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1.
Article in English | MEDLINE | ID: mdl-38596612

ABSTRACT

Objectives: Almost half of endovascular aortic aneurysm repair (EVAR) procedures are performed in hostile anatomy, increasing the risk of procedure related complications such as type IA endoleaks, which may be prevented with the chimney technique in EVAR (ChEVAR). Our aim is to describe the differential characteristics between EVAR in favorable anatomy and ChEVAR in hostile necks. Materials and methods: A cohort of patients with infrarenal abdominal aortic aneurysms (AAA) that were treated with EVAR or ChEVAR were included. The primary outcome was the incidence of type IA endoleak. Secondary outcomes were the rate of chimney occlusion, reintervention, migration, rupture, acute limb ischemia, sac growth, and aneurysm-related mortality during the follow-up period. Results: . With a median follow-up of 11.5 months, 79 patients were treated with EVAR and 21 with ChEVAR. The overall age was 76.49 ± 7.32 years old, and 82% were male. The ChEVAR cohort had a higher prevalence of tobacco use than the EVAR cohort (38.1% vs. 17.7%, p = 0.041), and a shorter neck (7.88 mm ± 5.73 vs 36.28 mm ± 13.73, p<0.001). There were no differences in type IA endoleak incidence between the groups (a single endoleak type IA in the EVAR group, p = 0.309). One patient experienced an asymptomatic chimney occlusion in the ChEVAR group, and another patient required a reintervention due to chimney occlusion. Sac regression and reinterventions were not different between groups. There were no migration, rupture, acute limb ischemia, or aneurysm-related mortality events. Conclusions: . In patients with abdominal aortic aneurysms, ChEVAR in hostile necks had similar event rates to EVAR in favorable necks.


Objetivos: Aproximadamente la mitad de las reparaciones endovasculares de aneurisma de aorta abdominal (AAA) son realizadas en anatomías hostiles, incrementando el riesgo de complicaciones como endoleaks tipo IA. La técnica con chimeneas (ChEVAR) es una alternativa para disminuir el riesgo de complicaciones en cuellos hostiles. Nuestro objetivo es comparar ambas técnicas (ChEVAR y reparación endovascular convencional [EVAR]) en nuestra medio. Materiales y métodos: Se realizó un trabajo de cohorte retrospectivo en pacientes con AAA tratados con EVAR o ChEVAR. El punto final primario fue la incidencia de endoleak tipo IA. Los puntos finales secundarios fueron la incidencia de oclusión de chimeneas, reintervención, migración, ruptura del saco, isquemia aguda de miembros, crecimiento del saco o mortalidad asociada al aneurisma durante el seguimiento. Resultados: Tras una mediana de seguimiento de 11,5 meses, 79 pacientes fueron tratados con EVAR y 21 con chEVAR. La edad promedio fue de 76,49 ± 7,32 años y 82% fueron de sexo masculino. Los pacientes con chEVAR tuvieron mayor prevalencia de consumo tabáquico que los pacientes con EVAR (38,1% vs. 17,7%, p=0,041) y un cuello más corto (7,88 mm ± 5,73 vs. 36,28 mm ± 13,73, p<0,001). No hubo diferencia de endoleak tipo IA entre los grupos. Dos pacientes presentaron la oclusión total de la chimenea, uno de los cuales requirió reintervención. No hubo diferencias en la regresión del tamaño del saco, así como tampoco hubo eventos de migración, ruptura, isquemia del miembro o mortalidad asociada al aneurisma. Conclusiones: En pacientes con AAA, la técnica ChEVAR en cuellos hostiles tuvo eventos similares que EVAR en cuellos favorables.

