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1.
J Intern Med ; 287(5): 558-568, 2020 05.
Artigo em Inglês | MEDLINE | ID: mdl-31960499

RESUMO

OBJECTIVE: To assess the association between specific heart diseases and suicide. DESIGN: Nationwide retrospective cohort study. PARTICIPANTS: A total of 7 298 002 individuals (3 640 632 males and 3 657 370 females) aged ≥15 years and living in Denmark during 1980-2016. MAIN OUTCOME MEASURES: Incidence rate ratios (IRR) with 95% confidence intervals. In multivariate analysis, we adjust for sex, period, age group, living status, income level, Charlson Comorbidity Index, psychiatric disorders prior to heart disease and self-harm prior to heart disease. RESULTS: Excess suicide rate ratios were found for following disorders: heart failure (IRR: 1.48; 95% CI: 1.38-1.58); cardiomyopathy (IRR: 1.41; 95% CI: 1.16-1.70); acute myocardial infarction (IRR: 1.28; 95% CI: 1.21-1.36); cardiac arrest with successful resuscitation (IRR: 4.75; 95% CI: 3.57-6.33); atrial fibrillation and flutter (IRR: 1.42; 95% CI: 1.32-1.52); angina pectoris (IRR: 1.19; 95% CI: 1.12-1.26); and ventricular tachycardia (IRR: 1.53; 95% CI: 1.20-1.94). A higher rate of suicide was noted during the first 6 months after the diagnosis of heart failure (IRR: 2.38; 95% CI: 2.04-2.79); acute myocardial infarction (IRR: 2.24; 95% CI: 1.89-2.66); atrial fibrillation and flutter (IRR: 2.70; 95% CI: 2.30-3.18); and angina pectoris (IRR: 1.83; 95% CI: 1.53-2.19) when compared to later. CONCLUSION: Several specific disorders were found to be associated with elevated rates of suicide. Additionally, we found temporal associations with higher suicide rates in the first time after diagnosis. Our results underscore the importance of being attentive towards psychological distress in individuals with heart disease.


Assuntos
Cardiopatias/psicologia , Suicídio Consumado/estatística & dados numéricos , Adolescente , Adulto , Fatores Etários , Idoso , Idoso de 80 Anos ou mais , Angina Pectoris/mortalidade , Angina Pectoris/psicologia , Fibrilação Atrial/mortalidade , Fibrilação Atrial/psicologia , Dinamarca/epidemiologia , Feminino , Cardiopatias/mortalidade , Insuficiência Cardíaca/mortalidade , Insuficiência Cardíaca/psicologia , Humanos , Incidência , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Infarto do Miocárdio/mortalidade , Infarto do Miocárdio/psicologia , Estudos Retrospectivos , Fatores de Risco , Fatores Sexuais , Adulto Jovem
2.
Obes Surg ; 34(8): 2999-3004, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-38839634

RESUMO

PURPOSE: The long-term need for biliary duct intervention following Roux-en-Y gastric bypass surgery (RYGB) is uncertain. We investigated the rate of laparoscopic assisted retrograde cholangiopancreatography (LAERCP) following RYGB. Also, the pre-LAERCP diagnostic workup together with the true rate of choledocholithiasis in patients with or without prior cholecystectomy was investigated. MATERIALS AND METHODS: Retrospective cohort study of RYGB and LAERCP performed at the Hospital South West Jutland, University Hospital of Southern Denmark, from 1 January 2013 to 31 May 2022. RESULTS: One percent of patients (n = 13) with a history of RYGB (n = 1363) underwent LAERCP at our facility during a median follow-up of 60.6 months. The stone extraction rate was 66.7% in patients with in situ gallbladder and 12.5% in patients with prior cholecystectomy. Cannulation of the common bile duct was achieved in 96.7% of cases. Postoperative complications were observed in 22.6% of the cases. CONCLUSION: Approximately 1% of RYGB patients needed LAERCP during a median follow-up of 5 years. In patients with a history of cholecystectomy, the LAERCP rate of stone extraction was very low (12.5%).


