0.038) and left (P = 0.049) portal branch, the loss of modulation of portal flow by the right atrium (P = 0.0005), ascites (P = 0.001) and the overall impression of the operator (P = 0.0001). The diagnostic performances of these variables were low; sensitivity was < 58% and negative predictive value was < 73%. Therefore, dysfunction cannot be ruled out from Doppler-US.
CONCLUSION The performance of Doppler-US for the detection of TIPS dysfunction is poor compared to angiography. New tools are needed to improve diagnosis of TIPS dysfunction.
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Affiliation(s)
- Charlotte Nicolas
- Service d’Hépato-Gastroentérologie, Hôpital Trousseau, CHRU Tours, 37044 Tours, France
| | - Amélie Le Gouge
- CIC, CHRU de Tours, 37044 Tours, France
- INSERM, CIC 202, 37044 Tours, France
| | - Louis d’Alteroche
- Service d’Hépato-Gastroentérologie, Hôpital Trousseau, CHRU Tours, 37044 Tours, France
| | - Jean Ayoub
- Unité d’échographie-doppler, Hôpital Trousseau, CHRU Tours, 37044 Tours, France
| | - Monica Georgescu
- Unité d’échographie-doppler, Hôpital Trousseau, CHRU Tours, 37044 Tours, France
| | - Vincent Vidal
- Service de Radiologie, Hôpital de la Timone, 13385 Marseille, France
| | - Denis Castaing
- Centre Hépato-Biliaire, Hôpital Paul Brousse, 94800 Villejuif, France
| | | | - Patrick Chevallier
- Service d’Imagerie Médicale Diagnostique et interventionnelle Hôpital de l’Archet II Nice, 06200 Nice, France
| | - Jérôme Roumy
- Service de Radiologie et Echographie, CHRU Poitiers, 86021 Poitiers, France
| | - Hervé Trillaud
- Service d’Imagerie Médicale Hôpital Saint André, CHRU Bordeaux, 33000 Bordeaux, France
| | - Louis Boyer
- Service d’Imagerie viscérale et vasculaire, CHRU Clermont Ferrand, 63003 Clermont Ferrand, France
| | | | | | - Bruno Giraudeau
- CIC, CHRU de Tours, 37044 Tours, France
- INSERM, CIC 202, 37044 Tours, France
| | - Jean-Marc Perarnau
- Service d’Hépato-Gastroentérologie, Hôpital Trousseau, CHRU Tours, 37044 Tours, France
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Hirota S, Kobayashi K, Kako Y, Takaki H, Yamakado K. Balloon-occluded retrograde transvenous obliteration of varices: focusing on the portal hemodynamics and the recent techniques. Hepatol Int 2017; 12:102-111. [PMID: 28875380 DOI: 10.1007/s12072-017-9813-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2017] [Accepted: 07/25/2017] [Indexed: 02/06/2023]
Abstract
PURPOSE To evaluate the recent topics of Ballloon-occluded retrograde trasnvenous obliteration(B-RTO). METHOD We overviewed the recent scientific papers regarding B-RTO. RESULT B-RTO is a treatment method for occluding varices retrogradely using a sclerosing agent under balloon occlusion of a major draining vein. It has been recognized as an effective treatment method for gastric varices. Hepatic function reserve is improved and liver volume is increased after B-RTO. In recent years, various technical options, such as plug-assisted retrograde transvenous obliteration, coil-assisted retrograde transvenous obliteration, or foam B-RTO, have also been reported. In performing B-RTO, portal hemodynamics must be thoroughly examined radiologically. Judging the classification of the grade of collateral venous hemodynamics is important to select the appropriate embolization technique of B-RTO and to successfully occlude varices. Finally, the word "portosystemic shunt syndrome" has been proposed and the condition should be considered while selecting a treatment for gastric varices. CONCLUSION B-RTO is effective for gastrointestinal varices and portosystemic shunts.
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Affiliation(s)
- Shozo Hirota
- Department of Radiology, Hyogo College of Medicine, Mukogawacho 1-1, Nishinomiya, Japan.
| | - Kaoru Kobayashi
- Department of Radiology, Hyogo College of Medicine, Mukogawacho 1-1, Nishinomiya, Japan
| | - Yasukazu Kako
- Department of Radiology, Hyogo College of Medicine, Mukogawacho 1-1, Nishinomiya, Japan
| | - Haruyuki Takaki
- Department of Radiology, Hyogo College of Medicine, Mukogawacho 1-1, Nishinomiya, Japan
| | - Koichiro Yamakado
- Department of Radiology, Hyogo College of Medicine, Mukogawacho 1-1, Nishinomiya, Japan
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Luo SH, Chu JG, Huang H, Yao KC. Effect of initial stent position on patency of transjugular intrahepatic portosystemic shunt. World J Gastroenterol 2017; 23:4779-4787. [PMID: 28765699 PMCID: PMC5514643 DOI: 10.3748/wjg.v23.i26.4779] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 04/20/2017] [Accepted: 05/19/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate the effect of initial stent position on transjugular intrahepatic portosystemic shunt (TIPS).
METHODS We studied 425 patients from January 2004 to January 2015 with refractory ascites or variceal bleeding who required TIPS placement. Patients were randomly divided into group A (stent in hepatic vein, n = 57), group B (stent extended to junction of hepatic vein and inferior vena cava, n = 136), group C (stent in left branch of portal vein, n = 83) and group D (stent in main portal vein, n = 149). Primary unassisted patency was compared using Kaplan-Meier analysis, and incidence of recurrence of bleeding, ascites and hepatic encephalopathy (HE) were analyzed.
RESULTS The mean primary unassisted patency rate in group B tended to be higher than in group A at 3, 6 and 12 mo (P = 0.001, 0.000 and 0.005), and in group D it tended to be lower than in group C at 3, 6 and 12 mo (P = 0.012, 0.000 and 0.028). The median shunt primary patency time for group A was shorter than for group B (5.2 mo vs 9.1 mo, 95%CI: 4.3-5.6, P = 0.013, log-rank test), while for group C it was longer than for group D (8.3 mo vs 6.9 mo, 95%CI: 6.3-7.6, P = 0.025, log-rank test). Recurrence of bleeding and ascites in group A was higher than in group B at 3 mo (P = 0.014 and 0.020), 6 mo (P = 0.014 and 0.019) and 12 mo (P = 0.024 and 0.034. Recurrence in group D was higher than in group C at 3 mo (P = 0.035 and 0.035), 6 mo (P = 0.038 and 0.022) and 12 mo (P = 0.017 and 0.009). The incidence of HE was not significantly different among any of the groups (P = 0.965).
CONCLUSION The initial stent position can markedly affect stent patency, which potentially influences the risk of recurrent symptoms associated with shunt stenosis or occlusion.
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Ferral H, Gomez-Reyes E, Fimmel CJ. Post-Transjugular Intrahepatic Portosystemic Shunt Follow-Up and Management in the VIATORR Era. Tech Vasc Interv Radiol 2016; 19:82-8. [PMID: 26997092 DOI: 10.1053/j.tvir.2016.01.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The transjugular intrahepatic portosystemic shunt (TIPS) is a non-selective portosystemic shunt created using endovascular techniques. The first TIPS was performed in Germany in 1988. The VIATORR self-expandable PTFE covered stent-graft (WL Gore, Flagstaff AZ) was approved by the FDA for a TIPS application in December of 2004. This stent-graft offers excellent shunt patency rates and it is possible that it has a beneficial effect on patient survival. Patient surveillance and post-procedural management have changed after the introduction of this stent-graft. This article presents the current management strategies that are followed at our Institution for patients who have undergone a TIPS procedure with a VIATORR stent graft including imaging follow-up, management of encephalopathy, medical management and nutritional aspects.
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Affiliation(s)
- Hector Ferral
- The Department of Radiology, Section of Interventional Radiology, NorthShore University HealthSystem, Evanston, IL.
| | - Elisa Gomez-Reyes
- Departamento de Gastroenterologia, Instituto Nacional de la Nutricion Salvador Zubiran, Tlalpan, Mexico City, Mexico
| | - Claus J Fimmel
- University of Chicago Pritzker School of Medicine, Section Chief of Hepatology, Division of Gastroenterology, NorthShore University HealthSystem, Evanston, IL
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Zhang JL, Li YC, Li SW. Shunt stenosis or occlusion after transjugular intrahepatic portosystemic shunt. Shijie Huaren Xiaohua Zazhi 2015; 23:5311-5317. [DOI: 10.11569/wcjd.v23.i33.5311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Transjugular intrahepatic portosystemic shunt (TIPS) has been extensively used to treat the complications of portal hypertension and should be considered the first-line treatment for hemorrhage of acute esophagogastric varices caused by portal hypertension. However, stent stenosis or occlusion after TIPS is the main cause of shunt dysfunction and surgical failure. This paper aims to make a comprehensive review of stents, with the focus being on the development of stents and stent coat material, the reason of shunt stenosis or occlusion, and the revision of shunt.