2.
Arch. cardiol. Méx ; 93(4): 422-428, Oct.-Dec. 2023. tab, graf
Article in English | LILACS-Express | LILACS | ID: biblio-1527719

ABSTRACT

Abstract Objective: The aim of the study was to compare the immediate and long-term outcomes of endovascular aneurysm repair (EVAR) between patients under and over the age of 80 with abdominal aortic aneurysm (AAA). Methods: From 2011 to 2017, we conducted a retrospective cohort study with AAA patients who received elective EVAR. Primary outcomes included hospital mortality, length of stay, acute kidney injury, and the need for re-interventions. Secondary outcomes included aneurysm-related mortality, acute myocardial infarction, stroke, acute limb ischemia, and prolonged mechanical ventilation. Results: A total of 77 (62.6%) patients under the age of 80 years old and 46 (37.4%) octogenarians were included in the study. The male gender and AAA diameter did not differ among groups (92.2% vs. 82.6%, p = 0.11 and 5.4 cm [4.9-6.2 cm] vs. 5.4 cm [5-6 cm], p = 0.53, respectively). The younger patients had a higher prevalence of tobacco use (72.7% vs. 41.7%, p = 0.01). There were no deaths during the index hospitalization. The incidence of reinterventions (5.3% vs. 15.2%, p = 0.11) and acute kidney injury (14.3% vs. 23.9%, p = 0.18) did not differ between groups, but the length of stay was longer for octogenarian patients (3 days [2-4] vs. 2 days [2-3, p = 0.04]). Endoleaks were the most common cause for re-interventions (81.8%), with a prevalence of 34% across the entire cohort. There were no differences in any of the secondary outcomes between groups. Conclusion: In octogenarian patients with AAA, EVAR represents a safe procedure both during the index hospitalization and during long-term follow-up.


Resumen Objetivo: Comparar los resultados inmediatos y a largo plazo de la reparación endovascular del aneurisma de aorta abdominal (REVA) entre pacientes menores de 80 años y octogenarios. Método: Cohorte retrospectiva que incluyó pacientes con aneurisma de aorta abdominal (AAA) sometidos a REVA electiva desde 2011 hasta 2017. Se evaluaron como punto finales primarios la mortalidad hospitalaria, la duración de la estadía hospitalaria, la incidencia de insuficiencia renal aguda y el requerimiento de reintervenciones. Los puntos finales secundarios incluyeron la mortalidad asociada al aneurisma, infarto agudo de miocardio, accidente cerebrovascular, isquemia arterial aguda de las extremidades y ventilación mecánica prolongada. Resultados: Se incluyeron 77 (62.6%) pacientes menores de 80 años y 46 (37.4%) octogenarios. La prevalencia de sexo masculino y el diámetro del AAA no difirieron entre ambos grupos (92.2% vs. 82.6%, p = 0.11 y 5.4 cm [4.9-6.2 cm] vs. 5.4 cm [5-6 cm], p = 0.53, respectivamente). Los pacientes más jóvenes presentaron una mayor prevalencia de tabaquismo (72.7% vs. 41.7%, p = 0.01). No se registraron muertes durante la hospitalización índice. La incidencia de reintervenciones (5.3% vs. 15.2%, p = 0.11) e insuficiencia renal aguda (14.3% vs. 23.9%, p = 0.18) no difirieron entre ambos grupos, pero la estadía hospitalaria fue más prolongada en pacientes octogenarios (3 días [2-4 días] vs. 2 días [2-3 días], p = 0.04). La causa más frecuente de reintervenciones fue la presencia de endofugas (81.8%), con una prevalencia del 34% en toda la cohorte. No se observaron diferencias en ninguno de los puntos finales secundarios entre ambos grupos. Conclusión: En pacientes octogenarios con AAA, la REVA presentó un buen perfil de seguridad perioperatorio y a largo plazo.