Assuntos
Colangiopancreatografia Retrógrada Endoscópica , Coledocolitíase , Derivação Gástrica , Laparoscopia , Obesidade Mórbida , Humanos , Derivação Gástrica/métodos , Derivação Gástrica/estatística & dados numéricos , Estudos Retrospectivos , Feminino , Masculino , Colangiopancreatografia Retrógrada Endoscópica/estatística & dados numéricos , Adulto , Pessoa de Meia-Idade , Laparoscopia/métodos , Obesidade Mórbida/cirurgia , Coledocolitíase/cirurgia , Dinamarca/epidemiologia , Complicações Pós-Operatórias/epidemiologia , Resultado do Tratamento , Seguimentos
3.
Plant Dis ; 89(4): 432, 2005 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-30795468

RESUMO

Strawberry (Fragaria × ananassa) is the most important small fruit crop in Denmark. The quarantine pathogen Colletotrichum acutatum was detected for the first time in June 2000 in Denmark in a production field on the island of Falster. Strawberry plants of cv. Kimberly showed typical symptoms of anthracnose fruit rot. On mature fruits, brown-to-black lesions with spore masses that were orange to salmon in color were observed. Mummified berries were also observed. The fungus was isolated and identified on the basis of morphological characteristics, and identification was confirmed using enzyme-linked immunosorbent assay at the Central Science Laboratory, York, U.K. Species-specific polymerase chain reaction with the C. acutatum-specific primer pairs acut1/col2 (1) and CaInt2/ITS4 (3) also supported the identification. Additionally, the internal transcribed spacer regions, ITS1 and ITS2, of the ribosomal DNA were sequenced in both directions (GenBank Accession No. AY818361). Homology searches with this sequence using BLAST also confirmed the identity. Colonies grown on potato dextrose agar developed white-to-grey aerial mycelium with salmon-colored spore masses, and were beige to black on the reverse side. Conidia were 11.3 (7.3 to 16.6) µm × 3.9 (2.5 to 5.2) µm, hyaline, cylindrical with at least one pointed end, and aseptate. Mycelial growth rate was 8.4 mm per day at 25°C which is similar to earlier reports (2). Spray-inoculated (106 conidia per ml) strawberry fruits cv. Elsanta developed brown, sunken, irregular lesions with salmon-colored acervuli after 2 to 5 days at 25°C. Koch's postulates were fulfilled since the reisolated fungus from these lesions developed the same morphological characteristics as described above. To our knowledge, this is the first report of C. acutatum in Denmark. References: (1) P. V. Martinez-Culebras et al. J. Phytopathol. 151:135, 2003. (2) B. J. Smith et al. Plant Dis. 74:69, 1990. (3) S. Sreenivasaprasad et al. Plant Pathol. 45:650, 1996.

4.
Am J Surg ; 175(5): 354-9, 1998 May.
Artigo em Inglês | MEDLINE | ID: mdl-9600276

RESUMO

BACKGROUND: Intrahepatic abscess (IA) is an uncommon complication after liver transplantation (OLTx) usually found in the setting of hepatic arterial thrombosis (HAT) often with associated biliary tree necrosis and/or stricture. Conventional treatment of IA in this setting has required retransplantation. METHODS: A retrospective review of 274 patients (287 OLTx) from September 1991 through September 1996 was performed. Median follow-up was 3.6 years. Diagnosis of HAT was confirmed by arteriography and IA was documented by computerized tomography. Percutaneous drainage of the abscess and stenting of biliary strictures, if present, was achieved using conventional interventional radiology techniques. RESULTS: The diagnosis of hepatic artery complication was made in 14 patients (5.1%), 2 of whom required retransplantation. Hepatic artery thrombosis associated with solitary IA was found in 3 patients (1%) who were transplanted in our center and in 1 additional patient followed up at our center but transplanted elsewhere. All 4 patients had complete resolution of IA using this approach. Three of the 4 patients are alive and well, with the fourth patient succumbing to recurrent hepatitis B infection resulting in allograft failure. CONCLUSIONS: Solitary hepatic allograft abscesses associated with HAT respond to percutaneous drainage and antibiotics, obviating the need for retransplantation in this setting.