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Pereira K, Baker R, Salsamendi J, Doshi M, Kably I, Bhatia S. An Approach to Endovascular and Percutaneous Management of Transjugular Intrahepatic Portosystemic Shunt (TIPS) Dysfunction: A Pictorial Essay and Clinical Practice Algorithm. Cardiovasc Intervent Radiol 2015; 39:639-651. [DOI: 10.1007/s00270-015-1247-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/25/2015] [Accepted: 11/07/2015] [Indexed: 12/22/2022]
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Abstract
The evolution of modern interventional radiology began over half century ago with a simple question. Was it possible to use the same diagnostic imaging tools that had revolutionized the practice of medicine to guide the real-time treatment of disease? This disruptive concept led to rapid treatment advances in every organ system of the body. It became clear that by utilizing imaging some patients could undergo targeted procedures, eliminating the need for major surgery, while others could undergo procedures for previously unsolvable problems. The breadth of these changes now encompasses all of medicine and has forever changed the way we think about disease. In this brief review article, major advances in the field, as chronicled in the pages of Radiology, will be described.
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Affiliation(s)
- Richard A Baum
- From the Department of Interventional Radiology, Brigham and Women's Hospital, Boston, Mass (R.A.B.); and Department of Radiology, University of Pennsylvania, 3600 Market St, Suite 370, Philadelphia, PA 19104 (S.B.)
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Perarnau JM, Le Gouge A, Nicolas C, d'Alteroche L, Borentain P, Saliba F, Minello A, Anty R, Chagneau-Derrode C, Bernard PH, Abergel A, Ollivier-Hourmand I, Gournay J, Ayoub J, Gaborit C, Rusch E, Giraudeau B. Covered vs. uncovered stents for transjugular intrahepatic portosystemic shunt: a randomized controlled trial. J Hepatol 2014; 60:962-8. [PMID: 24480619 DOI: 10.1016/j.jhep.2014.01.015] [Citation(s) in RCA: 135] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 01/14/2014] [Accepted: 01/14/2014] [Indexed: 12/16/2022]
Abstract
BACKGROUND & AIMS The first studies comparing covered stents (CS) and bare stents (BS) to achieve Transjugular Intrahepatic Portosystemic Shunt (TIPS) were in favor of CS, but only one randomized study has been performed. Our aim was to compare the primary patency of TIPS performed with CS and BS. METHODS The study was planned as a multicenter, pragmatic (with centers different in size and experience), randomized, single-blinded (with blinding of patients only), parallel group trial. The primary endpoint was TIPS dysfunction defined as either a portocaval gradient ⩾12mmHg, or a stent lumen stenosis ⩾50%. A transjugular angiography with portosystemic pressure gradient measurement was scheduled every 6months after TIPS insertion. RESULTS 137 patients were randomized: 66 to receive CS, and 71 BS. Patients who were found to have a hepato-cellular carcinoma, or whose procedure was cancelled were excluded, giving a sample of 129 patients (62 vs. 67). Median follow-up for CS and BS were 23.6 and 21.8months, respectively. Compared to BS, the risk of TIPS dysfunction with CS was 0.60 95% CI [0.38-0.96], (p=0.032). The 2-year rate of shunt dysfunction was 44.0% for CS vs. 63.6% for BS. Early post TIPS complications (22.4% vs. 34.9%), risk of hepatic encephalopathy (0.89 [0.53-1.49]) and 2-year survival (70% vs. 67.5%) did not differ in the two groups. The 2-year cost/patient was 20k€ [15.9-27.5] for CS vs. 23.4k€ [18-37] for BS (p=0.52). CONCLUSIONS CS provided a significant 39% reduction in dysfunction compared to BS. We did not observe any significant difference with regard to hepatic encephalopathy or death.
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Affiliation(s)
- Jean Marc Perarnau
- Service d'Hépato-Gastroentérologie, Hôpital Trousseau, CHRU Tours, France.
| | - Amélie Le Gouge
- INSERM, CIC 202, Tours, France; CHRU de Tours, Tours, France
| | - Charlotte Nicolas
- Service d'Hépato-Gastroentérologie, Hôpital Trousseau, CHRU Tours, France; Université François-Rabelais de Tours, PRES Centre-Val de Loire Université, Tours, France
| | - Louis d'Alteroche
- Service d'Hépato-Gastroentérologie, Hôpital Trousseau, CHRU Tours, France
| | - Patrick Borentain
- Service d'Hépato-Gastroentérologie, Hôpital de la Conception, Marseille, France
| | - Faouzi Saliba
- Service d'Hépato-Gastroentérologie, Hôpital Paul Brousse, Paris, France
| | - Anne Minello
- Service d'Hépato-Gastroentérologie, CHRU Dijon, France
| | - Rodolphe Anty
- Institut National de la Santé et de la Recherche Médicale (INSERM), U1065, Team 8, "Hepatic Complications in Obesity", Nice F-06204, Cedex 3, France; Centre Hospitalier Universitaire of Nice, Digestive Center, Nice F-06202, Cedex 3, France; University of Nice-Sophia-Antipolis, Faculty of Medecine, Nice F-06107, Cedex 2, France
| | | | | | - Armand Abergel
- Service d'Hépato-Gastroentérologie, CHRU Clermont-Ferrand, France
| | | | | | - Jean Ayoub
- Service d'Echographie Hôpital Trousseau, CHRU Tours, France
| | - Christophe Gaborit
- Service d'information médicale, épidémiologie et économie de la santé, CHRU Bretonneau, Tours, France
| | - Emmanuel Rusch
- Service d'information médicale, épidémiologie et économie de la santé, CHRU Bretonneau, Tours, France
| | - Bruno Giraudeau
- INSERM, CIC 202, Tours, France; CHRU de Tours, Tours, France; Université François-Rabelais de Tours, PRES Centre-Val de Loire Université, Tours, France
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The Evolution of Transjugular Intrahepatic Portosystemic Shunt: Tips. ISRN HEPATOLOGY 2014; 2014:762096. [PMID: 27335841 PMCID: PMC4890882 DOI: 10.1155/2014/762096] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/20/2013] [Accepted: 01/16/2014] [Indexed: 02/07/2023]
Abstract
Since Richter's description in the literature in 1989 of the first procedure on human patients, transjugular intrahepatic portosystemic shunt (TIPS) has been worldwide considered as a noninvasive technique to manage portal hypertension complications. TIPS succeeds in lowering the hepatic sinusoidal pressure and in increasing the circulatory flow, thus reducing sodium retention, ascites recurrence, and variceal bleeding. Required several revisions of the shunt TIPS can be performed in case of different conditions such as hepatorenal syndrome, hepatichydrothorax, portal vein thrombosis, and Budd-Chiari syndrome. Most of the previous studies on TIPS procedure were based on the use of bare stents and most patients chose TIPS 2-3 years after traditional treatment, thus making TIPS appear to be not superior to endoscopy in survival rates. Bare stents were associated with higher incidence of shunt failure and consequently patients required several revisions during the follow-up. With the introduction of a dedicated e-PTFE covered stent-graft, these problems were completely solved, No more reinterventions are required with a tremendous improvement of patient's quality of life. One of the main drawbacks of the use of e-PTFE covered stent-graft is higher incidence of hepatic encephalopathy. In those cases refractory to the conventional medical therapy, a shunt reduction must be performed.
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Zhao JB, Feng C, Zhu QH, He XF, Li YH, Chen Y. Transjugular intrahepatic portosystemic shunt with covered stents for hepatocellular carcinoma with portal vein tumor thrombosis. World J Gastroenterol 2014; 20:1602-1607. [PMID: 24587637 PMCID: PMC3925870 DOI: 10.3748/wjg.v20.i6.1602] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Revised: 11/13/2013] [Accepted: 12/13/2013] [Indexed: 02/06/2023] Open
Abstract
AIM: To evaluate transjugular intrahepatic portosystemic shunt (TIPS) with covered stents for hepatocellular carcinoma (HCC) with main portal vein tumor thrombus (PVTT).