3.
Arch Cardiol Mex ; 93(4): 422-428, 2023 06 23.
Article in Spanish | MEDLINE | ID: mdl-37355984

ABSTRACT

Objective: The aim of the study was to compare the immediate and long-term outcomes of endovascular aneurysm repair (EVAR) between patients under and over the age of 80 with abdominal aortic aneurysm (AAA). Methods: From 2011 to 2017, we conducted a retrospective cohort study with AAA patients who received elective EVAR. Primary outcomes included hospital mortality, length of stay, acute kidney injury, and the need for re-interventions. Secondary outcomes included aneurysm-related mortality, acute myocardial infarction, stroke, acute limb ischemia, and prolonged mechanical ventilation. Results: A total of 77 (62.6%) patients under the age of 80 years old and 46 (37.4%) octogenarians were included in the study. The male gender and AAA diameter did not differ among groups (92.2% vs. 82.6%, p = 0.11 and 5.4 cm [4.9-6.2 cm] vs. 5.4 cm [5-6 cm], p = 0.53, respectively). The younger patients had a higher prevalence of tobacco use (72.7% vs. 41.7%, p = 0.01). There were no deaths during the index hospitalization. The incidence of reinterventions (5.3% vs. 15.2%, p = 0.11) and acute kidney injury (14.3% vs. 23.9%, p = 0.18) did not differ between groups, but the length of stay was longer for octogenarian patients (3 days [2-4] vs. 2 days [2-3, p = 0.04)]. Endoleaks were the most common cause for re-interventions (81.8%), with a prevalence of 34% across the entire cohort. There were no differences in any of the secondary outcomes between groups. Conclusion: In octogenarian patients with AAA, EVAR represents a safe procedure both during the index hospitalization and during long-term follow-up.


Objetivo: Comparar los resultados inmediatos y a largo plazo de la reparación endovascular del aneurisma de aorta abdominal (REVA) entre pacientes menores de 80 años y octogenarios. Método: Cohorte retrospectiva que incluyó pacientes con aneurisma de aorta abdominal (AAA) sometidos a REVA electiva desde 2011 hasta 2017. Se evaluaron como punto finales primarios la mortalidad hospitalaria, la duración de la estadía hospitalaria, la incidencia de insuficiencia renal aguda y el requerimiento de reintervenciones. Los puntos finales secundarios incluyeron la mortalidad asociada al aneurisma, infarto agudo de miocardio, accidente cerebrovascular, isquemia arterial aguda de las extremidades y ventilación mecánica prolongada. Resultados: Se incluyeron 77 (62.6%) pacientes menores de 80 años y 46 (37.4%) octogenarios. La prevalencia de sexo masculino y el diámetro del AAA no difirieron entre ambos grupos (92.2% vs. 82.6%, p = 0.11 y 5.4 cm [4.9-6.2 cm] vs. 5.4 cm [5-6 cm], p = 0.53, respectivamente). Los pacientes más jóvenes presentaron una mayor prevalencia de tabaquismo (72.7% vs. 41.7%, p = 0.01). No se registraron muertes durante la hospitalización índice. La incidencia de reintervenciones (5.3% vs. 15.2%, p = 0.11) e insuficiencia renal aguda (14.3% vs. 23.9%, p = 0.18) no difirieron entre ambos grupos, pero la estadía hospitalaria fue más prolongada en pacientes octogenarios (3 días [2-4 días] vs. 2 días [2-3 días], p = 0.04). La causa más frecuente de reintervenciones fue la presencia de endofugas (81.8%), con una prevalencia del 34% en toda la cohorte. No se observaron diferencias en ninguno de los puntos finales secundarios entre ambos grupos. Conclusión: En pacientes octogenarios con AAA, la REVA presentó un buen perfil de seguridad perioperatorio y a largo plazo.


Subject(s)
Acute Kidney Injury , Aortic Aneurysm, Abdominal , Blood Vessel Prosthesis Implantation , Endovascular Procedures , Aged, 80 and over , Humans , Male , Octogenarians , Aortic Aneurysm, Abdominal/surgery , Endovascular Procedures/adverse effects , Endovascular Procedures/methods , Retrospective Studies , Risk Factors , Treatment Outcome , Blood Vessel Prosthesis Implantation/adverse effects , Blood Vessel Prosthesis Implantation/methods , Acute Kidney Injury/etiology , Acute Kidney Injury/complications , Postoperative Complications
5.
Cardiovasc Intervent Radiol ; 45(4): 438-447, 2022 Apr.
Article in English | MEDLINE | ID: mdl-35059797