Assuntos
Artéria Hepática , Abscesso Hepático/etiologia , Transplante de Fígado/efeitos adversos , Complicações Pós-Operatórias/etiologia , Trombose/etiologia , Feminino , Artéria Hepática/cirurgia , Humanos , Incidência , Abscesso Hepático/epidemiologia , Abscesso Hepático/cirurgia , Transplante de Fígado/estatística & dados numéricos , Masculino , Pessoa de Meia-Idade , Oregon/epidemiologia , Complicações Pós-Operatórias/epidemiologia , Complicações Pós-Operatórias/cirurgia , Reoperação/estatística & dados numéricos , Estudos Retrospectivos , Trombose/epidemiologia , Trombose/cirurgia , Transplante Homólogo
5.
Interv Neuroradiol ; 17(2): 241-7, 2011 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-21696666

RESUMO

The use of bare metal stents (BMS) to prevent recurrent stroke due to stenosis of the cerebral vasculature is associated with high rates of restenosis. Drug-eluting stents (DES) may decrease this risk. We evaluated the performance of DES in a cohort of patients treated at our institution.Consecutive patients treated with DES were identified by a case log and billing records; data regarding procedural details, clinical outcome and angiographic follow-up was obtained by retrospective chart review.Twenty-six patients (27 vessels; 14 vertebral origin (VO); 13 intracranial) were treated. Stenosis was reduced from mean 81% to 8% at the VO and 80% to 2% intracranially. No strokes occurred in the first 24 hours after stenting or at any time point in the VO group during a mean follow-up period of nine months. Among patients with intracranial stents, stroke with permanent disability occurred within 30 days in 1/12 (8%) and after 30 days in 1/11 (9%) with clinical follow-up (mean follow-up, 14 months). Follow-up catheter angiography was obtained in 14/14 (100%) in the VO group at mean eight months and in 8/11 surviving patients (73%) at a mean of ten months after stenting in the intracranial group. The restenosis rate was 21% at the VO (3/14) and 38% (3/8) for intracranial stents. Restenosis at the VO was less frequent than might have been expected from reports utilizing BMS, however, overall restenosis rates appeared higher than previously reported for patients with intracranial DES and comparable with restenosis rates for intracranial BMS.


Assuntos
Angioplastia/métodos , Stents Farmacológicos , Acidente Vascular Cerebral/prevenção & controle , Insuficiência Vertebrobasilar/terapia , Idoso , Angioplastia/estatística & dados numéricos , Revascularização Cerebral/métodos , Revascularização Cerebral/estatística & dados numéricos , Stents Farmacológicos/estatística & dados numéricos , Feminino , Seguimentos , Humanos , Masculino , Prontuários Médicos/estatística & dados numéricos , Fatores de Risco , Prevenção Secundária , Acidente Vascular Cerebral/epidemiologia , Resultado do Tratamento , Insuficiência Vertebrobasilar/epidemiologia
6.
AJNR Am J Neuroradiol ; 31(9): 1737-40, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20538826

RESUMO

BACKGROUND AND PURPOSE: Devices to close a femoral arteriotomy are frequently used after catheterization for interventional radiology and cardiac procedures to decrease the time to hemostasis and ambulation and, potentially, to decrease local complications. The Mynx vascular closure device uses a sealant designed to occlude the access tract, resulting in hemostasis. MATERIALS AND METHODS: We retrospectively reviewed all cases in which the Mynx device was used and for which follow-up angiography was available. A total of 146 devices were deployed in 135 patients. A follow-up vascular study visualizing the femoral artery was performed in 26 patients (27 studies). RESULTS: There were 5 (5/27, 18%) cases of intravascular Mynx sealant on follow-up vascular imaging. Three pseudoaneurysms (3/27, 11%) were identified. CONCLUSIONS: In this small study, intravascular sealant and pseudoaneurysms were found frequently after femoral arterial closure with the Mynx vascular closure device.


Assuntos
Embolização Terapêutica/instrumentação , Embolização Terapêutica/estatística & dados numéricos , Artéria Femoral/cirurgia , Hemostáticos/administração & dosagem , Complicações Pós-Operatórias/epidemiologia , Técnicas de Fechamento de Ferimentos/instrumentação , Técnicas de Fechamento de Ferimentos/estatística & dados numéricos , Análise de Falha de Equipamento , Humanos , Incidência , Oregon/epidemiologia , Resultado do Tratamento
7.
J Vasc Interv Radiol ; 10(6): 757-66, 1999 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-10392944