METHODS: Eleven advanced HCC patients (all male, aged 37-78 years, mean: 54.3 ± 12.7 years) presented with acute massive upper gastrointestinal bleeding (n = 9) or refractory ascites (n = 2) due to tumor thrombus in the main portal vein. The diagnosis of PVTT was based on contrast-enhanced computed tomography and color Doppler sonography. The patients underwent TIPS with covered stents. Clinical characteristics and average survival time of 11 patients were analyzed. Portal vein pressure was assessed before and after TIPS. The follow-up period was 2-18 mo.
RESULTS: TIPS with covered stents was successfully completed in all 11 patients. The mean portal vein pressure was reduced from 32.0 to 11.8 mmHg (t = 10.756, P = 0.000). Gastrointestinal bleeding was stopped in nine patients. Refractory ascites completely disappeared in one patient and was alleviated in another. Hepatic encephalopathy was observed in six patients and was resolved with drug therapy. During the follow-up, ultrasound indicated the patency of the shunt and there was no recurrence of symptoms. Death occurred 2-14 mo (mean: 5.67 mo) after TIPS in nine cases, which were all due to multiple organ failure. In the remaining two cases, the patients were still alive at the 16- and 18-mo follow-up, respectively.
CONCLUSION: TIPS with covered stents for HCC patients with tumor thrombus in the main portal vein is technically feasible, and short-term efficacy is favorable.
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Sajja KC, Dolmatch BL, Rockey DC. Long-term follow-up of TIPS created with expanded poly-tetrafluoroethylene covered stents. Dig Dis Sci 2013; 58:2100-6. [PMID: 23381105 DOI: 10.1007/s10620-013-2578-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2012] [Accepted: 01/15/2013] [Indexed: 02/06/2023]
Abstract
BACKGROUND Transjugular intrahepatic portosystemic shunts (TIPS) created with expanded poly-tetrafluoroethylene-covered stents have largely replaced bare metal stents. Short-term shunt patency is typically assessed with protocol Doppler ultrasound (US), while little information exists with regard to long-term patency. AIM We investigated the value of Doppler US in assessing TIPS patency as well as long-term clinical outcomes. METHODS A retrospective analysis of 59 patients with covered stents used for TIPS between January 2001 and December 2011 was performed. RESULTS Fifty-four patients had early (median 9 days) Doppler US follow-up. Seven of eight patients with an abnormal baseline US required stent revisions. None of the 46 patients with normal baseline Doppler US required revisions within the first 6 months; six of these patients subsequently had a portogram because of symptoms, but all TIPS were patent. Fifty-two patients survived for long-term (>6 months) follow-up, averaging 654 days and three Doppler US exams. Five of six patients with abnormal follow-up Doppler US required revisions, whereas none of the 46 patients with normal follow-up US had revisions. The recurrence of symptoms of portal hypertension and/or hepatic encephalopathy (HE) was low (4/52 patients). No significant predictors of long-term stenosis were identified. Post-TIPS HE was independent of pre-TIPS HE or Child-Pugh score. CONCLUSIONS Short-term patency and that at approximately 2 years after TIPS placement was 87 and 77 %, respectively. We conclude that Doppler US at least 1 week after TIPS is warranted, but repeated Doppler US follow-up is probably not necessary in the absence of clinical symptoms.
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Affiliation(s)
- Krishna C Sajja
- Division of Digestive and Liver Diseases, University of Texas Southwestern Medical Center, 2140 Medical District Dr. #4022, Dallas, TX 75235, USA.
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Covered transjugular intrahepatic portosystemic shunts: accuracy of ultrasound in detecting shunt malfunction. AJR Am J Roentgenol 2013; 200:904-8. [PMID: 23521468 DOI: 10.2214/ajr.12.8761] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
OBJECTIVE The purpose of this study was to determine the accuracy of ultrasound for detecting transjugular intrahepatic portosystemic shunt (TIPS) malfunction in covered stents in comparison with bare metal stents. MATERIALS AND METHODS During a 6-year period, 126 TIPS angiography examinations were performed in 78 patients who had undergone a recent TIPS ultrasound examination. Radiology reports and images were retrospectively reviewed, and the sensitivity and specificity of sonographic parameters for detecting TIPS dysfunction were calculated using TIPS angiography and portosystemic gradient as the reference standards. RESULTS Of 126 paired studies, 43 were in bare metal TIPS and 83 were in covered TIPS. Peak shunt velocity of covered and bare metal TIPS measured by ultrasound showed comparable sensitivities for detection of shunt dysfunction, using both depressed (< 90 cm/s) and elevated (> 200 cm/s) peak shunt velocity criteria. However, a depressed velocity was more specific in covered TIPS (0.939 vs 0.550, p < 0.001) whereas elevated velocity was more specific in bare TIPS (0.485 vs 0.800, p = 0.041). An interval change in peak TIPS velocity greater than 25% was significantly more sensitive in detection of dysfunction in covered TIPS (0.815 vs 0.400, p = 0.015) whereas detection based on main portal vein velocities (≤ 30 cm/s) was not statistically different in the two groups. CONCLUSION Our data suggest that the accuracy of ultrasound for detection of TIPS shunt malfunction is at least as high in covered stents as in bare metal stents. Diagnostic performance for several sonographic parameters varied significantly between bare and covered stents, suggesting the need for optimization of sonographic criteria for covered stents.
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Luo X, Nie L, Tsauo J, Wang Z, Tang C, Li X. Parallel shunt for the treatment of transjugular intrahepatic portosystemic shunt dysfunction. Korean J Radiol 2013. [PMID: 23690708 DOI: 10.3348/kjr.2013.14.3.423.pmc3655295] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
OBJECTIVE To investigate the safety, efficacy and long-term patency of parallel shunts (PS) in the management of the transjugular intrahepatic portosystemic shunt (TIPS) dysfunction. MATERIALS AND METHODS Between March 2007 and October 2010, 18 patients (13 men and 5 women) who underwent TIPS revision with the creation of PS were evaluated retrospectively. In the first 10 patients, a 10-mm-diameter Wallgraft endoprosthesis was deployed; in the latter 8 patients, an 8-mm-diameter Fluency endoprosthesis was deployed. RESULTS The creation of PS was technically successful in all patients. The mean ± standard deviation portosystemic pressure gradient before and after the procedure was 25.5 ± 7.3 mm Hg (range, 16-37 mm Hg) and 10.9 ± 2.3 mm Hg (range, 7-16 mm Hg), respectively. The duration of follow-up was 16.7 ± 10.8 months (range, 6-42 months). The primary shunt patency rates at 12 months after the creation of PS was 70% with Wallgraft endoprostheses and 87.5% with Fluency endoprostheses. CONCLUSION TIPS revision with the creation of PS is a safe, effective and durable method for treating shunt dysfunction.
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Affiliation(s)
- Xuefeng Luo
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
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Luo X, Nie L, Tsauo J, Wang Z, Tang C, Li X. Parallel shunt for the treatment of transjugular intrahepatic portosystemic shunt dysfunction. Korean J Radiol 2013; 14:423-9. [PMID: 23690708 PMCID: PMC3655295 DOI: 10.3348/kjr.2013.14.3.423] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Accepted: 09/28/2012] [Indexed: 02/05/2023] Open
Abstract
Objective To investigate the safety, efficacy and long-term patency of parallel shunts (PS) in the management of the transjugular intrahepatic portosystemic shunt (TIPS) dysfunction. Materials and Methods Between March 2007 and October 2010, 18 patients (13 men and 5 women) who underwent TIPS revision with the creation of PS were evaluated retrospectively. In the first 10 patients, a 10-mm-diameter Wallgraft endoprosthesis was deployed; in the latter 8 patients, an 8-mm-diameter Fluency endoprosthesis was deployed. Results The creation of PS was technically successful in all patients. The mean ± standard deviation portosystemic pressure gradient before and after the procedure was 25.5 ± 7.3 mm Hg (range, 16-37 mm Hg) and 10.9 ± 2.3 mm Hg (range, 7-16 mm Hg), respectively. The duration of follow-up was 16.7 ± 10.8 months (range, 6-42 months). The primary shunt patency rates at 12 months after the creation of PS was 70% with Wallgraft endoprostheses and 87.5% with Fluency endoprostheses. Conclusion TIPS revision with the creation of PS is a safe, effective and durable method for treating shunt dysfunction.