ABSTRACT

PURPOSE: Common femoral artery (CFA) is a critical segment of the lower-limb arterial tree. We sought to propose an extensive classification in order to appraise a diagnostic and therapeutic approach. METHODS: A retrospective cohort of CFA lesions with endovascular therapy was evaluated. We appraised the extension, the degree of stenosis and the calcium burden. A new group "IV" included lesions that started at the external iliac artery or common iliac artery extending into the CFA and affecting its bifurcation. The primary outcome was the need for a retrograde bailout access after failed anterograde access and the procedural time. RESULTS: From 2012 to 2020, a total of 58 lower limbs in patients with CFA lesions were included. New proposed group IV compromised 36% of lesions. Additionally, procedural time was significantly longer in group IV lesions compared with the rest (76.9 ± 32.23 min vs 47.67 ± 17.93 min, p < 0.01), as was the requirement of retrograde bailout access (23.8 vs 2.6%, p = 0.03). Occlusive lesions were associated with longer procedural times and bailout retrograde access compared to stenotic lesions (74.7 ± 33.6 min vs 48.29 ± 16 min, p < 0.001 and 26.1 vs 0%, p = 0.006, respectively), as well as heavy calcification compared to mild or moderate calcification (73.18 ± 28.15 vs 51.86 ± 25.1, p = 0.06 and 29.4 vs 2.4%, p = 0.009, respectively). Secondary clinical outcomes and target lesion revascularization did not differ among groups. CONCLUSIONS: Our classification includes a new group of extensive and frequent lesions, which did not fit in previous classifications.


Subject(s)
Endovascular Procedures , Femoral Artery , Femoral Artery/diagnostic imaging , Humans , Iliac Artery/diagnostic imaging , Retrospective Studies , Treatment Outcome
6.
Vasc Endovascular Surg ; 55(6): 668-672, 2021 Aug.
Article in English | MEDLINE | ID: mdl-33568001

ABSTRACT

PURPOSE: This technical note aims to show a challenging endovascular treatment approach of a giant and tortuous ruptured popliteal artery aneurism. MATERIALS AND METHODS: An 86-year-old male patient was admitted for acute lower right limb ischemia. Angio-MSCT showed highly calcified superficial femoral artery, with a 180° bend in distal portion, followed by a large popliteal aneurism (63 × 61 mm) with a large extent hematoma (142 × 112 × 104 mm). Endovascular approach was chosen due to high morbidity. RESULTS: Anterior puncture of right superficial femoral artery was performed under ultrasound guidance. Despite various intents, the 0.035 hydrophilic coated wire could not be crossed distally through the aneurism. Retrograde access was performed via tibio-peroneal trunk under fluoroscopic guidance with a micropuncture set. A stiff 0.035″ Glidewire® was successfully advanced into the proximal portion of the aneurism through a 5F vertebral catheter externalized with a snare from the femoral sheath obtaining a "through-and-through wire" technique. Tightening of both ends of the wire helped gain support and straightened curves. Two stent grafts were implanted with no residual leak at 1 month follow-up. CONCLUSION: Anterograde and retrograde approach was useful to perform a through-and-through wire technique in a challenging case of a tortuous ruptured popliteal artery aneurism.


Subject(s)
Aneurysm, Ruptured/therapy , Catheterization, Peripheral , Endovascular Procedures , Popliteal Artery , Aged, 80 and over , Aneurysm, Ruptured/diagnostic imaging , Catheterization, Peripheral/instrumentation , Endovascular Procedures/instrumentation , Humans , Male , Popliteal Artery/diagnostic imaging , Treatment Outcome , Vascular Access Devices
7.
Vasc Endovascular Surg ; 55(1): 69-72, 2021 Jan.
Article in English | MEDLINE | ID: mdl-32862786

ABSTRACT

Venous stent placement of symptomatic occlusion of the superior and inferior vena cava is considered the treatment of choice in malignant disease because this technique can restore patency and achieve a relief of symptoms. However, tumor thrombus extension into the right atrium harbors the potential risk of stent migration and perforation. One strategy to avoid this potential life-threatening complication could be the placement of a bridging stent from the superior vena cava-to-inferior vena cava. This case reports describes the superior vena cava-to-inferior vena cava bridging stent technique in 2 patients with malignant occlusion of the superior and inferior vena cava. Special considerations such as technical details of the devices and potential complications are discussed.