RESUMO

PURPOSE: To evaluate long-term patency of self-expanding Z stents for treatment of benign central venous obstructions unrelated to dialysis. MATERIALS AND METHODS: Z stents were placed in 19 patients, (ages 26-72 years) with severe symptomatic obstructions of the superior or inferior venae cavae and their large branches and portal vein caused by surgical or catheter injury (n = 8), fibrosis (n = 5), cirrhosis (n = 3), Budd-Chiari syndrome (n = 2), and extrinsic compression (n = 1). Fourteen patients underwent stent placement primarily, five after local urokinase infusion for superimposed thrombosis. Follow-up was performed with ultrasound and venography. RESULTS: Venous congestive symptoms quickly resolved in all patients after stent placement. The follow-up period was from 1 to 94 months. Twelve patients have died during follow-up from 1 to 37 months although all remained asymptomatic until death. Six patients remain alive, asymptomatic, with patent stents, and with follow-up from 24 to 94 months. Primary patency was 83%, and secondary patency was 100%. One patient with a patent stent at 12 months was lost to follow-up. No stent migrations, perforations, infections, or significant complications occurred. CONCLUSION: Benign central venous obstructions are effectively treated by the placement of self-expandable Z stents. Placed percutaneously into obstructive lesions with a minimum risk, these stents offer long-term durability and patency.


Assuntos
Veia Porta/patologia , Stents , Doenças Vasculares/terapia , Veia Cava Inferior/patologia , Veia Cava Superior/patologia , Adulto , Idoso , Síndrome de Budd-Chiari/complicações , Cateterismo Venoso Central/efeitos adversos , Constrição Patológica/terapia , Feminino , Seguimentos , Humanos , Cirrose Hepática/complicações , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Ativadores de Plasminogênio/uso terapêutico , Veia Porta/lesões , Veia Porta/cirurgia , Lesões por Radiação/complicações , Diálise Renal , Taxa de Sobrevida , Trombose/complicações , Trombose/tratamento farmacológico , Ativador de Plasminogênio Tipo Uroquinase/uso terapêutico , Doenças Vasculares/etiologia , Grau de Desobstrução Vascular , Veia Cava Inferior/lesões , Veia Cava Inferior/cirurgia , Veia Cava Superior/lesões , Veia Cava Superior/cirurgia
8.
J Vasc Interv Radiol ; 6(6): 925-31, 1995.
Artigo em Inglês | MEDLINE | ID: mdl-8850671

RESUMO

PURPOSE: To evaluate expandable metallic Gianturco-Rösch Z (GRZ) stents for treatment of benign and malignant tracheobronchial stenoses. PATIENTS AND METHODS: Six patients, ages 45-73 years, were treated for severe dyspnea with placement of GRZ stents. Three patients had benign tracheal lesions (one tracheomalacia, two postoperative) and received uncovered GRZ stents. Three patients had malignant stenoses at the level of the carina; one received an uncovered stent and the other two received silicone-covered GRZ stents. RESULTS: Two patients with benign lesions responded well to stent placement. One was asymptomatic for a year and then was lost to follow-up; the other improved substantially but died of end-stage lung disease 5 months after stent placement. A third patient with a benign high tracheal lesion did poorly; symptoms recurred secondary to inferior migration of a stent, which was removed surgically at 4 months. All patients with malignant lesions improved symptomatically after stent placement and remained without significant dyspnea until death (from 1 to 6 months). CONCLUSION: Expandable GRZ stents are promising devices for treatment of benign lesions and offer effective palliation of malignant tracheobronchial stenoses.


Assuntos
Broncopatias/terapia , Stents , Estenose Traqueal/terapia , Idoso , Broncopatias/etiologia , Neoplasias Brônquicas/complicações , Constrição Patológica/etiologia , Constrição Patológica/terapia , Dispneia/etiologia , Dispneia/terapia , Desenho de Equipamento , Feminino , Seguimentos , Migração de Corpo Estranho/etiologia , Humanos , Masculino , Pessoa de Meia-Idade , Cuidados Paliativos , Recidiva , Silicones , Stents/efeitos adversos , Propriedades de Superfície , Taxa de Sobrevida , Neoplasias da Traqueia/complicações , Estenose Traqueal/etiologia , Traqueostomia/efeitos adversos
9.
Cardiovasc Intervent Radiol ; 19(4): 302-4, 1996.
Artigo em Inglês | MEDLINE | ID: mdl-8755091

RESUMO

We report the use of a Dacron-covered Gianturco-Rösch Z (GRZ)-stent to treat malignant obstruction of the superior vena cava (SVC). Initial treatment with an uncovered GRZ-stent was suboptimal due to protrusion of tumor-thrombus through the stent struts into the SVC lumen. Placement of a coaxial Dacron-covered stent graft relieved the residual obstruction due to tumor within the SVC.