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Affiliation(s)
- Xuefeng Luo
- Department of Gastroenterology, West China Hospital, Sichuan University, Chengdu 610041, China
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Kim HB, Choi YH, So YH, Min SK, Kim HC, Kim YI, Park JH, Chung JW. Tissue responses to endovascular stent grafts for saccular abdominal aortic aneurysms in a canine model. J Korean Med Sci 2012; 27:1170-6. [PMID: 23091313 PMCID: PMC3468752 DOI: 10.3346/jkms.2012.27.10.1170] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2012] [Accepted: 08/14/2012] [Indexed: 11/20/2022] Open
Abstract
We investigated tissue responses to endoskeleton stent grafts for saccular abdominal aortic aneurysms (AAAs) in canines. Saccular AAAs were made with Dacron patch in 8 dogs, and were excluded by endoskeleton stent grafts composed of nitinol stent and expanded polytetrafluoroethylene graft. Animals were sacrificed at 2 months (Group 1; n = 3) or 6 months (Group 2; n = 5) after the placement, respectively. The aortas embedding stent grafts were excised en bloc for gross inspection and sliced at 5 to 8 mm intervals for histopathologic evaluation. Stent grafts were patent in all except a dog showing a thrombotic occlusion in Group 2. In the 7 dogs with patent lumen, the graft overhanging the saccular aneurysm was covered by thick or thin thrombi with no endothelial layer, and the graft over the aortic wall was completely covered by neointima with an endothelial layer. Transgraft cell migration was less active at an aneurysm than at adjacent normal aorta. In conclusion, endoskeleton stent grafts over saccular aneurysms show no endothelial coverage and poor transgraft cell migration in a canine model.
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Affiliation(s)
- Hyun Beom Kim
- Department of Radiology, National Cancer Center, Goyang, Korea
| | - Young Ho Choi
- Department of Radiology, Seoul National University Boramae Hospital, Seoul, Korea
| | - Young Ho So
- Department of Radiology, Seoul National University Boramae Hospital, Seoul, Korea
| | - Seung-Kee Min
- Department of Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Hyo-Cheol Kim
- Department of Radiology and Institute of Radiation Medicine, Seoul National University College of Medicine, Clinical Research Institute, Seoul, Korea
| | - Young Il Kim
- Department of Radiology and Institute of Radiation Medicine, Seoul National University College of Medicine, Clinical Research Institute, Seoul, Korea
| | - Jae Hyung Park
- Department of Radiology and Institute of Radiation Medicine, Seoul National University College of Medicine, Clinical Research Institute, Seoul, Korea
| | - Jin Wook Chung
- Department of Radiology and Institute of Radiation Medicine, Seoul National University College of Medicine, Clinical Research Institute, Seoul, Korea
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Saad WEA, Darcy MD. Transjugular Intrahepatic Portosystemic Shunt (TIPS) versus Balloon-occluded Retrograde Transvenous Obliteration (BRTO) for the Management of Gastric Varices. Semin Intervent Radiol 2012; 28:339-49. [PMID: 22942552 DOI: 10.1055/s-0031-1284461] [Citation(s) in RCA: 76] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Variceal bleeding is one of the major complications of portal hypertension. Gastric variceal bleeding is less common than esophageal variceal bleeding; however, it is associated with a high morbidity and mortality rate and its management is largely uncharted due to a relatively less-established literature. In the West (United States and Europe), the primary school of management is to decompress the portal circulation utilizing the transjugular intrahepatic portosystemic shunt (TIPS). In the East (Japan and South Korea), the primary school of management is to address the gastric varices (GVs) specifically by sclerosing them utilizing the balloon-occluded retrograde transvenous obliteration (BRTO) procedure. The concept (1970s), evolution, and development (1980s-1990s) of both procedures run parallel to one another; neither is newer than the other is. The difference is that one was adopted mostly by the East (BRTO), while the other has been adopted mostly by the West (TIPS). TIPS is effective in emergently controlling bleeding for GVs even though the commonly referenced studies about managing GVs with TIPS are studies with TIPS created by bare stents. However, the results have improved with the use of stent grafts for creating TIPS. Nevertheless, TIPS cannot be tolerated by patients with poor hepatic reserve. BRTO is equally effective in controlling bleeding GVs as well as significantly reducing the GV rebleed rate. But the resultant diversion of blood flow into the portal circulation, and in turn the liver, increases the risk of developing esophageal varices and ectopic varices with their potential to bleed. Unlike TIPS, the blood diversion that occurs after BRTO improves, if not preserves, hepatic function for 6-9 months post-BRTO. The authors discuss the detailed results and critique the literature, which has evaluated and remarked on both procedures. Future research prospects and speculation as to the ideal patients for each procedure are discussed.
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Vo NJ, Shivariam G, Andrews RT, Vaidya S, Healey PJ, Horslen SP. Midterm Follow-up of Transjugular Intrahepatic Portosystemic Shunts Using Polytetrafluoroethylene Endografts in Children. J Vasc Interv Radiol 2012; 23:919-24. [DOI: 10.1016/j.jvir.2012.04.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2011] [Revised: 03/30/2012] [Accepted: 04/04/2012] [Indexed: 02/06/2023] Open
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Cejna M. Should stent-grafts replace bare stents for primary transjugular intrahepatic portosystemic shunts? Semin Intervent Radiol 2011; 22:287-99. [PMID: 21326707 DOI: 10.1055/s-2005-925555] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Transjugular intrahepatic portosystemic shunt (TIPS) creation using bare stents is a second-line treatment for complications of portal hypertension due in part to the relatively high number of reinterventions and the occurrence of new or worsened encephalopathy. Initially, custom-made stent-grafts were used for TIPS revision in cases of biliary fistulae. Subsequently, custom stent-grafts were used for de novo TIPS creation. With the introduction of the VIATORR(®) TIPS endoprosthesis a dedicated stent-graft became available for TIPS creation and revision. The VIATORR(®) demonstrated its efficacy and superiority to uncovered stents in retrospective analyses, case-matched analyses, and randomized studies. The improved patency of stent-grafts has led many to requestion the role of TIPS as a second-line therapy. Currently, randomized trials are warranted to redefine the role of TIPS in the treatment of complications of portal hypertension.
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Affiliation(s)
- Manfred Cejna
- Section of Interventional Radiology, Vienna Medical School, Austria; and Department of Radiology, LKH Feldkirch, Feldkirch, Austria
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Saad WEA, Darwish WM, Davies MG, Waldman DL. Stent-grafts for transjugular intrahepatic portosystemic shunt creation: specialized TIPS stent-graft versus generic stent-graft/bare stent combination. J Vasc Interv Radiol 2011; 21:1512-20. [PMID: 20801686 DOI: 10.1016/j.jvir.2010.06.009] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2008] [Revised: 05/27/2010] [Accepted: 06/11/2010] [Indexed: 12/13/2022] Open
Abstract
PURPOSE To compare functional and anatomic outcomes of transjugular intrahepatic portosystemic shunts (TIPSs) created with the specialized Viatorr stent versus a Wallstent/Fluency stent combination. MATERIALS AND METHODS Retrospective review of patients who underwent TIPS creation with stent-grafts was conducted over a 54-month period ending in June 2008. Patients were divided into three groups: Viatorr only, Fluency only, and combined Viatorr/Fluency, the latter of which was included in the overall evaluation but excluded from the comparative analysis between the Viatorr and Fluency groups. Patient demographics, Child-Pugh scores, and portosystemic gradient (PSG) reduction were compared. Patencies were calculated using the Kaplan-Meier method and compared. RESULTS A total of 126 TIPSs created with stent-grafts were found: 28 with Fluency stents, 93 with Viatorr devices, and five combined. No significance in demographic factors or PSGs was found among groups (P > .05). Major encephalopathy rates were 3.6% and 4.3% in the Fluency and Viatorr groups, respectively (P = 1.000). Hemodynamic success rates were 93% and 98% in the Fluency and Viatorr groups, respectively (P = .099). The primary unassisted patency rates at 6, 9, and 12 months were 87%, 81%, and 81%, respectively, in the Fluency group and 95%, 93%, and 89%, respectively, in the Viatorr group (P = .03). Portal and hepatic end stenoses were the causes of TIPS narrowing in the Fluency and Viatorr groups, respectively. CONCLUSIONS The Wallstent/Fluency stent combination is associated with a 1-year patency rate greater than 80%, with no significant difference versus the Viatorr stent regarding technical and hemodynamic success and encephalopathy rate. However, the Viatorr stent is associated with improved patency (89%) versus this bare stent/stent-graft combination.