Subject(s)
Endovascular Procedures/instrumentation , Heart Atria , Neoplasms/complications , Stents , Superior Vena Cava Syndrome/therapy , Vena Cava, Inferior , Vena Cava, Superior , Venous Thrombosis/therapy , Aged , Female , Heart Atria/diagnostic imaging , Heart Atria/pathology , Humans , Male , Middle Aged , Neoplasm Invasiveness , Neoplasms/diagnostic imaging , Neoplasms/pathology , Superior Vena Cava Syndrome/diagnostic imaging , Superior Vena Cava Syndrome/etiology , Superior Vena Cava Syndrome/pathology , Treatment Outcome , Vena Cava, Inferior/diagnostic imaging , Vena Cava, Inferior/pathology , Vena Cava, Superior/diagnostic imaging , Vena Cava, Superior/pathology , Venous Thrombosis/diagnostic imaging , Venous Thrombosis/etiology , Venous Thrombosis/pathology
9.
Ann Vasc Surg ; 63: 454.e11-454.e15, 2020 Feb.
Article in English | MEDLINE | ID: mdl-31563655

ABSTRACT

Endovenous ablation techniques (radiofrequency or laser) have become the less invasive choice of treatment for superficial venous insufficiency due to saphenous vein incompetence showing high effectiveness and few complications. We present a case of symptomatic arteriovenous fistula between the external iliac artery and vein after endovenous laser ablation repaired with covered stent. We also review the literature and discuss the possible causes and management of this unusual and potentially severe complication, and the feasibility of endovascular treatment.


Subject(s)
Angioplasty, Balloon/instrumentation , Arteriovenous Fistula/therapy , Endovascular Procedures/adverse effects , Iliac Artery , Iliac Vein , Laser Therapy/adverse effects , Saphenous Vein/surgery , Stents , Varicose Veins/surgery , Arteriovenous Fistula/diagnostic imaging , Arteriovenous Fistula/etiology , Humans , Iliac Artery/diagnostic imaging , Iliac Vein/diagnostic imaging , Male , Middle Aged , Saphenous Vein/diagnostic imaging , Treatment Outcome , Varicose Veins/diagnostic imaging
10.
Rev. argent. radiol ; 83(4): 160-169, oct. 2019. graf
Article in Spanish | LILACS | ID: biblio-1057418

ABSTRACT

Resumen Los síndromes de compresión vascular constituyen un grupo de patologías poco frecuentes con prevalencia incierta, no solo por el desconocimiento que se tiene de estos, sino también por su presentación clínica inespecífica. Eso conlleva a que sean infradiagnosticados o detectados en etapas tardías, con secuelas a largo plazo. Su fisiopatología y clínica dependen del tipo de vaso comprometido, el sitio anatómico afectado y la causa subyacente que lo esté produciendo. La anamnesis, el examen físico dirigido y el uso de métodos complementarios como la ultrasonografía Doppler y la angiografía por tomografía computarizada (ATC) o angiografía por resonancia magnética (ARM), son herramientas vitales para su correcto diagnóstico, planificación terapéutica y seguimiento.


Abstract Vascular compression syndromes constitute a group of rare pathologies with uncertain prevalence not only because of their unawareness, but also for its nonspecific clinical presentation. This leads to their underdiagnosis, or detection in late stages with long-term sequelae. Its pathophysiology and presentation depends on the type of vessel involved, the affected anatomical site and the underlying cause producing it. Clinical history, physical examination and use of complementary methods such as Doppler ultrasonography, Computed Tomography Angiography (CTA) or Magnetic Resonance Angiography (MRA), are essential tools for its proper diagnosis, therapeutic planning and follow-up.