Assuntos
Stents , Síndrome da Veia Cava Superior/terapia , Idoso , Desenho de Equipamento , Humanos , Masculino , Neoplasias Primárias Desconhecidas/complicações , Polietilenotereftalatos , Radiografia , Síndrome da Veia Cava Superior/diagnóstico por imagem , Síndrome da Veia Cava Superior/etiologia
10.
Cardiovasc Intervent Radiol ; 13(3): 183-8, 1990.
Artigo em Inglês | MEDLINE | ID: mdl-2121346

RESUMO

Hepatic aneurysms, pseudoaneurysms and fistulas (arterial biliary and arterial portal) causing bleeding or portal hypertension, and arteriovenous malformations causing high output cardiac failure in adults can be successfully managed by embolization techniques. Results of embolization in infantile hemangioendotheliomas are less uniform and tumors with massive arteriovenous shunting are difficult to manage. Transjugular intrahepatic portal systemic shunts using expendable stents have been successfully created in patients and have effectively controlled portal hypertension and variceal bleeding.


Assuntos
Embolização Terapêutica , Artéria Hepática , Veias Hepáticas , Stents , Aneurisma/terapia , Fístula Arteriovenosa/terapia , Hemangioendotelioma/terapia , Hemobilia/terapia , Humanos , Hipertensão Portal/terapia , Neoplasias Hepáticas/congênito , Neoplasias Hepáticas/terapia , Derivação Portossistêmica Cirúrgica
11.
J Vasc Interv Radiol ; 7(2): 221-8, 1996.
Artigo em Inglês | MEDLINE | ID: mdl-9007801

RESUMO

PURPOSE: To determine the long-term results of Gianturco-Rösch Z (GRZ) stent placement for the treatment of recurrent, benign biliary strictures in liver transplant recipients. MATERIALS AND METHODS: During a 5-year period, eight orthotopic liver transplant recipients underwent transhepatic placement of GRZ stents to treat 12 recurrent biliary strictures (six anastomotic, six intrahepatic). Prior treatment of 11 strictures with balloon dilation therapy had failed. Patients were followed up for 1-65 months. RESULTS: Stent placement was successful in all patients. Stent position remained stable in all but one patient. Three patients died (1, 25, and 28 months after stent placement), all with patent stents. Four patients required no further biliary intervention. Two of the other four patients needed intermittent biliary balloon dilation with removal of bile duct debris. The third patient had a stable, nonobstructing stenosis in the stent. The fourth passed his stents and needed no further intervention. CONCLUSION: GRZ stents are useful in patients who are refractory to repetitive balloon dilation of biliary strictures or who are poor surgical candidates.


Assuntos
Colestase Intra-Hepática/terapia , Transplante de Fígado , Complicações Pós-Operatórias/terapia , Stents , Anastomose Cirúrgica , Cateterismo , Pré-Escolar , Colestase Intra-Hepática/diagnóstico por imagem , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias/diagnóstico por imagem , Radiografia , Recidiva , Fatores de Tempo
12.
J Vasc Interv Radiol ; 11(7): 919-29, 2000.
Artigo em Inglês | MEDLINE | ID: mdl-10928533

RESUMO

PURPOSE: To evaluate patency of refractory benign biliary strictures in liver transplant patients treated with retrievable stent-grafts. MATERIALS AND METHODS: Eight male liver transplant patients who ranged in age from 42 to 52 years developed nine symptomatic biliary strictures (intrahepatic left duct, 1; hilar, 2; anastomotic, 6). These strictures had recurred despite multiple previous attempts of treatment (n = 33), including angioplasty (n = 27), surgery (n = 1), atherectomy (n = 1), metallic stent (n = 1), and prolonged catheter drainage (n = 3). As an alternative method of treatment for these refractory biliary strictures, transhepatic placement of expanded polytetrafluoroethylene stent-grafts across the strictures was performed through 10-F sheaths. In total, 14 stent-grafts were placed to treat the nine lesions, and nine of these stent-grafts were subsequently retrieved through 12-16-F sheaths. RESULTS: Stent-grafts were deployed successfully. Delayed migrations in two patients required additional stent-graft placement. One patient died of pneumonia 1 month after stent-graft placement; the remaining seven patients had stent-grafts successfully removed at 3-10 months (mean, 5.6 months). Nine intended stent-graft retrievals were performed successfully, with two requiring use of elongated forceps. Immediately after treatment, all strictures were widely patent. Five to 6 months after stent-graft removal in these seven patients, significant strictures recurred in four of eight lesions (50%). One patient underwent surgical revision. At 6-29 months (mean, 12 months) after stent-graft removal, the remaining six patients were without clinical or laboratory evidence of biliary obstruction, despite three patients with significant recurrent strictures. CONCLUSION: Temporary stent-graft placement for treatment of benign biliary strictures in liver transplant patients is technically feasible. Longer follow-up with larger patient series is necessary to assess effectiveness and possible broader applications.