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Affiliation(s)
- Wael E A Saad
- Department of Radiology, University of Virginia Health System, 1215 Lee St, PO Box 800170, Charlottesville, VA 22908, USA
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Jirkovsky V, Fejfar T, Safka V, Hulek P, Krajina A, Chovanec V, Raupach J, Lojik M, Vanasek T, Renc O, Ali SM. Influence of the secondary deployment of expanded polytetrafluoroethylene-covered stent grafts on maintenance of transjugular intrahepatic portosystemic shunt patency. J Vasc Interv Radiol 2010; 22:55-60. [PMID: 21106389 DOI: 10.1016/j.jvir.2010.09.016] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2008] [Revised: 04/14/2010] [Accepted: 09/02/2010] [Indexed: 01/12/2023] Open
Abstract
PURPOSE To evaluate the effects of secondary deployment of expanded polytetrafluoroethylene (ePTFE)-covered stent grafts in the treatment of dysfunctional transjugular intrahepatic portosystemic shunts (TIPSs) in comparison with other common approaches (conventional angioplasty or implantation of bare metal stents). MATERIALS AND METHODS A retrospective review of 121 dysfunctional bare metal TIPS presenting between 2000 and 2004 was conducted. The group was divided into four subgroups according to the type of intervention: conventional angioplasty (52 cases; 43%), bare metal stent deployment (35 cases; 28.9%), nondedicated ePTFE-covered stent-graft deployment (15 cases; 12.4%), and dedicated ePTFE-covered stent-graft deployment (19 cases; 15.7%). In all four groups, the primary patency after the specific intervention was calculated and mutually compared. RESULTS Primary patency rates after 12 and 24 months were 49.7% and 25.3%, respectively, in conventional angioplasty; 74.9% and 64.9%, respectively, with bare metal stents; 75.2% and 64.5%, respectively, with nondedicated ePTFE-covered stent grafts; and 88.1% and 80.8%, respectively, with dedicated ePTFE-covered stent grafts. CONCLUSIONS In the treatment of dysfunctional TIPS, better patency after the intervention was obtained by deploying dedicated ePTFE-covered stent grafts in comparison with conventional angioplasty, bare metal stents, and nondedicated ePTFE-covered stents.
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Affiliation(s)
- Vaclav Jirkovsky
- Second Department of Internal Medicine, Teaching Hospital of Charles University, Sokolska, Hradec Králové, Czech Republic.
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Yang Z, Han G, Wu Q, Ye X, Jin Z, Yin Z, Qi X, Bai M, Wu K, Fan D. Patency and clinical outcomes of transjugular intrahepatic portosystemic shunt with polytetrafluoroethylene-covered stents versus bare stents: a meta-analysis. J Gastroenterol Hepatol 2010; 25:1718-25. [PMID: 21039832 DOI: 10.1111/j.1440-1746.2010.06400.x] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
BACKGROUND AND AIM Transjugular intrahepatic portosystemic shunt (TIPS) with polytetrafluoroethylene-(PTFE)-covered stent has been increasingly used for patients with complications of portal hypertension. It is still debated whether the new endoprostheses will improve some clinical outcomes (except for shunt patency) compared to the bare stents. The aims of our meta-analysis were to explore the patency and clinical outcomes of TIPS with PTFE-covered stent-grafts versus bare stents. METHODS Pertinent studies were retrieved through PubMed (1950-2010), MEDLINE (1950-2010), and reference lists of key articles. Outcome measures were primary patency, risk of encephalopathy and survival. Time-to-event data analysis was used to calculate the overall hazard ratios (HR). RESULTS Six studies were identified including a total of 1275 patients (346 TIPS with PTFE-covered stent-grafts and 929 TIPS with bare stents). Pooled shunt patency data from four eligible studies suggested a significant improvement of primary patency in patients who were treated with PTFE-covered stent-grafts (HR = 0.28, 95% confidence interval [CI] 0.20-0.35). Pooled encephalopathy data from three eligible studies suggested a significant reduction of risk in the PTFE-covered group (HR = 0.65, 95%CI 0.45-0.86). Pooled survival data from four eligible studies also suggested a significant decrease of mortality in the PTFE-covered group (HR = 0.76, 95%CI 0.58-0.94). No statistical heterogeneity was observed between studies for either outcome. CONCLUSIONS This meta-analysis shows that the use of PTFE-covered stent-grafts clearly improves shunt patency without increasing the risk of hepatic encephalopathy and with a trend towards better survival.
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Affiliation(s)
- Zhiping Yang
- Xijing Hospital of Digestive Diseases, Fourth Military Medical University, Xi'an, China
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Multidetector-Row Computed Tomography in the Evaluation of Transjugular Intrahepatic Portosystemic Shunt Performed with Expanded-Polytetrafluoroethylene-Covered Stent-Graft. Cardiovasc Intervent Radiol 2010; 34:100-5. [DOI: 10.1007/s00270-010-9902-2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2009] [Accepted: 05/10/2010] [Indexed: 01/30/2023]
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Pull-through technique for recanalization of occluded portosystemic shunts (TIPS): technical note and review of the literature. Cardiovasc Intervent Radiol 2010; 34:406-12. [PMID: 20440498 DOI: 10.1007/s00270-010-9874-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2010] [Accepted: 04/15/2010] [Indexed: 02/07/2023]
Abstract
Transjugular intrahepatic portosystemic shunt (TIPS) dysfunction is an important problem after creation of shunts. Most commonly, TIPS recanalization is performed via the jugular vein approach. Occasionally it is difficult to cross the occlusion. We describe a hybrid technique for TIPS revision via a direct transhepatic access combined with a transjugular approach. In two cases, bare metal stents or polytetrafluoroethylene (PTFE)-covered stent grafts had been placed in TIPS tract previously, and they were completely obstructed. The tracts were inaccessible via the jugular vein route alone. In each case, after fluoroscopy or computed tomography-guided transhepatic puncture of the stented segment of the TIPS, a wire was threaded through the shunt and snared into the right jugular vein. The TIPS was revised by balloon angioplasty and additional in-stent placement of PTFE-covered stent grafts. The patients were discharged without any complications. Doppler sonography 6 weeks after TIPS revision confirmed patency in the TIPS tract and the disappearance of ascites. We conclude that this technique is feasible and useful, even in patients with previous PTFE-covered stent graft placement.
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Transjugular intrahepatic portosystemic shunt with an autologous endothelial progenitor cell seeded stent: a porcine model. Acad Radiol 2010; 17:358-67. [PMID: 19962914 DOI: 10.1016/j.acra.2009.10.007] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2009] [Revised: 10/09/2009] [Accepted: 10/12/2009] [Indexed: 01/07/2023]
Abstract
RATIONALE AND OBJECTIVES To evaluate the efficacy of a self-expanding metal stent seeded with autologous endothelial progenitor cells (EPCs) for preventing in-stent stenoses in transjugular intrahepatic portosystemic shunt (TIPS) in a swine model. MATERIALS AND METHODS TIPS was performed in 18 young adult pigs, using a self-expanding nitinol stent (control, n = 8) and an autologous EPC-seeded stent (treatment, n = 10). All pigs were sacrificed at 2 weeks post-TIPS procedure. Portography was performed immediately before the euthanasia. Gross, microscopic, and immunohistochemistry of the TIPS tract specimens were examined. The proliferative response of the shunt was quantified histologically. RESULTS TIPS was performed successfully in 16 swine, 2 animals died during the procedure. Another pig died of unknown causes 2 days post-procedure. At day 14 follow-up, portography and necropsy of the 15 remaining swine demonstrated that five shunts occluded and one shunt was stenotic (80%) in the control group (n = 6). Five shunts remained patent, two shunts were stenosed (50%, 70%), and the remaining two shunts were occluded in the treatment group (n = 9). The patency rate was significantly lower in the control group than in the treatment group, 0% versus 55.6% (P = .03). Histological analyses showed a significantly greater pseudointimal hyperplasia in the TIPS track of the control group than that of the treatment group (P < .05). Intact endothelium was documented in the lumina of all the EPC-implanted stent group. CONCLUSIONS The EPC-seeded metal stent is feasibly fabricated in vitro and improves the patency in TIPS in a porcine model.