Subject(s)
Cervical Rib Syndrome/diagnostic imaging , Magnetic Resonance Angiography , Computed Tomography Angiography
11.
Vasc Endovascular Surg ; 52(8): 602-606, 2018 Nov.
Article in English | MEDLINE | ID: mdl-30079819

ABSTRACT

INTRODUCTION:: Proximal (iliocaval and iliofemoral) deep vein thrombosis (DVT) and pulmonary thromboembolism are the second cause of death in patients with cancer. MATERIAL AND METHODS:: A retrospective analysis was performed in 35 patients with cancer treated with endovascular therapy for proximal DVT. The primary objective was to evaluate the technical success of the procedure and the 30-day and long-term symptom improvement. RESULTS:: Thirty-five patients with a mean age of 57.7 years were treated. In 27 patients, DVT was due to tumor compression and/or invasion of the iliocaval venous axis, and in the remaining 8, it was secondary to their hypercoagulability state. The revascularization techniques used were manual catheter-directed aspiration of the thrombus plus angioplasty and stenting. Technical success was achieved in 33 patients. No complications occurred. Twenty-seven patients were followed up at 30 days posttreatment: 21 were free of postthrombotic syndrome, 4 (14.8%) had mild symptoms, and 2 (7.4%) had moderate symptoms. The mean long-term follow-up was 27.3 months, with a primary patency of 68.8% and assisted and secondary patency rates of 100%. CONCLUSION:: Endovascular revascularization in patients with cancer with extensive and symptomatic proximal DVT is safe and efficient, with a low rate of complications. We consider that this therapy should be offered to patients with cancer with an average or long life expectancy.


Subject(s)
Angioplasty , Femoral Vein , Iliac Vein , Neoplasms/complications , Thrombectomy , Vena Cava, Inferior , Venous Thrombosis/therapy , Adult , Aged , Aged, 80 and over , Angioplasty/adverse effects , Angioplasty/instrumentation , Female , Femoral Vein/diagnostic imaging , Femoral Vein/physiopathology , Humans , Iliac Vein/diagnostic imaging , Iliac Vein/physiopathology , Male , Middle Aged , Neoplasms/diagnosis , Retrospective Studies , Risk Factors , Stents , Thrombectomy/adverse effects , Time Factors , Treatment Outcome , Vascular Patency , Vena Cava, Inferior/diagnostic imaging , Vena Cava, Inferior/physiopathology , Venous Thrombosis/diagnostic imaging , Venous Thrombosis/etiology , Venous Thrombosis/physiopathology , Young Adult
12.
Rev. argent. cardiol ; 86(4): 43-52, ago. 2018.
Article in Spanish | LILACS-Express | LILACS | ID: biblio-1003210

ABSTRACT

RESUMEN Introducción: La restenosis continúa siendo el gran desafío de la terapia endovascular, por esa razón, se han desarrollado balones liberadores de fármaco (BLF) con la finalidad de reducir la restenosis. El objetivo de este trabajo es analizar los resultados de esta terapia. Material y métodos: Se realizó un análisis retrospectivo de 40 extremidades de pacientes claudicantes con lesiones femoro-poplíteas tratados con BLF. Resultados: Se obtuvo el éxito técnico en las 40 (100%) extremidades tratadas con una media de seguimiento de 11,1 mes sin evidencia de complicaciones graves relacionadas con el tratamiento con un 92,5% de las extremidades asintomáticas durante el seguimiento. En tres extremidades se realizó una nueva angioplastia por recidiva sintomática. Conclusiones: El BLF ha probado ser una herramienta útil, segura y eficaz para el tratamiento de lesiones de novo y restenosis intrastent; no obstante, en las lesiones TASC C-D se requiere la utilización de un mayor número de stents.


ABSTRACT Background: Restenosis continues to be the great challenge of endovascular therapy, and drug-eluting balloons (DEB) have been developed to reduce it. The aim of this study was to analyze the results of this therapy. Methods: A retrospective analysis of 40 limbs with femoropopliteal lesions treated with DEB was conducted in patients with intermittent claudication. Results: Technical success was obtained in the 40 (100%) limbs treated, without evidence of serious complications related with treatment, and with 92.5% of asymptomatic limbs during the follow-up period of 11.1 months. In three limbs, a new angioplasty was performed due to symptomatic recurrence. Conclusions: The drug-eluting balloon has proven to be a useful, safe and effective tool for the treatment of de novo and in-stent restenosis lesions; however, TASC C-D lesions require the use of greater number of stents.