Assuntos
Doenças dos Ductos Biliares/terapia , Colestase/terapia , Transplante de Fígado , Stents , Adulto , Anastomose Cirúrgica/efeitos adversos , Cateterismo/instrumentação , Constrição Patológica/terapia , Remoção de Dispositivo , Drenagem/instrumentação , Estudos de Viabilidade , Seguimentos , Migração de Corpo Estranho/etiologia , Humanos , Masculino , Pessoa de Meia-Idade , Politetrafluoretileno , Complicações Pós-Operatórias , Recidiva
13.
J Vasc Interv Radiol ; 6(5): 747-54, 1995.
Artigo em Inglês | MEDLINE | ID: mdl-8541679

RESUMO

PURPOSE: To prospectively evaluate the clinical efficacy of silicone-covered Gianturco-Rösch self-expandable Z (GRZ) stents in the treatment of malignant esophageal obstruction. PATIENTS AND METHODS: GRZ stents were placed in 52 patients (39 men, 13 women) with severe dysphagia due to high-grade malignant esophageal obstruction. RESULTS: Stent placement was technically successful, and immediate relief of dysphagia was achieved in 50 of 52 patients (96%), with long-term relief in 47 patients (90%). Fifty-one patients (98%) died during follow-up (range, 1 week to 33 months; mean, 4.3 months). Late complications were most prevalent and included stent migration (n = 5), food impaction (n = 2), chest pain (n = 2), membrane disruption with tumor ingrowth (n = 1), granulomatous reaction above the stent (n = 1), esophageal perforation with mediastinitis (n = 1), and upper gastrointestinal hemorrhage (n = 4). Twelve complications were easily managed with medical, endoscopic, or radiologic intervention. Four deaths may have been related to stent placement (early mortality rate, 7.7%). CONCLUSION: GRZ stents provide relatively safe and effective long-term palliation in patients with severe, malignant esophageal obstruction.


Assuntos
Neoplasias Esofágicas/complicações , Estenose Esofágica/cirurgia , Stents , Idoso , Idoso de 80 Anos ou mais , Neoplasias Esofágicas/mortalidade , Estenose Esofágica/etiologia , Estenose Esofágica/mortalidade , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Cuidados Paliativos , Próteses e Implantes , Radiografia Intervencionista/métodos
14.
J Vasc Interv Radiol ; 8(4): 539-48, 1997.
Artigo em Inglês | MEDLINE | ID: mdl-9232568

RESUMO

PURPOSE: To assess the clinical and technical results of stent-graft placement for revision of transjugular intrahepatic portosystemic shunt (TIPS) stenoses and occlusions. MATERIALS AND METHODS: Six patients who developed recurrent TIPS stenosis or occlusion of the parenchymal tract underwent shunt revision with use of polytetrafluoroethylene (PTFE) stent-grafts anchored at both ends by Z stents and centrally supported by Wallstents. RESULTS: Before graft placement, mean primary patency was 50 days (range, 9-100 days). Patients underwent one to eight revisions with angioplasty or stent placement (mean, 3.2). Three patients had biliary-TIPS fistulas documented with use of a prototype double occlusion balloon catheter. Stent-grafts were successfully placed within the obstructed shunt, creating an excellent lumen in all cases. The portosystemic gradient was decreased from a mean of 24.3 mm Hg (range, 12-35 mm Hg) to a mean of 10.3 mm Hg (range, 7-16 mm Hg). Five of six patients were asymptomatic and no complications occurred (median clinical follow-up, 331 days). One patient died of pre-existing multi-organ system failure. The duration of primary patency after stent-grafting was improved (mean, 229 days; range, 27-324 days) and the difference approached statistical significance despite the small sample size (P = .056, paired t test). Three patients remained primarily patent at a mean venographic follow-up of 315 days. One shunt occluded at 1 month from residual thrombus in the portal vein, and one stenosis occurred that was secondary to misplacement of the original stent-graft. Patency was re-established in each of these patients. CONCLUSION: PTFE covered stent-grafts are effective for shunt revision in patients with tract stenosis or occlusion and appear to improve TIPS patency.