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Management of refractory hepatic encephalopathy after insertion of TIPS: long-term results of shunt reduction with hourglass-shaped balloon-expandable stent-graft. AJR Am J Roentgenol 2010; 193:1696-702. [PMID: 19933667 DOI: 10.2214/ajr.09.2968] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
OBJECTIVE The purpose of this study was to review the use of an hourglass-shaped expanded polytetrafluoroethylene (ePTFE) stent-graft to reduce transjugular intrahepatic portosystemic shunts in patients with hepatic encephalopathy refractory to conventional medical therapy. MATERIALS AND METHODS From January 2000 through December 2008, 189 transjugular intrahepatic portosystemic shunt procedures were performed with self-expanding stent-grafts. After a mean period of 43.4 +/- 57 weeks, hepatic encephalopathy developed in 12 patients and did not respond to conventional medical therapy with lactulose, nonabsorbable antibiotics, and a protein-restricted diet. In all cases, shunt reduction was performed with an hourglass-shaped balloon-expandable ePTFE stent-graft inserted into the original shunt. RESULTS Technically successful shunt reduction with an immediate increase in portosystemic gradient was achieved in all patients. Symptoms of hepatic encephalopathy disappeared a mean of 22.3 hours (range, 18-26 hours) after the procedure. After a mean follow-up period of 73.9 +/- 61.88 weeks, no recurrence of hepatic encephalopathy was found. One patient (8.3%) needed dilation of the hourglass-shaped stent-graft after 37 weeks because of recurrence of ascites. At the end of the study, five patients (41.6%) were alive in good clinical condition. Four patients (33.3%) died of cardiovascular failure 1, 2, 24, and 96 weeks after the corrective procedure. Eight months after the reduction procedure, one patient (8.3%) underwent orthotopic liver transplantation, which resulted in clinical improvement. Two patients (16.6%) were lost to follow-up 15.6 and 46.8 weeks after the procedure. CONCLUSION Shunt reduction with an hourglass-shaped ePTFE balloon-expandable stent-graft seems effective in reducing shunt flow and rapidly improving the patient's clinical condition. With this technique, shunt diameter can be modified on the basis of the patient's clinical condition.
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Clark TWI. Stepwise placement of a transjugular intrahepatic portosystemic shunt endograft. Tech Vasc Interv Radiol 2009; 11:208-11. [PMID: 19527846 DOI: 10.1053/j.tvir.2009.04.002] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Endografts continue to evolve the role of transjugular intrahepatic portosystemic shunts for patients with complications of portal hypertension. Transjugular intrahepatic portosystemic shunt (TIPS) created with bare stents, although associated with high rates of short-term portal decompression, are plagued by shunt stenosis and thrombosis over the long term. In contrast, TIPS created with endografts achieve durable, sustained patency in most patients with portal hypertension. The technique of successful endograft placement does have technical nuances that differ from TIPS creation with bare stents. This article provides a step-by-step approach for the interventional radiologist for placement of the via Torr device, which is at currently the only US Food and Drug Administration approved endograft for TIPS. These techniques can also be applied to the creation of TIPS endografts using other off-label endograft devices.
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Affiliation(s)
- Timothy W I Clark
- Section of Vascular and Interventional Radiology, Department of Radiology, New York University School of Medicine, 560 First Avenue, HE-221, New York, NY 10016, USA.
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Owen AR, Stanley AJ, Vijayananthan A, Moss JG. The transjugular intrahepatic portosystemic shunt (TIPS). Clin Radiol 2009; 64:664-74. [PMID: 19520210 DOI: 10.1016/j.crad.2008.09.017] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2008] [Revised: 09/16/2008] [Accepted: 09/21/2008] [Indexed: 02/07/2023]
Abstract
The creation of an intrahepatic portosystemic shunt via a transjugular approach (TIPS) is an interventional radiological procedure used to treat the complications of portal hypertension. TIPS insertion is principally indicated to prevent or arrest variceal bleeding when medical or endoscopic treatments fail, and in the management refractory ascites. This review discusses the development and execution of the technique, with focus on its clinical efficacy. Patient selection, imaging surveillance, revision techniques, and complications are also discussed.
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Affiliation(s)
- A R Owen
- Department of Radiology, Austin Health, Heidelberg, Melbourne, Australia.
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Abstract
OBJECTIVE Transjugular intrahepatic portosystemic shunt (TIPS) creation is an effective method to control portal hypertension. TIPS creations with bare stents have shown limited and unpredictable patency. In nearly all cases of rebleeding or recurrent ascites after TIPS creation, there is shunt stenosis or occlusion. The purpose of this article is to review the biologic and technical factors that predispose to TIPS failure and how the use of an expandable polytetrafluoroethylene (PTFE)-covered-stent has significantly improved TIPS patency. CONCLUSION Biologic and technical factors may predispose to shunt failure. The combination of improved technique and expandable PTFE has significantly improved TIPS patency. The need for follow-up venography and secondary interventions has been reduced significantly as a result of improved shunt patency.
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Suhocki PV, Smith AD, Tendler DA, Sexton DJ. Treatment of TIPS/biliary fistula-related endotipsitis with a covered stent. J Vasc Interv Radiol 2008; 19:937-9. [PMID: 18503911 DOI: 10.1016/j.jvir.2008.01.026] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2007] [Revised: 01/24/2008] [Accepted: 01/24/2008] [Indexed: 12/15/2022] Open
Abstract
"Infective endotipsitis" describes a recurrent bacteremia or fungemia in patients with a transjugular intrahepatic portosystemic shunt (TIPS) in place and no other identifiable source of infection. The present report describes a patient who developed polymicrobial endotipsitis 6 years after TIPS creation. Blood cultures remained positive for polymicrobial growth despite long courses of antibiotic therapy. Communication between the TIPS and an infected biliary tree, precipitated by cholecystitis, was ultimately recognized. The biliary/TIPS fistula was closed with a polytetrafluoroethylene-covered stent. The patient remains asymptomatic and follow-up blood cultures remain negative with a low dose of oral antibiotics 2 years after the procedure.
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Affiliation(s)
- Paul V Suhocki
- Department of Radiology, Duke University Medical Center, Durham, North Carolina 27710, USA.
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Park SW, Cha IH, Kim CH, Jeon HJ, Park JH, Hong SJ, Lee IS. improved patency of transjugular intrahepatic portosystemic shunt: the efficacy of cilostazol for the prevention of pseudointimal hyperplasia in swine TIPS models. Cardiovasc Intervent Radiol 2007; 30:719-24. [PMID: 17450400 DOI: 10.1007/s00270-007-9001-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
PURPOSE To investigate the efficacy of oral administration of cilostazol to inhibit pseudointimal/intimal hyperplasia in swine TIPS models. METHODS Successful TIPS creation was carried out in 11 of 12 healthy young pigs (20-25 kg). In the treatment group (n = 6), both cilostazol and aspirin were administered daily, from the first day of TIPS creation. The control group (n = 5) was administered only aspirin. The animals were followed-up for 2 weeks and then killed. The specimen (including portal vein, hepatic parenchymal tract, hepatic vein, and inferior vena cava) and stents were carefully bisected in a longitudinal fashion. The control group was compared with the treatment group by means of a gross and histologic evaluation of the degree of pseudointimal/intimal hyperplasia in the shunt. RESULTS At the gross evaluation, the control group showed considerably more pseudointimal/intimal hyperplasia than the treatment group. Using microscopic evaluation, there was a statistically significant difference (p < 0.05) in the mean maximum pseudointimal/intimal hyperplasia thickness between the control group (2.97 +/- 0.33 mm) and treatment group (0.73 +/- 0.27 mm). CONCLUSION Oral administration of cilostazol may have been effective in reducing pseudointimal/intimal hyperplasia in swine TIPS models.
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Affiliation(s)
- Sang Woo Park
- Department of Diagnostic Radiology, Konkuk University Hospital, Konkuk University School of Medicine, Seoul, Korea.