13.
World J Cardiol ; 9(7): 629-633, 2017 Jul 26.
Article in English | MEDLINE | ID: mdl-28824793

ABSTRACT

Open surgery is the elective treatment for mycotic aneurysms of the aorta. This surgery consists of resection of the aneurysm, debridement and revascularization with an in situ or extra-anatomic bypass. Even when surgery has been successful, the morbi-mortality is raised and the endovascular treatment has become an alternative for specific patients. When mycotic aneurysms involved the visceral arteries, more complex techniques are necessary such as fenestrated endovascular aortic repair or chimmeny endovascular aortic repair and the most frequent complications of this are endoleaks and oclussion the visceral arteries. We present a case of a pacient with a paravisceral abdominal mycotic aneurysms that was result with 2 chimney technique (in the right renal and superior mesenteric arteries) and a single Nellix EVAS (Endologix, Irvine, Calif) of 12 cm long without evidence of endoleaks in the follow-up.

14.
Int J Nephrol Renovasc Dis ; 10: 215-219, 2017.
Article in English | MEDLINE | ID: mdl-28794652

ABSTRACT

INTRODUCTION AND PURPOSE: The increasing number of patients undergoing hemodialysis and the limited number of access sites have resulted in an increasing number of techniques to maintain vascular access for hemodialysis. Thrombosed arteriovenous (AV) fistulas with large venous aneurysms have poor treatment results, with both endovascular and surgical techniques, leading to a high rate of definitive AV access loss. The purpose of this study was to review the feasibility and initial results of this novel endovascular treatment of thrombosed AV fistulas with large venous aneurysms. MATERIALS AND METHODS: A novel endovascular treatment technique of inserting nitinol auto-expandable uncovered stents stretching through the whole puncture site area, thus creating a tunnel inside the thrombus, was retrospectively analyzed and described. RESULTS: A total of 17 stents were placed in 10 hemodialysis fistulas, with a mean venous coverage length of 17.8 cm. In all the cases, 100% technical success was achieved, with complete restoration of blood flow in all patients. There were no procedure-related complications. The mean follow-up was 167 days (range 60-420 days), with a primary and assisted patency of 80% and 100%, respectively. No multiple trans-stent struts-related complications were observed. Three stent fractures were diagnosed with plain films at the site of puncture without consequence in the venous access permeability. CONCLUSION: The "stent tunnel technique" is a feasible, safe and effective alternative to salvage native hemodialysis access, thus extending the function of the venous access with no signs of stent-related complications and a respectable midterm patency.

17.
Rev. argent. cardiol ; 84(3): 1-10, jun. 2016. ilus
Article in Spanish | LILACS | ID: biblio-957729

ABSTRACT

Introducción: La cirugía representa el tratamiento de revascularización tradicional para las lesiones aortoilíacas TASC tipos C y D. No obstante, la morbimortalidad de la cirugía abierta no es despreciable, motivo por el cual en la última década el tratamiento endovascular emerge como una alternativa menos invasiva. Objetivo: Analizar los resultados en nuestra institución del tratamiento endovascular de estas lesiones ilíacas con técnica de stent primario. Material y métodos: Se realizó un análisis retrospectivo descriptivo de 32 lesiones ilíacas TASC tipos C y D tratadas de forma endovascular desde enero de 2012 a octubre de 2014. Se evaluaron el éxito técnico, la mortalidad perioperatoria y la permeabilidad. Resultados: Se consiguió el éxito técnico en las 32 (100%) lesiones tratadas. La media de seguimiento fue de 14 meses, con una permeabilidad primaria del 96,8%. La mortalidad acumulativa durante el seguimiento fue de 2 (6,25%) pacientes. Conclusiones: En nuestra experiencia, en las lesiones TASC tipos C y D de la región aortoilíaca, el tratamiento endovascular es factible y seguro y presenta una tasa elevada de recanalización. Podría considerarse como una alternativa válida a la cirugía para este tipo de lesiones si estos hallazgos se confirman en estudios de mayores dimensiones, aleatorizados y comparativos de ambas terapéuticas.