Assuntos
Angioplastia com Balão/instrumentação , Oclusão de Enxerto Vascular/terapia , Derivação Portossistêmica Transjugular Intra-Hepática/efeitos adversos , Stents , Adulto , Angioplastia com Balão/métodos , Feminino , Seguimentos , Oclusão de Enxerto Vascular/diagnóstico por imagem , Oclusão de Enxerto Vascular/etiologia , Humanos , Hipertensão Portal/cirurgia , Masculino , Pessoa de Meia-Idade , Flebografia , Projetos Piloto , Politetrafluoretileno , Reoperação , Resultado do Tratamento
15.
Cardiovasc Intervent Radiol ; 15(5): 319-27, 1992.
Artigo em Inglês | MEDLINE | ID: mdl-1423393

RESUMO

Gianturco-Rösch expandable Z-stents were used in 22 patients with superior vena cava syndrome (SVCS). Stents were placed in all patients in the SVC and in 17 patients, also into the innominate veins. Stent placement resulted in complete relief of symptoms in all patients. Twenty-one patients had no SVCS recurrence from 1 to 16 months, to their death, or to the present time. SVCS recurred only in 1 patient 9 months after stent placement due to tumor ingrowth and secondary thrombosis. Based on ours and on other reported experiences, expandable metallic stents are effective devices for treatment of the SVCS which is difficult to manage by other means.


Assuntos
Stents , Síndrome da Veia Cava Superior/terapia , Veias Braquiocefálicas , Desenho de Equipamento , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Radiografia , Recidiva , Síndrome da Veia Cava Superior/diagnóstico por imagem , Síndrome da Veia Cava Superior/epidemiologia , Fatores de Tempo , Grau de Desobstrução Vascular/fisiologia , Veia Cava Superior
16.
Radiology ; 207(3): 683-93, 1998 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-9609891

RESUMO

PURPOSE: To analyze in detail the location and types of stenosis and occlusion that occur after transjugular intrahepatic portosystemic shunt (TIPS) creation and to determine the relative contribution of these various types of TIPS malfunction to recurrent symptoms of variceal bleeding or ascites. MATERIALS AND METHODS: In 116 of 217 patients who underwent TIPS creation between June 1990 and July 1995, follow-up portal venography was performed at 6-month intervals and for symptoms of recurrent variceal bleeding or ascites. RESULTS: Cumulative primary venographic patency by means of Kaplan-Meier survival analysis was 55% at 6 months and 5% at 2 years. Secondary patency was 92% at 2 years. Stenosis or occlusion occurred in 63 of 116 patients (54%). In 20 patients (17%), acute shunt occlusions developed less than 30 days after TIPS creation; in 24 patients (21%), tract abnormalities were detected after 30 days; and in 19 patients (16%), hepatic vein stenoses were detected after 30 days. Abnormalities of the parenchymal tract were more often correlated with recurrent variceal bleeding or ascites than were hepatic vein stenoses (odds ratio, 3.6; P = .02). Ten of 14 patients (71%) with detected biliary fistulas to their TIPS had symptoms, and all patients with biliary fistulas had tract abnormalities. CONCLUSION: Tract stenoses and occlusions were the major cause of symptomatic shunt failure after TIPS creation. Substantial bile duct transections are often associated with tract abnormalities and recurrent symptoms. Although common, hepatic vein stenoses were rarely associated with recurrent symptoms in our patient population.


Assuntos
Oclusão de Enxerto Vascular/diagnóstico por imagem , Derivação Portossistêmica Transjugular Intra-Hepática , Grau de Desobstrução Vascular , Adulto , Idoso , Varizes Esofágicas e Gástricas/diagnóstico por imagem , Varizes Esofágicas e Gástricas/cirurgia , Feminino , Seguimentos , Oclusão de Enxerto Vascular/cirurgia , Humanos , Masculino , Pessoa de Meia-Idade , Derivação Portossistêmica Transjugular Intra-Hepática/métodos , Derivação Portossistêmica Transjugular Intra-Hepática/estatística & dados numéricos , Portografia , Recidiva , Reoperação , Estudos Retrospectivos , Fatores de Tempo
17.
Radiology ; 202(2): 349-54, 1997 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-9015055