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Pianta M, Tran N, Given M, Lyon SM. Direct percutaneous portocaval shunt creation for haematemesis: Case Report. ACTA ACUST UNITED AC 2007; 51 Suppl:B328-30. [DOI: 10.1111/j.1440-1673.2007.01806.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bureau C, Garcia Pagan JC, Layrargues GP, Metivier S, Bellot P, Perreault P, Otal P, Abraldes JG, Peron JM, Rousseau H, Bosch J, Vinel JP. Patency of stents covered with polytetrafluoroethylene in patients treated by transjugular intrahepatic portosystemic shunts: long-term results of a randomized multicentre study. Liver Int 2007; 27:742-7. [PMID: 17617116 DOI: 10.1111/j.1478-3231.2007.01522.x] [Citation(s) in RCA: 211] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
An 80% dysfunction rate at 2 years limits the use of transjugular intrahepatic portosystemic shunts (TIPS) in the treatment of complications of portal hypertension. The use of covered stents could improve shunt patency; however, long-term effect and safety remain unknown. Eighty patients randomized to be treated by TIPS either with a covered stent (Group 1) or an uncovered prosthesis (Group 2) were followed-up for 2 years. Doppler US was performed every 3 months. Angiography and portosystemic pressure gradient measurement were performed every 6 months or whenever dysfunction was suspected. Actuarial rates of primary patency in Groups 1 and 2 were 76% and 36% respectively (P=0.001). Clinical relapse occurred in four patients (10%) in Group 1 and 12 (29%) in Group 2 (P<0.05). Actuarial rates of being free of encephalopathy were 67% in Group 1 and 51% in Group 2 (P<0.05). Probability of survival was 58% and 45% at 2 years, respectively, in Groups 1 and 2 (NS). The mean Child-Pugh score improved only in Group 1 (from 8.1+/-1.6 to 7+/-2.2 at 2 years -P<0.05). We also compared the Doppler-US parameters between patent and dysfunctioning shunts. In patent shunts, the mean velocity within the portal vein was significantly higher but the performance of Doppler-US was not accurate enough to predict shunt dysfunction. In conclusion, the improvement in TIPS patency by using covered prostheses is maintained over time with a decreased risk of encephalopathy, while the risk of death was not increased.
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Affiliation(s)
- Christophe Bureau
- Federation Digestive Purpan, Service Hepato-Gastro-Enterologie CHU Toulouse, Toulouse, France.
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Hiraki T, Pavcnik D, Uchida BT, Timmermans HA, Wu RH, Niyyati M, Keller FS, Rösch J. Small intestinal submucosa sandwich Zilver stent-grafts for TIPS: experimental pilot study in swine. MINIM INVASIV THER 2007; 14:32-8. [PMID: 16754151 DOI: 10.1080/13645700510010818] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
The aim of this study was the evaluation of preliminary suitability of the piglet small intestinal submucosa (SIS) sandwich Zilver endograft for experimental transjugular intrahepatic portosystemic shunt (TIPS) creation. TIPS was created in six swine. The five surviving animals underwent the follow-up portogram and were sacrificed at four weeks after TIPS creation. Gross and histologic examination was performed in all animals. TIPS creation was successful in all animals. One animal died four days after TIPS creation. In the five surviving animals, one shunt was occluded and four shunts were stenosed on the follow-up portogram. The mean percentage narrowing of the most advanced stenoses was 72% (range, 60%-100%). The most advanced stenosis was located in the parenchymal tract in three shunts and in the hepatic vein portion in one shunt. Gross and histologic examination showed abundant neointimal formation composed mainly of fibroblasts leading to the significant shunt stenoses. The piglet SIS sandwich Zilver stent-graft was found to offer only limited TIPS patency and should not be used for the definitive long-term TIPS study.
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Affiliation(s)
- T Hiraki
- Dotter Interventional Institute, Oregon Health and Science University, Portland, Oregon 97239, USA
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Dolmatch B, Dong YH, Heeter Z. Evaluation of Three Polytetrafluoroethylene Stent-Grafts in a Model of Neointimal Hyperplasia. J Vasc Interv Radiol 2007; 18:527-34. [PMID: 17446544 DOI: 10.1016/j.jvir.2007.02.011] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
PURPOSE The authors tested three different porosities of expanded polytetrafluoroethylene (ePTFE)-covered stents and bare stents by using an animal model of restenosis. MATERIALS AND METHODS Both iliac arteries in 18 female pigs were injured by overdilating 20-mm-long angioplasty balloons. A 40-mm-long bare stent or one of three 44-mm-long ePTFE-covered stents was deployed at the injury site. To determine restenosis, neointimal area measurements were made with intravascular ultrasonography. Histologic analyses were performed at an independent laboratory to determine neointimal attachment. RESULTS Neointimal area was greatest at the middle of the bare stent, where balloon injury was centered. When the middle location of the covered stents was evaluated, the neointimal area of both the medium- and high-porosity covered stents was smaller than that of the matched control stents (P = .0018 and P = .0118, respectively). The neointimal area of the low-porosity covered stents was similar to that of the bare stents. Histologic study showed dehiscence of the neointima of the low-porosity covered stents. CONCLUSIONS The microstructure of the low-porosity covered stents did not provide a suitable surface for neointimal attachment and did not reduce neointimal growth compared to that with the control stents. The microstructure of the medium- and high-porosity covered stents yielded less neointimal growth than both the control stents and the low-porosity covered stents without evidence of neointimal dehiscence. The authors believe that covered stents made with ePTFE with either medium or high porosity could limit restenosis in humans compared to that with bare stents.
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Affiliation(s)
- Bart Dolmatch
- UT Southwestern Medical Center at Dallas, 5323 Harry Hines Blvd, Dallas, TX 75390, USA
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García-Pagán JC. [Covered transjugular intrahepatic portosystemic shunts]. GASTROENTEROLOGIA Y HEPATOLOGIA 2007; 29:647-51. [PMID: 17198643 DOI: 10.1157/13095210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Transjugular intrahepatic portosystemic shunts (TIPS) consist of a connection created by methods of interventionist radiology between the vena porta and the vena cava through the hepatic parenchyma. By markedly decreasing the portal pressure gradient, TIPS are highly effective in controlling the complications of portal hypertension such as bleeding due to esophageal varices and refractory ascites. Nevertheless, with the use of uncovered stents, the probability of shunt dysfunction -with the consequent reappearance of portal hypertension and its complications- is very high. The use of expandable polytetrafluoroethylene (e-PTFE)-covered stents markedly reduces the incidence of dysfunction, thus decreasing the number of clinical recurrences of portal hypertension and the reinterventions required to maintain shunt patency. The greater effectiveness of e-PTFE-covered stents is not accompanied by a higher incidence of complications or hepatic encephalopathy. Therefore, e-PTFE-covered stents should be preferred over uncovered stents in the management of the complications of portal hypertension.
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Affiliation(s)
- Juan Carlos García-Pagán
- Laboratorio de Hemodinámica Hepática, Unidad de Hepatología, Institut de Malalties Digestives i Metaboliques, IDIBAPS, Hospital Clínic, Barcelona, España.
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Gandini R, Konda D, Simonetti G. Transjugular intrahepatic portosystemic shunt patency and clinical outcome in patients with Budd-Chiari syndrome: covered versus uncovered stents. Radiology 2006; 241:298-305. [PMID: 16908675 DOI: 10.1148/radiol.2411050347] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
PURPOSE To retrospectively compare primary patency and reintervention rates, clinical outcome, and improvement in hepatic dysfunction (Child-Pugh score) in patients with Budd-Chiari syndrome treated with transjugular intrahepatic portosystemic shunt (TIPS) using bare stents or expanded polytetrafluoroethylene (PTFE)-covered stents. MATERIALS AND METHODS Approval of study and treatment protocol and waiver of informed consent for the retrospective study were obtained from institutional review board. Informed consent was obtained from each patient before procedure. Four male and nine female consecutive patients (mean age, 35.7 years) with Budd-Chiari syndrome treated with TIPS from January 1994 to November 2003 were included. In six patients, TIPS creation was performed with bare stents (group A). After April 2001, TIPS creation was performed in seven patients with expanded PTFE-covered stent-grafts (group B). Follow-up (group A mean, 22.7 months +/- 10.53 [standard deviation]; group B mean, 23.1 months +/- 7.81) was performed at 7 days, 30 days, and 3 months and subsequently every 3 months. Liver function was evaluated every 3 months. Primary end points were 6- and 12-month TIPS patency rates. Secondary end points were reintervention rate and clinical outcome. Patency rates were estimated (Kaplan-Meier method) and compared (log-rank test). Continuous (Mann-Whitney U test) and categoric (chi(2) test) data were compared. Significant differences before and after treatment were determined (Wilcoxon test). RESULTS Mean primary patency duration was 4.46 months +/- 3.40 in group A and 22.29 months +/- 8.15 in group B. In group B, a significant increase in primary patency rate (100% and 85.7% vs 16.7% and 0% at 6 and 12 months; P < .001, log-rank test) and a decrease in reintervention rate (0.29 +/- 0.49 vs 6.17 +/- 1.72, P < .001) were observed. Both groups had a significantly decreased Child-Pugh score; group B had a more persistent and significantly higher reduction. CONCLUSION Expanded PTFE-covered stent-grafts significantly increased primary patency rate of TIPS in patients with Budd-Chiari syndrome, with reduced reintervention rate and prolonged clinical improvement.