18.
Intern Med ; 54(21): 2745-8, 2015.
Article in English | MEDLINE | ID: mdl-26521904

ABSTRACT

Hereditary hemorrhagic telangiectasia (HHT) usually presents in association with pulmonary arteriovenous malformations (PAVMs). In addition, the incidence of venous thromboembolism tends to be increased in these patients. A 74-year-old female with HHT presented with cyanosis and hypoxemia. Contrast-enhanced multislice computed tomography (MSCT) revealed two left PAVMs and one in the right upper lobe. Both left PAVMs were treated with embolotherapy. Follow-up MSCT revealed an incidental pulmonary embolism in the right pulmonary branches. Deep venous thrombosis was confirmed and anticoagulation was initiated. Follow-up MSCT revealed the resolution of thromboembolism. Finally, embolotherapy was performed. This case illustrates the chronic adaptation to hypoxemia and adds further evidence to the relative safety of anticoagulation treatment in these patients.


Subject(s)
Anticoagulants/administration & dosage , Arteriovenous Malformations/etiology , Embolization, Therapeutic , Multidetector Computed Tomography , Telangiectasia, Hereditary Hemorrhagic/complications , Venous Thromboembolism/etiology , Aged , Arteriovenous Malformations/diagnostic imaging , Arteriovenous Malformations/therapy , Cyanosis/etiology , Embolization, Therapeutic/methods , Female , Humans , Hypoxia/etiology , Incidence , Telangiectasia, Hereditary Hemorrhagic/diagnostic imaging , Telangiectasia, Hereditary Hemorrhagic/therapy , Treatment Outcome , Venous Thromboembolism/diagnostic imaging , Venous Thromboembolism/therapy
19.
Ann Vasc Surg ; 29(8): 1661.e1-4, 2015 Nov.
Article in English | MEDLINE | ID: mdl-26318556

ABSTRACT

We report a case of an 82-year-old female patient with native coarctation of the aorta and poststenotic aneurysm of the descending thoracic aorta. On consultation, she was receiving 4 antihypertensive drugs, and physical examination revealed nonpalpable lower-limb pulses with intermittent claudication at 50 min. Because of her age, high surgical risk and combination of lesions, endovascular treatment was suggested. Placement of a Valiant thoracic aorta endoprosthesis followed by coarctation angioplasty was performed. At 48 hr, the patient was discharged on 1 antihypertensive drug, palpable pulses on both limbs and a normal ankle-brachial index. At 1 month follow-up, the patient remained as discharged and multislice computed tomography angiography depicted complete coarctation expansion without residual stenosis, exclusion of the aortic aneurysm, and no signs of endoleaks.


Subject(s)
Angioplasty , Aortic Aneurysm/surgery , Aortic Coarctation/surgery , Blood Vessel Prosthesis Implantation , Blood Vessel Prosthesis , Aged, 80 and over , Aortic Aneurysm/complications , Aortic Aneurysm/diagnosis , Aortic Coarctation/complications , Aortic Coarctation/diagnosis , Female , Humans
20.
J Vasc Interv Radiol ; 25(9): 1333-7, 2014 Sep.
Article in English | MEDLINE | ID: mdl-25150900

ABSTRACT

The recent generation of AMPLATZER Vascular Plug (AVP; ie, the AVP IV) was used for the occlusion of eight pulmonary arteriovenous malformations (PAVMs) in five patients. A treatment was considered successful when there was a reduction or disappearance of the aneurysmal sac. At a mean follow-up of 20.1 months, no recanalization of PAVMs was observed on multidetector computed tomographic angiography. This shows the AVP IV to be safe and effective as an embolic device to occlude PAVMs.


Subject(s)
Arteriovenous Malformations/therapy , Embolization, Therapeutic/instrumentation , Pulmonary Artery/abnormalities , Pulmonary Veins/abnormalities , Adult , Aged , Angiography, Digital Subtraction , Arteriovenous Malformations/diagnosis , Embolization, Therapeutic/adverse effects , Equipment Design , Female , Humans , Male , Middle Aged , Multidetector Computed Tomography , Phlebography/methods , Pulmonary Artery/diagnostic imaging , Pulmonary Veins/diagnostic imaging , Time Factors , Treatment Outcome
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