RESUMO

PURPOSE: To prospectively evaluate the clinical efficacy of polyethylene-covered metallic Z-stents in treatment of dysphagia secondary to malignant esophageal obstruction and esophagorespiratory fistula. MATERIALS AND METHODS: Thirty-five patients with dysphagia due to malignant esophageal obstruction (n = 32) and esophagorespiratory fistula (n = 3) were treated with polyethylene-covered Gianturco-Rösch Z-stents. RESULTS: Thirty-nine stents were placed in 35 patients. Stent placement was technically successful in all patients. Improvement in dysphagia was achieved in 34 of 35 patients. The average dysphagia score decreased from 3.1 (dysphagia to liquids) to 0.6 (essentially normal diet). An esophagorespiratory fistula was completely sealed in two of three patients. All 35 patients were followed up clinically at 1 day and 1 week and at 3-month intervals (range, 1 week to 18 1/2 months; mean, 4.8 months). Recurrent dysphagia or aspiration occurred in only three of 34 (9%) patients whose disease was initially palliated and was easily treated in all cases. Nine complications occurred in eight patients (23%) and included chest pain that required analgesia (n = 3), food impaction (n = 1), stent migration (n = 2), and upper gastrointestinal tract hemorrhage (n = 3). CONCLUSION: Polyethylene-covered stents are a relatively safe and effective means of long-term palliation in patients with severe malignant esophageal obstruction and esophagorespiratory fistula. These stents are easily deployed, and the rate of stent migration is relatively low.


Assuntos
Fístula Esofágica/terapia , Neoplasias Esofágicas/terapia , Estenose Esofágica/terapia , Esôfago , Fístula/terapia , Cuidados Paliativos , Neoplasias do Sistema Respiratório/terapia , Stents , Idoso , Idoso de 80 Anos ou mais , Transtornos de Deglutição/etiologia , Transtornos de Deglutição/terapia , Fístula Esofágica/diagnóstico por imagem , Fístula Esofágica/etiologia , Neoplasias Esofágicas/complicações , Estenose Esofágica/diagnóstico por imagem , Estenose Esofágica/etiologia , Feminino , Fístula/diagnóstico por imagem , Fístula/etiologia , Humanos , Masculino , Pessoa de Meia-Idade , Polietilenos , Estudos Prospectivos , Radiografia Intervencionista , Neoplasias do Sistema Respiratório/diagnóstico por imagem , Neoplasias do Sistema Respiratório/etiologia , Stents/efeitos adversos
18.
J Vasc Interv Radiol ; 10(10): 1371-8, 1999.
Artigo em Inglês | MEDLINE | ID: mdl-10584654

RESUMO

PURPOSE: To evaluate the potential benefits of placing a polytetrafluoroethylene (PTFE)-covered stent-graft during initial creation of a transjugular intrahepatic portosystemic shunt (TIPS) in clinical practice. MATERIALS AND METHODS: De novo TIPS were created with a PTFE stent-graft in four male and four female patients with symptomatic portal hypertension awaiting liver transplant. Their ages ranged from 35 to 62 (mean, 47) years. Patients were followed with TIPS ultrasound (US) and/or venography until liver transplantation or death; one remains under active study. Six recovered specimens underwent gross and microscopic evaluation. RESULTS: All TIPS placements were successful. Six shunts were primarily patent, with a mean patency of 289 days, through completion of the study. Five were found to be patent at transplant and one was found to be patent at autopsy. Explant evaluation revealed a smooth, thin layer of neointima and exclusion of biliary secretions. Three patients developed a total of four stenoses (one tandem lesion) during follow-up, leading to revision in two patients. Mean primary and total patency in these patients was achieved after 279 and 463 days, respectively. A previously occult moderate stenosis was detected after explant in another patient. Only one (nonsignificant) stenosis clearly developed in an area covered by PTFE. CONCLUSION: Placement of a de novo PTFE stent-graft during TIPS creation is feasible and may extend primary shunt patency. Appropriate positioning of the stent-graft is critical.


Assuntos
Hipertensão Portal/cirurgia , Derivação Portossistêmica Transjugular Intra-Hepática/métodos , Stents , Adulto , Materiais Revestidos Biocompatíveis , Feminino , Humanos , Hipertensão Portal/diagnóstico por imagem , Hipertensão Portal/patologia , Transplante de Fígado , Masculino , Metais , Pessoa de Meia-Idade , Politetrafluoretileno , Portografia , Desenho de Prótese , Resultado do Tratamento
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