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Affiliation(s)
- Roberto Gandini
- Department of Diagnostic Imaging and Interventional Radiology, University of Tor Vergata, Viale Oxford 81, 00133 Rome, Italy
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Lake D, Guimaraes M, Ackerman S, Hannegan C, Schonholz C, Selby JB, Uflacker R. Comparative results of Doppler sonography after TIPS using covered and bare stents. AJR Am J Roentgenol 2006; 186:1138-43. [PMID: 16554593 DOI: 10.2214/ajr.04.1831] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
OBJECTIVE Our purpose was to evaluate the role of sonography in the early follow-up of patients with a covered transjugular intrahepatic portosystemic shunt (TIPS). CONCLUSION Routine baseline Doppler sonography should occur 7-14 days after shunt placement unless malfunction or procedural complications are suspected.
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Affiliation(s)
- Douglas Lake
- Division of Ultrasound, Medical University of South Carolina, 169 Ashley Ave., Charleston, SC 29425, USA
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Quateen A, Pech M, Berg T, Bergk A, Podrabsky P, Felix R, Ricke J. Percutaneous Transjugular Direct Porto-caval Shunt in Patients with Budd-Chiari Syndrome. Cardiovasc Intervent Radiol 2006; 29:565-70. [PMID: 16729230 DOI: 10.1007/s00270-005-0103-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The purpose of the study was to evaluate the feasibility and effectiveness of direct porto-caval shunts in patients with Budd-Chiari syndrome (BCS) in whom there is no access to the hepatic veins during transjugular intrahepatic portosystemic shunt (TIPSS). We included six consecutive patients with fulminant/acute Budd-Chiari syndrome (mean age: 35 years) in whom a conventional TIPSS was not possible due to inaccessible hepatic veins. We performed a direct porto-caval shunt via a transhepatic approach. Patients were followed up by means of clinical examination, laboratory investigations, and Doppler ultrasound. TIPSS implantation from the inferior vena cava (IVC) was successful in all six patients (100%). The median transhepatic shunt length was 9 cm (8-10 cm). No procedure-related complications were observed in our patients. Early shunt occlusion occurred in three out of six patients (50%). In all three of these patients, the stent used to stabilize the shunt ended 1-2 cm before reaching the IVC. All occlusions were successfully recanalized. One of these patients developed recurrent early shunt as well as mesenteric and splenic vein occlusions. She died 7 days after TIPSS placement due to an unmanageable coagulation disorder. The remaining five patients were followed up by planned clinical examination and laboratory investigations (mean follow-up time was 15 months; patient 1 was followed up for 13 months, patient 2 for 14 months, patient 3 for 15 months, and patients 4 and 5 for 16 months) and all displayed a complete and durable resolution of liver failure and ascites without reintervention. In patients with acute liver failure originating from BCS and inaccessible hepatic veins, a direct transhepatic porto-caval shunt can be performed safely and effectively under ultrasound guidance. Future studies in larger patient groups should investigate if the patency of transcaval TIPSS with long transhepatic shunt segments is similar compared to conventional TIPSS via the hepatic vein.
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Affiliation(s)
- A Quateen
- Department of Diagnostic and Interventional Radiology, Charité Campus Virchow Clinic, Universitätsmedizin Berlin, 13353 Berlin, Germany
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Gandini R, Konda D, Tisone G, Pipitone V, Anselmo A, Simonetti G. Bronchobiliary fistula treated by self-expanding ePTFE-covered nitinol stent-graft. Cardiovasc Intervent Radiol 2006; 28:828-31. [PMID: 16001141 DOI: 10.1007/s00270-004-0201-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A 71-year-old man, who had undergone right hepatectomy extended to the caudate lobe with terminolateral Roux-en-Y left hepatojejunostomy for a Klatskin tumor, developed bilioptysis 3 weeks postoperatively due to bronchobiliary fistula. Percutaneous transhepatic cholangiography revealed a non-dilated biliary system with contrast medium extravasation to the right subphrenic space through a resected anomalous right posterior segmental duct. After initial unsuccessful internal-external biliary drainage, the fistula was sealed with a VIATORR covered self-expanding nitinol stent-graft placed with its distal uncovered region in the hepatojejunal anastomosis and the proximal ePTFE-lined region in the left hepatic duct. A 10-month follow-up revealed no recurrence of bilioptysis and confirmed the complete exclusion of the bronchobiliary fistula.
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Affiliation(s)
- Roberto Gandini
- Department of Diagnostic Imaging and Interventional Radiology, University of Tor Vergata, Rome, Italy
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Echenagusia M, Rodriguez-Rosales G, Simo G, Camuñez F, Bañares R, Echenagusia A. Expanded PTFE-covered stent-grafts in the treatment of transjugular intrahepatic portosystemic shunt (TIPS) stenoses and occlusions. ACTA ACUST UNITED AC 2006; 30:750-4. [PMID: 16245017 DOI: 10.1007/s00261-005-0336-2] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
BACKGROUND We evaluated the efficacy of the VIATORR endoprosthesis for the management of transjugular intrahepatic portosystemic shunt (TIPS) dysfunction. METHODS Twelve consecutive patients (10 men and two women, mean age 52.7 years) with recurrent TIPS dysfunction underwent TIPS revision with use of the VIATORR endoprosthesis. Nine patients were asymptomatic and three patients had developed recurrent variceal bleeding. All patients had previous shunt revisions (mean 2.1 revisions per patient) with angioplasty or bare stents. Follow-up included clinical assessment, Doppler ultrasound, and portal venography. RESULTS TIPS revision was successful in all patients, without complications. The mean portosystemic pressure gradient decreased from 16.8 +/- 2.7 mmHg to 6.5 +/- 2.6 mmHg. Hemostasis was achieved in all three patients who had recurrent variceal bleeding at the time of the procedure. Mean follow-up was 21.9 +/- 10.7 months. In two patients TIPS dysfunction occurred at 14 and 30 months after stent-graft placement, respectively. The primary patency rates were 100% after 12 months and 88.8% after 24 months. Two patients (16.6%) developed encephalopathy after stent graft placement. CONCLUSION TIPS revision using the VIATORR endoprosthesis appears to be an effective and durable method to control shunt dysfunction.
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Affiliation(s)
- M Echenagusia
- Department of Radiology, Hospital General Universitario Gregorio Marañon, Madrid, Spain.
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Tripathi D, Ferguson J, Barkell H, Macbeth K, Ireland H, Redhead DN, Hayes PC. Improved clinical outcome with transjugular intrahepatic portosystemic stent-shunt utilizing polytetrafluoroethylene-covered stents. Eur J Gastroenterol Hepatol 2006; 18:225-32. [PMID: 16462534 DOI: 10.1097/00042737-200603000-00001] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
BACKGROUND AND AIMS Transjugular intrahepatic portosystemic stent-shunt (TIPSS) with standard uncovered stents has a 50% one-year primary patency rate, and is complicated by hepatic encephalopathy in 35% of patients. Newer covered stents appear to have improved patency. This large study aimed to assess the shunt function and clinical efficacy of polytetrafluoroethylene-covered stents in a single centre. METHODS A total of 316 patients with uncovered stents before the introduction of covered stents (group 1) and 157 patients with the Viatorr Gore polytetrafluoroethylene-covered stents at the time of TIPSS creation (group 2) were studied. RESULTS The mean follow-up was 22.8+/-25.4 and 13.1+/-12.5 months, respectively (P<0.01). Shunt insufficiency was greater in group 1 [54 versus 8% at 12 months; relative hazard (RH) 8.6; 95% confidence interval (CI) 4.8-15.5; P<0.001]. The incidence of variceal rebleeding was greater in group 1 (11 versus 6% at 12 months; RH 2.4; 95% CI 1.1-5.1; P<0.05). The incidence of hepatic encephalopathy was greater in group 1 (32 versus 22% at 12 months; RH 1.5; 95% CI 1.1-2.3; P<0.05). Mortality was similar in the two groups. CONCLUSION The Viatorr type of polytetrafluoroethylene-covered stent results in vastly improved patency compared with uncovered stents, with reduced rates of variceal rebleeding and hepatic encephalopathy. This type of covered stent has the potential for superior clinical efficacy compared with uncovered stents.
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Affiliation(s)
- Dhiraj Tripathi
- Department of Hepatology, Royal Infirmary of Edinburgh, Edinburgh, Scotland, UK.
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